GNUnet  0.18.1
Scheduler library

Event loop (scheduler) More...

Collaboration diagram for Scheduler library:

Data Structures

struct  GNUNET_SCHEDULER_FdInfo
 Information about an event relating to a file descriptor/socket. More...
 
struct  GNUNET_SCHEDULER_TaskContext
 Context information passed to each scheduler task. More...
 
struct  GNUNET_SCHEDULER_Driver
 API an external event loop has to implement for GNUNET_SCHEDULER_driver_init. More...
 

Typedefs

typedef void(* GNUNET_SCHEDULER_TaskCallback) (void *cls)
 Signature of the main function of a task. More...
 
typedef int(* GNUNET_SCHEDULER_select) (void *cls, struct GNUNET_NETWORK_FDSet *rfds, struct GNUNET_NETWORK_FDSet *wfds, struct GNUNET_NETWORK_FDSet *efds, struct GNUNET_TIME_Relative timeout)
 Signature of the select function used by the scheduler. More...
 

Enumerations

enum  GNUNET_SCHEDULER_Reason {
  GNUNET_SCHEDULER_REASON_NONE = 0 , GNUNET_SCHEDULER_REASON_STARTUP = 1 , GNUNET_SCHEDULER_REASON_SHUTDOWN = 2 , GNUNET_SCHEDULER_REASON_TIMEOUT = 4 ,
  GNUNET_SCHEDULER_REASON_READ_READY = 8 , GNUNET_SCHEDULER_REASON_WRITE_READY = 16 , GNUNET_SCHEDULER_REASON_PREREQ_DONE = 32
}
 Reasons why the schedule may have triggered the task now. More...
 
enum  GNUNET_SCHEDULER_EventType {
  GNUNET_SCHEDULER_ET_NONE = 0 , GNUNET_SCHEDULER_ET_IN = 1 , GNUNET_SCHEDULER_ET_OUT = 2 , GNUNET_SCHEDULER_ET_HUP = 4 ,
  GNUNET_SCHEDULER_ET_ERR = 8 , GNUNET_SCHEDULER_ET_PRI = 16 , GNUNET_SCHEDULER_ET_NVAL = 32
}
 Possible events on FDs, used as a bitmask. More...
 

Functions

void GNUNET_SCHEDULER_task_ready (struct GNUNET_SCHEDULER_Task *task, struct GNUNET_SCHEDULER_FdInfo *fdi)
 Function used by event-loop implementations to signal the scheduler that a particular task is ready due to an event specified in the et field of fdi. More...
 
int GNUNET_SCHEDULER_do_work (struct GNUNET_SCHEDULER_Handle *sh)
 Function called by external event loop implementations to tell the scheduler to run some of the tasks that are ready. More...
 
struct GNUNET_SCHEDULER_HandleGNUNET_SCHEDULER_driver_init (const struct GNUNET_SCHEDULER_Driver *driver)
 Function called by external event loop implementations to initialize the scheduler. More...
 
void GNUNET_SCHEDULER_driver_done (struct GNUNET_SCHEDULER_Handle *sh)
 Counter-part of GNUNET_SCHEDULER_driver_init. More...
 
struct GNUNET_SCHEDULER_DriverGNUNET_SCHEDULER_driver_select (void)
 Obtain the driver for using select() as the event loop. More...
 
void GNUNET_SCHEDULER_run (GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Initialize and run scheduler. More...
 
void GNUNET_SCHEDULER_run_with_optional_signals (int install_signals, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Initialize and run scheduler. More...
 
void GNUNET_SCHEDULER_shutdown (void)
 Request the shutdown of a scheduler. More...
 
unsigned int GNUNET_SCHEDULER_get_load (enum GNUNET_SCHEDULER_Priority p)
 Get information about the current load of this scheduler. More...
 
const struct GNUNET_SCHEDULER_TaskContextGNUNET_SCHEDULER_get_task_context (void)
 Obtain the reasoning why the current task was started. More...
 
void * GNUNET_SCHEDULER_cancel (struct GNUNET_SCHEDULER_Task *task)
 Cancel the task with the specified identifier. More...
 
void GNUNET_SCHEDULER_add_with_reason_and_priority (GNUNET_SCHEDULER_TaskCallback task, void *task_cls, enum GNUNET_SCHEDULER_Reason reason, enum GNUNET_SCHEDULER_Priority priority)
 Continue the current execution with the given function. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_with_priority (enum GNUNET_SCHEDULER_Priority prio, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run with a specified priority. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_now (GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run as soon as possible. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_shutdown (GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run on shutdown, that is when a CTRL-C signal is received, or when GNUNET_SCHEDULER_shutdown() is being invoked. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_now_with_lifeness (int lifeness, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run as soon as possible with the (transitive) ignore-shutdown flag either explicitly set or explicitly enabled. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_delayed (struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run with a specified delay. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_at (struct GNUNET_TIME_Absolute at, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run at the specified time. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_delayed_with_priority (struct GNUNET_TIME_Relative delay, enum GNUNET_SCHEDULER_Priority priority, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run with a specified delay. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_at_with_priority (struct GNUNET_TIME_Absolute at, enum GNUNET_SCHEDULER_Priority priority, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run at the specified time. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_read_net (struct GNUNET_TIME_Relative delay, struct GNUNET_NETWORK_Handle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run with a specified delay or when the specified file descriptor is ready for reading. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_read_net_with_priority (struct GNUNET_TIME_Relative delay, enum GNUNET_SCHEDULER_Priority priority, struct GNUNET_NETWORK_Handle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run with a specified priority and to be run after the specified delay or when the specified file descriptor is ready for reading. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_write_net (struct GNUNET_TIME_Relative delay, struct GNUNET_NETWORK_Handle *wfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run with a specified delay or when the specified file descriptor is ready for writing. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_net_with_priority (struct GNUNET_TIME_Relative delay, enum GNUNET_SCHEDULER_Priority priority, struct GNUNET_NETWORK_Handle *fd, int on_read, int on_write, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run with a specified delay or when the specified file descriptor is ready. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_read_file (struct GNUNET_TIME_Relative delay, const struct GNUNET_DISK_FileHandle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run with a specified delay or when the specified file descriptor is ready for reading. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_write_file (struct GNUNET_TIME_Relative delay, const struct GNUNET_DISK_FileHandle *wfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run with a specified delay or when the specified file descriptor is ready for writing. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_file_with_priority (struct GNUNET_TIME_Relative delay, enum GNUNET_SCHEDULER_Priority priority, const struct GNUNET_DISK_FileHandle *fd, int on_read, int on_write, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run with a specified delay or when the specified file descriptor is ready. More...
 
struct GNUNET_SCHEDULER_TaskGNUNET_SCHEDULER_add_select (enum GNUNET_SCHEDULER_Priority prio, struct GNUNET_TIME_Relative delay, const struct GNUNET_NETWORK_FDSet *rs, const struct GNUNET_NETWORK_FDSet *ws, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
 Schedule a new task to be run with a specified delay or when any of the specified file descriptor sets is ready. More...
 
void GNUNET_SCHEDULER_set_select (GNUNET_SCHEDULER_select new_select, void *new_select_cls)
 Sets the select function to use in the scheduler (scheduler_select). More...
 
void GNUNET_SCHEDULER_begin_async_scope (struct GNUNET_AsyncScopeId *aid)
 Change the async scope for the currently executing task and (transitively) for all tasks scheduled by the current task after calling this function. More...
 

Detailed Description

Event loop (scheduler)

Schedule computations using continuation passing style.

Typedef Documentation

◆ GNUNET_SCHEDULER_TaskCallback

typedef void(* GNUNET_SCHEDULER_TaskCallback) (void *cls)

Signature of the main function of a task.

Parameters
clsclosure

Definition at line 322 of file gnunet_scheduler_lib.h.

◆ GNUNET_SCHEDULER_select

typedef int(* GNUNET_SCHEDULER_select) (void *cls, struct GNUNET_NETWORK_FDSet *rfds, struct GNUNET_NETWORK_FDSet *wfds, struct GNUNET_NETWORK_FDSet *efds, struct GNUNET_TIME_Relative timeout)

Signature of the select function used by the scheduler.

GNUNET_NETWORK_socket_select matches it.

Parameters
clsclosure
rfdsset of sockets to be checked for readability
wfdsset of sockets to be checked for writability
efdsset of sockets to be checked for exceptions
timeoutrelative value when to return
Returns
number of selected sockets, GNUNET_SYSERR on error

Definition at line 399 of file gnunet_scheduler_lib.h.

Enumeration Type Documentation

◆ GNUNET_SCHEDULER_Reason

Reasons why the schedule may have triggered the task now.

Enumerator
GNUNET_SCHEDULER_REASON_NONE 

This task is not ready.

GNUNET_SCHEDULER_REASON_STARTUP 

This is the very first task run during startup.

GNUNET_SCHEDULER_REASON_SHUTDOWN 

We are shutting down and are running all shutdown-related tasks.

GNUNET_SCHEDULER_REASON_TIMEOUT 

The specified timeout has expired.

(also set if the delay given was 0).

GNUNET_SCHEDULER_REASON_READ_READY 

The reading socket is ready.

GNUNET_SCHEDULER_REASON_WRITE_READY 

The writing socket is ready.

GNUNET_SCHEDULER_REASON_PREREQ_DONE 

The prerequisite task is done.

Definition at line 59 of file gnunet_scheduler_lib.h.

60 {
65 
70 
75 
81 
86 
91 
96 };
@ GNUNET_SCHEDULER_REASON_TIMEOUT
The specified timeout has expired.
@ GNUNET_SCHEDULER_REASON_READ_READY
The reading socket is ready.
@ GNUNET_SCHEDULER_REASON_SHUTDOWN
We are shutting down and are running all shutdown-related tasks.
@ GNUNET_SCHEDULER_REASON_NONE
This task is not ready.
@ GNUNET_SCHEDULER_REASON_STARTUP
This is the very first task run during startup.
@ GNUNET_SCHEDULER_REASON_WRITE_READY
The writing socket is ready.
@ GNUNET_SCHEDULER_REASON_PREREQ_DONE
The prerequisite task is done.

◆ GNUNET_SCHEDULER_EventType

Possible events on FDs, used as a bitmask.

Modelled after GPollFD.

Enumerator
GNUNET_SCHEDULER_ET_NONE 

No event (useful for timeout).

GNUNET_SCHEDULER_ET_IN 

Data available for reading.

GNUNET_SCHEDULER_ET_OUT 

Buffer available for writing.

GNUNET_SCHEDULER_ET_HUP 
GNUNET_SCHEDULER_ET_ERR 
GNUNET_SCHEDULER_ET_PRI 
GNUNET_SCHEDULER_ET_NVAL 

Definition at line 107 of file gnunet_scheduler_lib.h.

108 {
113 
118 
123 
128 
133 
138 
143 };
@ GNUNET_SCHEDULER_ET_OUT
Buffer available for writing.
@ GNUNET_SCHEDULER_ET_HUP
@ GNUNET_SCHEDULER_ET_NONE
No event (useful for timeout).
@ GNUNET_SCHEDULER_ET_NVAL
@ GNUNET_SCHEDULER_ET_IN
Data available for reading.
@ GNUNET_SCHEDULER_ET_PRI
@ GNUNET_SCHEDULER_ET_ERR

Function Documentation

◆ GNUNET_SCHEDULER_task_ready()

void GNUNET_SCHEDULER_task_ready ( struct GNUNET_SCHEDULER_Task task,
struct GNUNET_SCHEDULER_FdInfo fdi 
)

Function used by event-loop implementations to signal the scheduler that a particular task is ready due to an event specified in the et field of fdi.

This function will then queue the task to notify the application that the task is ready (with the respective priority).

Parameters
taskthe task that is ready
fdiinformation about the related FD

Definition at line 1915 of file scheduler.c.

1917 {
1918  enum GNUNET_SCHEDULER_Reason reason;
1919 
1920  reason = task->reason;
1921  if ((0 == (reason & GNUNET_SCHEDULER_REASON_READ_READY)) &&
1922  (0 != (GNUNET_SCHEDULER_ET_IN & fdi->et)))
1924  if ((0 == (reason & GNUNET_SCHEDULER_REASON_WRITE_READY)) &&
1925  (0 != (GNUNET_SCHEDULER_ET_OUT & fdi->et)))
1928  task->reason = reason;
1929  if (GNUNET_NO == task->in_ready_list)
1930  {
1932  pending_tail,
1933  task);
1934  queue_ready_task (task);
1935  }
1936 }
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
@ GNUNET_NO
Definition: gnunet_common.h:98
GNUNET_SCHEDULER_Reason
Reasons why the schedule may have triggered the task now.
static void queue_ready_task(struct GNUNET_SCHEDULER_Task *task)
Put a task that is ready for execution into the ready queue.
Definition: scheduler.c:512
static struct GNUNET_SCHEDULER_Task * pending_head
Head of list of tasks waiting for an event.
Definition: scheduler.c:316
static struct GNUNET_SCHEDULER_Task * pending_tail
Tail of list of tasks waiting for an event.
Definition: scheduler.c:321
enum GNUNET_SCHEDULER_EventType et
Type of the event that was generated related to sock.
int in_ready_list
Is this task in the ready list?
Definition: scheduler.c:229
enum GNUNET_SCHEDULER_Reason reason
Why is the task ready? Set after task is added to ready queue.
Definition: scheduler.c:198

References GNUNET_SCHEDULER_FdInfo::et, GNUNET_CONTAINER_DLL_remove, GNUNET_NO, GNUNET_SCHEDULER_ET_IN, GNUNET_SCHEDULER_ET_OUT, GNUNET_SCHEDULER_REASON_PREREQ_DONE, GNUNET_SCHEDULER_REASON_READ_READY, GNUNET_SCHEDULER_REASON_WRITE_READY, GNUNET_SCHEDULER_Task::in_ready_list, pending_head, pending_tail, queue_ready_task(), and GNUNET_SCHEDULER_Task::reason.

Referenced by select_loop().

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◆ GNUNET_SCHEDULER_do_work()

int GNUNET_SCHEDULER_do_work ( struct GNUNET_SCHEDULER_Handle sh)

Function called by external event loop implementations to tell the scheduler to run some of the tasks that are ready.

Must be called only after GNUNET_SCHEDULER_driver_init has been called and before GNUNET_SCHEDULER_driver_done is called. This function may return even though there are tasks left to run just to give other tasks a chance as well. If we return GNUNET_YES, the event loop implementation should call this function again as soon as possible, while if we return GNUNET_NO it must block until either the operating system has more work (the scheduler has no more work to do right now) or the timeout set by the scheduler (using the set_wakeup callback) is reached.

