mirror of
https://github.com/mozilla/gecko-dev.git
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535 lines
15 KiB
C++
535 lines
15 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* This Original Code has been modified by IBM Corporation. Modifications made by IBM
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* described herein are Copyright (c) International Business Machines Corporation, 2000.
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* Modifications to Mozilla code or documentation identified per MPL Section 3.3
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*
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* Date Modified by Description of modification
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* 04/10/2000 IBM Corp. Added DebugBreak() definitions for OS/2
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* 06/19/2000 IBM Corp. Fix DebugBreak() messagebox defaults for OS/2
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* 06/19/2000 Henry Sobotka Fix DebugBreak() for OS/2 on retail build.
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*/
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#include "nsDebug.h"
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#include "prprf.h"
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#include "prlog.h"
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#include "prinit.h"
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#include "plstr.h"
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#include "nsError.h"
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#include "prerror.h"
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#include "prerr.h"
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#if defined(XP_BEOS)
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/* For DEBUGGER macros */
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#include <Debug.h>
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#endif
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#if defined(XP_UNIX) || defined(_WIN32) || defined(XP_OS2) || defined(XP_BEOS)
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/* for abort() and getenv() */
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#include <stdlib.h>
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#endif
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#if defined(XP_UNIX) && !defined(UNIX_CRASH_ON_ASSERT)
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#include <signal.h>
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/* for nsTraceRefcnt::WalkTheStack() */
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#include "nsISupportsUtils.h"
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#include "nsTraceRefcnt.h"
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#if defined(linux) && defined(__i386)
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# define DebugBreak() { asm("int $3"); }
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#else
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# define DebugBreak()
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#endif
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#endif
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#if defined(XP_OS2)
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/* Added definitions for DebugBreak() for 2 different OS/2 compilers. Doing
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* the int3 on purpose for Visual Age so that a developer can step over the
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* instruction if so desired. Not always possible if trapping due to exception
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* handling IBM-AKR
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*/
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#define INCL_WINDIALOGS // need for WinMessageBox
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#include <os2.h>
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#if defined(DEBUG)
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#if defined(XP_OS2_VACPP)
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#include <builtin.h>
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#define DebugBreak() { _interrupt(3); }
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#elif defined(XP_OS2_EMX)
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/* Force a trap */
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#define DebugBreak() { int *pTrap=NULL; *pTrap = 1; }
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#else
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#define DebugBreak()
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#endif
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#else
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#define DebugBreak()
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#endif /* DEBUG */
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#endif /* XP_OS2 */
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#if defined(_WIN32)
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#include <windows.h>
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#include <signal.h>
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#elif defined(XP_MAC)
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#define TEMP_MAC_HACK
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//------------------------
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#ifdef TEMP_MAC_HACK
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#include <MacTypes.h>
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#include <Processes.h>
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#include <string.h>
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// TEMPORARY UNTIL WE HAVE MACINTOSH ENVIRONMENT VARIABLES THAT CAN TURN ON
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// LOGGING ON MACINTOSH
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// At this moment, NSPR's logging is a no-op on Macintosh.
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#include <stdarg.h>
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#include <stdio.h>
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#undef PR_LOG
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#undef PR_LogFlush
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#define PR_LOG(module,level,args) dprintf args
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#define PR_LogFlush()
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static void dprintf(const char *format, ...)
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{
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va_list ap;
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Str255 buffer;
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va_start(ap, format);
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buffer[0] = std::vsnprintf((char *)buffer + 1, sizeof(buffer) - 1, format, ap);
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va_end(ap);
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if (PL_strcasestr((char *)&buffer[1], "warning"))
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printf("<EFBFBD><EFBFBD><EFBFBD>%s\n", (char*)buffer + 1);
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else
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DebugStr(buffer);
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}
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#endif // TEMP_MAC_HACK
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//------------------------
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#elif defined(XP_UNIX)
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#include<stdlib.h>
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#endif
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/**
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* Define output so users will always see it
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*/
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#if defined(XP_UNIX) || defined(_WIN32)
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#define DBG_LOG(log,err,pargs) \
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InitLog(); \
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PR_LOG(log,err,pargs); \
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PR_LogFlush(); \
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printf pargs; putchar('\n');
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#else
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#define DBG_LOG(log,err,pargs) \
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InitLog(); \
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PR_LOG(log,err,pargs); \
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PR_LogFlush();
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#endif
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/*
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* Determine if debugger is present in windows.
