std::unique_lock 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。 unique_lock比lock_guard使用更加灵活,功能更加强大。 使用unique_lock需要付出更多的时间、性能成本。 下面是try_lock的使用例子。 #include <iostream> //
lock_guard (C++11) 实现严格基于作用域的互斥体所有权包装器 (类模板) scoped_lock (C++17) 用于多个互斥体的免死锁 RAII 封装器 (类模板) unique_lock (C++11) 实现可移动的互斥体所有权包装器 (类模板) shared_lock (C++14) 实现可移动的共享互斥体所有权封装器 ...
// 1. 在提取measurements时互斥锁m_buf会锁住,此时无法接收数据;等待measurements上面两个接收数据完成就会被唤醒 std::unique_lock<std::mutex> lk(m_buf); con.wait(lk, [&]{return (measurements = getMeasurements()).size() != 0;});// 调用wait函数,先解锁lk,然后判断lambda的返回值 lk.unlock()...
P0156R0 Variadic lock_guardVS 2015.2 N3911 void_tVS 2015 N4089 Safe Conversions In unique_ptr<T[]>VS 2015 N4169 invoke()VS 2015 N4190 Removing auto_ptr, random_shuffle(), And Old <functional> StuffVS 2015 N4258 noexcept CleanupsVS 2015 ...
Pcsx2Config old_config(std::move(EmuConfig)); EmuConfig = Pcsx2Config(); EmuConfig.CopyRuntimeConfig(old_config); { std::unique_lock<std::mutex> lock = Host::GetSettingsLock(); LoadCoreSettings(Host::GetSettingsInterface()); WarnAboutUnsafeSettings(); ApplyGameFixes(); } CheckFor...
{ std::lock_guard<std::mutex> lk(mx); if (v.empty()) v.push_back(val); } // vs. if (std::lock_guard<std::mutex> lk(mx); v.empty()) { v.push_back(val); } Foo gadget(args); switch (auto s = gadget.status()) { case OK: gadget.zip(); break; case Bad: throw ...
std::lock_guard<std::mutex> guard(mutex_); if (fired_) { return ONNXIFI_STATUS_INVALID_STATE; } if (cudaEventRecord(event_, stream_) == cudaSuccess) { fired_ = true; return ONNXIFI_STATUS_SUCCESS; } else { return ONNXIFI_STATUS_INTERNAL_ERROR; ...
lock<>() (C++11 起) lock_guard<> (C++11 起) log() log<>() (std::complex) log<>() (std::valarray) log10() log10<>() (std::complex) log10<>() (std::valarray) log10f() (C++11 起) log10l() (C++11 起) log1p() (C++11 起) log1pf() (C++11 起) log1pl() (C++...
- This is a modal window. No compatible source was found for this media. Asynchronous Execution in C++ In C++,std::futureandstd::promiseare mechanisms which are used for asynchronous programming that help manage data or result in communication between threads, allowing one thread to provide a ...
* Changed std::try_lock() to use pack expansion instead of recursion. * Improved std::lock()’s deadlock avoidance algorithm to use lock() operations instead of spinning on all the locks’ try_lock()s. * Enabled the Named Return Value Optimization in system_category::message(). ...