Mercurial > sdl-ios-xcode
annotate src/thread/win32/SDL_sysmutex.c @ 1312:c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
I batch edited these files, so please let me know if I've accidentally removed anybody's
credit here.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 01 Feb 2006 06:32:25 +0000 |
| parents | b8d311d90021 |
| children | 450721ad5436 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
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1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 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 | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
13 Lesser General Public License for more details. |
| 0 | 14 |
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1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
15 You should have received a copy of the GNU Lesser General Public |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
16 License along with this library; if not, write to the Free Software |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 /* Mutex functions using the Win32 API */ | |
| 24 | |
| 25 #include <stdio.h> | |
| 26 #include <stdlib.h> | |
| 27 #include <windows.h> | |
| 28 | |
| 29 #include "SDL_error.h" | |
| 30 #include "SDL_mutex.h" | |
| 31 | |
| 32 | |
| 33 struct SDL_mutex { | |
| 34 HANDLE id; | |
| 35 }; | |
| 36 | |
| 37 /* Create a mutex */ | |
| 38 SDL_mutex *SDL_CreateMutex(void) | |
| 39 { | |
| 40 SDL_mutex *mutex; | |
| 41 | |
| 42 /* Allocate mutex memory */ | |
| 43 mutex = (SDL_mutex *)malloc(sizeof(*mutex)); | |
| 44 if ( mutex ) { | |
| 45 /* Create the mutex, with initial value signaled */ | |
| 46 mutex->id = CreateMutex(NULL, FALSE, NULL); | |
| 47 if ( ! mutex->id ) { | |
| 48 SDL_SetError("Couldn't create mutex"); | |
| 49 free(mutex); | |
| 50 mutex = NULL; | |
| 51 } | |
| 52 } else { | |
| 53 SDL_OutOfMemory(); | |
| 54 } | |
| 55 return(mutex); | |
| 56 } | |
| 57 | |
| 58 /* Free the mutex */ | |
| 59 void SDL_DestroyMutex(SDL_mutex *mutex) | |
| 60 { | |
| 61 if ( mutex ) { | |
| 62 if ( mutex->id ) { | |
| 63 CloseHandle(mutex->id); | |
| 64 mutex->id = 0; | |
| 65 } | |
| 66 free(mutex); | |
| 67 } | |
| 68 } | |
| 69 | |
| 70 /* Lock the mutex */ | |
| 71 int SDL_mutexP(SDL_mutex *mutex) | |
| 72 { | |
| 73 if ( mutex == NULL ) { | |
| 74 SDL_SetError("Passed a NULL mutex"); | |
| 75 return -1; | |
| 76 } | |
| 77 if ( WaitForSingleObject(mutex->id, INFINITE) == WAIT_FAILED ) { | |
| 78 SDL_SetError("Couldn't wait on mutex"); | |
| 79 return -1; | |
| 80 } | |
| 81 return(0); | |
| 82 } | |
| 83 | |
| 84 /* Unlock the mutex */ | |
| 85 int SDL_mutexV(SDL_mutex *mutex) | |
| 86 { | |
| 87 if ( mutex == NULL ) { | |
| 88 SDL_SetError("Passed a NULL mutex"); | |
| 89 return -1; | |
| 90 } | |
| 91 if ( ReleaseMutex(mutex->id) == FALSE ) { | |
| 92 SDL_SetError("Couldn't release mutex"); | |
| 93 return -1; | |
| 94 } | |
| 95 return(0); | |
| 96 } |