Parameters
shscheduler handle that was returned by GNUNET_SCHEDULER_driver_init
Returns
GNUNET_YES if there are more tasks that are ready, and thus we would like to run more (yield to avoid blocking other activities for too long) GNUNET_NO if we are done running tasks (yield to block)

The event loop called this function before the current timeout was reached (and no FD tasks are ready). This is acceptable if

  • the system time was changed while the driver was waiting for the timeout
  • an external event loop called GNUnet API functions outside of the callbacks called in GNUNET_SCHEDULER_do_work and thus wasn't notified about the new timeout

It might also mean we are busy-waiting because of a programming error in the external event loop.

the current timeout was reached but no ready tasks were found, internal scheduler error!

Definition at line 1960 of file scheduler.c.

1961 {
1962  struct GNUNET_SCHEDULER_Task *pos;
1963  struct GNUNET_TIME_Absolute now;
1964 
1965  /* check for tasks that reached the timeout! */
1966  now = GNUNET_TIME_absolute_get ();
1967  pos = pending_timeout_head;
1968  while (NULL != pos)
1969  {
1970  struct GNUNET_SCHEDULER_Task *next = pos->next;
1971  if (now.abs_value_us >= pos->timeout.abs_value_us)
1973  if (0 == pos->reason)
1974  break;
1977  pos);
1978  if (pending_timeout_last == pos)
1979  pending_timeout_last = NULL;
1980  queue_ready_task (pos);
1981  pos = next;
1982  }
1983  pos = pending_head;
1984  while (NULL != pos)
1985  {
1986  struct GNUNET_SCHEDULER_Task *next = pos->next;
1987  if (now.abs_value_us >= pos->timeout.abs_value_us)
1988  {
1991  pending_tail,
1992  pos);
1993  queue_ready_task (pos);
1994  }
1995  pos = next;
1996  }
1997 
1998  if (0 == ready_count)
1999  {
2001 
2002  if (timeout.abs_value_us > now.abs_value_us)
2003  {
2018  "GNUNET_SCHEDULER_do_work did not find any ready "
2019  "tasks and timeout has not been reached yet.\n");
2020  }
2021  else
2022  {
2027  GNUNET_assert (0);
2028  }
2029  }
2030  else
2031  {
2032  struct GNUNET_SCHEDULER_Task *last;
2033 
2034  /* find out which task priority level we are going to
2035  process this time */
2038  /* yes, p>0 is correct, 0 is "KEEP" which should
2039  * always be an empty queue (see assertion)! */
2041  work_priority > 0;
2042  work_priority--)
2043  {
2044  pos = ready_head[work_priority];
2045  if (NULL != pos)
2046  break;
2047  }
2048  GNUNET_assert (NULL != pos); /* ready_count wrong? */
2049 
2050  /* process all *existing* tasks at this priority
2051  level, then yield */
2052  last = ready_tail[work_priority];
2053  while (NULL != (pos = ready_head[work_priority]))
2054  {
2057  pos);
2058  ready_count--;
2059  current_priority = pos->priority;
2060  current_lifeness = pos->lifeness;
2061  active_task = pos;
2062 #if PROFILE_DELAYS
2063  if (GNUNET_TIME_absolute_get_duration (pos->start_time).rel_value_us >
2064  DELAY_THRESHOLD.rel_value_us)
2065  {
2067  "Task %p took %s to be scheduled\n",
2068  pos,
2070  GNUNET_TIME_absolute_get_duration (pos->start_time),
2071  GNUNET_YES));
2072  }
2073 #endif
2074  tc.reason = pos->reason;
2077  // FIXME: do we have to remove FdInfos from fds if they are not ready?
2078  tc.fds_len = pos->fds_len;
2079  tc.fds = pos->fds;
2080  for (unsigned int i = 0; i != pos->fds_len; ++i)
2081  {
2082  struct GNUNET_SCHEDULER_FdInfo *fdi = &pos->fds[i];
2083  if (0 != (GNUNET_SCHEDULER_ET_IN & fdi->et))
2084  {
2086  fdi->sock);
2087  }
2088  if (0 != (GNUNET_SCHEDULER_ET_OUT & fdi->et))
2089  {
2091  fdi->sock);
2092  }
2093  }
2094  tc.read_ready = sh->rs;
2095  tc.write_ready = sh->ws;
2097  "Running task %p\n",
2098  pos);
2099  GNUNET_assert (NULL != pos->callback);
2100  {
2101  struct GNUNET_AsyncScopeSave old_scope;
2102  if (pos->scope.have_scope)
2103  GNUNET_async_scope_enter (&pos->scope.scope_id, &old_scope);
2104  else
2105  GNUNET_async_scope_get (&old_scope);
2106  pos->callback (pos->callback_cls);
2107  GNUNET_async_scope_restore (&old_scope);
2108  }
2109  if (NULL != pos->fds)
2110  {
2111  int del_result = scheduler_driver->del (scheduler_driver->cls,
2112  pos);
2113  if (GNUNET_OK != del_result)
2114  {
2116  "driver could not delete task %p\n", pos);
2117  GNUNET_assert (0);
2118  }
2119  }
2120  active_task = NULL;
2121  dump_backtrace (pos);
2122  destroy_task (pos);
2123  /* pointer 'pos' was free'd, but we can still safely check for
2124  pointer equality still. */
2125  if (pos == last)
2126  break; /* All tasks that _were_ ready when we started were
2127  executed. New tasks may have been added in the
2128  meantime, but we should check with the OS to
2129  be sure no higher-priority actions are pending! */
2130  }
2131  }
2133  if (0 == ready_count)
2134  {
2136  get_timeout ());
2137  return GNUNET_NO;
2138  }
2141  return GNUNET_YES;
2142 }
static struct GNUNET_TIME_Relative timeout
Desired timeout for the lookup (default is no timeout).
Definition: gnunet-abd.c:61
static struct SolverHandle * sh
void GNUNET_async_scope_enter(const struct GNUNET_AsyncScopeId *aid, struct GNUNET_AsyncScopeSave *old_scope)
Set the async scope for the current thread.
void GNUNET_async_scope_get(struct GNUNET_AsyncScopeSave *scope_ret)
Get the current async scope.
void GNUNET_async_scope_restore(struct GNUNET_AsyncScopeSave *old_scope)
Clear the current thread's async scope.
@ GNUNET_SCHEDULER_PRIORITY_COUNT
Number of priorities (must be the last priority).
@ GNUNET_SCHEDULER_PRIORITY_KEEP
Run with the same priority as the current job.
@ GNUNET_OK
Definition: gnunet_common.h:99
@ GNUNET_YES
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
@ GNUNET_ERROR_TYPE_ERROR
@ GNUNET_ERROR_TYPE_DEBUG
void GNUNET_NETWORK_fdset_zero(struct GNUNET_NETWORK_FDSet *fds)
Reset FD set (clears all file descriptors).
Definition: network.c:917
void GNUNET_NETWORK_fdset_set_native(struct GNUNET_NETWORK_FDSet *to, int nfd)
Set a native fd in a set.
Definition: network.c:1057
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_duration(struct GNUNET_TIME_Absolute whence)
Get the duration of an operation as the difference of the current time and the given start time "henc...
Definition: time.c:435
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:110
const char * GNUNET_STRINGS_relative_time_to_string(struct GNUNET_TIME_Relative delta, int do_round)
Give relative time in human-readable fancy format.
Definition: strings.c:570
static void dump_backtrace(struct GNUNET_SCHEDULER_Task *t)
Output stack trace of task t.
Definition: scheduler.c:566
static void destroy_task(struct GNUNET_SCHEDULER_Task *t)
Destroy a task (release associated resources)
Definition: scheduler.c:587
static struct GNUNET_SCHEDULER_Task * active_task
ID of the task that is running right now.
Definition: scheduler.c:360
static struct GNUNET_SCHEDULER_Task * ready_tail[GNUNET_SCHEDULER_PRIORITY_COUNT]
Tail of list of tasks ready to run right now, grouped by importance.
Definition: scheduler.c:371
static enum GNUNET_SCHEDULER_Priority current_priority
Priority of the task running right now.
Definition: scheduler.c:396
#define DELAY_THRESHOLD
Task that were in the queue for longer than this are reported if PROFILE_DELAYS is active.
Definition: scheduler.c:73
static unsigned int ready_count
Number of tasks on the ready list.
Definition: scheduler.c:390
struct GNUNET_TIME_Absolute get_timeout()
chooses the nearest timeout from all pending tasks, to be used to tell the driver the next wakeup tim...
Definition: scheduler.c:469
static const struct GNUNET_SCHEDULER_Driver * scheduler_driver
The driver used for the event loop.
Definition: scheduler.c:311
static struct GNUNET_SCHEDULER_Task * pending_timeout_head
List of tasks waiting ONLY for a timeout event.
Definition: scheduler.c:340
static enum GNUNET_SCHEDULER_Priority work_priority
Priority used currently in GNUNET_SCHEDULER_do_work().
Definition: scheduler.c:412
static void shutdown_if_no_lifeness(void)
Definition: scheduler.c:665
static struct GNUNET_SCHEDULER_Task * pending_timeout_tail
List of tasks waiting ONLY for a timeout event.
Definition: scheduler.c:349
static struct GNUNET_SCHEDULER_Task * ready_head[GNUNET_SCHEDULER_PRIORITY_COUNT]
Head of list of tasks ready to run right now, grouped by importance.
Definition: scheduler.c:365
static int current_lifeness
Value of the 'lifeness' flag for the current task.
Definition: scheduler.c:407
static enum GNUNET_SCHEDULER_Priority max_priority_added
Priority of the highest task added in the current select iteration.
Definition: scheduler.c:402
static struct GNUNET_SCHEDULER_Task * pending_timeout_last
Last inserted task waiting ONLY for a timeout event.
Definition: scheduler.c:355
#define LOG(kind,...)
Definition: scheduler.c:31
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:423
Saved async scope identifier or root scope.
int have_scope
GNUNET_YES unless this saved scope is the unnamed root scope.
struct GNUNET_AsyncScopeId scope_id
Saved scope.
void * cls
Closure to pass to the functions in this struct.
void(* set_wakeup)(void *cls, struct GNUNET_TIME_Absolute dt)
Set time at which we definitively want to get a wakeup call.
int(* del)(void *cls, struct GNUNET_SCHEDULER_Task *task)
Delete a task from the set of tasks to be run.
Information about an event relating to a file descriptor/socket.
int sock
Underlying OS handle the event was about.
const struct GNUNET_NETWORK_FDSet * read_ready
Set of file descriptors ready for reading; note that additional bits may be set that were not in the ...
enum GNUNET_SCHEDULER_Reason reason
Reason why the task is run now.
unsigned int fds_len
Length of the following array.
const struct GNUNET_SCHEDULER_FdInfo * fds
Array of length fds_len with information about ready FDs.
const struct GNUNET_NETWORK_FDSet * write_ready
Set of file descriptors ready for writing; note that additional bits may be set that were not in the ...
Entry in list of pending tasks.
Definition: scheduler.c:135
enum GNUNET_SCHEDULER_Priority priority
Task priority.
Definition: scheduler.c:203
void * callback_cls
Closure for the callback.
Definition: scheduler.c:154
int lifeness
Should the existence of this task in the queue be counted as reason to not shutdown the scheduler?
Definition: scheduler.c:219
struct GNUNET_AsyncScopeSave scope
Asynchronous scope of the task that scheduled this scope,.
Definition: scheduler.c:247
struct GNUNET_SCHEDULER_Task * next
This is a linked list.
Definition: scheduler.c:139
struct GNUNET_SCHEDULER_FdInfo * fds
Information about which FDs are ready for this task (and why).
Definition: scheduler.c:159
unsigned int fds_len
Size of the fds array.
Definition: scheduler.c:171
struct GNUNET_TIME_Absolute timeout
Absolute timeout value for the task, or GNUNET_TIME_UNIT_FOREVER_ABS for "no timeout".
Definition: scheduler.c:184
GNUNET_SCHEDULER_TaskCallback callback
Function to run when ready.
Definition: scheduler.c:149
Time for absolute times used by GNUnet, in microseconds.
uint64_t abs_value_us
The actual value.
uint64_t rel_value_us
The actual value.

References GNUNET_TIME_Absolute::abs_value_us, active_task, GNUNET_SCHEDULER_Task::callback, GNUNET_SCHEDULER_Task::callback_cls, GNUNET_SCHEDULER_Driver::cls, current_lifeness, current_priority, GNUNET_SCHEDULER_Driver::del, DELAY_THRESHOLD, destroy_task(), dump_backtrace(), GNUNET_SCHEDULER_FdInfo::et, GNUNET_SCHEDULER_TaskContext::fds, GNUNET_SCHEDULER_Task::fds, GNUNET_SCHEDULER_TaskContext::fds_len, GNUNET_SCHEDULER_Task::fds_len, get_timeout(), GNUNET_assert, GNUNET_async_scope_enter(), GNUNET_async_scope_get(), GNUNET_async_scope_restore(), GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_NETWORK_fdset_set_native(), GNUNET_NETWORK_fdset_zero(), GNUNET_NO, GNUNET_OK, GNUNET_SCHEDULER_ET_IN, GNUNET_SCHEDULER_ET_OUT, GNUNET_SCHEDULER_PRIORITY_COUNT, GNUNET_SCHEDULER_PRIORITY_KEEP, GNUNET_SCHEDULER_REASON_TIMEOUT, GNUNET_STRINGS_relative_time_to_string(), GNUNET_TIME_absolute_get(), GNUNET_TIME_absolute_get_duration(), GNUNET_YES, GNUNET_AsyncScopeSave::have_scope, GNUNET_SCHEDULER_Task::lifeness, LOG, max_priority_added, GNUNET_SCHEDULER_Task::next, pending_head, pending_tail, pending_timeout_head, pending_timeout_last, pending_timeout_tail, GNUNET_SCHEDULER_Task::priority, queue_ready_task(), GNUNET_SCHEDULER_TaskContext::read_ready, ready_count, ready_head, ready_tail, GNUNET_SCHEDULER_TaskContext::reason, GNUNET_SCHEDULER_Task::reason, GNUNET_TIME_Relative::rel_value_us, scheduler_driver, GNUNET_SCHEDULER_Task::scope, GNUNET_AsyncScopeSave::scope_id, GNUNET_SCHEDULER_Driver::set_wakeup, sh, shutdown_if_no_lifeness(), GNUNET_SCHEDULER_FdInfo::sock, tc, timeout, GNUNET_SCHEDULER_Task::timeout, work_priority, and GNUNET_SCHEDULER_TaskContext::write_ready.

