Alc/alcThread.c

   1 /**
   2  * OpenAL cross platform audio library
   3  * Copyright (C) 1999-2007 by authors.
   4  * This library is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU Library General Public
   6  *  License as published by the Free Software Foundation; either
   7  *  version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *  Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  *  License along with this library; if not, write to the
  16  *  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  *  Boston, MA  02111-1307, USA.
  18  * Or go to http://www.gnu.org/copyleft/lgpl.html
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24
  25 #include "alMain.h"
  26 #include "alThunk.h"
  27
  28
  29 #ifdef _WIN32
  30
  31 typedef struct {
  32     ALuint (*func)(ALvoid*);
  33     ALvoid *ptr;
  34     HANDLE thread;
  35 } ThreadInfo;
  36
  37 static DWORD CALLBACK StarterFunc(void *ptr)
  38 {
  39     ThreadInfo *inf = (ThreadInfo*)ptr;
  40     ALint ret;
  41
  42     ret = inf->func(inf->ptr);
  43     ExitThread((DWORD)ret);
  44
  45     return (DWORD)ret;
  46 }
  47
  48 ALvoid *StartThread(ALuint (*func)(ALvoid*), ALvoid *ptr)
  49 {
  50     ThreadInfo *inf = malloc(sizeof(ThreadInfo));
  51     if(!inf) return 0;
  52
  53     inf->func = func;
  54     inf->ptr = ptr;
  55
  56     inf->thread = CreateThread(NULL, 0, StarterFunc, inf, 0, NULL);
  57     if(!inf->thread)
  58     {
  59         free(inf);
  60         return NULL;
  61     }
  62
  63     return inf;
  64 }
  65
  66 ALuint StopThread(ALvoid *thread)
  67 {
  68     ThreadInfo *inf = thread;
  69     DWORD ret = 0;
  70
  71     WaitForSingleObject(inf->thread, INFINITE);
  72     GetExitCodeThread(inf->thread, &ret);
  73
  74     free(inf);
  75
  76     return (ALuint)ret;
  77 }
  78
  79 #else
  80
  81 #include <pthread.h>
  82
  83 typedef struct {
  84     ALuint (*func)(ALvoid*);
  85     ALvoid *ptr;
  86     ALuint ret;
  87     pthread_t thread;
  88 } ThreadInfo;
  89
  90 static void *StarterFunc(void *ptr)
  91 {
  92     ThreadInfo *inf = (ThreadInfo*)ptr;
  93     inf->ret = inf->func(inf->ptr);
  94     return NULL;
  95 }
  96
  97 ALvoid *StartThread(ALuint (*func)(ALvoid*), ALvoid *ptr)
  98 {
  99     ThreadInfo *inf = malloc(sizeof(ThreadInfo));
 100     if(!inf) return NULL;
 101
 102     inf->func = func;
 103     inf->ptr = ptr;
 104     if(pthread_create(&inf->thread, NULL, StarterFunc, inf) != 0)
 105     {
 106         free(inf);
 107         return NULL;
 108     }
 109
 110     return inf;
 111 }
 112
 113 ALuint StopThread(ALvoid *thread)
 114 {
 115     ThreadInfo *inf = thread;
 116     ALuint ret;
 117
 118     pthread_join(inf->thread, NULL);
 119     ret = inf->ret;
 120
 121     free(inf);
 122
 123     return ret;
 124 }
 125
 126 #endif