Windows条件变量

InitializeConditionVariable
SleepConditionVariableCS
SleepConditionVariableSRW
WakeAllConditionVariable
WakeConditionVariable // 唤醒睡眠中的条件变量

https://docs.microsoft.com/zh-cn/windows/win32/sync/condition-variables

使用方法
CRITICAL_SECTION CritSection;
CONDITION_VARIABLE ConditionVar;

void PerformOperationOnSharedData()
{
// 锁定临界区
EnterCriticalSection(&CritSection);

// Wait until the predicate is TRUE

while( TestPredicate() == FALSE )
{
// 该函数进入睡眠状态，并释放临界区，当被唤醒时，自动锁定临界区
SleepConditionVariableCS(&ConditionVar, &CritSection, INFINITE);
}

// The data can be changed safely because we own the critical
// section and the predicate is TRUE

ChangeSharedData();

// 释放临界区
LeaveCriticalSection(&CritSection);

// If necessary, signal the condition variable by calling
// WakeConditionVariable or WakeAllConditionVariable so other
// threads can wake
}