WakeAllConditionVariable function (synchapi.h)

Article
02/22/2024

Wake all threads waiting on the specified condition variable.

Syntax

void WakeAllConditionVariable(
  [in, out] PCONDITION_VARIABLE ConditionVariable
);

Parameters

[in, out] ConditionVariable

A pointer to the condition variable.

Return value

None

Remarks

The WakeAllConditionVariable wakes all waiting threads while the WakeConditionVariable wakes only a single thread. Waking one thread is similar to setting an auto-reset event, while waking all threads is similar to pulsing a manual reset event but more reliable (see PulseEvent for details).

Requirements

Requirement	Value
Minimum supported client	Windows Vista [desktop apps \| UWP apps]
Minimum supported server	Windows Server 2008 [desktop apps \| UWP apps]
Target Platform	Windows
Header	synchapi.h (include Windows.h on Windows 7, Windows Server 2008 Windows Server 2008 R2)
Library	Kernel32.lib
DLL	Kernel32.dll