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 #include <windows.h>
  32
  33 typedef struct {
  34     ALuint (*func)(ALvoid*);
  35     ALvoid *ptr;
  36     HANDLE thread;
  37 } ThreadInfo;
  38
  39 static DWORD CALLBACK StarterFunc(void *ptr)
  40 {
  41     ThreadInfo *inf = (ThreadInfo*)ptr;
  42     ALint ret;
  43
  44     ret = inf->func(inf->ptr);
  45     ExitThread((DWORD)ret);
  46
  47     return (DWORD)ret;
  48 }
  49
  50 ALvoid *StartThread(ALuint (*func)(ALvoid*), ALvoid *ptr)
  51 {
  52     ThreadInfo *inf = malloc(sizeof(ThreadInfo));
  53     if(!inf) return 0;
  54
  55     inf->func = func;
  56     inf->ptr = ptr;
  57
  58     inf->thread = CreateThread(NULL, 0, StarterFunc, inf, 0, NULL);
  59     if(!inf->thread)
  60     {
  61         free(inf);
  62         return NULL;
  63     }
  64
  65     return inf;
  66 }
  67
  68 ALuint StopThread(ALvoid *thread)
  69 {
  70     ThreadInfo *inf = thread;
  71     DWORD ret = 0;
  72
  73     WaitForSingleObject(inf->thread, INFINITE);
  74     GetExitCodeThread(inf->thread, &ret);
  75
  76     free(inf);
  77
  78     return (ALuint)ret;
  79 }
  80
  81 #else
  82
  83 #include <pthread.h>
  84
  85 typedef struct {
  86     ALuint (*func)(ALvoid*);
  87     ALvoid *ptr;
  88     pthread_t thread;
  89 } ThreadInfo;
  90
  91 static void *StarterFunc(void *ptr)
  92 {
  93     ThreadInfo *inf = (ThreadInfo*)ptr;
  94     ALint ret;
  95
  96     ret = inf->func(inf->ptr);
  97     return (void*)ret;
  98 }
  99
 100 ALvoid *StartThread(ALuint (*func)(ALvoid*), ALvoid *ptr)
 101 {
 102     ThreadInfo *inf = malloc(sizeof(ThreadInfo));
 103     if(!inf) return 0;
 104
 105     inf->func = func;
 106     inf->ptr = ptr;
 107     if(pthread_create(&inf->thread, NULL, StarterFunc, inf) != 0)
 108     {
 109         free(inf);
 110         return NULL;
 111     }
 112
 113     return inf;
 114 }
 115
 116 ALuint StopThread(ALvoid *thread)
 117 {
 118     ThreadInfo *inf = thread;
 119     void *ret;
 120
 121     pthread_join(inf->thread, &ret);
 122     free(inf);
 123
 124     return (ALuint)ret;
 125 }
 126
 127 #endif