Mercurial > sdl-ios-xcode
annotate src/thread/win32/SDL_sysmutex.c @ 1358:c71e05b4dc2e
More header massaging... works great on Windows. ;-)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 10 Feb 2006 06:48:43 +0000 |
| parents | 604d73db6802 |
| children | d910939febfa |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
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Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
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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
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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 | |
|
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Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
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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
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 /* Mutex functions using the Win32 API */ | |
| 24 | |
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It's now possible to build SDL without any C runtime at all on Windows,
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parents:
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25 #include "SDL_windows.h" |
| 0 | 26 |
| 27 #include "SDL_mutex.h" | |
| 28 | |
| 29 | |
| 30 struct SDL_mutex { | |
| 31 HANDLE id; | |
| 32 }; | |
| 33 | |
| 34 /* Create a mutex */ | |
| 35 SDL_mutex *SDL_CreateMutex(void) | |
| 36 { | |
| 37 SDL_mutex *mutex; | |
| 38 | |
| 39 /* Allocate mutex memory */ | |
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Use SDL_ prefixed versions of C library functions.
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40 mutex = (SDL_mutex *)SDL_malloc(sizeof(*mutex)); |
| 0 | 41 if ( mutex ) { |
| 42 /* Create the mutex, with initial value signaled */ | |
| 43 mutex->id = CreateMutex(NULL, FALSE, NULL); | |
| 44 if ( ! mutex->id ) { | |
| 45 SDL_SetError("Couldn't create mutex"); | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
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46 SDL_free(mutex); |
| 0 | 47 mutex = NULL; |
| 48 } | |
| 49 } else { | |
| 50 SDL_OutOfMemory(); | |
| 51 } | |
| 52 return(mutex); | |
| 53 } | |
| 54 | |
| 55 /* Free the mutex */ | |
| 56 void SDL_DestroyMutex(SDL_mutex *mutex) | |
| 57 { | |
| 58 if ( mutex ) { | |
| 59 if ( mutex->id ) { | |
| 60 CloseHandle(mutex->id); | |
| 61 mutex->id = 0; | |
| 62 } | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
63 SDL_free(mutex); |
| 0 | 64 } |
| 65 } | |
| 66 | |
| 67 /* Lock the mutex */ | |
| 68 int SDL_mutexP(SDL_mutex *mutex) | |
| 69 { | |
| 70 if ( mutex == NULL ) { | |
| 71 SDL_SetError("Passed a NULL mutex"); | |
| 72 return -1; | |
| 73 } | |
| 74 if ( WaitForSingleObject(mutex->id, INFINITE) == WAIT_FAILED ) { | |
| 75 SDL_SetError("Couldn't wait on mutex"); | |
| 76 return -1; | |
| 77 } | |
| 78 return(0); | |
| 79 } | |
| 80 | |
| 81 /* Unlock the mutex */ | |
| 82 int SDL_mutexV(SDL_mutex *mutex) | |
| 83 { | |
| 84 if ( mutex == NULL ) { | |
| 85 SDL_SetError("Passed a NULL mutex"); | |
| 86 return -1; | |
| 87 } | |
| 88 if ( ReleaseMutex(mutex->id) == FALSE ) { | |
| 89 SDL_SetError("Couldn't release mutex"); | |
| 90 return -1; | |
| 91 } | |
| 92 return(0); | |
| 93 } |