glib 线程池 thread_pool

#include <stdio.h>#include <glib.h>#include <string.h>/** 全局锁*/GMutex g_lock;#define MAX_THREAD_NUM 10/** * @brief 线程池回调函数，线程执行的主体函数 */void show_result(gpointer str, gpointer data){  g_mutex_lock(&g_lock);  printf("The result is : %s\n", (char*)str);  g_mutex_unlock(&g_lock);  if(1)  {      g_printf("thread[%lu] is running...\n",pthread_self());      sleep(10);  }}int main(){  char *str = "thread_pool example";  int count = 0;  int g_thread_num = 0;  GThreadPool *thread_pool; /**   * 初始化互斥锁，NULL表示使用默认的快速互斥锁。   */  g_mutex_init(&g_lock);  thread_pool = g_thread_pool_new(show_result, NULL, MAX_THREAD_NUM, TRUE, NULL);  if (thread_pool == NULL)  {    printf("g_thread_pool_new failed!\n");    return -1;  }  /**   * 调用20次线程池   * 实际线程池中最多有10个线程同时运行   */  for (count; count < 20; count++)  {    g_thread_pool_push(thread_pool, (gpointer)str, NULL);  }  g_thread_num =  g_thread_pool_get_max_threads(thread_pool);  printf("Max number in the pthread pool: %d\n", g_thread_num);  g_thread_pool_free(thread_pool, 0, 1);  return;}