Mercurial > sdl-ios-xcode
annotate src/thread/epoc/SDL_syssem.cpp @ 1287:15a89a0c52bf
Date: Tue, 15 Feb 2005 21:28:48 +0900 (JST)
From: "Michael Leonhard"
Subject: [SDL] resize bug on Win32 and patch
This is my first post to this mailing list. In this email I will detail a
bug in the behavior of resizable SDL windows on Win32. Then I will
explain the solution and provide a patch.
Symptoms:
Under Windows, an SDL display created with the SDL_RESIZABLE flag exhibits
quirky behavior when being maximized. The window is resized to the proper
size, but it is shifted upwards about half the height of the title bar.
Similarly, a window whose origin is above the top of the screen will
spontaneously move its upper-left origin upon being resized. After two
such resize-induced moves, the title bar will be entirely off the top edge
of the screen. Subsequently, when the mouse is clicked and released on
the window border, the window will shrink its height spontaneously. This
height shrinkage occurs even if the user did not resize the border.
To observe this curious situation, please invoke:
SDL-1.2.8/test/testwm.exe -resize
Cause:
A pair of integers, SDL_windowX and SDL_windowY, are defined in
video/wincommon/SDL_sysevents.c. They are used by the DirectX video
driver and the DIB video driver:
video/windx5/SDL_dx5video.c
video/windib/SDL_dibvideo.c
As I understand the source code, the primary use of these variables is to
create a rectangle that represents the surface area in CLIENT SPACE.
Client space refers to a coordinate system that originates at the upper
left corner of a Win32 Window's drawable area. This is just inside the
window border and title bar. This client space rectangle, called bounds,
is subsequently converted to screen space with a call to
AdjustWindowRectEx. The problem is found in SDL's handling of the
WM_WINDOWPOSCHANGED message. According to MSDN,
"The WM_WINDOWPOSCHANGED message is sent to a window whose
size, position, or place in the Z order has changed as a
result of a call to the SetWindowPos function or another
window-management function."
I have confirmed that this message is indeed being sent to the SDL window
when the mouse is clicked on the window border, even if the window border
is not dragged.
In video/wincommon/SDL_sysevents.c, on line 464, in response to the
WM_WINDOWPOSCHANGED message, the (potentially) new client rectangle is
obtained. This rectangle is translated into screen coordinates and THEN
assigned to the SDL_windowX and Y variables. Thus screen coordinates are
being assigned to client coordinate variables. Once this is understood,
the solution is apparent: assign SDL_windowX and Y before translating the
rectangle to screen coordinates. This is accomplished by the following
patch.
-Mike_L
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 29 Jan 2006 08:50:06 +0000 |
parents | e8157fcb3114 |
children | c9b51268668f |
rev | line source |
---|---|
173
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
1 /* |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
2 SDL - Simple DirectMedia Layer |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
3 Copyright (C) 1997, 1998, 1999, 2000 Sam Lantinga |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
4 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
5 This library is free software; you can redistribute it and/or |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
6 modify it under the terms of the GNU Library General Public |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
7 License as published by the Free Software Foundation; either |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
8 version 2 of the License, or (at your option) any later version. |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
9 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
10 This library is distributed in the hope that it will be useful, |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
13 Library General Public License for more details. |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
14 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
15 You should have received a copy of the GNU Library General Public |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
16 License along with this library; if not, write to the Free |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
18 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
19 Sam Lantinga |
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
173
diff
changeset
|
20 slouken@libsdl.org |
173
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
21 */ |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
22 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
23 /* |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
24 SDL_syssem.cpp |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
25 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
26 Epoc version by Markus Mertama (w@iki.fi) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
27 */ |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
28 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
29 #ifdef SAVE_RCSID |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
30 static char rcsid = |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
31 "@(#) $Id$"; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
32 #endif |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
33 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
34 /* Semaphore functions using the Win32 API */ |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
35 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
36 //#include <stdio.h> |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
37 //#include <stdlib.h> |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
38 #include <e32std.h> |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
39 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
40 #include "SDL_error.h" |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
41 #include "SDL_thread.h" |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
42 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
43 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
44 #define SDL_MUTEX_TIMEOUT -2 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
45 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
46 struct SDL_semaphore |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
47 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
48 TInt handle; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
49 TInt count; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
50 }; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
51 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
52 extern TInt CreateUnique(TInt (*aFunc)(const TDesC& aName, TAny*, TAny*), TAny*, TAny*); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
53 extern TInt NewThread(const TDesC& aName, TAny* aPtr1, TAny* aPtr2); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
54 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
55 TInt NewSema(const TDesC& aName, TAny* aPtr1, TAny* aPtr2) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
56 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
57 TInt value = *((TInt*) aPtr2); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
58 return ((RSemaphore*)aPtr1)->CreateGlobal(aName, value); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
59 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
60 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
61 /* Create a semaphore */ |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
62 SDL_sem *SDL_CreateSemaphore(Uint32 initial_value) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
63 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
64 RSemaphore s; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
65 TInt status = CreateUnique(NewSema, &s, &initial_value); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
66 if(status != KErrNone) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
67 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
68 SDL_SetError("Couldn't create semaphore"); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
69 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
70 SDL_semaphore* sem = new /*(ELeave)*/ SDL_semaphore; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
71 sem->handle = s.Handle(); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
72 sem->count = initial_value; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
73 return(sem); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
74 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
75 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
76 /* Free the semaphore */ |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
