struct timespec time_out; clock_gettime(CLOCK_REALTIME, &time_out); time_out.tv_sec += seconds; //time_out.tv_nsec += mills*1000*1000; pthread_mutex_timedlock(pMutex, &time_out); 1. 2. 3. 4. 5. 注意: 多次释放是否会有问题? 这个局部变量要声明位置,避免在lock期间释放 也可以考虑p...
初始化之后,我们接着看看pthread_mutex_lock操作: 1#ifndef __pthread_mutex_lock2strong_alias (__pthread_mutex_lock, pthread_mutex_lock)3hidden_def (__pthread_mutex_lock)4#endif56int7__pthread_mutex_lock (pthread_mutex_t *mutex)8{9assert (sizeof(mutex->__size) >=sizeof(mutex->__data)...
先用pthread_mutex_lock进入锁,再用pthread_mutex_timedlock进入锁,结果发现第二次超时并没有其效果。 代码模拟如下: 1#include <string.h>2#include <pthread.h>3#include <stdio.h>4#include 5uint64_t CTime::getCurrentMilliSecond()6{7structtimespec tp;8if(clock_gettime(CLOCK_MONOTONIC, &tp) ==0...
所以,可以考虑使用超时加锁办法: struct timespec time_out;clock_gettime(CLOCK_REALTIME, &time_out);time_out.tv_sec += seconds;//time_out.tv_nsec += mills*1000*1000;pthread_mutex_timedlock(pMutex, &time_out); 注意: 多次释放是否会有问题? 这个局部变量要声明位置,避免在lock期间释放 也可以考...
pthread_mutex_init(mutex,NULL); /*do something*/ pthread_mutex_destroy(mutex); free(mutex); 1. 2. 3. 4. 5. 6. 7. 四、互斥量的加锁与解锁 #include <pthread.h> int pthread_mutex_lock(pthread_mutex_t *mutex); int pthread_mutex_trylock(pthread_mutex_t *mutex); ...
pthread_mutex_timedlock ()函数锁定互斥对象引用的互斥对象。 如果互斥对象已锁定,那么调用线程将阻塞,直到互斥对象变为可用为止,如pthread_mutex_lock ()函数中所示。 如果在不等待另一个线程解锁互斥对象的情况下无法锁定互斥对象,那么此等待将在指定超时到期时终止。
The mutex object referenced by mutex is locked by calling pthread_mutex_lock() . If the mutex is already locked, the calling thread blocks until the mutex becomes...
Thepthread_mutex_timedlock()function locks the mutex object referenced by mutex. If the mutex is already locked, the calling thread blocks until the mutex becomes available, as in thepthread_mutex_lock()function. If the mutex cannot be locked without waiting for another thread to unlock the mut...
pthread_mutex_init (pthread_mutex_t *__restrict m, const pthread_mutexattr_t *__restrict a) int Initializes a mutex. pthread_mutex_lock (pthread_mutex_t *m) int Locks a mutex. pthread_mutex_unlock (pthread_mutex_t *m) int Unlocks a mutex. pthread_mutex_trylock (pthread_mute...
实现独占锁的类是std::unique_lock。std::shared_mutex的内部逻辑分析：引用计数：std::shared_mutex...