Referenced by select_loop().

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◆ GNUNET_SCHEDULER_driver_init()

struct GNUNET_SCHEDULER_Handle* GNUNET_SCHEDULER_driver_init ( const struct GNUNET_SCHEDULER_Driver driver)

Function called by external event loop implementations to initialize the scheduler.

An external implementation has to provide driver which contains callbacks for the scheduler (see definition of struct GNUNET_SCHEDULER_Driver). The callbacks are used to instruct the external implementation to watch for events. If it detects any of those events it is expected to call GNUNET_SCHEDULER_do_work to let the scheduler handle it. If an event is related to a specific task (e.g. the scheduler gave instructions to watch a file descriptor), the external implementation is expected to mark that task ready before by calling GNUNET_SCHEDULER_task_ready.

This function has to be called before any tasks are scheduled and before GNUNET_SCHEDULER_do_work is called for the first time. It allocates resources that have to be freed again by calling GNUNET_SCHEDULER_driver_done.

This function installs the same signal handlers as GNUNET_SCHEDULER_run. This means SIGTERM (and other similar signals) will induce a call to GNUNET_SCHEDULER_shutdown during the next call to GNUNET_SCHEDULER_do_work. As a result, SIGTERM causes all active tasks to be scheduled with reason GNUNET_SCHEDULER_REASON_SHUTDOWN. (However, tasks added afterwards will execute normally!). Note that any particular signal will only shut down one scheduler; applications should always only create a single scheduler.

Parameters
driverto use for the event loop
Returns
handle to be passed to GNUNET_SCHEDULER_do_work and GNUNET_SCHEDULER_driver_done

Definition at line 2177 of file scheduler.c.

2178 {
2179  struct GNUNET_SCHEDULER_Handle *sh;
2180  const struct GNUNET_DISK_FileHandle *pr;
2181 
2182  /* scheduler must not be running */
2183  GNUNET_assert (NULL == scheduler_driver);
2185  /* general set-up */
2191  my_pid = getpid ();
2192  scheduler_driver = driver;
2193 
2194  /* install signal handlers */
2196  "Registering signal handlers\n");
2197  sh->shc_int = GNUNET_SIGNAL_handler_install (SIGINT,
2199  sh->shc_term = GNUNET_SIGNAL_handler_install (SIGTERM,
2201 #if (SIGTERM != GNUNET_TERM_SIG)
2204 #endif
2205  sh->shc_pipe = GNUNET_SIGNAL_handler_install (SIGPIPE,
2206  &sighandler_pipe);
2207  sh->shc_quit = GNUNET_SIGNAL_handler_install (SIGQUIT,
2209  sh->shc_hup = GNUNET_SIGNAL_handler_install (SIGHUP,
2211 
2212  /* Setup initial tasks */
2215  /* ensure this task runs first, by using a priority level reserved for
2216  the scheduler (not really shutdown, but start-up ;-) */
2220  NULL);
2223  pr,
2225  NULL);
2228  get_timeout ());
2229  /* begin main event loop */
2233  return sh;
2234 }
const struct GNUNET_DISK_FileHandle * GNUNET_DISK_pipe_handle(const struct GNUNET_DISK_PipeHandle *p, enum GNUNET_DISK_PipeEnd n)
Get the handle to a particular pipe end.
Definition: disk.c:1616
struct GNUNET_DISK_PipeHandle * GNUNET_DISK_pipe(enum GNUNET_DISK_PipeFlags pf)
Creates an interprocess channel.
Definition: disk.c:1442
@ GNUNET_DISK_PF_NONE
No special options, use non-blocking read/write operations.
@ GNUNET_DISK_PIPE_END_READ
The reading-end of a pipe.
@ GNUNET_SCHEDULER_PRIORITY_DEFAULT
Run with the default priority (normal P2P operations).
@ GNUNET_SCHEDULER_PRIORITY_SHUTDOWN
This is an internal priority level that is only used for tasks that are being triggered due to shutdo...
#define GNUNET_new(type)
Allocate a struct or union of the given type.
struct GNUNET_NETWORK_FDSet * GNUNET_NETWORK_fdset_create(void)
Creates an fd set.
Definition: network.c:1170
void GNUNET_NETWORK_fdset_handle_set(struct GNUNET_NETWORK_FDSet *fds, const struct GNUNET_DISK_FileHandle *h)
Add a file handle to the fd set.
Definition: network.c:1091
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_read_file(struct GNUNET_TIME_Relative delay, const struct GNUNET_DISK_FileHandle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready f...
Definition: scheduler.c:1624
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_with_priority(enum GNUNET_SCHEDULER_Priority prio, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified priority.
Definition: scheduler.c:1194
struct GNUNET_SIGNAL_Context * GNUNET_SIGNAL_handler_install(int signal, GNUNET_SIGNAL_Handler handler)
Install a signal handler that will be run if the given signal is received.
Definition: signal.c:51
#define GNUNET_TIME_UNIT_FOREVER_REL
Constant used to specify "forever".
#define GNUNET_TERM_SIG
The termination signal.
Definition: platform.h:233
static void sighandler_pipe()
Signal handler called for SIGPIPE.
Definition: scheduler.c:638
static struct GNUNET_SCHEDULER_Task * shutdown_pipe_task
Task for reading from a pipe that signal handlers will use to initiate shutdown.
Definition: scheduler.c:385
static struct GNUNET_SCHEDULER_Task * install_parent_control_task
Task for installing parent control handlers (it might happen that the scheduler is shutdown before th...
Definition: scheduler.c:379
static struct GNUNET_DISK_PipeHandle * shutdown_pipe_handle
Pipe used to communicate shutdown via signal.
Definition: scheduler.c:626
static void install_parent_control_handler(void *cls)
Definition: scheduler.c:899
static void sighandler_shutdown(void)
Signal handler called for signals that should cause us to shutdown.
Definition: scheduler.c:648
static void shutdown_pipe_cb(void *cls)
Definition: scheduler.c:908
static pid_t my_pid
Process ID of this process at the time we installed the various signal handlers.
Definition: scheduler.c:632
Handle used to access files (and pipes).
Argument to be passed from the driver to GNUNET_SCHEDULER_do_work().
Definition: scheduler.c:82

References GNUNET_SCHEDULER_Driver::cls, current_lifeness, current_priority, get_timeout(), GNUNET_assert, GNUNET_DISK_PF_NONE, GNUNET_DISK_pipe(), GNUNET_DISK_PIPE_END_READ, GNUNET_DISK_pipe_handle(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_NETWORK_fdset_create(), GNUNET_NETWORK_fdset_handle_set(), GNUNET_new, GNUNET_NO, GNUNET_SCHEDULER_add_read_file(), GNUNET_SCHEDULER_add_with_priority(), GNUNET_SCHEDULER_PRIORITY_DEFAULT, GNUNET_SCHEDULER_PRIORITY_SHUTDOWN, GNUNET_SIGNAL_handler_install(), GNUNET_TERM_SIG, GNUNET_TIME_UNIT_FOREVER_REL, GNUNET_YES, install_parent_control_handler(), install_parent_control_task, LOG, my_pid, scheduler_driver, GNUNET_SCHEDULER_Driver::set_wakeup, sh, shutdown_pipe_cb(), shutdown_pipe_handle, shutdown_pipe_task, sighandler_pipe(), and sighandler_shutdown().

Referenced by GNUNET_SCHEDULER_run().

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◆ GNUNET_SCHEDULER_driver_done()

void GNUNET_SCHEDULER_driver_done ( struct GNUNET_SCHEDULER_Handle sh)

Counter-part of GNUNET_SCHEDULER_driver_init.

Has to be called by external event loop implementations after the scheduler has shut down. This is the case if both of the following conditions are met:

  • all tasks the scheduler has added through the driver's add callback have been removed again through the driver's del callback
  • the timeout the scheduler has set through the driver's add_wakeup callback is FOREVER
Parameters
shthe handle returned by GNUNET_SCHEDULER_driver_init

Definition at line 2252 of file scheduler.c.

2253 {
2254  GNUNET_assert (NULL == pending_head);
2256  GNUNET_assert (NULL == shutdown_head);
2257  for (int i = 0; i != GNUNET_SCHEDULER_PRIORITY_COUNT; ++i)
2258  {
2259  GNUNET_assert (NULL == ready_head[i]);
2260  }
2263 
2264  /* uninstall signal handlers */
2266  GNUNET_SIGNAL_handler_uninstall (sh->shc_term);
2267 #if (SIGTERM != GNUNET_TERM_SIG)
2268  GNUNET_SIGNAL_handler_uninstall (sh->shc_gterm);
2269 #endif
2270  GNUNET_SIGNAL_handler_uninstall (sh->shc_pipe);
2271  GNUNET_SIGNAL_handler_uninstall (sh->shc_quit);
2274  shutdown_pipe_handle = NULL;
2275  scheduler_driver = NULL;
2276  GNUNET_free (sh);
2277 }
enum GNUNET_GenericReturnValue GNUNET_DISK_pipe_close(struct GNUNET_DISK_PipeHandle *p)
Closes an interprocess channel.
Definition: disk.c:1585
#define GNUNET_free(ptr)
Wrapper around free.
void GNUNET_NETWORK_fdset_destroy(struct GNUNET_NETWORK_FDSet *fds)
Releases the associated memory of an fd set.
Definition: network.c:1186
void GNUNET_SIGNAL_handler_uninstall(struct GNUNET_SIGNAL_Context *ctx)
Uninstall a previously installed signal handler.
Definition: signal.c:77
static struct GNUNET_SCHEDULER_Task * shutdown_head
Head of list of tasks waiting for shutdown.
Definition: scheduler.c:326

References GNUNET_assert, GNUNET_DISK_pipe_close(), GNUNET_free, GNUNET_NETWORK_fdset_destroy(), GNUNET_SCHEDULER_PRIORITY_COUNT, GNUNET_SIGNAL_handler_uninstall(), pending_head, pending_timeout_head, ready_head, scheduler_driver, sh, shutdown_head, and shutdown_pipe_handle.

Referenced by GNUNET_SCHEDULER_run().

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◆ GNUNET_SCHEDULER_driver_select()

struct GNUNET_SCHEDULER_Driver* GNUNET_SCHEDULER_driver_select ( void  )

Obtain the driver for using select() as the event loop.

Returns
NULL on error

Definition at line 2501 of file scheduler.c.

2502 {
2503  struct GNUNET_SCHEDULER_Driver *select_driver;
2504 
2505  select_driver = GNUNET_new (struct GNUNET_SCHEDULER_Driver);
2506 
2507  select_driver->add = &select_add;
2508  select_driver->del = &select_del;
2509  select_driver->set_wakeup = &select_set_wakeup;
2510 
2511  return select_driver;
2512 }
static void select_set_wakeup(void *cls, struct GNUNET_TIME_Absolute dt)
Definition: scheduler.c:2485
static int select_del(void *cls, struct GNUNET_SCHEDULER_Task *task)
Definition: scheduler.c:2455
static int select_add(void *cls, struct GNUNET_SCHEDULER_Task *task, struct GNUNET_SCHEDULER_FdInfo *fdi)
Definition: scheduler.c:2424
API an external event loop has to implement for GNUNET_SCHEDULER_driver_init.
int(* add)(void *cls, struct GNUNET_SCHEDULER_Task *task, struct GNUNET_SCHEDULER_FdInfo *fdi)
Add a task to be run if the conditions specified in the et field of the given fdi are satisfied.

References GNUNET_SCHEDULER_Driver::add, GNUNET_SCHEDULER_Driver::del, GNUNET_new, select_add(), select_del(), select_set_wakeup(), and GNUNET_SCHEDULER_Driver::set_wakeup.

Referenced by GNUNET_SCHEDULER_run().

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◆ GNUNET_SCHEDULER_run()

void GNUNET_SCHEDULER_run ( GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Initialize and run scheduler.

This function will return when all tasks have completed. On systems with signals, receiving a SIGTERM (and other similar signals) will cause GNUNET_SCHEDULER_shutdown to be run after the active task is complete. As a result, SIGTERM causes all shutdown tasks to be scheduled with reason GNUNET_SCHEDULER_REASON_SHUTDOWN. (However, tasks added afterwards will execute normally!). Note that any particular signal will only shut down one scheduler; applications should always only create a single scheduler.

Parameters
tasktask to run first (and immediately)
task_clsclosure of task

Definition at line 691 of file scheduler.c.

693 {
694  struct GNUNET_SCHEDULER_Handle *sh;
695  struct GNUNET_SCHEDULER_Driver *driver;
696  struct DriverContext context = {
697  .scheduled_head = NULL,
698  .scheduled_tail = NULL,
699  .timeout = GNUNET_TIME_absolute_get ()
700  };
701 
702  driver = GNUNET_SCHEDULER_driver_select ();
703  driver->cls = &context;
704  sh = GNUNET_SCHEDULER_driver_init (driver);
706  task_cls,
709  select_loop (sh,
710  &context);
712  GNUNET_free (driver);
713 }
static pa_context * context
Pulseaudio context.
void GNUNET_SCHEDULER_driver_done(struct GNUNET_SCHEDULER_Handle *sh)
Counter-part of GNUNET_SCHEDULER_driver_init.
Definition: scheduler.c:2252
struct GNUNET_SCHEDULER_Handle * GNUNET_SCHEDULER_driver_init(const struct GNUNET_SCHEDULER_Driver *driver)
Function called by external event loop implementations to initialize the scheduler.
Definition: scheduler.c:2177
void GNUNET_SCHEDULER_add_with_reason_and_priority(GNUNET_SCHEDULER_TaskCallback task, void *task_cls, enum GNUNET_SCHEDULER_Reason reason, enum GNUNET_SCHEDULER_Priority priority)
Continue the current execution with the given function.
Definition: scheduler.c:1037
struct GNUNET_SCHEDULER_Driver * GNUNET_SCHEDULER_driver_select()
Obtain the driver for using select() as the event loop.
Definition: scheduler.c:2501
static int select_loop(struct GNUNET_SCHEDULER_Handle *sh, struct DriverContext *context)
Definition: scheduler.c:2281
Driver context used by GNUNET_SCHEDULER_run.
Definition: scheduler.c:283

References GNUNET_SCHEDULER_Driver::cls, context, GNUNET_free, GNUNET_SCHEDULER_add_with_reason_and_priority(), GNUNET_SCHEDULER_driver_done(), GNUNET_SCHEDULER_driver_init(), GNUNET_SCHEDULER_driver_select(), GNUNET_SCHEDULER_PRIORITY_DEFAULT, GNUNET_SCHEDULER_REASON_STARTUP, GNUNET_TIME_absolute_get(), select_loop(), and sh.

