使用RAII实现windows版的lock_guard<> 1classCWinLock {2public:3CWinLock(CRITICAL_SECTION *pCritmp)4{5my_winsec =pCritmp;6EnterCriticalSection(my_winsec);7}8~CWinLock()9{10LeaveCriticalSection(my_winsec)11};12private:13CRITICAL_SECTION *my_winsec;14}; std::recursive_mutex嵌套锁/递归锁 std...
防止忘记leave 而导致死锁,类似于std::lock_guard<std::mutex>// 也叫做RAII类Resource Acquisition is initialization 资源获取即初始化,容器,智能指针都属于RAIIclassCWinLock{public:C
1#include <thread>2#include <iostream>3#include <mutex>4#include <chrono>56classTry_Recursive_Mutex7{8std::mutex mtx;9std::recursive_mutex recur_mtx;10std::chrono::milliseconds sleep_time = std::chrono::milliseconds(1000);11public:12Try_Recursive_Mutex();1314voidfun1(){15std::lock_guar...
#include <iostream>#include <mutex>#include <thread>classX{std::recursive_mutexm;std::stringshared;public:voidfun1(){std::lock_guard<std::recursive_mutex>lk(m);shared="fun1";std::cout<<"fun1 中,共享变量现在为 "<<shared<<'\n';}voidfun2(){std::lock_guard<std::recursive_mutex>lk...
错误发生时抛出 std::system_error,包括妨碍 lock 满足其规定的源自底层操作系统的错误。在抛出任何异常的情况下,不锁定互斥体。 注解通常不直接调用 lock():用 std::unique_lock 与std::lock_guard 管理排他性锁定。 示例此示例演示 lock 与unlock 能如何用于保护共享数据。 运行此代码 #include <chrono> #...
()){std::cout<<"lock acquired\n";test.unlock();}elsestd::cout<<"lock not acquired\n";test.lock();// non-recursive mutex would return false from try_lock nowif(test.try_lock()){std::cout<<"lock acquired\n";test.unlock();}elsestd::cout<<"lock not acquired\n";test.unlock()...
opencv\build\include/opencv2/core/utility.hpp:698:29:error:'Mutex'isnota member of'cv'typedefstd::lock_guard<cv::Mutex>AutoLock;^~~~C:\MinGW\lib\opencv\build\include/opencv2/core/utility.hpp:698:29:note:suggested alternative:'Matx'typedefstd::lock_guard<cv::Mutex>AutoLock;^~~~Matx C...
std::recursive_timed_mutex::try_lock_for From cppreference.com <cpp |thread |recursive timed mutex Concurrency support library template<classRep,classPeriod> booltry_lock_for(conststd::chrono::duration<Rep, Period>&timeout_duration); ...
#include <iostream> #include <mutex> #include <thread> std::recursive_mutex mtx; void safe_function() { std::lock_guard<std::recursive_mutex> lock(mtx); // 这里是临界区代码 std::cout << "Thread ID: " << std::this_thread::get_id() ...
#include<thread>#include<iostream>#include<chrono>#include<mutex>std::recursive_timed_mutex test_mutex;voidf(){auto now=std::chrono::steady_clock::now();test_mutex.try_lock_until(now+std::chrono::seconds(10));std::cout<<"hello world\n";}intmain(){std::lock_guard<std::recursive_time...