Source code of Windows XP (NT5)
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//+----------------------------------------------------------------------------
//
// File: debugimpl.cpp
//
// Module: Network Load Balancing Service
//
// Synopsis: Provide the common functionality of ASSERT and TRACE .
// The build enviorment does not allow to have a source file from another directory
// Include the this cpp file directly.
// Another approach is to have a shared lib.
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
// Author: fengsun Created 8/3/98
//
//+----------------------------------------------------------------------------
#include "precomp.h"
#include "debug.h"
#if ( defined(DEBUG) || defined(_DEBUG) || defined (DBG))
#ifndef MB_SERVICE_NOTIFICATION
#define MB_SERVICE_NOTIFICATION 0
#endif
static long dwAssertCount = 0; // Avoid another assert while the messagebox is up
//+----------------------------------------------------------------------------
//
// Function: TraceMessage
//
// Synopsis: Output debug string
//
// Arguments: const char *pszFmt ...- Printf style arguments list
//
//
// Returns: Nothing
//
// History: fengsun Created Header 8/3/98
//
//+----------------------------------------------------------------------------
extern "C" void TraceMessageW(const TCHAR *pszFmt, ...)
{
va_list valArgs;
TCHAR szOutput[512];
va_start(valArgs,pszFmt);
wvsprintf(szOutput,pszFmt,valArgs);
va_end(valArgs);
lstrcat(szOutput,TEXT("\r\n"));
OutputDebugString(szOutput);
}
//+----------------------------------------------------------------------------
//
// Function: AssertMessage
//
// Synopsis: Popup a message box for asserting failure. Has three options:
// ignore/debug/abort.
//
// Arguments: const char *pszFile - File name
// unsigned nLine - Line number
// const char *pszMsg - Message in the dialog box
//
// Returns: Nothing
//
// History: fengsun Created Header 8/3/98
//
//+----------------------------------------------------------------------------
extern "C" void AssertMessageW(const TCHAR *pszFile, unsigned nLine, const TCHAR *pszMsg)
{
TCHAR szOutput[1024];
wsprintf(szOutput,TEXT("%s(%u) - %s\n"),pszFile,nLine,pszMsg);
OutputDebugString(szOutput);
wsprintf(szOutput,TEXT("%s(%u) - %s\n( Press Retry to debug )"),pszFile,nLine,pszMsg);
int nCode = IDIGNORE;
//
// If there is no Assertion messagebox, popup one
//
if (dwAssertCount <2 )
{
dwAssertCount++;
//
// Title format: Assertion Failed - hello.dll
//
//
// Find the base address of this module.
//
MEMORY_BASIC_INFORMATION mbi;
mbi.AllocationBase = NULL; // current process by if VirtualQuery failed
VirtualQuery(
AssertMessageW, // any pointer with in the module
&mbi,
sizeof(mbi) );
//
// Get the module filename.
//
WCHAR szFileName[MAX_PATH + 1];
szFileName[0] = L'\0'; // in case of failure
GetModuleFileNameW(
(HINSTANCE)mbi.AllocationBase,
szFileName,
MAX_PATH );
//
// Get the filename out of the full path
//
for (int i=lstrlen(szFileName);i != 0 && szFileName[i-1] != L'\\'; i--)
;
WCHAR szTitle[48];
lstrcpyW(szTitle, L"Assertion Failed - ");
lstrcpynW(&szTitle[lstrlenW(szTitle)], szFileName+i,
sizeof(szTitle)/sizeof(szTitle[0]) - lstrlenW(szTitle) -1); // there is no lstrcatn
nCode = MessageBoxEx(NULL,szOutput,szTitle,
MB_TOPMOST | MB_ICONHAND | MB_ABORTRETRYIGNORE | MB_SERVICE_NOTIFICATION,LANG_USER_DEFAULT);
dwAssertCount--;
}
if (nCode == IDIGNORE)
{
return; // ignore
}
else if (nCode == IDRETRY)
{
#ifdef _X86_
//
// break into the debugger .
// Step out of this fuction to get to your ASSERT() code
//
_asm { int 3 };
#else
DebugBreak();
#endif
return; // ignore and continue in debugger to diagnose problem
}
// else fall through and call Abort
ExitProcess((DWORD)-1);
}
//+----------------------------------------------------------------------------
//
// Function: TraceMessage
//
// Synopsis: Output debug string
//
// Arguments: const char *pszFmt ...- Printf style arguments list
//
//
// Returns: Nothing
//
// History: fengsun Created Header 8/3/98
//
//+----------------------------------------------------------------------------
extern "C" void TraceMessageA(const CHAR *pszFmt, ...)
{
va_list valArgs;
CHAR szOutput[512];
va_start(valArgs,pszFmt);
wvsprintfA(szOutput,pszFmt,valArgs);
va_end(valArgs);
lstrcatA(szOutput,("\r\n"));
OutputDebugStringA(szOutput);
}
//+----------------------------------------------------------------------------
//
// Function: AssertMessageA
//
// Synopsis: Popup a message box for asserting failure. Has three options:
// ignore/debug/abort.
//
// Arguments: const char *pszFile - File name
// unsigned nLine - Line number
// const char *pszMsg - Message in the dialog box
//
// Returns: Nothing
//
// History: fengsun Created Header 8/3/98
//
//+----------------------------------------------------------------------------
extern "C" void AssertMessageA(const CHAR *pszFile, unsigned nLine, const CHAR *pszMsg)
{
CHAR szOutput[1024];
wsprintfA(szOutput,("%s(%u) - %s\n"),pszFile,nLine,pszMsg);
OutputDebugStringA(szOutput);
wsprintfA(szOutput,("%s(%u) - %s\n( Press Retry to debug )"),pszFile,nLine,pszMsg);
int nCode = IDIGNORE;
//
// If there is no Assertion messagebox, popup one
//
if (dwAssertCount <2 )
{
dwAssertCount++;
//
// Title format: Assertion Failed - hello.dll
//
//
// Find the base address of this module.
//
MEMORY_BASIC_INFORMATION mbi;
mbi.AllocationBase = NULL; // current process by if VirtualQuery failed
VirtualQuery(
AssertMessageW, // any pointer with in the module
&mbi,
sizeof(mbi) );
//
// Get the module filename.
//
CHAR szFileName[MAX_PATH + 1];
szFileName[0] = '\0'; // in case of failure
GetModuleFileNameA(
(HINSTANCE)mbi.AllocationBase,
szFileName,
MAX_PATH );
//
// Get the filename out of the full path
//
for (int i=lstrlenA(szFileName);i != 0 && szFileName[i-1] != '\\'; i--)
;
CHAR szTitle[48];
lstrcpyA(szTitle, "Assertion Failed - ");
lstrcpynA(&szTitle[lstrlenA(szTitle)], szFileName+i,
sizeof(szTitle)/sizeof(szTitle[0]) - lstrlenA(szTitle) -1); // there is no lstrcatn
nCode = MessageBoxExA(NULL,szOutput,szTitle,
MB_TOPMOST | MB_ICONHAND | MB_ABORTRETRYIGNORE | MB_SERVICE_NOTIFICATION,LANG_USER_DEFAULT);
dwAssertCount--;
}
dwAssertCount--;
if (nCode == IDIGNORE)
{
return; // ignore
}
else if (nCode == IDRETRY)
{
#ifdef _X86_
//
// break into the debugger .
// Step out of this fuction to get to your ASSERT() code
//
_asm { int 3 };
#else
DebugBreak();
#endif
return; // ignore and continue in debugger to diagnose problem
}
// else fall through and call Abort
ExitProcess((DWORD)-1);
}
#endif //_DEBUG