Referenced by GNUNET_SERVICE_run_(), GNUNET_TESTING_main(), GNUNET_TESTING_service_run(), LEGACY_SERVICE_run(), and main().

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◆ GNUNET_SCHEDULER_run_with_optional_signals()

void GNUNET_SCHEDULER_run_with_optional_signals ( int  install_signals,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Initialize and run scheduler.

This function will return when all tasks have completed. When @ install_signals is GNUNET_YES, then this function behaves in the same was as GNUNET_SCHEDULER_run does. If @ install_signals is GNUNET_NO then no signal handlers are installed.

Parameters
install_signalswhether to install signals (GNUNET_YES/NO)
tasktask to run first (and immediately)
task_clsclosure of task

◆ GNUNET_SCHEDULER_shutdown()

void GNUNET_SCHEDULER_shutdown ( void  )

Request the shutdown of a scheduler.

Marks all tasks awaiting shutdown as ready. Note that tasks scheduled with GNUNET_SCHEDULER_add_shutdown() AFTER this call will be delayed until the next shutdown signal.

Definition at line 533 of file scheduler.c.

534 {
535  struct GNUNET_SCHEDULER_Task *pos;
536 
538  "GNUNET_SCHEDULER_shutdown\n");
539  if (NULL != install_parent_control_task)
540  {
543  }
544  if (NULL != shutdown_pipe_task)
545  {
547  shutdown_pipe_task = NULL;
548  }
549  while (NULL != (pos = shutdown_head))
550  {
553  pos);
555  queue_ready_task (pos);
556  }
557 }
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:943
static struct GNUNET_SCHEDULER_Task * shutdown_tail
Tail of list of tasks waiting for shutdown.
Definition: scheduler.c:331

References GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_SCHEDULER_cancel(), GNUNET_SCHEDULER_REASON_SHUTDOWN, install_parent_control_task, LOG, queue_ready_task(), GNUNET_SCHEDULER_Task::reason, shutdown_head, shutdown_pipe_task, and shutdown_tail.

Referenced by action_loop(), add_continuation(), addr_info_cb(), allocation_cb(), bandwidth_stats_cont(), barrier2_cb(), barrier_cb(), begin_cb(), cadet_connect_cb(), calculate_pow(), channel_ended(), check_all_done(), child_death_task(), churn_cb(), cleanup(), client_disconnect_cb(), commit_cb(), conn_status(), connect_check_run(), controller_event_cb(), controller_status_cb(), core_init(), decrypt_cb(), delay_shutdown_cb(), dht_connect_cb(), dht_connected(), directory_scan_cb(), directory_trim_complete(), disconnect_cadet_peers(), do_abort(), do_directory_scan(), do_get(), do_quit(), do_send(), do_shutdown(), do_timeout(), ego_callback(), end_cb(), end_error_cb(), end_operation_cb(), error_cb(), event_cb(), find_proof(), GCD_init(), get_cb(), get_ego(), GNUNET_CADET_TEST_cleanup(), GNUNET_DHT_TEST_cleanup(), handle_block(), handle_collect_result(), handle_data(), handle_result(), handle_revocation_union_request(), handle_stop(), handle_verify_result(), hello_callback(), hello_done_cb(), hello_result_cb(), host_habitable_cb(), host_registration_completion(), identity_cb(), identity_continuation(), init_callback(), init_socket(), iteration_done(), list_callback(), logger_run(), main_init(), manage_service_cb(), monitor_cb(), mq_error_handler(), nat_register(), next_round(), on_identity(), operation_timeout(), origin_create_cb(), parse(), path_callback(), peer_create_cb(), peer_init_handler(), peers_callback(), post_test_op(), post_test_shutdown_ready_cb(), print_finish(), print_indexed(), print_query_result(), print_revocation_result(), process_command_stdin(), process_lookup_result(), process_peer_string(), process_queue(), progress_cb(), put_cb(), read_stdio(), read_task(), reannounce_regex(), reply_handle(), requester_callback(), responder_callback(), rps_connect_complete_cb(), run(), run_service(), secret_ready_cb(), service_connect_comp(), session_disconnect_adapter(), set_result_cb(), show_peer(), shutdown_if_no_lifeness(), shutdown_pipe_cb(), shutdown_task(), sign_cb(), slave_status_cb(), start_callback(), start_dump(), start_insert(), state_machine(), statistics_done(), statistics_done_cb(), stats_cb(), stdin_cb(), stop_callback(), store_cb(), stun_read_task(), switch_to_speaker(), term_callback(), test_finished(), test_master(), test_run(), testing_main(), timeout_task(), timeout_task_cb(), tokenizer_cb(), trigger_shutdown(), tunnels_callback(), tx_end(), tx_start(), uri_ksk_continuation(), uri_sks_continuation(), view_update_handle(), wait_child(), and zone_iteration_error().

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◆ GNUNET_SCHEDULER_get_load()

unsigned int GNUNET_SCHEDULER_get_load ( enum GNUNET_SCHEDULER_Priority  p)

Get information about the current load of this scheduler.

Use this function to determine if an elective task should be added or simply dropped (if the decision should be made based on the number of tasks ready to run).

Parameters
ppriority-level to query, use KEEP to query the level of the current task, use COUNT to get the sum over all priority levels
Returns
number of tasks pending right now

Use this function to determine if an elective task should be added or simply dropped (if the decision should be made based on the number of tasks ready to run).

Parameters
ppriority level to look at
Returns
number of tasks pending right now

Definition at line 740 of file scheduler.c.

741 {
742  unsigned int ret;
743 
744  GNUNET_assert (NULL != active_task);
746  return ready_count;
749  ret = 0;
750  for (struct GNUNET_SCHEDULER_Task *pos = ready_head[check_priority (p)];
751  NULL != pos;
752  pos = pos->next)
753  ret++;
754  return ret;
755 }
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
static struct GNUNET_OS_Process * p
Helper process we started.
Definition: gnunet-uri.c:37
static enum GNUNET_SCHEDULER_Priority check_priority(enum GNUNET_SCHEDULER_Priority p)
Check that the given priority is legal (and return it).
Definition: scheduler.c:454

References active_task, check_priority(), current_priority, GNUNET_assert, GNUNET_SCHEDULER_PRIORITY_COUNT, GNUNET_SCHEDULER_PRIORITY_KEEP, GNUNET_SCHEDULER_Task::next, p, ready_count, ready_head, and ret.

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◆ GNUNET_SCHEDULER_get_task_context()

const struct GNUNET_SCHEDULER_TaskContext* GNUNET_SCHEDULER_get_task_context ( void  )

Obtain the reasoning why the current task was started.

Returns
task context with information why the current task is run

Obtain the reasoning why the current task was started.

Returns
current tasks' scheduler context

Definition at line 723 of file scheduler.c.

724 {
725  GNUNET_assert (NULL != active_task);
726  return &tc;
727 }

References active_task, GNUNET_assert, and tc.

Referenced by cmd_read(), connect_probe_continuation(), do_read(), do_s5r_read(), do_udp_read(), maint_child_death(), process_listen_socket(), read_dns4(), read_dns6(), read_response(), receive_ready(), tcp_send(), transmit_ready(), udp_plugin_select_v4(), udp_plugin_select_v6(), unix_plugin_select_read(), and unix_plugin_select_write().

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◆ GNUNET_SCHEDULER_cancel()

void* GNUNET_SCHEDULER_cancel ( struct GNUNET_SCHEDULER_Task task)

Cancel the task with the specified identifier.

The task must not yet have run. Only allowed to be called as long as the scheduler is running, that is one of the following conditions is met:

Parameters
taskid of the task to cancel
Returns
original closure of the task

Definition at line 943 of file scheduler.c.

944 {
946  int is_fd_task;
947  void *ret;
948 
950  "canceling task %p\n",
951  task);
952 
953  /* scheduler must be running */
955  is_fd_task = (NULL != task->fds);
956  if (is_fd_task)
957  {
958  int del_result = scheduler_driver->del (scheduler_driver->cls, task);
959  if (GNUNET_OK != del_result)
960  {
962  "driver could not delete task\n");
963  GNUNET_assert (0);
964  }
965  }
966  if (! task->in_ready_list)
967  {
968  if (is_fd_task)
969  {
971  pending_tail,
972  task);
973  }
974  else if (GNUNET_YES == task->on_shutdown)
975  {
978  task);
979  }
980  else
981  {
984  task);
985  if (pending_timeout_last == task)
986  pending_timeout_last = NULL;
987  }
988  }
989  else
990  {
991  p = check_priority (task->priority);
993  ready_tail[p],
994  task);
995  ready_count--;
996  }
997  ret = task->callback_cls;
998  destroy_task (task);
999  return ret;
1000 }
GNUNET_SCHEDULER_Priority
Valid task priorities.
int on_shutdown
Is this task run on shutdown?
Definition: scheduler.c:224

References GNUNET_SCHEDULER_Task::callback_cls, check_priority(), GNUNET_SCHEDULER_Driver::cls, GNUNET_SCHEDULER_Driver::del, destroy_task(), GNUNET_SCHEDULER_Task::fds, GNUNET_assert, GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_OK, GNUNET_YES, GNUNET_SCHEDULER_Task::in_ready_list, LOG, GNUNET_SCHEDULER_Task::on_shutdown, p, pending_head, pending_tail, pending_timeout_head, pending_timeout_last, pending_timeout_tail, GNUNET_SCHEDULER_Task::priority, ready_count, ready_head, ready_tail, ret, scheduler_driver, shutdown_head, and shutdown_tail.

