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gnunet_mpi_test.c File Reference
#include "platform.h"
#include "gnunet_util_lib.h"
#include <mpi.h>
Include dependency graph for gnunet_mpi_test.c:

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Macros

#define LOG(kind, ...)   GNUNET_log_from(kind, "gnunet-mpi-test", __VA_ARGS__)
 Generic logging shorthand. More...
 

Functions

int main (int argc, char *argv[])
 

Macro Definition Documentation

◆ LOG

#define LOG (   kind,
  ... 
)    GNUNET_log_from(kind, "gnunet-mpi-test", __VA_ARGS__)

Generic logging shorthand.

Definition at line 8 of file gnunet_mpi_test.c.

Referenced by main().

Function Documentation

◆ main()

int main ( int  argc,
char *  argv[] 
)

Definition at line 12 of file gnunet_mpi_test.c.

References argv2, filename, GNUNET_asprintf(), GNUNET_assert, GNUNET_break, GNUNET_DISK_fn_write(), GNUNET_DISK_PERM_GROUP_READ, GNUNET_DISK_PERM_GROUP_WRITE, GNUNET_DISK_PERM_USER_READ, GNUNET_DISK_PERM_USER_WRITE, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_malloc, GNUNET_NO, GNUNET_OK, GNUNET_OS_INHERIT_STD_ALL, GNUNET_OS_process_status(), GNUNET_OS_start_process_vap(), GNUNET_SYSERR, LOG, msg, pid, and ret.

