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annotate src/thread/os2/SDL_sysmutex.c @ 2268:4baee598306d

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Date: Thu, 05 Jul 2007 14:02:33 -0700 From: Sam Lantinga Subject: SDL 1.3 keyboard plan After lots of discussion with Christian, this is what we came up with: > So, to sum up... > SDLK_* become the physical keys, starting at > (1<<21) > We create a macro SDLK_INDEX(X) > We have two functions SDL_GetLayoutKey(SDLKey) and SDL_GetKeyName() > SDL_GetLayoutKey maps to UCS4 for printable characters, and SDLK* for non-printable characters > and does so based on the OS's current keyboard layout > SDL_GetKeyName() handles both SDLK_* and UCS4, converting UCS4 to UTF-8 and converting SDLK_* into our names, which are UTF-8 for printable characters. > WASD folks use SDLK_*, and 'I' folks use SDL_GetLayoutKey(SDLK_*) Here is the patch he came up with, and his e-mail about it: Date: Fri, 17 Aug 2007 19:50:28 +0200 From: Christian Walther Subject: Re: SDL 1.3 keyboard plan > Sounds great, go ahead and send me a patch. Here goes! Thanks for having a look. Don't hesitate to comment if anything does not conform to your ideas. One caveat: Committing this now may break compilability of some video drivers - specifically, if they use any of the SDLK_* codes that were obsoleted and moved into SDL_compat.h. I only tried Cocoa (which did break, but is already fixed) and X11 (which didn't, but then its key handling is #iffed out). If that's a problem, it may need to go into a branch. -Christian
author Sam Lantinga <slouken@libsdl.org>
date Sun, 19 Aug 2007 14:52:52 +0000
parents c121d94672cb
children 99210400e8b9
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* Mutex functions using the OS/2 API */
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25
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26 #define INCL_DOSERRORS
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27 #define INCL_DOSSEMAPHORES
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28 #include <os2.h>
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29
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30 #include "SDL_mutex.h"
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31
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32
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33 struct SDL_mutex
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34 {
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35 HMTX hmtxID;
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36 };
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37
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38 /* Create a mutex */
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39 DECLSPEC SDL_mutex *SDLCALL
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40 SDL_CreateMutex(void)
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41 {
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42 SDL_mutex *mutex;
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43 APIRET ulrc;
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44
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45 /* Allocate mutex memory */
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46 mutex = (SDL_mutex *) SDL_malloc(sizeof(*mutex));
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47 if (mutex) {
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48 /* Create the mutex, with initial value signaled */
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49 ulrc = DosCreateMutexSem(NULL, // Create unnamed semaphore
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50 &(mutex->hmtxID), // Pointer to handle
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51 0L, // Flags: create it private (not shared)
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52 FALSE); // Initial value: unowned
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53 if (ulrc != NO_ERROR) {
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54 SDL_SetError("Couldn't create mutex");
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55 SDL_free(mutex);
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56 mutex = NULL;
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57 }
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58 } else {
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59 SDL_OutOfMemory();
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60 }
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61 return (mutex);
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62 }
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63
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64 /* Free the mutex */
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65 DECLSPEC void SDLCALL
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66 SDL_DestroyMutex(SDL_mutex * mutex)
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67 {
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68 if (mutex) {
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69 if (mutex->hmtxID) {
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70 DosCloseMutexSem(mutex->hmtxID);
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71 mutex->hmtxID = 0;
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72 }
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73 SDL_free(mutex);
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74 }
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75 }
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76
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77 /* Lock the mutex */
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78 DECLSPEC int SDLCALL
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79 SDL_mutexP(SDL_mutex * mutex)
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80 {
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81 if (mutex == NULL) {
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82 SDL_SetError("Passed a NULL mutex");
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83 return -1;
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84 }
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85 if (DosRequestMutexSem(mutex->hmtxID, SEM_INDEFINITE_WAIT) != NO_ERROR) {
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86 SDL_SetError("Couldn't wait on mutex");
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87 return -1;
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88 }
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89 return (0);
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90 }
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91
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92 /* Unlock the mutex */
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93 DECLSPEC int SDLCALL
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94 SDL_mutexV(SDL_mutex * mutex)
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95 {
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96 if (mutex == NULL) {
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97 SDL_SetError("Passed a NULL mutex");
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98 return -1;
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99 }
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100 if (DosReleaseMutexSem(mutex->hmtxID) != NO_ERROR) {
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101 SDL_SetError("Couldn't release mutex");
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102 return -1;
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103 }
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104 return (0);
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105 }
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106
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107 /* vi: set ts=4 sw=4 expandtab: */