std::swap(std::unique_lock) (C++11) 特化std::swap算法 (函数模板) 注解 一种常见的新手错误是“忘记”给lock_guard变量命名,例如std::lock_guard(mtx);(它默认构造了一个名为mtx的lock_guard变量),或者std::lock_guard{mtx};(它构造了一个纯右值对象并立即销毁),而并未真正为作用域的剩余部分构造持有...
std::lock_guard 在标头<mutex>定义 template<classMutex> classlock_guard; (C++11 起) 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。
auto lg = std::lock_guard(m); critical_section(); } } catch(const std::exception& e) { // Handle exception } }Use std::lock_guard or std::unique_lock for exception safety.How to wait for a signal or create a synchronization point for multiple threads#...
imu_buf.push(imu_msg); m_buf.unlock(); // 3.唤醒作用于process线程中的获取观测值数据的函数 con.notify_one(); last_imu_t = imu_msg->header.stamp.toSec(); { // 构造互斥锁m_state,析构时解锁 std::lock_guard<std::mutex> lg(m_state); // 4. 递推得到IMU的PQV predict(imu_msg);...
void SysData::SetSystemMode(SystemMode::Type systemMode) { LockGuard lockGuard(&m_lock); // Create the callback data SystemModeChanged callbackData; callbackData.PreviousSystemMode = m_systemMode; callbackData.CurrentSystemMode = systemMode; // Update the system mode m_systemMode = system...
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; ...
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; ...
std::async− It is used to launch a task asynchronously. It returns astd::futurethat can be used to obtain the result of the task once it's completed. Print Page Previous Next
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。
* 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(). * conjunction and disjunction now instantiate N + 1 types, instead of 2N + 2...