lock()。2) 获得互斥体 m 的所有权而不试图锁定它。若当前线程不在 m 上保有非共享锁(即由 lock、try_lock、try_lock_for 或try_lock_until 取得的锁)则行为未定义。3) 复制构造函数被弃置。若m 先于lock_guard 对象被销毁,则行为未定义。 参数m - 要获得所有权的共享互斥体 t - 用于选择构造
std::lock_guard Member functions lock_guard::lock_guard lock_guard::~lock_guard~lock_guard(); (since C++11) Releases the ownership of the owned mutex. Effectively calls m.unlock() where m is the mutex passed to the lock_guard's constructor. ...
{++rage;// 在锁外修改 OK;这是线程局部变量std::lock_guard<std::mutex>lock(cout_mutex);std::cout<<thread_name<<" 的愤怒计数:"<<rage<<'\n';}intmain(){std::threada(increase_rage,"a"), b(increase_rage,"b");{std::lock_guard<std::mutex>lock(cout_mutex);std::cout<<"main 的...
lock to acquire two locks without worrying about// other calls to assign_lunch_partner deadlocking us{std::lock(e1.m, e2.m);std::lock_guard<std::mutex>lk1(e1.m,std::adopt_lock);std::lock_guard<std::mutex>lk2(e2.m,std::adopt_lock);// Equivalent code (if unique_locks are ...
(C++11 起)中断语句Several variationsC++ 函数参数和返回重载内置函数Lambda 表达式C++多线程多线程介绍线程的创建线程的销毁this_thread锁锁的基本操作更简单的锁 —— std::lock_guard<Mutex>unique_lock<Mutex>std::adopt_lockstd::try_to_lockstd::defer_lockstd::unique_lock<Mutex>::releasestd::call_once...
#include <mutex> std::mutex mtx; void threadFunction() { std::lock_guard<std::mutex> lock(mtx); std::cout << "Thread safe output." << std::endl; } int main() { std::thread t1(threadFunction); std::thread t2(threadFunction); t1.join(); t2.join(); return 0; } 使用...
lock(); std::lock_guard<mutex> lock(m, std::adopt_lock); unique_lock<Mutex> 构造上锁,析构解锁 std::mutex m; std::unique_lock<mutex> lock(m); std::adopt_lock 只需解锁,无需上锁 // 手动上锁 m.lock(); std::unique_lock<mutex> lock(m, std::adopt_lock); std::try_to_...
额外参数:std::adopt_lock:只需解锁,无需上锁 // 手动上锁 m.lock(); std::lock_guard<mutex> lock(m, std::adopt_lock); unique_lock<Mutex> 构造上锁,析构解锁 std::mutex m; std::unique_lock<mutex> lock(m); std::adopt_lock 只需解锁,无需上锁 // 手动上锁 m.lock(); std::unique...
Véase también lock_guard (C++11) Implementa un envoltorio de propiedad demutexestrictamente basado en un ámbito. (plantilla de clase) scoped_lock (C++17) EnvoltorioRAIIque evita bloqueo mutuo para múltiplesmutex. (plantilla de clase)...
std::mutex m; std::lock_guard<std::mutex> lock(m); 额外参数:std::adopt_lock:只需解锁,无需上锁 // 手动上锁 m.lock(); std::lock_guard<mutex> lock(m, std::adopt_lock); unique_lock<Mutex> 构造上锁,析构解锁 std::mutex m; std::unique_lock<mutex> lock(m); std::adopt_lock 只...