13 {
14  char *msg;
15  char *filename;
16  char **argv2;
17  struct GNUNET_OS_Process *proc;
18  unsigned long code;
19  pid_t pid;
20  enum GNUNET_OS_ProcessStatusType proc_status;
21  int ntasks;
22  int rank;
23  int msg_size;
24  int ret;
25  unsigned int cnt;
26 
27  ret = GNUNET_SYSERR;
28  if (argc < 2)
29  {
30  printf("Need arguments: gnunet-mpi-test <cmd> <cmd_args>");
31  return 1;
32  }
33  if (MPI_SUCCESS != MPI_Init(&argc, &argv))
34  {
35  GNUNET_break(0);
36  return 1;
37  }
38  if (MPI_SUCCESS != MPI_Comm_size(MPI_COMM_WORLD, &ntasks))
39  {
40  GNUNET_break(0);
41  goto finalize;
42  }
43  if (MPI_SUCCESS != MPI_Comm_rank(MPI_COMM_WORLD, &rank))
44  {
45  GNUNET_break(0);
46  goto finalize;
47  }
48  pid = getpid();
49  (void)GNUNET_asprintf(&filename, "%d-%d.mpiout", (int)pid, rank);
50  msg_size = GNUNET_asprintf(&msg, "My rank is: %d\n", rank);
51  printf("%s", msg);
52  if (msg_size ==
53  GNUNET_DISK_fn_write(filename, msg, msg_size,
54  GNUNET_DISK_PERM_USER_READ |
55  GNUNET_DISK_PERM_GROUP_READ |
56  GNUNET_DISK_PERM_USER_WRITE |
57  GNUNET_DISK_PERM_GROUP_WRITE))
58  ret = GNUNET_OK;
59  GNUNET_free(filename);
60  GNUNET_free(msg);
61  if (GNUNET_OK != ret)
62  {
63  GNUNET_break(0);
64  goto finalize;
65  }
66 
67  ret = GNUNET_SYSERR;
68  argv2 = GNUNET_malloc(sizeof(char *) * (argc));
69  for (cnt = 1; cnt < argc; cnt++)
70  argv2[cnt - 1] = argv[cnt];
71  proc =
72  GNUNET_OS_start_process_vap(GNUNET_NO, GNUNET_OS_INHERIT_STD_ALL, NULL,
73  NULL, NULL, argv2[0], argv2);
74  if (NULL == proc)
75  {
76  printf("Cannot exec\n");
77  GNUNET_free(argv2);
78  goto finalize;
79  }
80  do
81  {
82  (void)sleep(1);
83  ret = GNUNET_OS_process_status(proc, &proc_status, &code);
84  }
85  while (GNUNET_NO == ret);
86  GNUNET_free(argv2);
87  GNUNET_assert(GNUNET_NO != ret);
88  if (GNUNET_OK == ret)
89  {
90  if (0 != code)
91  {
92  LOG(GNUNET_ERROR_TYPE_WARNING, "Child terminated abnormally\n");
93  ret = GNUNET_SYSERR;
94  GNUNET_break(0);
95  goto finalize;
96  }
97  }
98  else
99  GNUNET_break(0);
100 
101 finalize:
102  (void)MPI_Finalize();
103  if (GNUNET_OK == ret)
104  return 0;
105  printf("Something went wrong\n");
106  return 1;
107 }
msg
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
GNUNET_OS_process_status
int GNUNET_OS_process_status(struct GNUNET_OS_Process *proc, enum GNUNET_OS_ProcessStatusType *type, unsigned long *code)
Retrieve the status of a process, waiting on it if dead.
Definition: os_priority.c:963
GNUNET_assert
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
Definition: gnunet_common.h:820
GNUNET_OS_Process
Definition: os_priority.c:43
GNUNET_NO
#define GNUNET_NO
Definition: gnunet_common.h:78
GNUNET_OK
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
ret
static int ret
Final status code.
Definition: gnunet-arm.c:89
GNUNET_DISK_fn_write
ssize_t GNUNET_DISK_fn_write(const char *fn, const void *buffer, size_t n, enum GNUNET_DISK_AccessPermissions mode)
Write a buffer to a file.
Definition: disk.c:877
GNUNET_break
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
Definition: gnunet_common.h:879
GNUNET_asprintf
int GNUNET_asprintf(char **buf, const char *format,...)
Like asprintf, just portable.
Definition: common_allocation.c:451
GNUNET_OS_INHERIT_STD_ALL
Use this option to have all of the standard streams (stdin, stdout and stderror) be inherited...
Definition: gnunet_os_lib.h:102
GNUNET_DISK_PERM_GROUP_WRITE
Group can write.
Definition: gnunet_disk_lib.h:179
GNUNET_OS_ProcessStatusType
GNUNET_OS_ProcessStatusType
Process status types.
Definition: gnunet_os_lib.h:169
GNUNET_OS_start_process_vap
struct GNUNET_OS_Process * GNUNET_OS_start_process_vap(int pipe_control, enum GNUNET_OS_InheritStdioFlags std_inheritance, struct GNUNET_DISK_PipeHandle *pipe_stdin, struct GNUNET_DISK_PipeHandle *pipe_stdout, struct GNUNET_DISK_PipeHandle *pipe_stderr, const char *filename, char *const argv[])
Start a process.
Definition: os_priority.c:607
filename
static char * filename
Definition: gnunet-download.c:51
argv2
static char ** argv2
The arguments including the binary to spawn.
Definition: gnunet_testbed_mpi_spawn.c:31
GNUNET_SYSERR
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
GNUNET_DISK_PERM_USER_WRITE
Owner can write.
Definition: gnunet_disk_lib.h:164
GNUNET_DISK_PERM_USER_READ
Owner can read.
Definition: gnunet_disk_lib.h:159
GNUNET_ERROR_TYPE_WARNING
Definition: gnunet_common.h:367
GNUNET_DISK_PERM_GROUP_READ
Group can read.
Definition: gnunet_disk_lib.h:174
pid
static struct GNUNET_PeerIdentity pid
Identity of the peer we transmit to / connect to.
Definition: gnunet-transport-profiler.c:148
LOG
#define LOG(kind,...)
Generic logging shorthand.
Definition: gnunet_mpi_test.c:8
GNUNET_malloc
#define GNUNET_malloc(size)
Wrapper around malloc.
Definition: gnunet_common.h:1147
GNUNET_free
#define GNUNET_free(ptr)
Wrapper around free.
Definition: gnunet_common.h:1191
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