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wine/windows/timer.c
Patrik Stridvall 2ece70e77b Various documentation fixes.
2000-12-22 01:38:01 +00:00

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/*
* Timer functions
*
* Copyright 1993 Alexandre Julliard
*/
#include "windef.h"
#include "wingdi.h"
#include "wine/winuser16.h"
#include "winuser.h"
#include "queue.h"
#include "task.h"
#include "winproc.h"
#include "services.h"
#include "message.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(timer);
typedef struct tagTIMER
{
HWND hwnd;
HQUEUE16 hq;
UINT16 msg; /* WM_TIMER or WM_SYSTIMER */
UINT id;
UINT timeout;
HANDLE hService;
BOOL expired;
HWINDOWPROC proc;
} TIMER;
#define NB_TIMERS 34
#define NB_RESERVED_TIMERS 2 /* for SetSystemTimer */
#define SYS_TIMER_RATE 54925
static TIMER TimersArray[NB_TIMERS];
static CRITICAL_SECTION csTimer = CRITICAL_SECTION_INIT;
/***********************************************************************
* TIMER_ClearTimer
*
* Clear and remove a timer.
*/
static void TIMER_ClearTimer( TIMER * pTimer )
{
if ( pTimer->hService != INVALID_HANDLE_VALUE )
{
SERVICE_Delete( pTimer->hService );
pTimer->hService = INVALID_HANDLE_VALUE;
}
if ( pTimer->expired )
{
QUEUE_DecTimerCount( pTimer->hq );
pTimer->expired = FALSE;
}
pTimer->hwnd = 0;
pTimer->msg = 0;
pTimer->id = 0;
pTimer->timeout = 0;
WINPROC_FreeProc( pTimer->proc, WIN_PROC_TIMER );
}
/***********************************************************************
* TIMER_RemoveWindowTimers
*
* Remove all timers for a given window.
*/
void TIMER_RemoveWindowTimers( HWND hwnd )
{
int i;
TIMER *pTimer;
EnterCriticalSection( &csTimer );
for (i = NB_TIMERS, pTimer = TimersArray; i > 0; i--, pTimer++)
if ((pTimer->hwnd == hwnd) && pTimer->timeout)
TIMER_ClearTimer( pTimer );
LeaveCriticalSection( &csTimer );
}
/***********************************************************************
* TIMER_RemoveQueueTimers
*
* Remove all timers for a given queue.
*/
void TIMER_RemoveQueueTimers( HQUEUE16 hqueue )
{
int i;
TIMER *pTimer;
EnterCriticalSection( &csTimer );
for (i = NB_TIMERS, pTimer = TimersArray; i > 0; i--, pTimer++)
if ((pTimer->hq == hqueue) && pTimer->timeout)
TIMER_ClearTimer( pTimer );
LeaveCriticalSection( &csTimer );
}
/***********************************************************************
* TIMER_CheckTimer
*/
static void CALLBACK TIMER_CheckTimer( ULONG_PTR timer_ptr )
{
TIMER *pTimer = (TIMER *)timer_ptr;
HQUEUE16 wakeQueue = 0;
EnterCriticalSection( &csTimer );
/* Paranoid check to prevent a race condition ... */
if ( !pTimer->timeout )
{
LeaveCriticalSection( &csTimer );
return;
}
if ( !pTimer->expired )
{
TRACE("Timer expired: %04x, %04x, %04x, %08lx\n",
pTimer->hwnd, pTimer->msg, pTimer->id, (DWORD)pTimer->proc);
pTimer->expired = TRUE;
wakeQueue = pTimer->hq;
}
LeaveCriticalSection( &csTimer );
/* Note: This has to be done outside the csTimer critical section,
otherwise we'll get deadlocks. */
if ( wakeQueue )
QUEUE_IncTimerCount( wakeQueue );
}
/***********************************************************************
* TIMER_GetTimerMsg
*
* Build a message for an expired timer.
