在这种情况下,对pthread_mutex_destroy子例程的调用是对健壮互斥的唯一允许操作。 函数pthread_mutex_trylock与pthread_mutex_lock相同,只是如果mutex参数所引用的健壮互斥对象被任何线程 (包括当前线程) 锁定,那么调用将立即返回。 pthread_mutex_unlock函数释放互斥对象所引用的互斥对象。 释放互斥对象的方式取...
与`pthread_mutex_lock`不同的是,`pthread_mutex_trylock`是非阻塞的,如果无法获取锁,它会立即返回而不是等待锁变为可用。 以下是`pthread_mutex_trylock`的基本用法: ```c #include <pthread.h> #include <stdio.h> //定义互斥锁 pthread_mutex_t myMutex = PTHREAD_MUTEX_INITIALIZER; void* myThread...
If pthread_mutex_trylock() is locked, it returns immediately. For recursive mutexes, pthread_mutex_trylock() will effectively add to the count of the number of times pthread_mutex_unlock() must be called by the thread to release the mutex. (That is, it has the same behavior as a ...
pthread_mutex_trylock 函数是 POSIX 线程(pthread)库中用于尝试获取互斥锁的函数。关于 pthread_mutex_trylock 的返回值,以下是详细的解答: 一、返回值概述pthread_mutex_trylock 函数在成功获取互斥锁时返回 0,表示操作成功。如果无法获取互斥锁(例如,因为互斥锁已被其他线程锁定),则函数会返回一个非零的错误代码,...
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int pthread_mutex_trylock(pthread_mutex_t *mutex); #include <pthread.h> pthread_mutex_t mutex; int ret; ret = pthread_mutex_trylock(&mutex); /* try to lock the mutex */pthread_mutex_trylock() is a nonblocking version of pthread_mutex_lock(). If the mutex object referenced by mutex ...
pthread_mutex_trylock(3T) は、mutex が指す mutex のロックを試みます。(Solaris スレッドについては、「mutex_trylock(3T)」を参照)。プロトタイプ: int pthread_mutex_trylock(pthread_mutex_t *mutex); #include <pthread.h> pthread_mutex_t mutex; int ret; ret = pthread_mutex_trylock(&...
$ cat atest.zig const std = @import("std"); pub fn main() void { var mtx = std.Thread.Mutex {}; _ = mtx.tryAcquire(); } $ zig build-exe --libc <(zig libc) -lc -lpthread ./atest.zig ld.lld: error: undefined symbol: pthread_mutex_trylock >...
If pthread_mutex_trylock() is locked, it returns immediately. For recursive mutexes, pthread_mutex_trylock() will effectively add to the count of the number of times pthread_mutex_unlock() must be called by the thread to release the mutex. (That is, it has the same behavior as a ...