Sweden-Number/scheduler/synchro.c

176 lines
5.5 KiB
C

/*
* Win32 process and thread synchronisation
*
* Copyright 1997 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "winbase.h"
#include "winternl.h"
#include "../kernel/kernel_private.h" /* FIXME: to be changed when moving file to dlls/kernel */
/***********************************************************************
* Sleep (KERNEL32.@)
*/
VOID WINAPI Sleep( DWORD timeout )
{
WaitForMultipleObjectsEx( 0, NULL, FALSE, timeout, FALSE );
}
/******************************************************************************
* SleepEx (KERNEL32.@)
*/
DWORD WINAPI SleepEx( DWORD timeout, BOOL alertable )
{
DWORD ret = WaitForMultipleObjectsEx( 0, NULL, FALSE, timeout, alertable );
if (ret != WAIT_IO_COMPLETION) ret = 0;
return ret;
}
/***********************************************************************
* WaitForSingleObject (KERNEL32.@)
*/
DWORD WINAPI WaitForSingleObject( HANDLE handle, DWORD timeout )
{
return WaitForMultipleObjectsEx( 1, &handle, FALSE, timeout, FALSE );
}
/***********************************************************************
* WaitForSingleObjectEx (KERNEL32.@)
*/
DWORD WINAPI WaitForSingleObjectEx( HANDLE handle, DWORD timeout,
BOOL alertable )
{
return WaitForMultipleObjectsEx( 1, &handle, FALSE, timeout, alertable );
}
/***********************************************************************
* WaitForMultipleObjects (KERNEL32.@)
*/
DWORD WINAPI WaitForMultipleObjects( DWORD count, const HANDLE *handles,
BOOL wait_all, DWORD timeout )
{
return WaitForMultipleObjectsEx( count, handles, wait_all, timeout, FALSE );
}
/***********************************************************************
* WaitForMultipleObjectsEx (KERNEL32.@)
*/
DWORD WINAPI WaitForMultipleObjectsEx( DWORD count, const HANDLE *handles,
BOOL wait_all, DWORD timeout,
BOOL alertable )
{
NTSTATUS status;
HANDLE hloc[MAXIMUM_WAIT_OBJECTS];
int i;
if (count >= MAXIMUM_WAIT_OBJECTS)
{
SetLastError(ERROR_INVALID_PARAMETER);
return WAIT_FAILED;
}
for (i = 0; i < count; i++)
{
if ((handles[i] == (HANDLE)STD_INPUT_HANDLE) ||
(handles[i] == (HANDLE)STD_OUTPUT_HANDLE) ||
(handles[i] == (HANDLE)STD_ERROR_HANDLE))
hloc[i] = GetStdHandle( (DWORD)handles[i] );
else
hloc[i] = handles[i];
/* yes, even screen buffer console handles are waitable, and are
* handled as a handle to the console itself !!
*/
if (is_console_handle(hloc[i]))
{
if (!VerifyConsoleIoHandle(hloc[i]))
{
return FALSE;
}
hloc[i] = GetConsoleInputWaitHandle();
}
}
if (timeout == INFINITE)
{
status = NtWaitForMultipleObjects( count, hloc, wait_all, alertable, NULL );
}
else
{
LARGE_INTEGER time;
time.QuadPart = timeout * (ULONGLONG)10000;
time.QuadPart = -time.QuadPart;
status = NtWaitForMultipleObjects( count, hloc, wait_all, alertable, &time );
}
if (HIWORD(status)) /* is it an error code? */
{
SetLastError( RtlNtStatusToDosError(status) );
status = WAIT_FAILED;
}
return status;
}
/***********************************************************************
* WaitForSingleObject (KERNEL.460)
*/
DWORD WINAPI WaitForSingleObject16( HANDLE handle, DWORD timeout )
{
DWORD retval, mutex_count;
ReleaseThunkLock( &mutex_count );
retval = WaitForSingleObject( handle, timeout );
RestoreThunkLock( mutex_count );
return retval;
}
/***********************************************************************
* WaitForMultipleObjects (KERNEL.461)
*/
DWORD WINAPI WaitForMultipleObjects16( DWORD count, const HANDLE *handles,
BOOL wait_all, DWORD timeout )
{
DWORD retval, mutex_count;
ReleaseThunkLock( &mutex_count );
retval = WaitForMultipleObjectsEx( count, handles, wait_all, timeout, FALSE );
RestoreThunkLock( mutex_count );
return retval;
}
/***********************************************************************
* WaitForMultipleObjectsEx (KERNEL.495)
*/
DWORD WINAPI WaitForMultipleObjectsEx16( DWORD count, const HANDLE *handles,
BOOL wait_all, DWORD timeout, BOOL alertable )
{
DWORD retval, mutex_count;
ReleaseThunkLock( &mutex_count );
retval = WaitForMultipleObjectsEx( count, handles, wait_all, timeout, alertable );
RestoreThunkLock( mutex_count );
return retval;
}