void __stdcall Sleep(_In_ DWORD dwMilliseconds)
{
static HANDLE singletonEvent = nullptr;
HANDLE sleepEvent = singletonEvent;
// Demand create the event.
if (!sleepEvent)
{
sleepEvent = CreateEventEx(nullptr, nullptr, CREATE_EVENT_MANUAL_RESET, EVENT_ALL_ACCESS);
if (!sleepEvent)
return;
HANDLE previousEvent = InterlockedCompareExchangePointerRelease(&singletonEvent, sleepEvent, nullptr);
if (previousEvent)
{
// Back out if multiple threads try to demand create at the same time.
CloseHandle(sleepEvent);
sleepEvent = previousEvent;
}
}
// Emulate sleep by waiting with timeout on an event that is never signaled.
WaitForSingleObjectEx(sleepEvent, dwMilliseconds, false);
return;
}
/*
* verifyconnect() returns TRUE if the connect really has happened.
*/
_Use_decl_annotations_ VOID WINAPI CurlSleep(DWORD dwMilliseconds)
{
static HANDLE singletonEvent = NULL;
HANDLE sleepEvent = singletonEvent;
HANDLE previousEvent = NULL;
// Demand create the event.
if (!sleepEvent)
{
sleepEvent = CreateEventEx(NULL, NULL, CREATE_EVENT_MANUAL_RESET, EVENT_ALL_ACCESS);
if (!sleepEvent)
return;
previousEvent = InterlockedCompareExchangePointerRelease(&singletonEvent, sleepEvent, NULL);
if (previousEvent)
{
// Back out if multiple threads try to demand create at the same time.
CloseHandle(sleepEvent);
sleepEvent = previousEvent;
}
}
// Emulate sleep by waiting with timeout on an event that is never signalled.
WaitForSingleObjectEx(sleepEvent, dwMilliseconds, false);
}
FORCEINLINE
ULONG_PTR
InternalCmpXChgCondVarRel(IN OUT PRTL_CONDITION_VARIABLE ConditionVariable,
IN ULONG_PTR Exchange,
IN ULONG_PTR Comperand)
{
return (ULONG_PTR)InterlockedCompareExchangePointerRelease(&ConditionVariable->Ptr,
(PVOID)Exchange,
(PVOID)Comperand);
}
