root/tags/1.1.0/xc_shm.c

#ifdef TEST
#include <limits.h>
#include <stdio.h>
#else
#include <php.h>
#endif

#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "xc_shm.h"

typedef struct {
    const char              *name;
    const xc_shm_handlers_t *handlers;
} xc_shm_scheme_t;
static xc_shm_scheme_t xc_shm_schemes[10];

void xc_shm_init_modules() /* {{{ */
{
    extern void xc_shm_mem_init();
    extern void xc_shm_malloc_register();
    extern void xc_shm_mmap_register();

    memset(xc_shm_schemes, 0, sizeof(xc_shm_schemes));
    xc_shm_mem_init();
    xc_shm_malloc_register();
    xc_shm_mmap_register();
}
/* }}} */
int xc_shm_scheme_register(const char *name, const xc_shm_handlers_t *handlers) /* {{{ */
{
    int i;
    for (i = 0; i < 10; i ++) {
        if (!xc_shm_schemes[i].name) {
            xc_shm_schemes[i].name = name;
            xc_shm_schemes[i].handlers = handlers;
            return 1;
        }
    }
    return 0;
}
/* }}} */
const xc_shm_handlers_t *xc_shm_scheme_find(const char *name) /* {{{ */
{
    int i;
    for (i = 0; i < 10 && xc_shm_schemes[i].name; i ++) {
        if (strcmp(xc_shm_schemes[i].name, name) == 0) {
            return xc_shm_schemes[i].handlers;
        }
    }
    return NULL;
}
/* }}} */
xc_shm_t *xc_shm_init(const char *type, xc_shmsize_t size, int readonly_protection, const void *arg1, const void *arg2) /* {{{ */
{
    const xc_shm_handlers_t *handlers = xc_shm_scheme_find(type);

    if (handlers) {
        xc_shm_t *shm = handlers->init(size, readonly_protection, arg1, arg2);
        if (shm) {
            shm->handlers = handlers;
        }
        return shm;
    }

    return NULL;
}
/* }}} */
void xc_shm_destroy(xc_shm_t *shm) /* {{{ */
{
    shm->handlers->destroy(shm);
}
/* }}} */