*/
BOOL TIMER_GetTimerMsg( MSG *msg, HWND hwnd,
HQUEUE16 hQueue, BOOL remove )
{
TIMER *pTimer;
int i;
EnterCriticalSection( &csTimer );
for (i = 0, pTimer = TimersArray; i < NB_TIMERS; i++, pTimer++)
if ( pTimer->timeout != 0 && pTimer->expired
&& (hwnd? (pTimer->hwnd == hwnd) : (pTimer->hq == hQueue)) )
break;
if ( i == NB_TIMERS )
{
LeaveCriticalSection( &csTimer );
return FALSE; /* No timer */
}
TRACE("Timer got message: %04x, %04x, %04x, %08lx\n",
pTimer->hwnd, pTimer->msg, pTimer->id, (DWORD)pTimer->proc);
if (remove)
pTimer->expired = FALSE;
/* Build the message */
msg->hwnd = pTimer->hwnd;
msg->message = pTimer->msg;
msg->wParam = pTimer->id;
msg->lParam = (LONG)pTimer->proc;
msg->time = GetTickCount();
LeaveCriticalSection( &csTimer );
return TRUE;
}
/***********************************************************************
* TIMER_SetTimer
*/
static UINT TIMER_SetTimer( HWND hwnd, UINT id, UINT timeout,
WNDPROC16 proc, WINDOWPROCTYPE type, BOOL sys )
{
int i;
TIMER * pTimer;
if (!timeout)
{ /* timeout==0 is a legal argument UB 990821*/
WARN("Timeout== 0 not implemented, using timeout=1\n");
timeout=1;
}
EnterCriticalSection( &csTimer );
/* Check if there's already a timer with the same hwnd and id */
for (i = 0, pTimer = TimersArray; i < NB_TIMERS; i++, pTimer++)
if ((pTimer->hwnd == hwnd) && (pTimer->id == id) &&
(pTimer->timeout != 0))
{
TIMER_ClearTimer( pTimer );
break;
}
if ( i == NB_TIMERS )
{
/* Find a free timer */
for (i = 0, pTimer = TimersArray; i < NB_TIMERS; i++, pTimer++)
if (!pTimer->timeout) break;
if ( (i >= NB_TIMERS) ||
(!sys && (i >= NB_TIMERS-NB_RESERVED_TIMERS)) )
{
LeaveCriticalSection( &csTimer );
return 0;
}
}
if (!hwnd) id = i + 1;
/* Add the timer */
pTimer->hwnd = hwnd;
pTimer->hq = (hwnd) ? GetThreadQueue16( GetWindowThreadProcessId( hwnd, NULL ) )
: GetFastQueue16( );
pTimer->msg = sys ? WM_SYSTIMER : WM_TIMER;
pTimer->id = id;
pTimer->timeout = timeout;
pTimer->proc = (HWINDOWPROC)0;
if (proc) WINPROC_SetProc( &pTimer->proc, proc, type, WIN_PROC_TIMER );
pTimer->expired = FALSE;
pTimer->hService = SERVICE_AddTimer( max( timeout, (SYS_TIMER_RATE+500)/1000 ),
TIMER_CheckTimer, (ULONG_PTR)pTimer );
TRACE("Timer added: %p, %04x, %04x, %04x, %08lx\n",
pTimer, pTimer->hwnd, pTimer->msg, pTimer->id,
(DWORD)pTimer->proc );
LeaveCriticalSection( &csTimer );
if (!id) return TRUE;
else return id;
}
/***********************************************************************
* TIMER_KillTimer
*/
static BOOL TIMER_KillTimer( HWND hwnd, UINT id, BOOL sys )
{
int i;
TIMER * pTimer;
EnterCriticalSection( &csTimer );
/* Find the timer */
for (i = 0, pTimer = TimersArray; i < NB_TIMERS; i++, pTimer++)
if ((pTimer->hwnd == hwnd) && (pTimer->id == id) &&
(pTimer->timeout != 0)) break;
if ( (i >= NB_TIMERS) ||
(!sys && (i >= NB_TIMERS-NB_RESERVED_TIMERS)) ||
(!sys && (pTimer->msg != WM_TIMER)) ||
(sys && (pTimer->msg != WM_SYSTIMER)) )
