PJLIB库基础框架-初始化与缓冲池和内存池的使用

#include <stdio.h>
#include <pjlib.h>
#include <pj/types.h> // 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;
}