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annotate src/thread/pth/SDL_sysmutex.c @ 1338:604d73db6802

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Removed uses of stdlib.h and string.h
author Sam Lantinga <slouken@libsdl.org>
date Tue, 07 Feb 2006 09:29:18 +0000
parents 3692456e7b0f
children c71e05b4dc2e
rev   line source
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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 <pth.h>
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8
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9 #include "SDL_stdlib.h"
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10 #include "SDL_error.h"
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11 #include "SDL_mutex.h"
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12 #include "SDL_sysmutex_c.h"
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13
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14 /* Create a mutex */
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15 SDL_mutex *SDL_CreateMutex(void)
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16 {
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17 SDL_mutex *mutex;
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18
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19 /* Allocate mutex memory */
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20 mutex = (SDL_mutex *)SDL_malloc(sizeof(*mutex));
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21 if ( mutex ) {
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22 /* Create the mutex, with initial value signaled */
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23 if (!pth_mutex_init(&(mutex->mutexpth_p))) {
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24 SDL_SetError("Couldn't create mutex");
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25 SDL_free(mutex);
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26 mutex = NULL;
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27 }
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28 } else {
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29 SDL_OutOfMemory();
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30 }
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31 return(mutex);
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32 }
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33
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34 /* Free the mutex */
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35 void SDL_DestroyMutex(SDL_mutex *mutex)
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36 {
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37 if ( mutex ) {
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38 SDL_free(mutex);
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39 }
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40 }
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41
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42 /* Lock the mutex */
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43 int SDL_mutexP(SDL_mutex *mutex)
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44 {
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45 if ( mutex == NULL ) {
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46 SDL_SetError("Passed a NULL mutex");
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47 return -1;
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48 }
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49
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50 pth_mutex_acquire(&(mutex->mutexpth_p), FALSE, NULL);
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51
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52 return(0);
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53 }
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54
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55 /* Unlock the mutex */
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56 int SDL_mutexV(SDL_mutex *mutex)
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57 {
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58 if ( mutex == NULL ) {
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59 SDL_SetError("Passed a NULL mutex");
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60 return -1;
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61 }
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62
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63 pth_mutex_release(&(mutex->mutexpth_p));
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64
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65 return(0);
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66 }