{
LeaveCriticalSection( &csTimer );
return FALSE;
}
/* Delete the timer */
TIMER_ClearTimer( pTimer );
LeaveCriticalSection( &csTimer );
return TRUE;
}
/***********************************************************************
* SetTimer (USER.10)
*/
UINT16 WINAPI SetTimer16( HWND16 hwnd, UINT16 id, UINT16 timeout,
TIMERPROC16 proc )
{
TRACE("%04x %d %d %08lx\n",
hwnd, id, timeout, (LONG)proc );
return TIMER_SetTimer( hwnd, id, timeout, (WNDPROC16)proc,
WIN_PROC_16, FALSE );
}
/***********************************************************************
* SetTimer (USER32.@)
*/
UINT WINAPI SetTimer( HWND hwnd, UINT id, UINT timeout,
TIMERPROC proc )
{
TRACE("%04x %d %d %08lx\n",
hwnd, id, timeout, (LONG)proc );
return TIMER_SetTimer( hwnd, id, timeout, (WNDPROC16)proc,
WIN_PROC_32A, FALSE );
}
/***********************************************************************
* TIMER_IsTimerValid
*/
BOOL TIMER_IsTimerValid( HWND hwnd, UINT id, HWINDOWPROC hProc )
{
int i;
TIMER *pTimer;
BOOL ret = FALSE;
EnterCriticalSection( &csTimer );
for (i = 0, pTimer = TimersArray; i < NB_TIMERS; i++, pTimer++)
if ((pTimer->hwnd == hwnd) && (pTimer->id == id) &&
(pTimer->proc == hProc))
{
ret = TRUE;
break;
}
LeaveCriticalSection( &csTimer );
return ret;
}
/***********************************************************************
* SetSystemTimer (USER.11)
*/
UINT16 WINAPI SetSystemTimer16( HWND16 hwnd, UINT16 id, UINT16 timeout,
TIMERPROC16 proc )
{
TRACE("%04x %d %d %08lx\n",
hwnd, id, timeout, (LONG)proc );
return TIMER_SetTimer( hwnd, id, timeout, (WNDPROC16)proc,
WIN_PROC_16, TRUE );
}
/***********************************************************************
* SetSystemTimer (USER32.@)
*/
UINT WINAPI SetSystemTimer( HWND hwnd, UINT id, UINT timeout,
TIMERPROC proc )
{
TRACE("%04x %d %d %08lx\n",
hwnd, id, timeout, (LONG)proc );
return TIMER_SetTimer( hwnd, id, timeout, (WNDPROC16)proc,
WIN_PROC_32A, TRUE );
}
/***********************************************************************
* KillTimer (USER.12)
*/
BOOL16 WINAPI KillTimer16( HWND16 hwnd, UINT16 id )
{
TRACE("%04x %d\n", hwnd, id );
return TIMER_KillTimer( hwnd, id, FALSE );
}
/***********************************************************************
* KillTimer (USER32.@)
*/
BOOL WINAPI KillTimer( HWND hwnd, UINT id )
{
TRACE("%04x %d\n", hwnd, id );
return TIMER_KillTimer( hwnd, id, FALSE );
}
/***********************************************************************
* KillSystemTimer (USER.182)
*/
BOOL16 WINAPI KillSystemTimer16( HWND16 hwnd, UINT16 id )
{
TRACE("%04x %d\n", hwnd, id );
return TIMER_KillTimer( hwnd, id, TRUE );
}
/***********************************************************************
* KillSystemTimer (USER32.@)
*/
BOOL WINAPI KillSystemTimer( HWND hwnd, UINT id )
{
TRACE("%04x %d\n", hwnd, id );
return TIMER_KillTimer( hwnd, id, TRUE );
}
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