myvtm/Framework/libtoolkit/shm_mem.h

#ifndef __SHM_MEM_H__
#define __SHM_MEM_H__

#pragma once

#include "config.h"

#ifdef __cplusplus
extern "C" {
#endif

#include <stdarg.h>

#define SHM_MEM_SIZE	16 /* MB */
#ifndef INVALID_MAP
#define INVALID_MAP ((void *)-1)
#endif // !INVALID_MAP


/* allocates the memory (mmap or sysv shmap) */
TOOLKIT_API void* osips_shm_getmem(int, void*, unsigned long);   
/* deallocates the memory allocated by shm_getmem() */
TOOLKIT_API void osips_shm_relmem(void*, unsigned long);
TOOLKIT_API void osips_shm_mem_destroy();
TOOLKIT_API int shm_getmem_addr(void** hint);

TOOLKIT_API int shm_getmem(int key, void** hint, int);
TOOLKIT_API void* shm_mem_init(void* hint, int newcreate);
TOOLKIT_API int shm_mem_init2(int key, void *hint, int newcreate);
TOOLKIT_API void shm_mem_destroy();
TOOLKIT_API void shm_mem_destroy2(int newcreate);

TOOLKIT_API char *shm_strdup(const char *str);
TOOLKIT_API char *shm_strdup_printf(const char *format, ...);
TOOLKIT_API char *shm_strdup_vprintf(const char *format, va_list args);

TOOLKIT_API void shm_lock();
TOOLKIT_API void shm_unlock();

// 
TOOLKIT_API void shm_set_user_data(int idx, void *user_data);
TOOLKIT_API void *shm_get_user_data(int idx);

TOOLKIT_API void *shm_malloc_unsafe(unsigned int size);

TOOLKIT_API void* shm_malloc(unsigned int size);


TOOLKIT_API void shm_free_unsafe(void *_p);


#define shm_free(_p) \
	do { \
	shm_lock(); \
	shm_free_unsafe( _p ); \
	shm_unlock(); \
	}while(0)


#ifdef __cplusplus
} // extern "C" {
#endif

#endif //__SHM_MEM_H__