Referenced by abort_all_requests(), abort_test(), adjust_running_peers(), announce_next_regex(), ats_perf_cb(), backtalker_monotime_store_cb(), barrier2_cb(), bi_destroy(), cadet_mq_cancel_impl(), calculate_pow_shutdown(), call_continuation(), call_master(), cancel_aps(), cancel_interrupt_task(), cancel_pending_req(), channel_destroy(), check_autoconfig_finished(), check_completed(), check_dht_local_get_result_seen(), check_disconnect(), check_key_type(), child_management_done(), clean_request(), cleaning_task(), cleanup(), cleanup_cth(), cleanup_finish(), cleanup_handle(), cleanup_ncc(), cleanup_occ(), cleanup_rocc(), cleanup_rs(), cleanup_s5r(), cleanup_task(), cleanup_validation_entry(), client_connect(), client_delete_session(), client_disconnect_cb(), client_receive(), client_schedule(), client_wake_up(), connect_fail_continuation(), connect_probe_continuation(), connect_success_continuation(), connection_client_cancel_impl(), connection_client_destroy_impl(), connection_ready_cb(), consider_peer_activate(), consider_peer_destroy(), consider_sending_fc(), consume_ticket(), continuation_print(), continue_store_activity(), cummulative_ack(), curl_download_prepare(), curl_task_download(), data_sent_cb(), default_reply_handle(), destroy_ai(), destroy_channel(), destroy_handle(), destroy_iterator_cb(), destroy_operation(), destroy_peer(), destroy_pooled_connection(), destroy_service(), destroy_srv_room(), destroy_sub(), destroy_tunnel(), discard_oldest_mc(), disconnect_cb(), disconnect_neighbour(), disconnect_notify(), dns_result_parser(), dns_result_processor(), do_abort(), do_cleanup(), do_error(), do_s5r_read(), do_shutdown(), do_stop_task(), do_suspend(), done_finish(), download_progress_cb(), exp_cb(), expire_task_cancel(), finish_test(), free_ack_cummulator_cb(), free_active_lookup(), free_address_list_entry(), free_backtalker(), free_dv_route(), free_fragment_message(), free_macendpoint(), free_neighbour(), free_peer(), free_pending_request(), free_qe(), free_queue(), free_queue_entry(), free_tmps(), free_virtual_link(), GAS_preference_done(), GCC_destroy(), GCC_handle_connection_create_ack(), GCC_handle_duplicate_create(), GCC_transmit(), GCCH_bind(), GCCH_channel_local_destroy(), GCCH_handle_channel_open_ack(), GCCH_handle_channel_plaintext_data_ack(), GCCH_handle_local_data(), GCD_hello_update(), GCD_shutdown(), GCO_shutdown(), GCP_add_connection(), GCT_change_estate(), GCT_destroy_tunnel_now(), GCT_handle_encrypted(), GCT_handle_kx(), GCT_send(), GDS_CLIENTS_stop(), GDS_u_disconnect(), get_cadet(), get_iter(), get_lt_delete_it(), get_request_socket(), get_sender_delete_it(), GN_nat_status_changed(), GN_stop_gnunet_nat_server_(), GNS_resolver_lookup_cancel(), GNUNET_ABD_disconnect(), GNUNET_ARM_disconnect(), GNUNET_ARM_monitor_stop(), GNUNET_ARM_operation_cancel(), GNUNET_ATS_connectivity_done(), GNUNET_ATS_performance_done(), GNUNET_ATS_scheduling_done(), GNUNET_ATS_solver_generate_preferences_stop(), GNUNET_ATS_solver_generate_property_stop(), GNUNET_ATS_solver_logging_free(), GNUNET_ATS_solver_logging_stop(), GNUNET_ATS_solvers_experimentation_stop(), GNUNET_BANDWIDTH_tracker_notification_stop(), GNUNET_CADET_disconnect(), GNUNET_CADET_get_channel_cancel(), GNUNET_CADET_get_path_cancel(), GNUNET_CADET_list_peers_cancel(), GNUNET_CADET_list_tunnels_cancel(), GNUNET_cancel_wait_barrier(), GNUNET_CONNECTION_destroy(), GNUNET_CONNECTION_notify_transmit_ready(), GNUNET_CONNECTION_notify_transmit_ready_cancel(), GNUNET_CONNECTION_receive_cancel(), GNUNET_CORE_disconnect(), GNUNET_CRYPTO_hash_file_cancel(), GNUNET_CURL_gnunet_rc_destroy(), GNUNET_CURL_gnunet_scheduler_reschedule(), GNUNET_DATASTORE_disconnect(), GNUNET_DEFRAGMENT_context_destroy(), GNUNET_DHT_disconnect(), GNUNET_DNS_disconnect(), GNUNET_DNSSTUB_resolve_cancel(), GNUNET_FRAGMENT_context_destroy(), GNUNET_FRAGMENT_process_ack(), GNUNET_FS_dequeue_(), GNUNET_FS_directory_scan_abort(), GNUNET_FS_download_signal_suspend_(), GNUNET_FS_publish_ksk_cancel(), GNUNET_FS_publish_signal_suspend_(), GNUNET_FS_publish_stop(), GNUNET_FS_publish_ublock_cancel_(), GNUNET_FS_queue_(), GNUNET_FS_search_pause(), GNUNET_FS_search_probe_progress_(), GNUNET_FS_search_signal_suspend_(), GNUNET_FS_search_start_searching_(), GNUNET_FS_search_stop(), GNUNET_FS_search_stop_probe_(), GNUNET_FS_stop(), GNUNET_FS_stop_probe_ping_task_(), GNUNET_GNS_disconnect(), GNUNET_HELPER_destroy(), GNUNET_HELPER_kill(), GNUNET_HELPER_send_cancel(), GNUNET_HELPER_wait(), GNUNET_HOSTLIST_client_stop(), GNUNET_HOSTLIST_server_stop(), GNUNET_MQ_destroy(), GNUNET_NAMECACHE_disconnect(), GNUNET_NAMESTORE_disconnect(), GNUNET_NAT_AUTO_test_start(), GNUNET_NAT_AUTO_test_stop(), GNUNET_NAT_autoconfig_cancel(), GNUNET_NAT_mini_get_external_ipv4_cancel_(), GNUNET_NAT_mini_map_stop(), GNUNET_NAT_test_start(), GNUNET_NAT_test_stop(), GNUNET_NAT_unregister(), GNUNET_NSE_disconnect(), GNUNET_NT_scanner_done(), GNUNET_OS_command_stop(), GNUNET_PEERINFO_disconnect(), GNUNET_PEERINFO_notify_cancel(), GNUNET_PQ_event_listen_cancel(), GNUNET_RECLAIM_disconnect(), GNUNET_RESOLVER_disconnect(), GNUNET_RESOLVER_hostname_get(), GNUNET_RESOLVER_ip_get(), GNUNET_RESOLVER_request_cancel(), GNUNET_SCHEDULER_shutdown(), GNUNET_SERVER_client_disconnect(), GNUNET_SERVER_destroy(), GNUNET_SERVER_disable_receive_done_warning(), GNUNET_SERVER_receive_done(), GNUNET_SERVER_stop_listening(), GNUNET_SERVER_suspend(), GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_disable_continue_warning(), GNUNET_SERVICE_client_drop(), GNUNET_SET_listen_cancel(), GNUNET_SETI_listen_cancel(), GNUNET_SETU_listen_cancel(), GNUNET_SPEEDUP_stop_(), GNUNET_STATISTICS_destroy(), GNUNET_TESTBED_is_host_habitable_cancel(), GNUNET_TESTBED_LOGGER_disconnect(), GNUNET_TESTBED_LOGGER_flush_cancel(), GNUNET_TRANSPORT_application_done(), GNUNET_TRANSPORT_core_disconnect(), GNUNET_TRANSPORT_hello_get_cancel(), GNUNET_TRANSPORT_manipulation_disconnect(), GNUNET_TRANSPORT_monitor_peers_cancel(), GNUNET_TRANSPORT_monitor_plugins_cancel(), GNUNET_TRANSPORT_TESTING_connect_peers_cancel(), GNUNET_TRANSPORT_TESTING_stop_peer(), GNUNET_VPN_disconnect(), GSC_KX_done(), GSC_SESSIONS_confirm_typemap(), GSC_SESSIONS_end(), GSF_cadet_release_clients(), GSF_connected_peer_done_(), GSF_peer_disconnect_handler(), GSF_pending_request_cancel_(), GSF_plan_notify_peer_disconnect_(), GSF_push_done_(), GSF_put_done_(), GST_blacklist_test_cancel(), GST_clear_fopcq(), GST_connection_pool_get_handle_done(), GST_forwarded_operation_reply_relay(), GST_free_lcf(), GST_hello_stop(), GST_manipulation_peer_disconnect(), GST_neighbour_get_connection_cancel(), GST_neighbours_send(), GST_neighbours_session_terminated(), GST_notify_client_disconnect_oc(), GST_notify_client_disconnect_peers(), GST_stats_destroy(), handle_announce(), handle_core_disconnect(), handle_disconnect_confirm(), handle_dns_response(), handle_encrypted(), handle_external_ip(), handle_flow_control(), handle_incoming_msg(), handle_monitor_next(), handle_p2p_estimate(), handle_plaintext_channel_open(), handle_pong(), handle_stream_input(), handle_stun(), handle_tcp_nat_probe(), handle_transport_notify_disconnect(), helper_mst(), http_client_plugin_send(), http_client_plugin_session_disconnect(), http_client_plugin_update_inbound_delay(), http_server_plugin_update_inbound_delay(), incoming_channel(), incoming_destroy(), insert_sorted(), kill_httpd(), LEGACY_SERVICE_stop(), libgnunet_plugin_dhtu_ip_done(), LIBGNUNET_PLUGIN_TRANSPORT_DONE(), libgnunet_plugin_transport_http_client_done(), libgnunet_plugin_transport_unix_done(), maint_child_death(), manage_first_hop_mq(), mhd_log_callback(), monitor_unblock(), mq_cancel(), mq_error_handler(), neighbour_connect_cb(), neighbour_delete(), notify_connect(), numeric_reverse(), occ_cache_get_handle_ats_occ_cb(), occ_cache_get_handle_core_cb(), on_identity(), on_message(), oprelease_get_stats(), outbound_bw_tracker_update(), overlay_connect_get_config(), overlay_connect_notify(), p1_transport_connect_cache_callback(), p2_transport_connect_cache_callback(), parent_control_handler(), plugin_env_session_end(), post_test_op(), primary_task(), process_job_queue(), process_local_reply(), process_peer_iteration_cb(), process_peer_monitoring_cb(), process_peer_string(), process_queue(), process_stat_done(), publish_progress_cb(), queue_destroy(), rc_cleanup_operations(), reconnect(), reconnect_later(), reconstruct_cont(), refresh_hello(), refresh_timeout_task(), regex_found_handler(), remove_channel_ctx(), remove_stream_request(), reschedule_hellos(), reset_cadet_async(), reset_handles(), RPS_sampler_request_cancel(), RPS_sampler_request_single_info_cancel(), rq_remove(), run(), run_httpd_now(), run_mhd_now(), schedule_current_round(), schedule_httpd(), schedule_next_hello(), schedule_read(), schedule_select_v4(), schedule_select_v6(), schedule_transmit_on_queue(), scheduler_fd_cb(), search_result_freeze_probes(), select_read_cb(), send_disconnect_cont(), send_key(), send_response(), server_delete_session(), server_reschedule(), server_schedule(), service_mq_cancel(), set_state_and_timeout(), shutdown_cb(), shutdown_hook(), shutdown_op(), shutdown_pch(), shutdown_task(), signal_transmit_error(), slave_event_cb(), start_process(), start_test(), start_typemap_task(), statistics_da(), stats_cont(), stop_helper(), stop_operation(), stop_peer_run(), stop_stun(), switch_to_speaker(), tcp_plugin_disconnect_session(), tcp_plugin_update_inbound_delay(), teardown_service(), terminate_ac_activities(), terminate_task(), test_master(), test_nat_punched(), test_run(), timeout_episode(), timeout_experiment(), transmit_ready(), transmit_send_continuation(), transport_addr_to_str_cb(), trigger_flush_notification(), try_transmission(), u_address_add(), u_address_del(), udp_disconnect_session(), unix_plugin_session_disconnect(), update_backtalker_monotime(), update_excess(), update_flood_times(), update_next_challenge_time(), update_timeout(), wlan_plugin_disconnect_session(), and zone_iteration_error().

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◆ GNUNET_SCHEDULER_add_with_reason_and_priority()

void GNUNET_SCHEDULER_add_with_reason_and_priority ( GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls,
enum GNUNET_SCHEDULER_Reason  reason,
enum GNUNET_SCHEDULER_Priority  priority 
)

Continue the current execution with the given function.

This is similar to the other "add" functions except that there is no delay and the reason code can be specified.

Parameters
taskmain function of the task
task_clsclosure for task
reasonreason for task invocation
prioritypriority to use for the task

Definition at line 1037 of file scheduler.c.

1044 {
1045  struct GNUNET_SCHEDULER_Task *t;
1046 
1047  /* scheduler must be running */
1048  GNUNET_assert (NULL != scheduler_driver);
1049  GNUNET_assert (NULL != task);
1050  t = GNUNET_new (struct GNUNET_SCHEDULER_Task);
1051  t->read_fd = -1;
1052  t->write_fd = -1;
1053  t->callback = task;
1054  t->callback_cls = task_cls;
1055 #if PROFILE_DELAYS
1056  t->start_time = GNUNET_TIME_absolute_get ();
1057 #endif
1058  t->reason = reason;
1062  "Adding continuation task %p\n",
1063  t);
1064  init_backtrace (t);
1065  queue_ready_task (t);
1066 }
static struct GNUNET_SCHEDULER_Task * t
Main task.
static void init_backtrace(struct GNUNET_SCHEDULER_Task *t)
Initialize backtrace data for task t.
Definition: scheduler.c:1009
int write_fd
Set if we only wait for writing to a single FD, otherwise -1.
Definition: scheduler.c:213
int read_fd
Set if we only wait for reading from a single FD, otherwise -1.
Definition: scheduler.c:208

References GNUNET_SCHEDULER_Task::callback, GNUNET_SCHEDULER_Task::callback_cls, check_priority(), current_lifeness, GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_new, GNUNET_TIME_absolute_get(), init_backtrace(), GNUNET_SCHEDULER_Task::lifeness, LOG, GNUNET_SCHEDULER_Task::priority, queue_ready_task(), GNUNET_SCHEDULER_Task::read_fd, GNUNET_SCHEDULER_Task::reason, scheduler_driver, t, and GNUNET_SCHEDULER_Task::write_fd.

Referenced by GNUNET_SCHEDULER_run().

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◆ GNUNET_SCHEDULER_add_with_priority()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_with_priority ( enum GNUNET_SCHEDULER_Priority  prio,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run with a specified priority.

Parameters
priohow important is the new task?
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

Definition at line 1194 of file scheduler.c.

1197 {
1199  prio,
1200  task,
1201  task_cls);
1202 }
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed_with_priority(struct GNUNET_TIME_Relative delay, enum GNUNET_SCHEDULER_Priority priority, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1170
#define GNUNET_TIME_UNIT_ZERO
Relative time zero.

References GNUNET_SCHEDULER_add_delayed_with_priority(), and GNUNET_TIME_UNIT_ZERO.

Referenced by begin_service(), block_proc(), create_srv_room(), deserialize_publish_file(), ds_put_cont(), encode_cont(), file_hash_task(), finish_reserve(), GNUNET_CRYPTO_hash_file(), GNUNET_FS_publish_start(), GNUNET_SCHEDULER_driver_init(), GSF_connected_peer_init_(), maint_child_death(), publish_kblocks_cont(), and run().

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◆ GNUNET_SCHEDULER_add_now()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_now ( GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run as soon as possible.

Note that this does not guarantee that this will be the next task that is being run, as other tasks with higher priority (or that are already ready to run) might get to run first. Just as with delays, clients must not rely on any particular order of execution between tasks scheduled concurrently.

The task will be run with the DEFAULT priority.

Parameters
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

Definition at line 1267 of file scheduler.c.

1269 {
1270  struct GNUNET_SCHEDULER_Task *t;
1271 
1272  t = GNUNET_new (struct GNUNET_SCHEDULER_Task);
1274  t->callback = task;
1275  t->callback_cls = task_cls;
1276  t->read_fd = -1;
1277  t->write_fd = -1;
1278 #if PROFILE_DELAYS
1279  t->start_time = GNUNET_TIME_absolute_get ();
1280 #endif
1285  queue_ready_task (t);
1286  init_backtrace (t);
1287  return t;
1288 }
#define GNUNET_TIME_UNIT_ZERO_ABS
Absolute time zero.

References GNUNET_SCHEDULER_Task::callback, GNUNET_SCHEDULER_Task::callback_cls, current_lifeness, current_priority, GNUNET_async_scope_get(), GNUNET_new, GNUNET_TIME_absolute_get(), GNUNET_TIME_UNIT_ZERO_ABS, GNUNET_YES, init_backtrace(), GNUNET_SCHEDULER_Task::lifeness, GNUNET_SCHEDULER_Task::on_shutdown, GNUNET_SCHEDULER_Task::priority, queue_ready_task(), GNUNET_SCHEDULER_Task::read_fd, GNUNET_SCHEDULER_Task::scope, t, GNUNET_SCHEDULER_Task::timeout, and GNUNET_SCHEDULER_Task::write_fd.