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*/
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#if defined (_WIN32)
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typedef WINBASEAPI BOOL (WINAPI* LPFNISDEBUGGERPRESENT)();
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PRBool InDebugger()
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{
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PRBool fReturn = PR_FALSE;
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LPFNISDEBUGGERPRESENT lpfnIsDebuggerPresent = NULL;
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HINSTANCE hKernel = LoadLibrary("Kernel32.dll");
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if(hKernel)
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{
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lpfnIsDebuggerPresent =
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(LPFNISDEBUGGERPRESENT)GetProcAddress(hKernel, "IsDebuggerPresent");
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if(lpfnIsDebuggerPresent)
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{
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fReturn = (*lpfnIsDebuggerPresent)();
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}
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FreeLibrary(hKernel);
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}
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return fReturn;
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}
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#endif /* WIN32*/
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/**
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* Implementation of the nsDebug methods. Note that this code is
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* always compiled in, in case some other module that uses it is
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* compiled with debugging even if this library is not.
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*/
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static PRLogModuleInfo* gDebugLog;
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static void InitLog(void)
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{
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if (0 == gDebugLog) {
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gDebugLog = PR_NewLogModule("nsDebug");
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gDebugLog->level = PR_LOG_DEBUG;
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}
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}
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NS_COM void nsDebug::Assertion(const char* aStr, const char* aExpr,
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const char* aFile, PRIntn aLine)
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{
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InitLog();
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char buf[1000];
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PR_snprintf(buf, sizeof(buf),
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"###!!! ASSERTION: %s: '%s', file %s, line %d",
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aStr, aExpr, aFile, aLine);
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// Write out the assertion message to the debug log
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PR_LOG(gDebugLog, PR_LOG_ERROR, ("%s", buf));
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PR_LogFlush();
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// And write it out to the stdout
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printf("%s\n", buf);
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fflush(stdout);
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#if defined(_WIN32)
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char* assertBehavior = getenv("XPCOM_DEBUG_BREAK");
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if (assertBehavior && PL_strcmp(assertBehavior, "warn") == 0)
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return;
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if(!InDebugger())
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{
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DWORD code = IDRETRY;
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/* Create the debug dialog out of process to avoid the crashes caused by
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* Windows events leaking into our event loop from an in process dialog.
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* We do this by launching windbgdlg.exe (built in xpcom/windbgdlg).
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* See http://bugzilla.mozilla.org/show_bug.cgi?id=54792
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*/
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PROCESS_INFORMATION pi;
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STARTUPINFO si;
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char executable[MAX_PATH];
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char* pName;
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memset(&pi, 0, sizeof(pi));
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memset(&si, 0, sizeof(si));
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si.cb = sizeof(si);
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si.wShowWindow = SW_SHOW;
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if(GetModuleFileName(NULL, executable, MAX_PATH) &&
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NULL != (pName = strrchr(executable, '\\')) &&
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NULL != strcpy(pName+1, "windbgdlg.exe") &&
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#ifdef DEBUG_jband
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(printf("Launching %s\n", executable), PR_TRUE) &&
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#endif
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CreateProcess(executable, buf, NULL, NULL, PR_FALSE,
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DETACHED_PROCESS | NORMAL_PRIORITY_CLASS,
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NULL, NULL, &si, &pi) &&
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WAIT_OBJECT_0 == WaitForSingleObject(pi.hProcess, INFINITE) &&
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GetExitCodeProcess(pi.hProcess, &code))
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{
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CloseHandle(pi.hProcess);
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}
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switch(code)
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{
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case IDABORT:
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//This should exit us
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raise(SIGABRT);
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//If we are ignored exit this way..
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_exit(3);
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break;
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case IDIGNORE:
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return;
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// Fall Through
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}
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}
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#endif
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#if defined(XP_OS2)
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char msg[1200];
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PR_snprintf(msg, sizeof(msg),
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"%s\n\nClick Cancel to Debug Application.\n"
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"Click Enter to continue running the Application.", buf);
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ULONG code = WinMessageBox(HWND_DESKTOP, HWND_DESKTOP, msg,
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"nsDebug::Assertion", 0,
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MB_ERROR | MB_ENTERCANCEL);
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/* It is possible that we are executing on a thread that doesn't have a
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* message queue. In that case, the message won't appear, and code will
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* be 0xFFFF. We'll give the user a chance to debug it by calling
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* Break()
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* Actually, that's a really bad idea since this happens a lot with threadsafe
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* assertions and since it means that you can't actually run the debug build
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* outside a debugger without it crashing constantly.
