std::unique_lock Defined in header<mutex> template<classMutex> classunique_lock; (since C++11) The classunique_lockis a general-purpose mutex ownership wrapper allowing deferred locking, time-constrained attempt
unique_lock::unlock Modifiers unique_lock::swap unique_lock::release Observers unique_lock::mutex unique_lock::owns_lock unique_lock::operator bool Non-member functions swap(std::unique_lock) mutex_type*mutex()constnoexcept; (since C++11) ...
lock(); ++counter; std::cout << id << ", final counter: " << counter << '\n'; }; for (int i = 0; i < 10; ++i) threads.emplace_back(worker_task, i); for (auto &thread : threads) thread.join(); } 可能的输出: 0, initial counter: 1 1, initial counter: 2 2, ...
voidlock(); (since C++11) Parameters (none) Return value (none) Exceptions If there is no associated mutex,std::system_errorwith an error code ofstd::errc::operation_not_permitted. If the mutex is already locked by thisunique_lock(in other words,owns_lock()istrue),std::system_errorwith...
std::lock_guard<std::timed_mutex> make_lock() { return std::lock_guard<std::timed_mutex>(g_my_mutex); //绝不能分行写 } void workOnResource1() { for (int i = 0; i < 10000; ++i) { auto lk = make_lock(); ++gi;
unique_lock<T>能够在需要是lock,用完后unlock,当生命周期结束时若此时互斥量没有解锁,也会像lock_guard<T>一样析构解锁。也就是说类unique_lock<T>是类lock_guard<T>的一个超集。unique_lock<T>相比lock_guard<T>更加灵活,但是效率差一些,因为占用更多的内存。以下是cppreference.com对unique_lock<T>的...
std::unique_lock - cppreference.com 类unique_lock 是通用互斥包装器,允许延迟锁定、锁定的有时限尝试、递归锁定、所有权转移和与条件变量一同使用。 C++11多线程 unique_lock详解 std::unique_lock 3.2.6 可以通过std::defer_lock保留互斥元未锁定(也可以一开始就锁定) 在std::unique_lock类中通过owns_lock...
deadlock-avoiding RAII wrapper for multiple mutexes (class template) 代码语言:txt 复制 © cppreference.com 在CreativeCommonsAttribution下授权-ShareAlike未移植许可v3.0。 http://en.cppreference.com/w/cpp/线程/UNIQUE[医]锁 本文档系腾讯云开发者社区成员共同维护,如有问题请联系cloudcommunity@tencent.com...
try_lock tries to lock the associated mutex, returns if the mutex is not available (public member function) unlock unlocks the associated mutex (public member function) 代码语言:txt 复制 © cppreference.com 在CreativeCommonsAttribution下授权-ShareAlike未移植许可v3.0。
std::unique_lock<std::timed_mutex>lk(g_my_mutex, std::defer_lock); std::unique_lock<std::timed_mutex>lk2(std::move(lk)); lk2.lock(); scoped_lock是C++17新引进的,在处理多个互斥量时,特别简单: 参考:http://en.cppreference.com/w/cpp/thread/scoped_lock...