Referenced by abort_test(), add_attribute_cont(), add_continuation(), add_credential_cont(), add_valid_address(), advertise_dns_exit(), announce_regex(), ats_perf_cb(), attr_delete_cont(), attr_store_cont(), authorize_endpoint(), backchannel_check_run(), barrier_cb(), build_authz_response(), build_redirect(), bulk_tx_commit_cb(), bulk_tx_start(), cadet_mq_send_impl(), check_autoconfig_finished(), check_dht_local_get_result_seen(), check_monitor_start(), client_connect(), client_disconnect_cb(), client_response_handler(), code_redirect(), collect_error_cb(), collect_finished_cb(), conclude_cb(), connect_cb(), connection_client_send_impl(), connection_ready(), consistency_iter_fin(), consume_cont(), consume_fail(), consume_ticket_cont(), continuation_print(), continue_with_gns2dns(), controller_status_cb(), core_startup_cb(), cr_cont(), create_did(), create_did_cb(), create_did_ego_create_cb(), create_did_ego_lockup_cb(), create_download_context(), create_finished(), cred_delete_cont(), cred_error(), cred_iter_finished(), cred_store_cont(), default_reply_handle(), del_attr_finished(), del_finished(), delete_attribute_cont(), delete_credential_cont(), delete_finished_cb(), deserialize_download(), disconnect_notify(), dns_result_parser(), do_abort(), do_announce(), do_error(), do_finished(), do_reconnect(), download_progress_cb(), download_timeout(), dump_pc(), ego_callback(), ego_create(), ego_delete_name(), ego_delete_pubkey(), ego_edit(), ego_edit_name(), ego_edit_pubkey(), ego_get_all(), ego_get_name(), ego_get_pubkey(), ego_get_response(), ego_sign_data(), ego_sign_data_cb(), experiment_done_cb(), fail_resolution(), find_timed_out(), finish_profiler(), finish_round(), finished_cont(), free_dv_route(), free_neighbour(), gather_dht_put_blocks(), GCCH_bind(), GCCH_channel_local_destroy(), GCCH_handle_duplicate_open(), GCCH_tunnel_up(), GCP_attach_path(), GCT_change_estate(), GCT_create_tunnel(), GCT_handle_encrypted(), GCT_handle_kx(), GCT_send(), GDS_u_connect(), get_cont(), get_gns_cont(), get_oidc_dir_path(), GN_nat_status_changed(), GNS_resolver_lookup(), GNS_resolver_lookup_cancel(), GNUNET_ARM_request_service_start(), GNUNET_ATS_solver_generate_preferences_start(), GNUNET_ATS_solver_generate_property_start(), GNUNET_ATS_solver_logging_start(), GNUNET_cancel_barrier(), GNUNET_CLIENT_connect(), GNUNET_CONNECTION_notify_transmit_ready(), GNUNET_CURL_gnunet_scheduler_reschedule(), GNUNET_DNS_connect(), GNUNET_DNSSTUB_resolve(), GNUNET_FRAGMENT_context_create(), GNUNET_FRAGMENT_process_ack(), GNUNET_FS_dequeue_(), GNUNET_FS_download_start_task_(), GNUNET_FS_publish_ksk(), GNUNET_FS_publish_ublock_(), GNUNET_FS_queue_(), GNUNET_FS_search_probe_progress_(), GNUNET_HOSTLIST_client_start(), GNUNET_MQ_impl_send_continue(), GNUNET_NAT_AUTO_test_start(), GNUNET_NAT_mini_get_external_ipv4_(), GNUNET_NAT_test_start(), GNUNET_RESOLVER_hostname_get(), GNUNET_RESOLVER_ip_get(), GNUNET_SCHEDULER_add_now_with_lifeness(), GNUNET_SERVER_receive_done(), GNUNET_SERVICE_client_continue(), GNUNET_SERVICE_client_drop(), GNUNET_TESTING_interpreter_fail(), GNUNET_TESTING_run(), GNUNET_TRANSPORT_TESTING_connect_peers(), GNUNET_TRANSPORT_TESTING_start_peer(), GNUNET_wait_barrier(), GSF_plan_add_(), GSF_put_init_(), GST_blacklist_test_allowed(), GST_connection_pool_get_handle(), GST_neighbours_handle_disconnect_message(), GST_neighbours_send(), GST_neighbours_session_terminated(), GST_stats_init(), GST_validation_handle_address(), handle_add_address(), handle_add_queue_message(), handle_attribute_store_message(), handle_client_blacklist_reply(), handle_credential_store_message(), handle_disconnect_confirm(), handle_gns_redirect_result(), handle_gns_resolution_result(), handle_gns_response(), handle_helper_message(), handle_link_controllers(), handle_local_ack(), handle_monitor_next(), handle_monitor_start(), handle_p2p_estimate(), handle_p2p_reply(), handle_stop(), handle_stream_input(), handler_advertisement(), hello_callback(), hello_iter_cb(), host_registration_completion(), identity_cb(), idle(), iface_proc(), import_next_cb(), init_callback(), interpreter_next(), iter_error(), iter_finished(), iteration_completion_cb(), kb_put_cont(), kill_session(), lcf_forwarded_operation_timeout(), lcf_proc_cc(), lcf_proc_task(), libgnunet_plugin_dhtu_ip_init(), libgnunet_plugin_transport_unix_init(), list_attribute_cont(), list_callback(), list_credential_cont(), list_tickets_cont(), login_redirect(), lookup_hole_external(), lookup_redirect_uri_result(), main_task(), marked_deleted(), message_sent_cont(), mq_init(), namestore_add_or_update(), namestore_delete(), namestore_get(), namestore_import(), namestore_iteration_error(), namestore_list_finished(), new_sub(), next_rnd(), notification_pipe_cb(), notify_disconnect(), ns_get_lookup_cb(), ns_lookup_cb(), ns_lookup_error_cb(), occ_cache_get_handle_ats_occ_cb(), occ_cache_get_handle_core_cb(), offending_attr_delete_cont(), oidc_attr_collect_finished_cb(), oidc_iteration_error(), oidc_ticket_issue_cb(), on_message(), on_peer(), opstart_get_handle_transport(), options_cont(), origin_create_cb(), origin_lookup_cb(), overlay_connect_get_config(), overlay_connect_notify(), p1_transport_connect_cache_callback(), p2_transport_connect(), p2_transport_connect_cache_callback(), parse_hello_uri(), peer_create_cb(), peerinfo_list_finished(), peerinfo_list_iteration(), post_ego_iteration(), primary_task(), print_did_document(), print_my_uri(), print_peer_info(), process_attrs(), process_delete(), process_dht_put_content(), process_dids(), process_helper_msgs(), process_result(), process_rq_task(), process_rvk(), process_stdin(), progress_cb(), publish_progress_cb(), purge_attributes(), put_cont(), queue_read_kx(), read_stdio(), reconnect_later(), reconstruct_cb(), recursive_dns_resolution(), recursive_gns2dns_resolution(), recursive_pkey_resolution(), refresh_hello(), regex_found_handler(), regex_iterator(), remove_did_document(), remove_did_document_namestore_cb(), replace_did_document(), report_success(), reschedule_hellos(), reset_cadet_async(), resolve_did(), revoke_ticket_cont(), rocc_cache_get_handle_transport_cb(), RPS_sampler_get_n_rand_peers(), RPS_sampler_get_rand_peer_info(), rq_add(), run(), run_httpd_now(), run_mhd_now(), rvk_move_attr_cb(), rvk_ticket_update_finished(), schedule_channel_destruction(), schedule_next_hello(), schedule_next_task(), search_timed_out(), send_disconnect_cont(), server_configure_plugin(), service_mq_send(), set_cont(), setup_neighbour(), setup_sender(), shutdown_task(), slave_event_cb(), start_callback(), start_peer_run(), start_probe_ping_task(), start_process(), start_resolver_lookup(), stat_timeout_task(), state_machine(), stats_cont(), stop_callback(), store_completed_cb(), store_cont(), task_check(), term_callback(), test_connection_ok(), test_icmp_server(), test_master(), test_monitor_clients(), ticket_issue_cb(), ticket_iter_err(), ticket_iter_fin(), ticket_processed(), ticket_updated(), timeout_task(), token_endpoint(), transmit_send_continuation(), transport_addr_to_str_cb(), trigger_flush_notification(), trigger_notifications(), tx_start(), u_address_add(), u_address_del(), userinfo_endpoint(), zone_iteration_error(), and zone_iteration_finished().

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◆ GNUNET_SCHEDULER_add_shutdown()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_shutdown ( GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run on shutdown, that is when a CTRL-C signal is received, or when GNUNET_SCHEDULER_shutdown() is being invoked.

Parameters
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

Definition at line 1302 of file scheduler.c.

1304 {
1305  struct GNUNET_SCHEDULER_Task *t;
1306 
1307  /* scheduler must be running */
1308  GNUNET_assert (NULL != scheduler_driver);
1309  GNUNET_assert (NULL != task);
1310  t = GNUNET_new (struct GNUNET_SCHEDULER_Task);
1312  t->callback = task;
1313  t->callback_cls = task_cls;
1314  t->read_fd = -1;
1315  t->write_fd = -1;
1316 #if PROFILE_DELAYS
1317  t->start_time = GNUNET_TIME_absolute_get ();
1318 #endif
1322  t->lifeness = GNUNET_NO;
1324  shutdown_tail,
1325  t);
1327  "Adding shutdown task %p\n",
1328  t);
1329  init_backtrace (t);
1330  return t;
1331 }
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
#define GNUNET_TIME_UNIT_FOREVER_ABS
Constant used to specify "forever".

References GNUNET_SCHEDULER_Task::callback, GNUNET_SCHEDULER_Task::callback_cls, GNUNET_assert, GNUNET_async_scope_get(), GNUNET_CONTAINER_DLL_insert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_new, GNUNET_NO, GNUNET_SCHEDULER_PRIORITY_SHUTDOWN, GNUNET_TIME_absolute_get(), GNUNET_TIME_UNIT_FOREVER_ABS, GNUNET_YES, init_backtrace(), GNUNET_SCHEDULER_Task::lifeness, LOG, GNUNET_SCHEDULER_Task::on_shutdown, GNUNET_SCHEDULER_Task::priority, GNUNET_SCHEDULER_Task::read_fd, scheduler_driver, GNUNET_SCHEDULER_Task::scope, shutdown_head, shutdown_tail, t, GNUNET_SCHEDULER_Task::timeout, and GNUNET_SCHEDULER_Task::write_fd.

Referenced by connect_check_run(), create_service(), ego_callback(), GNUNET_OS_install_parent_control_handler(), GNUNET_TESTBED_run(), init(), init_cb(), interrupt(), logger_run(), main_init(), main_task(), on_identity(), program_main(), run(), run_service(), service_main(), service_task(), setup_ac(), shutdown_task(), test_master(), test_run(), testbed_run(), testing_main(), and tmain().

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◆ GNUNET_SCHEDULER_add_now_with_lifeness()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_now_with_lifeness ( int  lifeness,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run as soon as possible with the (transitive) ignore-shutdown flag either explicitly set or explicitly enabled.

This task (and all tasks created from it, other than by another call to this function) will either count or not count for the 'lifeness' of the process. This API is only useful in a few special cases.

Parameters
lifenessGNUNET_YES if the task counts for lifeness, GNUNET_NO if not.
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

Definition at line 1335 of file scheduler.c.

1338 {
1339  struct GNUNET_SCHEDULER_Task *ret;
1340 
1341  ret = GNUNET_SCHEDULER_add_now (task, task_cls);
1342  ret->lifeness = lifeness;
1343  return ret;
1344 }
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1267

References GNUNET_SCHEDULER_add_now(), GNUNET_SCHEDULER_Task::lifeness, and ret.

Referenced by GNUNET_SPEEDUP_start_().

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◆ GNUNET_SCHEDULER_add_delayed()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_delayed ( struct GNUNET_TIME_Relative  delay,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run with a specified delay.

The task will be scheduled for execution once the delay has expired. It will be run with the DEFAULT priority.

Parameters
delaywith which the operation should be run
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

The task will be scheduled for execution once the delay has expired. It will be run with the DEFAULT priority.

Parameters
delaywhen should this operation time out?
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

Definition at line 1240 of file scheduler.c.

1243 {
1246  task,
1247  task_cls);
1248 }
static struct GNUNET_TIME_Relative delay
When should dkg communication start?

References delay, GNUNET_SCHEDULER_add_delayed_with_priority(), and GNUNET_SCHEDULER_PRIORITY_DEFAULT.

Referenced by add_to_lru(), age_cover_counters(), announce_id(), announce_next_regex(), ats_reserve_callback(), attempt_connect_task(), barrier2_cb(), broadcast_hello(), calculate_pow(), callback_mq_error(), channel_new_cb(), channel_open_sent_cb(), check_disconnect(), check_proof_of_work(), check_timeouts(), check_zone_namestore_next(), churn(), cleanup_expired_records(), client_connect_cb(), client_receive(), client_send_cb(), client_session_timeout(), connect_check_run(), connect_fail_continuation(), connection_ready_cb(), consider_gathering(), consider_peer_destroy(), consider_sending_fc(), consider_ss_ack(), continue_store_activity(), create_macendpoint(), create_session(), cron_clean_data_hosts(), curl_download_prepare(), daemon_started(), delay_warning(), delayed_get(), dht_connected(), disconnect_and_schedule_reconnect(), disconnect_neighbour(), dns_pre_request_handler(), do_broadcast(), do_dht_put(), do_disconnect(), do_reconnect(), do_refresh(), do_rekey(), do_round(), do_scheduler_notify(), do_speedup(), error_handler(), expire_records_continuation(), find_string(), find_validation_entry(), finished_cb(), force_reconnect(), forward_overlay_connect(), GCC_handle_connection_create_ack(), GCCH_channel_incoming_new(), GCD_hello_update(), GCD_init(), GCT_remove_channel(), get_addresses(), get_cadet(), GNUNET_ATS_solver_generate_preferences_start(), GNUNET_ATS_solvers_experimentation_run(), GNUNET_CONNECTION_notify_transmit_ready(), GNUNET_FS_search_probe_progress_(), GNUNET_FS_TEST_download(), GNUNET_FS_TEST_publish(), GNUNET_HOSTLIST_client_start(), GNUNET_NAMESTORE_records_store2(), GNUNET_NAT_mini_map_start(), GNUNET_NAT_test_start(), GNUNET_NT_scanner_init(), GNUNET_PQ_event_listen(), GNUNET_RESOLVER_hostname_get(), GNUNET_RESOLVER_ip_get(), GNUNET_SERVER_inject(), GNUNET_STATISTICS_destroy(), GNUNET_TESTBED_is_host_habitable(), GNUNET_TESTBED_run(), GNUNET_TESTING_run(), GSC_KX_init(), GSF_cadet_query_cancel(), GST_ats_block_address(), GST_manipulation_send(), GST_neighbours_start(), GST_process_next_focc(), habitability_check(), handle_announce(), handle_autoconfig_request(), handle_barrier_init(), handle_client_listener_error(), handle_connection_create(), handle_core_connect(), handle_data(), handle_external_ip(), handle_fragment_box(), handle_link_controllers(), handle_manage_peer_service(), handle_monitor_next(), handle_mq_error(), handle_overlay_connect(), handle_p2p_migration_stop(), handle_p2p_reply(), handle_peer_create(), handle_peer_destroy(), handle_peer_get_config(), handle_peer_reconfigure(), handle_peer_start(), handle_peer_stop(), handle_remote_overlay_connect(), handle_request(), handle_stun(), handle_tcp_data(), handle_transport_notify_connect(), handler_advertisement(), hello_offered(), helper_read(), helper_write(), http_client_plugin_get_session(), http_client_plugin_update_inbound_delay(), http_server_plugin_update_inbound_delay(), ifc_broadcast(), incoming_channel(), init(), iter_finished(), kce_generate_cb(), kce_generate_rekey_cb(), keepalive_done(), lcf_proc_task(), learn_dv_path(), logging_task(), lookup_authz_cb(), macendpoint_timeout(), main_init(), maintain_connections_cb(), manage_first_hop_mq(), master_task(), monitor_unblock(), mq_error_handler(), netjail_exec_run(), next_rnd(), notify_send_done(), odc_warn_delay_task(), outbound_bw_tracker_update(), peer_id_cb(), peerstore_store_own_cb(), preference_aging(), probe_ping_task_cb(), process_external_ip(), process_job_queue(), process_local_reply(), process_map_output(), process_peer_iteration_cb(), process_peer_monitoring_cb(), process_queue(), process_requests(), profiler_cb(), queue_timeout(), read_from_log(), reannounce(), reannounce_regex(), reconnect(), reconnect_arm_later(), reconnect_arm_monitor_later(), reconnect_later(), reconnect_peer_ctx(), reconnect_plugin_ctx(), recursive_dns_resolution(), refresh_hello_task(), refresh_timeout_task(), reschedule_connect(), resolve_and_cache(), revalidate_address(), revive_migration(), run(), run_external_ip(), run_finish(), run_round(), run_scan(), sample_load_task(), scan(), schedule_current_round(), schedule_httpd(), schedule_missing_requests(), schedule_next_hello(), schedule_next_put(), schedule_next_task(), schedule_reconnect(), send_create_ack(), send_find_peer_message(), send_hello(), send_hello_beacon(), send_keep_alive(), send_keepalive(), send_key(), send_with_fragmentation(), server_access_cb(), server_lookup_connection(), server_session_timeout(), service_client_mst_cb(), session_timeout(), set_feedback_task(), set_pref_task(), set_prop_task(), setup_data_transfer(), setup_queue(), start_cb(), start_dv_learn(), start_helper(), start_local_query(), start_test(), start_typemap_task(), store_pi(), switch_to_speaker(), task_check(), task_download_dispatcher(), task_hostlist_saving(), tcp_plugin_get_session(), tcp_plugin_update_inbound_delay(), test_master(), test_run(), timeout_episode(), timeout_hello_validation(), tmain(), tmt_rdy_ping(), transmit_cummulative_ack_cb(), transmit_next(), transmit_query(), transmit_task_cb(), transmit_typemap_task(), try_again(), try_reconnect(), udp_ipv4_broadcast_send(), udp_ipv6_broadcast_send(), udp_plugin_create_session(), unix_plugin_get_session(), update_excess(), update_flood_times(), update_preference(), update_timeout(), userinfo_endpoint(), utilization_transmission(), warn_delay_task(), warn_monitor_slow(), warn_no_client_continue(), warn_no_receive_done(), work(), and zone_iteration_finished().

