wait_conditionT_wait_conditionWaitConditionWaitConditionwait_condition (算子名称)

名称

wait_conditionT_wait_conditionWaitConditionWaitConditionwait_condition — wait on the signal of a condition synchronization object.

参数签名

描述

wait_conditionwait_conditionWaitConditionWaitConditionWaitConditionwait_condition atomically unlocks the MutexHandleMutexHandleMutexHandleMutexHandlemutexHandlemutex_handle (as per unlock_mutexunlock_mutexUnlockMutexUnlockMutexUnlockMutexunlock_mutex) and waits for the condition variable ConditionHandleConditionHandleConditionHandleConditionHandleconditionHandlecondition_handle to be signaled. The thread execution is suspended and does not consume any CPU time until the condition variable is signaled. The mutex must be locked by the calling thread on entrance to wait_conditionwait_conditionWaitConditionWaitConditionWaitConditionwait_condition. Before returning to the calling thread, wait_conditionwait_conditionWaitConditionWaitConditionWaitConditionwait_condition re-acquires MutexHandleMutexHandleMutexHandleMutexHandlemutexHandlemutex_handle (as per lock_mutexlock_mutexLockMutexLockMutexLockMutexlock_mutex).

Unlocking the mutex and suspending on the condition variable is done atomically. Thus, if all threads always acquire the mutex before signaling the condition, this guarantees that the condition cannot be signaled (and thus ignored) between the time a thread locks the mutex and the time it waits on the condition variable.

运行信息

• Multithreading type: independent (runs in parallel even with exclusive operators).
• 多线程作用域:全局(可以从任何线程调用)。
• 未经并行化处理。

参数表

结果

wait_conditionwait_conditionWaitConditionWaitConditionWaitConditionwait_condition returns 2 ( H_MSG_TRUE) if all parameters are correct. 如有必要，将引发异常。

可能的后置算子

signal_conditionsignal_conditionSignalConditionSignalConditionSignalConditionsignal_condition, clear_conditionclear_conditionClearConditionClearConditionClearConditionclear_condition

模块

Foundation