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     DWORD dummy;
  51     ThreadInfo *inf = malloc(sizeof(ThreadInfo));
  52     if(!inf) return 0;
  53
  54     inf->func = func;
  55     inf->ptr = ptr;
  56
  57     inf->thread = CreateThread(NULL, 0, StarterFunc, inf, 0, &dummy);
  58     if(!inf->thread)
  59     {
  60         free(inf);
  61         return NULL;
  62     }
  63
  64     return inf;
  65 }
  66
  67 ALuint StopThread(ALvoid *thread)
  68 {
  69     ThreadInfo *inf = thread;
  70     DWORD ret = 0;
  71
  72     WaitForSingleObject(inf->thread, INFINITE);
  73     GetExitCodeThread(inf->thread, &ret);
  74     CloseHandle(inf->thread);
  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     ALuint ret;
  89     pthread_t thread;
  90 } ThreadInfo;
  91
  92 static void *StarterFunc(void *ptr)
  93 {
  94     ThreadInfo *inf = (ThreadInfo*)ptr;
  95     inf->ret = inf->func(inf->ptr);
  96     return NULL;
  97 }
  98
  99 ALvoid *StartThread(ALuint (*func)(ALvoid*), ALvoid *ptr)
 100 {
 101     ThreadInfo *inf = malloc(sizeof(ThreadInfo));
 102     if(!inf) return NULL;
 103
 104     inf->func = func;
 105     inf->ptr = ptr;
 106     if(pthread_create(&inf->thread, NULL, StarterFunc, inf) != 0)
 107     {
 108         free(inf);
 109         return NULL;
 110     }
 111
 112     return inf;
 113 }
 114
 115 ALuint StopThread(ALvoid *thread)
 116 {
 117     ThreadInfo *inf = thread;
 118     ALuint ret;
 119
 120     pthread_join(inf->thread, NULL);
 121     ret = inf->ret;
 122
 123     free(inf);
 124
 125     return ret;
 126 }
 127
 128 #endif