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.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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 #ifdef HAVE_WINDOWS_H
  26 #define WIN32_LEAN_AND_MEAN
  27 #include <windows.h>
  28 #endif
  29
  30 #include "alMain.h"
  31 #include "AL/alc.h"
  32 #include "alError.h"
  33
  34 ALboolean TrapALError = AL_FALSE;
  35
  36 ALvoid alSetError(ALCcontext *Context, ALenum errorCode)
  37 {
  38     ALenum curerr = AL_NO_ERROR;
  39     if(TrapALError)
  40     {
  41 #ifdef _WIN32
  42         /* DebugBreak will cause an exception if there is no debugger */
  43         if(IsDebuggerPresent())
  44             DebugBreak();
  45 #elif defined(SIGTRAP)
  46         raise(SIGTRAP);
  47 #endif
  48     }
  49     ATOMIC_COMPARE_EXCHANGE_STRONG(ALenum, &Context->LastError, &curerr, errorCode);
  50 }
  51
  52 AL_API ALenum AL_APIENTRY alGetError(void)
  53 {
  54     ALCcontext *Context;
  55     ALenum errorCode;
  56
  57     Context = GetContextRef();
  58     if(!Context)
  59     {
  60         if(TrapALError)
  61         {
  62 #ifdef _WIN32
  63             if(IsDebuggerPresent())
  64                 DebugBreak();
  65 #elif defined(SIGTRAP)
  66             raise(SIGTRAP);
  67 #endif
  68         }
  69         return AL_INVALID_OPERATION;
  70     }
  71
  72     errorCode = ATOMIC_EXCHANGE(ALenum, &Context->LastError, AL_NO_ERROR);
  73
  74     ALCcontext_DecRef(Context);
  75
  76     return errorCode;
  77 }