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◆ GNUNET_SCHEDULER_add_at()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_at ( struct GNUNET_TIME_Absolute  at,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run at the specified time.

The task will be scheduled for execution once specified time has been reached. It will be run with the DEFAULT priority.

Parameters
attime at which this operation should run
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

Definition at line 1217 of file scheduler.c.

1220 {
1223  task,
1224  task_cls);
1225 }
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_at_with_priority(struct GNUNET_TIME_Absolute at, enum GNUNET_SCHEDULER_Priority priority, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run at the specified time.
Definition: scheduler.c:1081

References GNUNET_SCHEDULER_add_at_with_priority(), and GNUNET_SCHEDULER_PRIORITY_DEFAULT.

Referenced by activate_core_visible_dv_path(), backtalker_monotime_store_cb(), backtalker_timeout_cb(), check_dht_local_put(), check_link_down(), check_proof_of_work(), connection_ready_cb(), core_init(), cummulative_ack(), data_sent_cb(), GCC_handle_duplicate_create(), GCCH_handle_channel_plaintext_data_ack(), GCT_add_channel(), GNUNET_FRAGMENT_context_transmission_done(), GST_manipulation_peer_disconnect(), handle_dv_box(), handle_validation_response(), insert_sorted(), manage_first_hop_mq(), path_cleanup_cb(), process_queue(), reassembly_cleanup_task(), schedule_peer_transmission(), send_delayed(), set_state_and_timeout(), timeout_cb(), try_transmission(), and update_next_challenge_time().

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◆ GNUNET_SCHEDULER_add_delayed_with_priority()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_delayed_with_priority ( struct GNUNET_TIME_Relative  delay,
enum GNUNET_SCHEDULER_Priority  priority,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run with a specified delay.

The task will be scheduled for execution once the delay has expired.

Parameters
delaywhen should this operation time out?
prioritypriority to use for the task
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

Definition at line 1170 of file scheduler.c.

1175 {
1178  priority,
1179  task,
1180  task_cls);
1181 }
struct GNUNET_TIME_Absolute GNUNET_TIME_relative_to_absolute(struct GNUNET_TIME_Relative rel)
Convert relative time to an absolute time in the future.
Definition: time.c:315

References delay, GNUNET_SCHEDULER_add_at_with_priority(), GNUNET_TIME_relative_to_absolute(), and GNUNET_SCHEDULER_Task::priority.

Referenced by cron_flush_respect(), cron_scan_directory_data_hosts(), delayed_disconnect_channel(), delayed_restart_task(), expired_processor(), find_proof(), GNUNET_SCHEDULER_add_delayed(), GNUNET_SCHEDULER_add_select(), GNUNET_SCHEDULER_add_with_priority(), idle_request_room_messages(), load_operation(), on_identity(), schedule_transmit_on_queue(), and start_operation().

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◆ GNUNET_SCHEDULER_add_at_with_priority()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_at_with_priority ( struct GNUNET_TIME_Absolute  at,
enum GNUNET_SCHEDULER_Priority  priority,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run at the specified time.

The task will be scheduled for execution at time at.

Parameters
attime when the operation should run
prioritypriority to use for the task
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

Definition at line 1081 of file scheduler.c.

1085 {
1086  struct GNUNET_SCHEDULER_Task *t;
1087  struct GNUNET_SCHEDULER_Task *pos;
1088  struct GNUNET_SCHEDULER_Task *prev;
1089  struct GNUNET_TIME_Relative left;
1090 
1091  /* scheduler must be running */
1092  GNUNET_assert (NULL != scheduler_driver);
1093  GNUNET_assert (NULL != task);
1094  t = GNUNET_new (struct GNUNET_SCHEDULER_Task);
1096  t->callback = task;
1097  t->callback_cls = task_cls;
1098  t->read_fd = -1;
1099  t->write_fd = -1;
1100 #if PROFILE_DELAYS
1101  t->start_time = GNUNET_TIME_absolute_get ();
1102 #endif
1103  t->timeout = at;
1104  t->priority = check_priority (priority);
1106  init_backtrace (t);
1107 
1109  if (0 == left.rel_value_us)
1110  {
1111  queue_ready_task (t);
1112  if (priority > work_priority)
1113  work_priority = priority;
1114  return t;
1115  }
1116 
1117  /* try tail first (optimization in case we are
1118  * appending to a long list of tasks with timeouts) */
1119  if ((NULL == pending_timeout_head) ||
1121  {
1124  t);
1125  }
1126  else
1127  {
1128  /* first move from heuristic start backwards to before start time */
1129  prev = pending_timeout_last;
1130  while ((NULL != prev) &&
1132  prev = prev->prev;
1133  /* now, move from heuristic start (or head of list) forward to insertion point */
1134  if (NULL == prev)
1135  pos = pending_timeout_head;
1136  else
1137  pos = prev->next;
1138  while ((NULL != pos) && (pos->timeout.abs_value_us <=
1140  {
1141  prev = pos;
1142  pos = pos->next;
1143  }
1146  prev,
1147  t);
1148  }
1149  /* finally, update heuristic insertion point to last insertion... */
1152  "Adding task %p\n",
1153  t);
1154  return t;
1155 }
#define GNUNET_CONTAINER_DLL_insert_after(head, tail, other, element)
Insert an element into a DLL after the given other element.
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_remaining(struct GNUNET_TIME_Absolute future)
Given a timestamp in the future, how much time remains until then?
Definition: time.c:404
struct GNUNET_SCHEDULER_Task * prev
This is a linked list.
Definition: scheduler.c:144
Time for relative time used by GNUnet, in microseconds.

References GNUNET_TIME_Absolute::abs_value_us, GNUNET_SCHEDULER_Task::callback, GNUNET_SCHEDULER_Task::callback_cls, check_priority(), current_lifeness, GNUNET_assert, GNUNET_async_scope_get(), GNUNET_CONTAINER_DLL_insert, GNUNET_CONTAINER_DLL_insert_after, GNUNET_ERROR_TYPE_DEBUG, GNUNET_new, GNUNET_TIME_absolute_get(), GNUNET_TIME_absolute_get_remaining(), init_backtrace(), GNUNET_SCHEDULER_Task::lifeness, LOG, GNUNET_SCHEDULER_Task::next, pending_timeout_head, pending_timeout_last, pending_timeout_tail, GNUNET_SCHEDULER_Task::prev, GNUNET_SCHEDULER_Task::priority, queue_ready_task(), GNUNET_SCHEDULER_Task::read_fd, GNUNET_TIME_Relative::rel_value_us, scheduler_driver, GNUNET_SCHEDULER_Task::scope, t, GNUNET_SCHEDULER_Task::timeout, work_priority, and GNUNET_SCHEDULER_Task::write_fd.

Referenced by GNUNET_SCHEDULER_add_at(), and GNUNET_SCHEDULER_add_delayed_with_priority().

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◆ GNUNET_SCHEDULER_add_read_net()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_read_net ( struct GNUNET_TIME_Relative  delay,
struct GNUNET_NETWORK_Handle rfd,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run with a specified delay or when the specified file descriptor is ready for reading.

The delay can be used as a timeout on the socket being ready. The task will be scheduled for execution once either the delay has expired or the socket operation is ready. It will be run with the DEFAULT priority. Only allowed to be called as long as the scheduler is running, that is one of the following conditions is met:

Parameters
delaywhen should this operation time out?
rfdread file-descriptor
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

Definition at line 1474 of file scheduler.c.

1478 {
1481  rfd, task, task_cls);
1482 }
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_read_net_with_priority(struct GNUNET_TIME_Relative delay, enum GNUNET_SCHEDULER_Priority priority, struct GNUNET_NETWORK_Handle *rfd, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified priority and to be run after the specified delay or wh...
Definition: scheduler.c:1508

References delay, GNUNET_SCHEDULER_add_read_net_with_priority(), and GNUNET_SCHEDULER_PRIORITY_DEFAULT.

Referenced by accept_client(), connect_success_continuation(), core_read_finished_cb(), create_listen_socket(), delayed_restart_task(), do_accept(), do_resume(), do_s5r_read(), do_scheduler_notify(), do_udp_read(), GNUNET_CONNECTION_receive(), GNUNET_NAT_AUTO_test_start(), GNUNET_NAT_test_start(), init_socket(), libgnunet_plugin_dhtu_ip_init(), listen_cb(), maint_child_death(), mq_init(), proto_read_kx(), queue_destroy(), queue_read(), queue_read_kx(), read_cb(), read_dns4(), read_dns6(), receive_complete_cb(), receive_ready(), resume_client_receive(), run(), schedule_select_v4(), schedule_select_v6(), scheduler_fd_cb(), select_read_cb(), service_client_recv(), sock_read(), start_client(), stun_read_task(), test_nat_punched(), test_stun(), unix_plugin_select_read(), and unix_transport_server_start().

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◆ GNUNET_SCHEDULER_add_read_net_with_priority()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_read_net_with_priority ( struct GNUNET_TIME_Relative  delay,
enum GNUNET_SCHEDULER_Priority  priority,
struct GNUNET_NETWORK_Handle rfd,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run with a specified priority and to be run after the specified delay or when the specified file descriptor is ready for reading.

The delay can be used as a timeout on the socket being ready. The task will be scheduled for execution once either the delay has expired or the socket operation is ready. It will be run with the DEFAULT priority. Only allowed to be called as long as the scheduler is running, that is one of the following conditions is met:

Parameters
delaywhen should this operation time out?
prioritypriority to use for the task
rfdread file-descriptor
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

Definition at line 1508 of file scheduler.c.

1514 {
1516  rfd,
1517  GNUNET_YES,
1518  GNUNET_NO,
1519  task, task_cls);
1520 }
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_net_with_priority(struct GNUNET_TIME_Relative delay, enum GNUNET_SCHEDULER_Priority priority, struct GNUNET_NETWORK_Handle *fd, int on_read, int on_write, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready.
Definition: scheduler.c:1582

References delay, GNUNET_NO, GNUNET_SCHEDULER_add_net_with_priority(), GNUNET_YES, and GNUNET_SCHEDULER_Task::priority.

Referenced by GNUNET_SCHEDULER_add_read_net(), and GNUNET_SERVER_resume().

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◆ GNUNET_SCHEDULER_add_write_net()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_write_net ( struct GNUNET_TIME_Relative  delay,
struct GNUNET_NETWORK_Handle wfd,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run with a specified delay or when the specified file descriptor is ready for writing.

The delay can be used as a timeout on the socket being ready. The task will be scheduled for execution once either the delay has expired or the socket operation is ready. It will be run with the priority of the calling task. Only allowed to be called as long as the scheduler is running, that is one of the following conditions is met:

Parameters
delaywhen should this operation time out?
wfdwrite file-descriptor
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

Definition at line 1545 of file scheduler.c.

1549 {
1552  wfd,
1554  task, task_cls);
1555 }

References delay, GNUNET_NO, GNUNET_SCHEDULER_add_net_with_priority(), GNUNET_SCHEDULER_PRIORITY_DEFAULT, and GNUNET_YES.

Referenced by connect_success_continuation(), do_s5r_read(), do_send(), do_write(), GNUNET_CONNECTION_notify_transmit_ready(), mq_init(), mq_send(), proto_read_kx(), queue_read_kx(), queue_write(), recv_message(), select_write_cb(), signal_socks_failure(), signal_socks_success(), transmit_ready(), try_connect_using_address(), try_handle_plaintext(), try_send_tcp(), unix_plugin_select_write(), and unix_plugin_send().

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◆ GNUNET_SCHEDULER_add_net_with_priority()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_net_with_priority ( struct GNUNET_TIME_Relative  delay,
enum GNUNET_SCHEDULER_Priority  priority,
struct GNUNET_NETWORK_Handle fd,
int  on_read,
int  on_write,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run with a specified delay or when the specified file descriptor is ready.

The delay can be used as a timeout on the socket being ready. The task will be scheduled for execution once either the delay has expired or the socket operation is ready. Only allowed to be called as long as the scheduler is running, that is one of the following conditions is met:

Parameters
delaywhen should this operation time out?
prioritypriority of the task
fdfile-descriptor
on_readwhether to poll the file-descriptor for readability
on_writewhether to poll the file-descriptor for writability
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until "task" is started!

Definition at line 1582 of file scheduler.c.

