assert.cxx

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/*
 * assert.cxx
 *
 * Assert function implementation.
 *
 * Portable Windows Library
 *
 * Copyright (c) 1993-1998 Equivalence Pty. Ltd.
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 *
 * The Original Code is Portable Windows Library.
 *
 * The Initial Developer of the Original Code is Equivalence Pty. Ltd.
 *
 * Portions are Copyright (C) 1993 Free Software Foundation, Inc.
 * All Rights Reserved.
 *
 * Contributor(s): ______________________________________.
 *
 * $Log: assert.cxx,v $
 * Revision 1.8  2000/03/27 18:20:09  craigs
 * Added the ability to get a stack dump on assert
 *
 * Revision 1.7  2000/03/21 03:09:54  craigs
 * Fixed the fix with EOF
 *
 * Revision 1.6  2000/03/20 22:59:18  craigs
 * Fixed problem with asserts generating unlimited output when input is redirected
 *
 * Revision 1.5  2000/02/18 01:49:18  craigs
 * Added VxWorks code
 *
 * Revision 1.4  1999/06/23 14:19:46  robertj
 * Fixed core dump problem with SIGINT/SIGTERM terminating process.
 *
 * Revision 1.3  1998/09/24 04:12:08  robertj
 * Added open software license.
 *
 * Revision 1.2  1998/06/17 14:47:47  robertj
 * Fixed continuous display of assert if input is from /dev/null
 *
 * Revision 1.1  1996/01/26 11:09:15  craigs
 * Initial revision
 *
 */

#include <ptlib.h>

#include <ctype.h>
#include <signal.h>

void PAssertFunc (const char * file, int line, const char * msg)

{
  PError << "Assertion fail: File " << file << ", Line " << line << endl;
  if (msg != NULL)
    PError << msg << endl;

#ifndef P_VXWORKS
  for(;;) {
    PError << "\n<A>bort, <C>ore dump, <I>gnore"
#ifdef _DEBUG
           << ", <S>tack"
#endif
           << "? " << flush;
    int c = getchar();

    switch (c) {
      case 'a' :
      case 'A' :
      case EOF :
        PError << "\nAborting.\n";
        _exit(1);

#ifdef _DEBUG
      case 's' :
      case 'S' :
        {
          PString fn  = PProcess::Current().GetFile();
          PString cmd = psprintf("/bin/echo 'where\ninfo threads%s'|gdb %s %d",
                                 ((c == 's') ? "\ndetach" : ""),
                                 (const char *)fn,
                                 getpid());
          system((const char *)cmd);
        }
        break;
#endif

      case 'c' :
      case 'C' :
        PError << "\nDumping core.\n";
        kill(getpid(), SIGABRT);

      case 'i' :
      case 'I' :
        PError << "\nIgnoring.\n";
        return;
    }
  }
#else
  exit(1);
  kill(taskIdSelf(), SIGABRT);
#endif
}

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