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*/
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if(( code == MBID_ENTER ) || (code == MBID_ERROR))
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{
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return;
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// If Retry, Fall Through
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}
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#endif
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Break(aFile, aLine);
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}
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NS_COM void nsDebug::Break(const char* aFile, PRIntn aLine)
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{
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#ifndef TEMP_MAC_HACK
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DBG_LOG(gDebugLog, PR_LOG_ERROR,
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("###!!! Break: at file %s, line %d", aFile, aLine));
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#if defined(_WIN32)
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#ifdef _M_IX86
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::DebugBreak();
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#else /* _M_ALPHA */
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fprintf(stderr, "Break: at file %s\n",aFile, aLine); fflush(stderr);
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#endif
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#elif defined(XP_UNIX) && !defined(UNIX_CRASH_ON_ASSERT)
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fprintf(stderr, "\07");
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char *assertBehavior = getenv("XPCOM_DEBUG_BREAK");
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if (!assertBehavior) {
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// the default; nothing else to do
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;
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} else if ( strcmp(assertBehavior, "suspend")== 0 ) {
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// the suspend case is first because we wanna send the signal before
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// other threads have had a chance to get too far from the state that
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// caused this assertion (in case they happen to have been involved).
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//
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fprintf(stderr, "Suspending process; attach with the debugger.\n");
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kill(0, SIGSTOP);
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} else if ( strcmp(assertBehavior, "warn")==0 ) {
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// same as default; nothing else to do (see "suspend" case comment for
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// why this compare isn't done as part of the default case)
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//
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;
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} else if ( strcmp(assertBehavior,"stack")==0 ) {
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// walk the stack
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//
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nsTraceRefcnt::WalkTheStack(stderr);
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} else if ( strcmp(assertBehavior,"abort")==0 ) {
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// same as UNIX_CRASH_ON_ASSERT
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//
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Abort(aFile, aLine);
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} else if ( strcmp(assertBehavior,"trap")==0 ) {
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DebugBreak();
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} else {
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fprintf(stderr, "unrecognized value of XPCOM_DEBUG_BREAK env var!\n");
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}
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fflush(stderr); // this shouldn't really be necessary, i don't think,
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// but maybe there's some lame stdio that buffers stderr
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#elif defined(XP_BEOS)
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{
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#ifdef UNIX_CRASH_ON_ASSERT
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char buf[2000];
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sprintf(buf, "Break: at file %s, line %d", aFile, aLine);
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DEBUGGER(buf);
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#endif
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}
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#else
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Abort(aFile, aLine);
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#endif
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#endif // TEMP_MAC_HACK
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}
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NS_COM void nsDebug::Warning(const char* aMessage,
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const char* aFile, PRIntn aLine)
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{
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InitLog();
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char buf[1000];
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PR_snprintf(buf, sizeof(buf),
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"WARNING: %s, file %s, line %d",
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aMessage, aFile, aLine);
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// Write out the warning message to the debug log
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PR_LOG(gDebugLog, PR_LOG_ERROR, ("%s", buf));
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// And write it out to the stdout
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printf("%s\n", buf);
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}
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//**************** All Dead Code Below
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// Don't use these!
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NS_COM void nsDebug::AbortIfFalse(const char* aStr, const char* aExpr,
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const char* aFile, PRIntn aLine)
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{
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Assertion(aStr, aExpr, aFile, aLine);
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}
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NS_COM PRBool nsDebug::WarnIfFalse(const char* aStr, const char* aExpr,
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const char* aFile, PRIntn aLine)
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{
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Assertion(aStr, aExpr, aFile, aLine);
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return PR_TRUE;
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}
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NS_COM void nsDebug::Abort(const char* aFile, PRIntn aLine)
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{
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DBG_LOG(gDebugLog, PR_LOG_ERROR,
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("###!!! Abort: at file %s, line %d", aFile, aLine));
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#if defined(_WIN32)
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#ifdef _M_IX86
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long* __p = (long*) 0x7;
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*__p = 0x7;
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#else /* _M_ALPHA */
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fprintf(stderr, "\07 Abort\n"); fflush(stderr);
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PR_Abort();
