Mercurial > sdl-ios-xcode
annotate src/thread/win32/SDL_sysmutex.c @ 641:df178851293b
Date: 28 Jun 2003 22:42:52 +0100
From: Alan Swanson
Subject: Re: [SDL] New XFree 4.3 Video Mode Patch
I have a wee amendment that moves the qsort in set_best_resolution
to only occur after failing to find an exact match only. This would
make absolutely sure we get a user set mode.
While I've never had any problems for my normal resolutions (1280x1024,
1024x768, 800x600 & 640,480) while closely examining the output from
qsort I've noticed it doesn't seem to sort the modes fully. These is
one definite wrong at 1152x768 and a few that just look wrong to me.
From a program (attached) I made to examine this more easily. X has
sorted its mode list using the same method as ours (plus frequency),
and our user modes get inserted without any other movement.
On the patch I've made I've also changed cmpmodes to sort on vertical
resolution and then horizontal. Ie vertical is now most significant
bit.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 28 Jun 2003 21:52:26 +0000 |
| parents | f6ffac90895c |
| children | b8d311d90021 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
297
f6ffac90895c
Updated copyright information for 2002
Sam Lantinga <slouken@libsdl.org>
parents:
252
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changeset
|
3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* Mutex functions using the Win32 API */ | |
| 29 | |
| 30 #include <stdio.h> | |
| 31 #include <stdlib.h> | |
| 32 #include <windows.h> | |
| 33 | |
| 34 #include "SDL_error.h" | |
| 35 #include "SDL_mutex.h" | |
| 36 | |
| 37 | |
| 38 struct SDL_mutex { | |
| 39 HANDLE id; | |
| 40 }; | |
| 41 | |
| 42 /* Create a mutex */ | |
| 43 SDL_mutex *SDL_CreateMutex(void) | |
| 44 { | |
| 45 SDL_mutex *mutex; | |
| 46 | |
| 47 /* Allocate mutex memory */ | |
| 48 mutex = (SDL_mutex *)malloc(sizeof(*mutex)); | |
| 49 if ( mutex ) { | |
| 50 /* Create the mutex, with initial value signaled */ | |
| 51 mutex->id = CreateMutex(NULL, FALSE, NULL); | |
| 52 if ( ! mutex->id ) { | |
| 53 SDL_SetError("Couldn't create mutex"); | |
| 54 free(mutex); | |
| 55 mutex = NULL; | |
| 56 } | |
| 57 } else { | |
| 58 SDL_OutOfMemory(); | |
| 59 } | |
| 60 return(mutex); | |
| 61 } | |
| 62 | |
| 63 /* Free the mutex */ | |
| 64 void SDL_DestroyMutex(SDL_mutex *mutex) | |
| 65 { | |
| 66 if ( mutex ) { | |
| 67 if ( mutex->id ) { | |
| 68 CloseHandle(mutex->id); | |
| 69 mutex->id = 0; | |
| 70 } | |
| 71 free(mutex); | |
| 72 } | |
| 73 } | |
| 74 | |
| 75 /* Lock the mutex */ | |
| 76 int SDL_mutexP(SDL_mutex *mutex) | |
| 77 { | |
| 78 if ( mutex == NULL ) { | |
| 79 SDL_SetError("Passed a NULL mutex"); | |
| 80 return -1; | |
| 81 } | |
| 82 if ( WaitForSingleObject(mutex->id, INFINITE) == WAIT_FAILED ) { | |
| 83 SDL_SetError("Couldn't wait on mutex"); | |
| 84 return -1; | |
| 85 } | |
| 86 return(0); | |
| 87 } | |
| 88 | |
| 89 /* Unlock the mutex */ | |
| 90 int SDL_mutexV(SDL_mutex *mutex) | |
| 91 { | |
| 92 if ( mutex == NULL ) { | |
| 93 SDL_SetError("Passed a NULL mutex"); | |
| 94 return -1; | |
| 95 } | |
| 96 if ( ReleaseMutex(mutex->id) == FALSE ) { | |
| 97 SDL_SetError("Couldn't release mutex"); | |
| 98 return -1; | |
| 99 } | |
| 100 return(0); | |
| 101 } |