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user32: Add exception handling for timer callbacks.

This commit is contained in:
Peter Dons Tychsen 2009-09-30 01:39:25 +02:00 committed by Alexandre Julliard
parent 9196e2ed21
commit f20f411925
2 changed files with 44 additions and 5 deletions
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36
dlls/user32/message.c
View File

@ -43,6 +43,7 @@
#include "win.h"
#include "controls.h"
#include "wine/debug.h"
#include "wine/exception.h"
WINE_DEFAULT_DEBUG_CHANNEL(msg);
WINE_DECLARE_DEBUG_CHANNEL(relay);
@ -3065,8 +3066,20 @@ LRESULT WINAPI DispatchMessageA( const MSG* msg )
/* Process timer messages */
if ((msg->message == WM_TIMER) || (msg->message == WM_SYSTIMER))
{
if (msg->lParam) return CallWindowProcA( (WNDPROC)msg->lParam, msg->hwnd,
msg->message, msg->wParam, GetTickCount() );
if (msg->lParam)
{
__TRY
{
retval = CallWindowProcA( (WNDPROC)msg->lParam, msg->hwnd,
msg->message, msg->wParam, GetTickCount() );
}
__EXCEPT_PAGE_FAULT
{
retval = 0;
}
__ENDTRY
return retval;
}
}
if (!msg->hwnd) return 0;
@ -3103,7 +3116,8 @@ LRESULT WINAPI DispatchMessageA( const MSG* msg )
* If the lpMsg parameter points to a WM_TIMER message and the
* parameter of the WM_TIMER message is not NULL, the lParam parameter
* points to the function that is called instead of the window
* procedure.
* procedure. The function stored in lParam (timer callback) is protected
* from causing page-faults.
*
* The message must be valid.
*
@ -3123,8 +3137,20 @@ LRESULT WINAPI DispatchMessageW( const MSG* msg )
/* Process timer messages */
if ((msg->message == WM_TIMER) || (msg->message == WM_SYSTIMER))
{
if (msg->lParam) return CallWindowProcW( (WNDPROC)msg->lParam, msg->hwnd,
msg->message, msg->wParam, GetTickCount() );
if (msg->lParam)
{
__TRY
{
retval = CallWindowProcW( (WNDPROC)msg->lParam, msg->hwnd,
msg->message, msg->wParam, GetTickCount() );
}
__EXCEPT_PAGE_FAULT
{
retval = 0;
}
__ENDTRY
return retval;
}
}
if (!msg->hwnd) return 0;

13
dlls/user32/tests/msg.c
View File

@ -7813,6 +7813,12 @@ static VOID CALLBACK tfunc(HWND hwnd, UINT uMsg, UINT_PTR id, DWORD dwTime)
{
}
static VOID CALLBACK tfunc_crash(HWND hwnd, UINT uMsg, UINT_PTR id, DWORD dwTime)
{
/* Crash on purpose */
*(volatile int *)0 = 2;
}
#define TIMER_ID 0x19
static DWORD WINAPI timer_thread_proc(LPVOID x)
@ -7834,6 +7840,7 @@ static void test_timers(void)
{
struct timer_info info;
DWORD id;
MSG msg;
info.hWnd = CreateWindow ("TestWindowClass", NULL,
WS_OVERLAPPEDWINDOW ,
@ -7855,6 +7862,12 @@ static void test_timers(void)
ok( KillTimer(info.hWnd, TIMER_ID), "KillTimer failed\n");
/* Test timer callback with crash */
info.id = SetTimer(info.hWnd, TIMER_ID, 0, tfunc_crash);
ok(info.id, "SetTimer failed\n");
Sleep(150);
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) DispatchMessage(&msg);
ok(DestroyWindow(info.hWnd), "failed to destroy window\n");
}