类lock_guard是互斥体包装器,为在作用域块期间占有互斥体提供便利的RAII 风格机制。 当创建lock_guard对象时,它尝试接收给定互斥体的所有权。当控制离开创建lock_guard对象的作用域时,销毁lock_guard并释放互斥体。 lock_guard类不可复制。 模板形参 Mutex-要锁定的互斥体。类型必须满足可基本锁定(BasicLockable)要求...
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 ...
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_...
#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...
#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std...
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_...
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)...
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...