---

qShm.c File Reference

Shared Memory Handling API. More...

Functions
int	qShmInit (const char *keyfile, int keyid, size_t size, bool autodestroy)
	Under-development.
int	qShmGetId (const char *keyfile, int keyid)
	Under-development.
void *	qShmGet (int shmid)
	Under-development.
bool	qShmFree (int shmid)
	Under-development.

---

Detailed Description

Shared Memory Handling API.

Note:

   [your header file]
   struct SharedData {
     (... structrue definitions ...)
   }

   [shared memory creater]
   // create shared memory
   int shmid = qShmInit("/some/file/for/generating/unique/key", 's', sizeof(struct SharedData), true);
   if(shmid < 0) {
     printf("ERROR: Can't initialize shared memory.\n");
     return -1;
   }

   // get shared memory pointer
   struct SharedData *sdata = (SharedData *)qShmGet(shmid);
   if(sdata == NULL) {
     printf("ERROR: Can't get shared memory.\n");
     return -1;
   }

   [shared memory user]
   // get shared memory id
   int shmid = qShmGetId("/some/file/for/generating/unique/key", 's');
   if(shmid < 0) {
     printf("ERROR: Can't get shared memory id.\n");
     return -1;
   }

   // get shared memory pointer
   struct SharedData *sdata = (SharedData *)qShmGet(shmid);
   if(sdata == NULL) {
     printf("ERROR: Can't get shared memory.\n");
     return -1;
   }

---

Function Documentation

int qShmInit	(	const char *	keyfile,
		int	keyid,
		size_t	size,
		bool	autodestroy
	)

Under-development.

Since:

not released yet

int qShmGetId	(	const char *	keyfile,
		int	keyid
	)

Under-development.

Since:

not released yet

void* qShmGet

(

int

shmid

)

Under-development.

Since:

not released yet

bool qShmFree

(

int

shmid

)

Under-development.

Since:

not released yet

---

[Home] [About] [Examples] [Changes] [Download] [SVN Repository] [Install] [Reference]