LCOV - code coverage report
Current view: directory - mfbt - Assertions.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 8 0 0.0 %
Date: 2012-06-02 Functions: 2 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2                 :  * vim: set ts=8 sw=4 et tw=99 ft=cpp:
       3                 :  *
       4                 :  * ***** BEGIN LICENSE BLOCK *****
       5                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       6                 :  *
       7                 :  * The contents of this file are subject to the Mozilla Public License Version
       8                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       9                 :  * the License. You may obtain a copy of the License at:
      10                 :  * http://www.mozilla.org/MPL/
      11                 :  *
      12                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      13                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      14                 :  * for the specific language governing rights and limitations under the
      15                 :  * License.
      16                 :  *
      17                 :  * The Original Code is Mozilla Code.
      18                 :  *
      19                 :  * The Initial Developer of the Original Code is
      20                 :  *   The Mozilla Foundation
      21                 :  * Portions created by the Initial Developer are Copyright (C) 2012
      22                 :  * the Initial Developer. All Rights Reserved.
      23                 :  *
      24                 :  * Contributor(s):
      25                 :  *   Mike Hommey <mh@glandium.org>
      26                 :  *
      27                 :  * Alternatively, the contents of this file may be used under the terms of
      28                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      29                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      30                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      31                 :  * of those above. If you wish to allow use of your version of this file only
      32                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      33                 :  * use your version of this file under the terms of the MPL, indicate your
      34                 :  * decision by deleting the provisions above and replace them with the notice
      35                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      36                 :  * the provisions above, a recipient may use your version of this file under
      37                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      38                 :  *
      39                 :  * ***** END LICENSE BLOCK ***** */
      40                 : 
      41                 : #include "mozilla/Attributes.h"
      42                 : #include "mozilla/Types.h"
      43                 : 
      44                 : #include <cstdio>
      45                 : #include <cstdlib>
      46                 : #ifndef WIN32
      47                 : #include <signal.h>
      48                 : #endif
      49                 : 
      50                 : /* Implementations of runtime and static assertion macros for C and C++. */
      51                 : 
      52                 : extern "C" {
      53                 : 
      54                 : MOZ_EXPORT_API(void)
      55               0 : MOZ_Crash()
      56                 : {
      57                 :   /*
      58                 :    * We write 123 here so that the machine code for this function is
      59                 :    * unique. Otherwise the linker, trying to be smart, might use the
      60                 :    * same code for MOZ_Crash and for some other function. That
      61                 :    * messes up the signature in minidumps.
      62                 :    */
      63                 : 
      64                 : #if defined(WIN32)
      65                 :   /*
      66                 :    * We used to call DebugBreak() on Windows, but amazingly, it causes
      67                 :    * the MSVS 2010 debugger not to be able to recover a call stack.
      68                 :    */
      69                 :   *((volatile int *) NULL) = 123;
      70                 :   exit(3);
      71                 : #elif defined(__APPLE__)
      72                 :   /*
      73                 :    * On Mac OS X, Breakpad ignores signals. Only real Mach exceptions are
      74                 :    * trapped.
      75                 :    */
      76                 :   *((volatile int *) NULL) = 123;  /* To continue from here in GDB: "return" then "continue". */
      77                 :   raise(SIGABRT);  /* In case above statement gets nixed by the optimizer. */
      78                 : #else
      79               0 :   raise(SIGABRT);  /* To continue from here in GDB: "signal 0". */
      80                 : #endif
      81               0 : }
      82                 : 
      83                 : MOZ_EXPORT_API(void)
      84               0 : MOZ_Assert(const char* s, const char* file, int ln)
      85                 : {
      86               0 :   fprintf(stderr, "Assertion failure: %s, at %s:%d\n", s, file, ln);
      87               0 :   fflush(stderr);
      88               0 :   MOZ_Crash();
      89               0 : }
      90                 : 
      91                 : }

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