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#endif
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#elif defined(XP_MAC)
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ExitToShell();
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#elif defined(XP_UNIX)
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PR_Abort();
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#elif defined(XP_OS2)
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DebugBreak();
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return;
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#elif defined(XP_BEOS)
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{
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#ifndef DEBUG_cls
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char buf[2000];
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sprintf(buf, "Abort: at file %s, line %d", aFile, aLine);
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DEBUGGER(buf);
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#endif
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}
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#endif
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}
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NS_COM void nsDebug::PreCondition(const char* aStr, const char* aExpr,
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const char* aFile, PRIntn aLine)
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{
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Assertion(aStr, aExpr, aFile, aLine);
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}
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NS_COM void nsDebug::PostCondition(const char* aStr, const char* aExpr,
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const char* aFile, PRIntn aLine)
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{
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Assertion(aStr, aExpr, aFile, aLine);
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}
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NS_COM void nsDebug::NotYetImplemented(const char* aMessage,
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const char* aFile, PRIntn aLine)
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{
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Assertion(aMessage, "NotYetImplemented", aFile, aLine);
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}
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NS_COM void nsDebug::NotReached(const char* aMessage,
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const char* aFile, PRIntn aLine)
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{
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Assertion(aMessage, "Not Reached", aFile, aLine);
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}
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NS_COM void nsDebug::Error(const char* aMessage,
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const char* aFile, PRIntn aLine)
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{
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Assertion(aMessage, "Error", aFile, aLine);
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}
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////////////////////////////////////////////////////////////////////////////////
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NS_COM nsresult
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NS_ErrorAccordingToNSPR()
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{
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PRErrorCode err = PR_GetError();
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switch (err) {
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case PR_OUT_OF_MEMORY_ERROR: return NS_ERROR_OUT_OF_MEMORY;
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case PR_WOULD_BLOCK_ERROR: return NS_BASE_STREAM_WOULD_BLOCK;
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case PR_FILE_NOT_FOUND_ERROR: return NS_ERROR_FILE_NOT_FOUND;
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case PR_READ_ONLY_FILESYSTEM_ERROR: return NS_ERROR_FILE_READ_ONLY;
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case PR_NOT_DIRECTORY_ERROR: return NS_ERROR_FILE_NOT_DIRECTORY;
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case PR_IS_DIRECTORY_ERROR: return NS_ERROR_FILE_IS_DIRECTORY;
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case PR_LOOP_ERROR: return NS_ERROR_FILE_UNRESOLVABLE_SYMLINK;
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case PR_FILE_EXISTS_ERROR: return NS_ERROR_FILE_ALREADY_EXISTS;
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case PR_FILE_IS_LOCKED_ERROR: return NS_ERROR_FILE_IS_LOCKED;
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case PR_FILE_TOO_BIG_ERROR: return NS_ERROR_FILE_TOO_BIG;
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case PR_NO_DEVICE_SPACE_ERROR: return NS_ERROR_FILE_NO_DEVICE_SPACE;
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case PR_NAME_TOO_LONG_ERROR: return NS_ERROR_FILE_NAME_TOO_LONG;
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case PR_DIRECTORY_NOT_EMPTY_ERROR: return NS_ERROR_FILE_DIR_NOT_EMPTY;
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case PR_NO_ACCESS_RIGHTS_ERROR: return NS_ERROR_FILE_ACCESS_DENIED;
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default: return NS_ERROR_FAILURE;
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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// This wrapper around PR_CurrentThread is simply here for debug builds so
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// that clients linking with xpcom don't also have to link with nspr explicitly.
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#if defined(NS_DEBUG) && defined(NS_MT_SUPPORTED)
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#include "nsISupportsUtils.h"
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#include "prthread.h"
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extern "C" NS_EXPORT void* NS_CurrentThread(void);
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extern "C" NS_EXPORT void NS_CheckThreadSafe(void* owningThread, const char* msg);
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void*
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NS_CurrentThread(void)
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{
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void* th = PR_CurrentThread();
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return th;
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}
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/*
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* DON'T TOUCH THAT DIAL...
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* For now, we're making the thread-safety checking be on by default which, yes, slows
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* down linux a bit... but we're doing it so that everybody has a chance to exercise
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* their code a good deal before the beta. After we branch, we'll turn this back off
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* and then you can enable it explicitly by setting XPCOM_CHECK_THREADSAFE. This will
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* let you verify the thread-safety of your classes without impacting everyone all the
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* time.
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*/
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static PRBool gCheckThreadSafeDefault = PR_TRUE; // READ THE ABOVE COMMENT FIRST!
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|
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void
|
||
NS_CheckThreadSafe(void* owningThread, const char* msg)
|
||
{
|
||
static int check = -1;
|
||
if (check == -1) {
|
||
const char *eVar = getenv("XPCOM_CHECK_THREADSAFE");
|
||
if (eVar && *eVar == '0')
|
||
check = 0;
|
||
else
|
||
check = gCheckThreadSafeDefault || eVar != 0;
|
||
}
|
||
if (check) {
|
||
NS_ASSERTION(owningThread == NS_CurrentThread(), msg);
|
||
}
|
||
}
|
||
|
||
#endif // !(defined(NS_DEBUG) && defined(NS_MT_SUPPORTED))
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|