PJLIB库基础框架-初始化与缓冲池和内存池的使用

原文地址：http://blog.csdn.net/sunlion81/article/details/8818462

#include
#include
#include  // for pj_init.

#define THIS_FILE "main.c"

int main(int argc, char** argv)
{
    pj_status_t status;
    pj_caching_pool ch_pool;

    // pjlib库初始化
    status = pj_init();
    if (status != PJ_SUCCESS)
    {
        char errmsg[PJ_ERR_MSG_SIZE];
        pj_strerror(status, errmsg, sizeof(errmsg));
        PJ_LOG(1,(THIS_FILE, "%s: %s [status=%d]", pj_init, errmsg, status));
        return -1;
    }

    // pjlib创建缓冲池工厂
    pj_caching_pool_init(&ch_pool, NULL, 1024*1024);

    /* 分配内存示例 */
    {
        pj_pool_t *pool;
        pj_pool_factory *factory =&ch_pool.factory;

        // 在分配内存前必须创建内存池
        pool = pj_pool_create(factory, "pjlib_demo", 4*1024, 4*1024, NULL);
        if (pool == NULL)
        {
            PJ_LOG(1,(THIS_FILE, "Error:pj_pool_create is NULL."));
            return PJ_ENOMEM;
        }

        // 循环申请内存
        {
            int i;
            for (i=0; i<1000; i++)
            {
                void* p;
                p = pj_pool_alloc(pool, (pj_rand()+1) % 512);
            }

            // 没有释放内存的函数！！！
        }

        // 释放内存池
        pj_pool_release(pool);
    }

    // pjlib销毁缓冲池工厂
    pj_caching_pool_destroy(&ch_pool);

    // pjlib库关闭
    pj_shutdown();

    return 0;
}