datacache API implementation More...

#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_datacache_lib.h"
#include "gnunet_statistics_service.h"
#include "gnunet_datacache_plugin.h"

Include dependency graph for datacache.c:

Data Structures
struct	GNUNET_DATACACHE_Handle
	Internal state of the datacache library. More...

Macros
#define	LOG(kind, ...) GNUNET_log_from (kind, "datacache", __VA_ARGS__)

#define	LOG_STRERROR_FILE(kind, op, fn) GNUNET_log_from_strerror_file (kind, "datacache", op, fn)

Functions
static void	env_delete_notify (void cls, const struct GNUNET_HashCode key, size_t size)
	Function called by plugins to notify the datacache about content deletions. More...

struct GNUNET_DATACACHE_Handle *	GNUNET_DATACACHE_create (const struct GNUNET_CONFIGURATION_Handle cfg, const char section)
	Create a data cache. More...

void	GNUNET_DATACACHE_destroy (struct GNUNET_DATACACHE_Handle *h)
	Destroy a data cache (and free associated resources). More...

enum GNUNET_GenericReturnValue	GNUNET_DATACACHE_put (struct GNUNET_DATACACHE_Handle h, uint32_t xor_distance, const struct GNUNET_DATACACHE_Block block)
	Store an item in the datacache. More...

unsigned int	GNUNET_DATACACHE_get (struct GNUNET_DATACACHE_Handle h, const struct GNUNET_HashCode key, enum GNUNET_BLOCK_Type type, GNUNET_DATACACHE_Iterator iter, void *iter_cls)
	Iterate over the results for a particular key in the datacache. More...

unsigned int	GNUNET_DATACACHE_get_closest (struct GNUNET_DATACACHE_Handle h, const struct GNUNET_HashCode key, enum GNUNET_BLOCK_Type type, unsigned int num_results, GNUNET_DATACACHE_Iterator iter, void *iter_cls)
	Iterate over the results that are "close" to a particular key in the datacache. More...

Detailed Description

datacache API implementation

Author: Christian Grothoff

Definition in file datacache.c.

Macro Definition Documentation

◆ LOG

#define LOG	(	kind,
		...
	)	GNUNET_log_from (kind, "datacache", __VA_ARGS__)

Definition at line 32 of file datacache.c.

◆ LOG_STRERROR_FILE

#define LOG_STRERROR_FILE	(	kind,
		op,
		fn
	)	GNUNET_log_from_strerror_file (kind, "datacache", op, fn)

Definition at line 34 of file datacache.c.

Function Documentation

◆ env_delete_notify()

static void env_delete_notify	(	void *	cls,
		const struct GNUNET_HashCode *	key,
		size_t	size
	)

static

Function called by plugins to notify the datacache about content deletions.

Parameters

cls	closure
key	key of the content that was deleted
size	number of bytes that were made available

Definition at line 104 of file datacache.c.

{
  struct GNUNET_DATACACHE_Handle *h = cls;
 
  LOG (GNUNET_ERROR_TYPE_DEBUG,
       "Content under key `%s' discarded\n",
       GNUNET_h2s (key));
  GNUNET_assert (h->utilization >= size);
  h->utilization -= size;
  GNUNET_CONTAINER_bloomfilter_remove (h->filter, key);
  GNUNET_STATISTICS_update (h->stats,
                            "# bytes stored",
                            -(long long) size,
                            GNUNET_NO);
  GNUNET_STATISTICS_update (h->stats,
                            "# items stored",
                            -1,
                            GNUNET_NO);
}

References GNUNET_assert, GNUNET_CONTAINER_bloomfilter_remove(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_h2s(), GNUNET_NO, GNUNET_STATISTICS_update(), h, key, LOG, and size.

Referenced by GNUNET_DATACACHE_create().

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Data Structures