77 void SDL_DestroySemaphore(SDL_sem *sem) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
78 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
79 if ( sem ) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
80 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
81 RSemaphore sema; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
82 sema.SetHandle(sem->handle); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
83 sema.Signal(sema.Count()); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
84 sema.Close(); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
85 delete sem; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
86 sem = NULL; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
87 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
88 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
89 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
90 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
91 struct TInfo |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
92 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
93 TInfo(TInt aTime, TInt aHandle) : |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
94 iTime(aTime), iHandle(aHandle), iVal(0) {} |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
95 TInt iTime; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
96 TInt iHandle; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
97 TInt iVal; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
98 }; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
99 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
100 TBool ThreadRun(TAny* aInfo) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
101 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
102 TInfo* info = STATIC_CAST(TInfo*, aInfo); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
103 User::After(info->iTime); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
104 RSemaphore sema; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
105 sema.SetHandle(info->iHandle); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
106 sema.Signal(); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
107 info->iVal = SDL_MUTEX_TIMEOUT; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
108 return 0; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
109 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
110 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
111 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
112 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
113 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
114 void _WaitAll(SDL_sem *sem) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
115 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
116 //since SemTryWait may changed the counter. |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
117 //this may not be atomic, but hopes it works. |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
118 RSemaphore sema; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
119 sema.SetHandle(sem->handle); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
120 sema.Wait(); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
121 while(sem->count < 0) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
122 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
123 sema.Wait(); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
124 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
125 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
126 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
127 int SDL_SemWaitTimeout(SDL_sem *sem, Uint32 timeout) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
128 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
129 if ( ! sem ) { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
130 SDL_SetError("Passed a NULL sem"); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
131 return -1; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
132 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
133 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
134 if ( timeout == SDL_MUTEX_MAXWAIT ) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
135 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
136 _WaitAll(sem); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
137 return SDL_MUTEX_MAXWAIT; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
138 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
139 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
140 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
141 RThread thread; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
142 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
143 TInfo* info = new (ELeave)TInfo(timeout, sem->handle); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
144 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
145 TInt status = CreateUnique(NewThread, &thread, info); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
146 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
147 if(status != KErrNone) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
148 return status; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
149 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
150 thread.Resume(); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
151 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
152 _WaitAll(sem); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
153 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
154 if(thread.ExitType() == EExitPending) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
155 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
156 thread.Kill(SDL_MUTEX_TIMEOUT); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
157 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
158 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
159 thread.Close(); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
160 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
161 return info->iVal; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
162 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
163 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
164 int SDL_SemTryWait(SDL_sem *sem) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
165 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
166 if(sem->count > 0) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
167 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
168 sem->count--; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
169 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
170 return SDL_MUTEX_TIMEOUT; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
171 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
172 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
173 int SDL_SemWait(SDL_sem *sem) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
174 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
175 return SDL_SemWaitTimeout(sem, SDL_MUTEX_MAXWAIT); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
176 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
177 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
178 /* Returns the current count of the semaphore */ |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
179 Uint32 SDL_SemValue(SDL_sem *sem) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
180 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
181 if ( ! sem ) { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
182 SDL_SetError("Passed a NULL sem"); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
183 return 0; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
184 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
185 return sem->count; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
186 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
187 |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
188 int SDL_SemPost(SDL_sem *sem) |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
189 { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
190 if ( ! sem ) { |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
191 SDL_SetError("Passed a NULL sem"); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
192 return -1; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
193 } |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
194 sem->count++; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
195 RSemaphore sema; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
196 sema.SetHandle(sem->handle); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
197 sema.Signal(); |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
198 return 0; |
83018110dce8
Added initial support for EPOC/Symbian OS (thanks Hannu!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset
|
199 } |