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annotate src/thread/pth/SDL_sysmutex.c @ 910:4ab6d1fd028f

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Date: Sat, 26 Jun 2004 14:58:42 +0300 From: "Mike Gorchak" Subject: QNX 6.3 fixes for SDL Sam, I've added new OpenGL framework for SDL, which appeared in the new QNX version - 6.3. I've leave compatibility with previous QNX versions. And I've moved all GL specific functions to the separate module, like it done for the other platforms. SDL is now ready for the QNX 6.3 :)
author Sam Lantinga <slouken@libsdl.org>
date Sun, 18 Jul 2004 19:46:38 +0000
parents 1d74ddc90cb2
children 3692456e7b0f
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329
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1 /*
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2 * GNU pth mutexes
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3 *
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4 * Patrice Mandin
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5 */
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6
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9 #include <pth.h>
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10
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11 #include "SDL_error.h"
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12 #include "SDL_mutex.h"
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13 #include "SDL_sysmutex_c.h"
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14
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15 /* Create a mutex */
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16 SDL_mutex *SDL_CreateMutex(void)
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17 {
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18 SDL_mutex *mutex;
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19
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20 /* Allocate mutex memory */
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21 mutex = (SDL_mutex *)malloc(sizeof(*mutex));
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22 if ( mutex ) {
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23 /* Create the mutex, with initial value signaled */
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24 if (!pth_mutex_init(&(mutex->mutexpth_p))) {
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25 SDL_SetError("Couldn't create mutex");
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26 free(mutex);
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27 mutex = NULL;
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28 }
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29 } else {
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30 SDL_OutOfMemory();
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31 }
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32 return(mutex);
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33 }
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34
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35 /* Free the mutex */
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36 void SDL_DestroyMutex(SDL_mutex *mutex)
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37 {
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38 if ( mutex ) {
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39 free(mutex);
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40 }
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41 }
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42
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43 /* Lock the mutex */
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44 int SDL_mutexP(SDL_mutex *mutex)
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45 {
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46 if ( mutex == NULL ) {
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47 SDL_SetError("Passed a NULL mutex");
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48 return -1;
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49 }
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50
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51 pth_mutex_acquire(&(mutex->mutexpth_p), FALSE, NULL);
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52
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53 return(0);
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54 }
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55
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56 /* Unlock the mutex */
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57 int SDL_mutexV(SDL_mutex *mutex)
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58 {
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59 if ( mutex == NULL ) {
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60 SDL_SetError("Passed a NULL mutex");
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61 return -1;
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62 }
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63
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64 pth_mutex_release(&(mutex->mutexpth_p));
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65
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66 return(0);
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67 }