一、背景介绍： 函数指针始终不太灵活，它只能指向全局或静态函数，对于类成员函数、lambda表达式或其他可...
These functions atomically releasemutexand cause the calling thread to block on the condition variablecond; atomically here means "atomically with respect to access by another thread to the mutex and then the condition variable". That is, if another thread is able to acquire the mutex after the ...
int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime); int pthread_cond_destroy(pthread_cond_t *cond); 返回0为成功,非0为失败。 注意:pthread_cond_init,pthread_cond_signal,pthread_cond_broadcast,pthread_cond_wait只返回0,不会返回其他错误码。...
*/pthread_cond_signal(&count_threshold_cv);}printf("inc_count(): 线程 %ld, count = %d \n",(long)t,count);pthread_mutex_unlock(&count_mutex);/* 稍微等待一会儿 */sleep(1);}pthread_exit(NULL);}void*watch_count(void*t){printf("启动 watch_count(): 线程 %ld\n",(long)t);pthread_...
#define _UNIX03_THREADS #include <pthread.h> int pthread_cond_wait(pthread_cond_t * __restrict__cond, pthread_mutex_t * __restrict__mutex); General description Blocks on a condition variable. It must be called withmutexlocked by the calling thread, or undefined behavior will result. A ...
#define _UNIX03_THREADS #include <pthread.h> int pthread_cond_wait(pthread_cond_t * __restrict__cond, pthread_mutex_t * __restrict__mutex); General description Blocks on a condition variable. It must be called withmutexlocked by the calling thread, or undefined behavior will result. A ...
cond:条件变量pthread_mutex_t*restrict mutex:互斥锁(注意是指针) 触发 intpthread_cond_signal(pthread_cond_tcond);pthread_cond_tcond:条件变量(注意不是指针) 注意一定要在改变条件状态以后再给线程发信号。 3.3、编程实践: 3.4、运行结果 如不懂其余步骤,请参考有关于线程我的其余两篇 ...
1.2 pthread_attr_t 线程属性。 主要包括scope属性、detach属性、堆栈地址、堆栈大小、优先级等。 1.3 pthread_barrier_t 同步屏障数据类型 1.4 pthread_mutex_t mutex数据类型 1.5 pthread_cond_t 条件变量数据类型 二、 Pthreads的函数及使用 在使用函数前需导入头文件 ...
1. 首先pthread_cond_wait 的定义是这样的 The pthread_cond_wait()andpthread_cond_timedwait()functions are used to block on a condition variable. They are called withmutexlocked by the calling thread or undefined behaviour will result. These functions atomically releasemutexand cause the calling thre...
pthread_mutex_t:mutex数据类型 pthread_cond_t:条件变量数据类型 第3章 接口函数 3.1 线程控制函数(简介起见,省略参数): pthread_create():创建一个线程 pthread_exit():终止当前线程 pthread_cancel():请求中断另外一个线程的运行。被请求中断的线程会继续运行,直至到达某个取消点...