1589 {
1590  /* scheduler must be running */
1591  GNUNET_assert (NULL != scheduler_driver);
1592  GNUNET_assert (on_read || on_write);
1594  return add_without_sets (delay, priority,
1595  on_read ? fd : NULL,
1596  on_write ? fd : NULL,
1597  NULL,
1598  NULL,
1599  task, task_cls);
1600 }
int GNUNET_NETWORK_get_fd(const struct GNUNET_NETWORK_Handle *desc)
Return file descriptor for this network handle.
Definition: network.c:1000
static struct GNUNET_SCHEDULER_Task * add_without_sets(struct GNUNET_TIME_Relative delay, enum GNUNET_SCHEDULER_Priority priority, const struct GNUNET_NETWORK_Handle *read_nh, const struct GNUNET_NETWORK_Handle *write_nh, const struct GNUNET_DISK_FileHandle *read_fh, const struct GNUNET_DISK_FileHandle *write_fh, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when any of the specified file descriptor set...
Definition: scheduler.c:1402

References add_without_sets(), delay, GNUNET_assert, GNUNET_NETWORK_get_fd(), GNUNET_SCHEDULER_Task::priority, and scheduler_driver.

Referenced by GNUNET_SCHEDULER_add_read_net_with_priority(), and GNUNET_SCHEDULER_add_write_net().

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◆ GNUNET_SCHEDULER_add_read_file()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_read_file ( struct GNUNET_TIME_Relative  delay,
const struct GNUNET_DISK_FileHandle rfd,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run with a specified delay or when the specified file descriptor is ready for reading.

The delay can be used as a timeout on the socket being ready. The task will be scheduled for execution once either the delay has expired or the socket operation is ready. It will be run with the DEFAULT priority. Only allowed to be called as long as the scheduler is running, that is one of the following conditions is met:

Parameters
delaywhen should this operation time out?
rfdread file-descriptor
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

Definition at line 1624 of file scheduler.c.

1628 {
1631  rfd, GNUNET_YES, GNUNET_NO,
1632  task, task_cls);
1633 }
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_file_with_priority(struct GNUNET_TIME_Relative delay, enum GNUNET_SCHEDULER_Priority priority, const struct GNUNET_DISK_FileHandle *fd, int on_read, int on_write, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when the specified file descriptor is ready.
Definition: scheduler.c:1693

References delay, GNUNET_NO, GNUNET_SCHEDULER_add_file_with_priority(), GNUNET_SCHEDULER_PRIORITY_DEFAULT, and GNUNET_YES.

Referenced by child_death_task(), cmd_read(), GNUNET_ARM_request_service_start(), GNUNET_NAT_mini_get_external_ipv4_(), GNUNET_OS_command_run(), GNUNET_OS_install_parent_control_handler(), GNUNET_SCHEDULER_driver_init(), GNUNET_wait_child(), handle_command(), helper_read(), initiate_put_from_pipe_trigger(), maint_child_death(), nat_server_read(), parent_control_handler(), read_external_ipv4(), read_task(), restart_nat_server(), run(), shutdown_pipe_cb(), start_helper(), stdin_cb(), testing_main(), tokenizer_cb(), and work().

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◆ GNUNET_SCHEDULER_add_write_file()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_write_file ( struct GNUNET_TIME_Relative  delay,
const struct GNUNET_DISK_FileHandle wfd,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run with a specified delay or when the specified file descriptor is ready for writing.

The delay can be used as a timeout on the socket being ready. The task will be scheduled for execution once either the delay has expired or the socket operation is ready. It will be run with the DEFAULT priority. Only allowed to be called as long as the scheduler is running, that is one of the following conditions is met:

Parameters
delaywhen should this operation time out?
wfdwrite file-descriptor
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

Definition at line 1657 of file scheduler.c.

1661 {
1664  wfd, GNUNET_NO, GNUNET_YES,
1665  task, task_cls);
1666 }

References delay, GNUNET_NO, GNUNET_SCHEDULER_add_file_with_priority(), GNUNET_SCHEDULER_PRIORITY_DEFAULT, and GNUNET_YES.

Referenced by GNUNET_HELPER_send(), helper_write(), tokenizer_cb(), udp_ipv4_broadcast_send(), udp_ipv6_broadcast_send(), write_message(), and write_task().

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◆ GNUNET_SCHEDULER_add_file_with_priority()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_file_with_priority ( struct GNUNET_TIME_Relative  delay,
enum GNUNET_SCHEDULER_Priority  priority,
const struct GNUNET_DISK_FileHandle fd,
int  on_read,
int  on_write,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run with a specified delay or when the specified file descriptor is ready.

The delay can be used as a timeout on the socket being ready. The task will be scheduled for execution once either the delay has expired or the socket operation is ready. Only allowed to be called as long as the scheduler is running, that is one of the following conditions is met:

Parameters
delaywhen should this operation time out?
prioritypriority of the task
fdfile-descriptor
on_readwhether to poll the file-descriptor for readability
on_writewhether to poll the file-descriptor for writability
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

Definition at line 1693 of file scheduler.c.

1701 {
1702  /* scheduler must be running */
1703  GNUNET_assert (NULL != scheduler_driver);
1704  GNUNET_assert (on_read || on_write);
1705  GNUNET_assert (fd->fd >= 0);
1706  return add_without_sets (delay, priority,
1707  NULL,
1708  NULL,
1709  on_read ? fd : NULL,
1710  on_write ? fd : NULL,
1711  task, task_cls);
1712 }
int fd
File handle on Unix-like systems.

References add_without_sets(), delay, GNUNET_DISK_FileHandle::fd, GNUNET_assert, GNUNET_SCHEDULER_Task::priority, and scheduler_driver.

Referenced by GNUNET_SCHEDULER_add_read_file(), and GNUNET_SCHEDULER_add_write_file().

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◆ GNUNET_SCHEDULER_add_select()

struct GNUNET_SCHEDULER_Task* GNUNET_SCHEDULER_add_select ( enum GNUNET_SCHEDULER_Priority  prio,
struct GNUNET_TIME_Relative  delay,
const struct GNUNET_NETWORK_FDSet rs,
const struct GNUNET_NETWORK_FDSet ws,
GNUNET_SCHEDULER_TaskCallback  task,
void *  task_cls 
)

Schedule a new task to be run with a specified delay or when any of the specified file descriptor sets is ready.

The delay can be used as a timeout on the socket(s) being ready. The task will be scheduled for execution once either the delay has expired or any of the socket operations is ready. This is the most general function of the "add" family. Note that the "prerequisite_task" must be satisfied in addition to any of the other conditions. In other words, the task will be started when (prerequisite-run) && (delay-ready || any-rs-ready || any-ws-ready) ) Only allowed to be called as long as the scheduler is running, that is one of the following conditions is met:

Parameters
priohow important is this task?
delayhow long should we wait?
rsset of file descriptors we want to read (can be NULL)
wsset of file descriptors we want to write (can be NULL)
taskmain function of the task
task_clsclosure of task
Returns
unique task identifier for the job only valid until task is started!

here we consider the case that a GNUNET_NETWORK_FDSet might be empty although its maximum FD number (nsds) is greater than 0. We handle this case gracefully because some libraries such as libmicrohttpd only provide a hint what the maximum FD number in an FD set might be and not the exact FD number (see e.g. gnunet-rest-service.c)

Definition at line 1798 of file scheduler.c.

1804 {
1805  struct GNUNET_SCHEDULER_Task *t;
1806  const struct GNUNET_NETWORK_Handle **read_nhandles = NULL;
1807  const struct GNUNET_NETWORK_Handle **write_nhandles = NULL;
1808  const struct GNUNET_DISK_FileHandle **read_fhandles = NULL;
1809  const struct GNUNET_DISK_FileHandle **write_fhandles = NULL;
1810  unsigned int read_nhandles_len = 0;
1811  unsigned int write_nhandles_len = 0;
1812  unsigned int read_fhandles_len = 0;
1813  unsigned int write_fhandles_len = 0;
1814 
1815  /* scheduler must be running */
1816  GNUNET_assert (NULL != scheduler_driver);
1817  GNUNET_assert (NULL != task);
1818  int no_rs = (NULL == rs);
1819  int no_ws = (NULL == ws);
1820  int empty_rs = (NULL != rs) && (0 == rs->nsds);
1821  int empty_ws = (NULL != ws) && (0 == ws->nsds);
1822  int no_fds = (no_rs && no_ws) ||
1823  (empty_rs && empty_ws) ||
1824  (no_rs && empty_ws) ||
1825  (no_ws && empty_rs);
1826  if (! no_fds)
1827  {
1828  if (NULL != rs)
1829  {
1830  extract_handles (rs,
1831  &read_nhandles,
1832  &read_nhandles_len,
1833  &read_fhandles,
1834  &read_fhandles_len);
1835  }
1836  if (NULL != ws)
1837  {
1838  extract_handles (ws,
1839  &write_nhandles,
1840  &write_nhandles_len,
1841  &write_fhandles,
1842  &write_fhandles_len);
1843  }
1844  }int no_fds_extracted = (0 == read_nhandles_len) &&
1852  (0 == read_fhandles_len) &&
1853  (0 == write_nhandles_len) &&
1854  (0 == write_fhandles_len);
1855  if (no_fds || no_fds_extracted)
1857  prio,
1858  task,
1859  task_cls);
1860  t = GNUNET_new (struct GNUNET_SCHEDULER_Task);
1862  init_fd_info (t,
1863  read_nhandles,
1864  read_nhandles_len,
1865  write_nhandles,
1866  write_nhandles_len,
1867  read_fhandles,
1868  read_fhandles_len,
1869  write_fhandles,
1870  write_fhandles_len);
1871  t->callback = task;
1872  t->callback_cls = task_cls;
1874  /* free the arrays of pointers to network / file handles, the actual
1875  * handles will be freed in destroy_task */
1876  GNUNET_array_grow (read_nhandles, read_nhandles_len, 0);
1877  GNUNET_array_grow (write_nhandles, write_nhandles_len, 0);
1878  GNUNET_array_grow (read_fhandles, read_fhandles_len, 0);
1879  GNUNET_array_grow (write_fhandles, write_fhandles_len, 0);
1880 #if PROFILE_DELAYS
1881  t->start_time = GNUNET_TIME_absolute_get ();
1882 #endif
1884  t->priority =
1885  check_priority ((prio ==
1887  prio);
1890  pending_tail,
1891  t);
1894  t->priority);
1896  "Adding task %p\n",
1897  t);
1898  init_backtrace (t);
1899  return t;
1900 }
#define GNUNET_MAX(a, b)
#define GNUNET_array_grow(arr, size, tsize)
Grow a well-typed (!) array.
static void driver_add_multiple(struct GNUNET_SCHEDULER_Task *t)
calls the given function func on each FdInfo related to t.
Definition: scheduler.c:877
void init_fd_info(struct GNUNET_SCHEDULER_Task *t, const struct GNUNET_NETWORK_Handle *const *read_nh, unsigned int read_nh_len, const struct GNUNET_NETWORK_Handle *const *write_nh, unsigned int write_nh_len, const struct GNUNET_DISK_FileHandle *const *read_fh, unsigned int read_fh_len, const struct GNUNET_DISK_FileHandle *const *write_fh, unsigned int write_fh_len)
Definition: scheduler.c:759
void extract_handles(const struct GNUNET_NETWORK_FDSet *fdset, const struct GNUNET_NETWORK_Handle ***ntarget, unsigned int *extracted_nhandles, const struct GNUNET_DISK_FileHandle ***ftarget, unsigned int *extracted_fhandles)
Definition: scheduler.c:1716
int nsds
Maximum number of any socket descriptor in the set (plus one)
handle to a socket
Definition: network.c:53
int own_handles
Do we own the network and file handles referenced by the FdInfo structs in the fds array.
Definition: scheduler.c:178

References GNUNET_SCHEDULER_Task::callback, GNUNET_SCHEDULER_Task::callback_cls, check_priority(), current_lifeness, current_priority, delay, driver_add_multiple(), extract_handles(), GNUNET_array_grow, GNUNET_assert, GNUNET_async_scope_get(), GNUNET_CONTAINER_DLL_insert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_MAX, GNUNET_new, GNUNET_SCHEDULER_add_delayed_with_priority(), GNUNET_SCHEDULER_PRIORITY_KEEP, GNUNET_TIME_absolute_get(), GNUNET_TIME_relative_to_absolute(), GNUNET_YES, init_backtrace(), init_fd_info(), GNUNET_SCHEDULER_Task::lifeness, LOG, max_priority_added, GNUNET_NETWORK_FDSet::nsds, GNUNET_SCHEDULER_Task::own_handles, pending_head, pending_tail, GNUNET_SCHEDULER_Task::priority, scheduler_driver, GNUNET_SCHEDULER_Task::scope, t, and GNUNET_SCHEDULER_Task::timeout.

Referenced by client_schedule(), context_task(), curl_download_prepare(), download_prepare(), GNUNET_SERVER_resume(), listen_stdio(), prepare_daemon(), run_httpd(), schedule_httpd(), schedule_read(), and server_schedule().

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◆ GNUNET_SCHEDULER_set_select()

void GNUNET_SCHEDULER_set_select ( GNUNET_SCHEDULER_select  new_select,
void *  new_select_cls 
)

Sets the select function to use in the scheduler (scheduler_select).

Parameters
new_selectnew select function to use (NULL to reset to default)
new_select_clsclosure for new_select
new_selectnew select function to use
new_select_clsclosure for new_select
Returns
previously used select function, NULL for default

Definition at line 439 of file scheduler.c.

441 {
442  scheduler_select = new_select;
443  scheduler_select_cls = new_select_cls;
444 }
static GNUNET_SCHEDULER_select scheduler_select
Function to use as a select() in the scheduler.
Definition: scheduler.c:418
static void * scheduler_select_cls
Closure for scheduler_select.
Definition: scheduler.c:428

◆ GNUNET_SCHEDULER_begin_async_scope()

void GNUNET_SCHEDULER_begin_async_scope ( struct GNUNET_AsyncScopeId aid)

Change the async scope for the currently executing task and (transitively) for all tasks scheduled by the current task after calling this function.

Nested tasks can begin their own nested async scope.

Once the current task is finished, the async scope ID is reset to its previous value.

Must only be called from a running task.

Parameters
aidthe asynchronous scope id to enter

Definition at line 2528 of file scheduler.c.

2529 {
2530  struct GNUNET_AsyncScopeSave dummy_old_scope;
2531 
2532  GNUNET_assert (NULL != active_task);
2533  /* Since we're in a task, the context will be automatically
2534  restored by the scheduler. */
2535  GNUNET_async_scope_enter (aid, &dummy_old_scope);
2536 }

References active_task, GNUNET_assert, and GNUNET_async_scope_enter().

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