OpenAL32/alError.c

   1 /**
   2  * OpenAL cross platform audio library
   3  * Copyright (C) 1999-2000 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 <signal.h>
  24
  25 #include "alMain.h"
  26 #include "AL/alc.h"
  27 #include "alError.h"
  28
  29 ALboolean TrapALError = AL_FALSE;
  30
  31 ALvoid alSetError(ALCcontext *Context, ALenum errorCode)
  32 {
  33     if(TrapALError)
  34     {
  35 #ifdef _WIN32
  36         /* DebugBreak will cause an exception if there is no debugger */
  37         if(IsDebuggerPresent())
  38             DebugBreak();
  39 #elif defined(SIGTRAP)
  40         raise(SIGTRAP);
  41 #endif
  42     }
  43     CompExchangeInt(&Context->LastError, AL_NO_ERROR, errorCode);
  44 }
  45
  46 AL_API ALenum AL_APIENTRY alGetError(void)
  47 {
  48     ALCcontext *Context;
  49     ALenum errorCode;
  50
  51     Context = GetContextRef();
  52     if(!Context)
  53     {
  54         if(TrapALError)
  55         {
  56 #ifdef _WIN32
  57             if(IsDebuggerPresent())
  58                 DebugBreak();
  59 #elif defined(SIGTRAP)
  60             raise(SIGTRAP);
  61 #endif
  62         }
  63         return AL_INVALID_OPERATION;
  64     }
  65
  66     errorCode = ExchangeInt(&Context->LastError, AL_NO_ERROR);
  67
  68     ALCcontext_DecRef(Context);
  69
  70     return errorCode;
  71 }