Sweden-Number/scheduler/synchro.c

215 lines
6.2 KiB
C

/*
* Win32 process and thread synchronisation
*
* Copyright 1997 Alexandre Julliard
*/
#include <assert.h>
#include <signal.h>
#include <sys/time.h>
#include <unistd.h>
#include "k32obj.h"
#include "heap.h"
#include "process.h"
#include "thread.h"
#include "winerror.h"
#include "syslevel.h"
#include "server.h"
#include "debug.h"
/***********************************************************************
* SYNC_BuildWaitStruct
*/
static BOOL32 SYNC_BuildWaitStruct( DWORD count, const HANDLE32 *handles,
BOOL32 wait_all, WAIT_STRUCT *wait )
{
DWORD i;
K32OBJ **ptr;
SYSTEM_LOCK();
wait->count = count;
wait->wait_all = wait_all;
for (i = 0, ptr = wait->objs; i < count; i++, ptr++)
{
TRACE(win32,"handle %i is %08x\n",i,handles[i]);
if (!(*ptr = HANDLE_GetObjPtr( PROCESS_Current(), handles[i],
K32OBJ_UNKNOWN, SYNCHRONIZE,
&wait->server[i] )))
{
ERR(win32, "Bad handle %08x\n", handles[i]);
break;
}
if (wait->server[i] == -1)
WARN(win32,"No server handle for %08x (type %d)\n",
handles[i], (*ptr)->type );
}
if (i != count)
{
/* There was an error */
while (i--) K32OBJ_DecCount( wait->objs[i] );
}
SYSTEM_UNLOCK();
return (i == count);
}
/***********************************************************************
* SYNC_FreeWaitStruct
*/
static void SYNC_FreeWaitStruct( WAIT_STRUCT *wait )
{
DWORD i;
K32OBJ **ptr;
SYSTEM_LOCK();
for (i = 0, ptr = wait->objs; i < wait->count; i++, ptr++)
K32OBJ_DecCount( *ptr );
SYSTEM_UNLOCK();
}
/***********************************************************************
* Sleep (KERNEL32.679)
*/
VOID WINAPI Sleep( DWORD timeout )
{
WaitForMultipleObjectsEx( 0, NULL, FALSE, timeout, FALSE );
}
/******************************************************************************
* SleepEx (KERNEL32.680)
*/
DWORD WINAPI SleepEx( DWORD timeout, BOOL32 alertable )
{
DWORD ret = WaitForMultipleObjectsEx( 0, NULL, FALSE, timeout, alertable );
if (ret != WAIT_IO_COMPLETION) ret = 0;
return ret;
}
/***********************************************************************
* WaitForSingleObject (KERNEL32.723)
*/
DWORD WINAPI WaitForSingleObject( HANDLE32 handle, DWORD timeout )
{
return WaitForMultipleObjectsEx( 1, &handle, FALSE, timeout, FALSE );
}
/***********************************************************************
* WaitForSingleObjectEx (KERNEL32.724)
*/
DWORD WINAPI WaitForSingleObjectEx( HANDLE32 handle, DWORD timeout,
BOOL32 alertable )
{
return WaitForMultipleObjectsEx( 1, &handle, FALSE, timeout, alertable );
}
/***********************************************************************
* WaitForMultipleObjects (KERNEL32.721)
*/
DWORD WINAPI WaitForMultipleObjects( DWORD count, const HANDLE32 *handles,
BOOL32 wait_all, DWORD timeout )
{
return WaitForMultipleObjectsEx( count, handles, wait_all, timeout, FALSE );
}
/***********************************************************************
* WaitForMultipleObjectsEx (KERNEL32.722)
*/
DWORD WINAPI WaitForMultipleObjectsEx( DWORD count, const HANDLE32 *handles,
BOOL32 wait_all, DWORD timeout,
BOOL32 alertable )
{
WAIT_STRUCT *wait = &THREAD_Current()->wait_struct;
struct select_request req;
struct select_reply reply;
void *apc[32];
int len;
if (count > MAXIMUM_WAIT_OBJECTS)
{
SetLastError( ERROR_INVALID_PARAMETER );
return WAIT_FAILED;
}
if (!SYNC_BuildWaitStruct( count, handles, wait_all, wait ))
return WAIT_FAILED;
req.count = count;
req.flags = 0;
req.timeout = timeout;
if (wait_all) req.flags |= SELECT_ALL;
if (alertable) req.flags |= SELECT_ALERTABLE;
if (timeout != INFINITE32) req.flags |= SELECT_TIMEOUT;
CLIENT_SendRequest( REQ_SELECT, -1, 2,
&req, sizeof(req),
wait->server, count * sizeof(int) );
CLIENT_WaitReply( &len, NULL, 2, &reply, sizeof(reply),
apc, sizeof(apc) );
if ((reply.signaled == STATUS_USER_APC) && (len > sizeof(reply)))
{
int i;
len -= sizeof(reply);
for (i = 0; i < len / sizeof(void*); i += 2)
{
PAPCFUNC func = (PAPCFUNC)apc[i];
func( (ULONG_PTR)apc[i+1] );
}
}
SYNC_FreeWaitStruct( wait );
return reply.signaled;
}
/***********************************************************************
* WIN16_WaitForSingleObject (KERNEL.460)
*/
DWORD WINAPI WIN16_WaitForSingleObject( HANDLE32 handle, DWORD timeout )
{
DWORD retval;
SYSLEVEL_ReleaseWin16Lock();
retval = WaitForSingleObject( handle, timeout );
SYSLEVEL_RestoreWin16Lock();
return retval;
}
/***********************************************************************
* WIN16_WaitForMultipleObjects (KERNEL.461)
*/
DWORD WINAPI WIN16_WaitForMultipleObjects( DWORD count, const HANDLE32 *handles,
BOOL32 wait_all, DWORD timeout )
{
DWORD retval;
SYSLEVEL_ReleaseWin16Lock();
retval = WaitForMultipleObjects( count, handles, wait_all, timeout );
SYSLEVEL_RestoreWin16Lock();
return retval;
}
/***********************************************************************
* WIN16_WaitForMultipleObjectsEx (KERNEL.495)
*/
DWORD WINAPI WIN16_WaitForMultipleObjectsEx( DWORD count,
const HANDLE32 *handles,
BOOL32 wait_all, DWORD timeout,
BOOL32 alertable )
{
DWORD retval;
SYSLEVEL_ReleaseWin16Lock();
retval = WaitForMultipleObjectsEx( count, handles,
wait_all, timeout, alertable );
SYSLEVEL_RestoreWin16Lock();
return retval;
}