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ntdll: Implement RtlSleepConditionVariableSRW.

This commit is contained in:
Sebastian Lackner 2014-01-22 01:05:15 +01:00 committed by Alexandre Julliard
parent e7b3a43759
commit fad29fc5d9
3 changed files with 46 additions and 0 deletions
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1
dlls/ntdll/ntdll.spec
View File

@ -869,6 +869,7 @@
@ stub RtlSetUserValueHeap
@ stdcall RtlSizeHeap(long long ptr)
@ stdcall RtlSleepConditionVariableCS(ptr ptr ptr)
@ stdcall RtlSleepConditionVariableSRW(ptr ptr ptr long)
@ stub RtlSplay
@ stub RtlStartRXact
# @ stub RtlStatMemoryStream

44
dlls/ntdll/sync.c
View File

@ -1696,3 +1696,47 @@ NTSTATUS WINAPI RtlSleepConditionVariableCS( RTL_CONDITION_VARIABLE *variable, R
RtlEnterCriticalSection( crit );
return status;
}
/***********************************************************************
* RtlSleepConditionVariableSRW (NTDLL.@)
*
* Atomically releases the SRWLock and suspends the thread,
* waiting for a Wake(All)ConditionVariable event. Afterwards it enters
* the SRWLock again with the same access rights and returns.
*
* PARAMS
* variable [I/O] condition variable
* lock [I/O] SRWLock to leave temporarily
* timeout [I] timeout
* flags [I] type of the current lock (exclusive / shared)
*
* RETURNS
* see NtWaitForKeyedEvent for all possible return values.
*
* NOTES
* the behaviour is undefined if the thread doesn't own the lock.
*/
NTSTATUS WINAPI RtlSleepConditionVariableSRW( RTL_CONDITION_VARIABLE *variable, RTL_SRWLOCK *lock,
const LARGE_INTEGER *timeout, ULONG flags )
{
NTSTATUS status;
interlocked_xchg_add( (int *)&variable->Ptr, 1 );
if (flags & RTL_CONDITION_VARIABLE_LOCKMODE_SHARED)
RtlReleaseSRWLockShared( lock );
else
RtlReleaseSRWLockExclusive( lock );
status = NtWaitForKeyedEvent( keyed_event, &variable->Ptr, FALSE, timeout );
if (status != STATUS_SUCCESS)
{
if (!interlocked_dec_if_nonzero( (int *)&variable->Ptr ))
status = NtWaitForKeyedEvent( keyed_event, &variable->Ptr, FALSE, NULL );
}
if (flags & RTL_CONDITION_VARIABLE_LOCKMODE_SHARED)
RtlAcquireSRWLockShared( lock );
else
RtlAcquireSRWLockExclusive( lock );
return status;
}

1
include/winternl.h
View File

@ -2503,6 +2503,7 @@ NTSYSAPI NTSTATUS WINAPI RtlSetThreadErrorMode(DWORD,LPDWORD);
NTSYSAPI NTSTATUS WINAPI RtlSetTimeZoneInformation(const RTL_TIME_ZONE_INFORMATION*);
NTSYSAPI SIZE_T WINAPI RtlSizeHeap(HANDLE,ULONG,const void*);
NTSYSAPI NTSTATUS WINAPI RtlSleepConditionVariableCS(RTL_CONDITION_VARIABLE*,RTL_CRITICAL_SECTION*,const LARGE_INTEGER*);
NTSYSAPI NTSTATUS WINAPI RtlSleepConditionVariableSRW(RTL_CONDITION_VARIABLE*,RTL_SRWLOCK*,const LARGE_INTEGER*,ULONG);
NTSYSAPI NTSTATUS WINAPI RtlStringFromGUID(REFGUID,PUNICODE_STRING);
NTSYSAPI LPDWORD WINAPI RtlSubAuthoritySid(PSID,DWORD);
NTSYSAPI LPBYTE WINAPI RtlSubAuthorityCountSid(PSID);