676 lines
19 KiB
C
676 lines
19 KiB
C
/***
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*dbgrpt.c - Debug CRT Reporting Functions
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*
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* Copyright (c) 1988-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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*
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*Revision History:
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* 08-16-94 CFW Module created.
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* 11-28-94 CFW Change _SetCrtxxx to _CrtSetxxx.
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* 12-08-94 CFW Use non-win32 names.
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* 01-05-94 CFW Add report hook.
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* 01-11-94 CFW Report uses _snprintf, all unsigned chars.
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* 01-20-94 CFW Change unsigned chars to chars.
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* 01-24-94 CFW Name cleanup.
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* 02-09-95 CFW PMac work, _CrtDbgReport now returns 1 for debug,
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* -1 for error.
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* 02-15-95 CFW Make all CRT message boxes look alike.
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* 02-24-95 CFW Use __crtMessageBoxA.
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* 02-27-95 CFW Move GetActiveWindow/GetLastrActivePopup into
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* __crtMessageBoxA, add _CrtDbgBreak.
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* 02-28-95 CFW Fix PMac reporting.
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* 03-21-95 CFW Add _CRT_ASSERT report type, improve assert windows.
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* 04-19-95 CFW Avoid double asserts.
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* 04-25-95 CFW Add _CRTIMP to all exported functions.
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* 04-30-95 CFW "JIT" message removed.
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* 05-10-95 CFW Change Interlockedxxx to _CrtInterlockedxxx.
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* 05-24-95 CFW Change report hook scheme, make _crtAssertBusy available.
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* 06-06-95 CFW Remove _MB_SERVICE_NOTIFICATION.
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* 06-08-95 CFW Macos header changes cause warning.
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* 06-08-95 CFW Add return value parameter to report hook.
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* 06-27-95 CFW Add win32s support for debug libs.
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* 07-07-95 CFW Simplify default report mode scheme.
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* 07-19-95 CFW Use WLM debug string scheme for PMac.
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* 08-01-95 JWM PMac file output fixed.
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* 01-08-96 JWM File output now in text mode.
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* 04-22-96 JWM MAX_MSG increased from 512 to 4096.
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* 04-29-96 JWM _crtAssertBusy no longer being decremented prematurely.
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* 01-05-99 GJF Changes for 64-bit size_t.
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* 05-17-99 PML Remove all Macintosh support.
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* 03-21-01 PML Add _CrtSetReportHook2 (vs7#124998)
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* 03-28-01 PML Protect against GetModuleFileName overflow (vs7#231284)
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*
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*******************************************************************************/
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#ifdef _DEBUG
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#include <internal.h>
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#include <mtdll.h>
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#include <malloc.h>
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#include <mbstring.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <dbgint.h>
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#include <signal.h>
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#include <string.h>
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#include <awint.h>
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#include <windows.h>
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#include <errno.h>
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#define _CrtInterlockedIncrement InterlockedIncrement
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#define _CrtInterlockedDecrement InterlockedDecrement
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/*---------------------------------------------------------------------------
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*
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* Debug Reporting
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*
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--------------------------------------------------------------------------*/
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static int CrtMessageWindow(
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int,
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const char *,
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const char *,
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const char *,
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const char *
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);
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_CRT_REPORT_HOOK _pfnReportHook;
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typedef struct ReportHookNode {
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struct ReportHookNode *prev;
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struct ReportHookNode *next;
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unsigned refcount;
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_CRT_REPORT_HOOK pfnHookFunc;
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} ReportHookNode;
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ReportHookNode *_pReportHookList;
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_CRTIMP long _crtAssertBusy = -1;
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int _CrtDbgMode[_CRT_ERRCNT] = {
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_CRTDBG_MODE_DEBUG,
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_CRTDBG_MODE_WNDW,
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_CRTDBG_MODE_WNDW
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};
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_HFILE _CrtDbgFile[_CRT_ERRCNT] = { _CRTDBG_INVALID_HFILE,
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_CRTDBG_INVALID_HFILE,
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_CRTDBG_INVALID_HFILE
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};
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static const char * _CrtDbgModeMsg[_CRT_ERRCNT] = { "Warning",
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"Error",
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"Assertion Failed"
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};
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/***
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*void _CrtDebugBreak - call OS-specific debug function
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*
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*Purpose:
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* call OS-specific debug function
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*
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*Entry:
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*
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*Exit:
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*
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*Exceptions:
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*
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*******************************************************************************/
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#undef _CrtDbgBreak
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_CRTIMP void _cdecl _CrtDbgBreak(
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void
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)
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{
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DebugBreak();
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}
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/***
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*int _CrtSetReportMode - set the reporting mode for a given report type
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*
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*Purpose:
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* set the reporting mode for a given report type
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*
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*Entry:
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* int nRptType - the report type
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* int fMode - new mode for given report type
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*
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*Exit:
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* previous mode for given report type
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*
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*Exceptions:
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*
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*******************************************************************************/
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_CRTIMP int __cdecl _CrtSetReportMode(
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int nRptType,
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int fMode
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)
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{
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int oldMode;
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if (nRptType < 0 || nRptType >= _CRT_ERRCNT)
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return -1;
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if (fMode == _CRTDBG_REPORT_MODE)
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return _CrtDbgMode[nRptType];
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/* verify flags values */
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if (fMode & ~(_CRTDBG_MODE_FILE | _CRTDBG_MODE_DEBUG | _CRTDBG_MODE_WNDW))
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return -1;
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oldMode = _CrtDbgMode[nRptType];
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_CrtDbgMode[nRptType] = fMode;
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return oldMode;
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}
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/***
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*int _CrtSetReportFile - set the reporting file for a given report type
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*
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*Purpose:
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* set the reporting file for a given report type
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*
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*Entry:
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* int nRptType - the report type
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* _HFILE hFile - new file for given report type
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*
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*Exit:
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* previous file for given report type
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*
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*Exceptions:
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*
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*******************************************************************************/
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_CRTIMP _HFILE __cdecl _CrtSetReportFile(
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int nRptType,
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_HFILE hFile
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)
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{
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_HFILE oldFile;
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if (nRptType < 0 || nRptType >= _CRT_ERRCNT)
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return _CRTDBG_HFILE_ERROR;
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if (hFile == _CRTDBG_REPORT_FILE)
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return _CrtDbgFile[nRptType];
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oldFile = _CrtDbgFile[nRptType];
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if (_CRTDBG_FILE_STDOUT == hFile)
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_CrtDbgFile[nRptType] = GetStdHandle(STD_OUTPUT_HANDLE);
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else if (_CRTDBG_FILE_STDERR == hFile)
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_CrtDbgFile[nRptType] = GetStdHandle(STD_ERROR_HANDLE);
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else
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_CrtDbgFile[nRptType] = hFile;
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return oldFile;
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}
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/***
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*_CRT_REPORT_HOOK _CrtSetReportHook() - set client report hook
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*
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*Purpose:
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* set client report hook
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*
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*Entry:
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* _CRT_REPORT_HOOK pfnNewHook - new report hook
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*
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*Exit:
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* return previous hook
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*
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*Exceptions:
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*
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*******************************************************************************/
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_CRTIMP _CRT_REPORT_HOOK __cdecl _CrtSetReportHook(
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_CRT_REPORT_HOOK pfnNewHook
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)
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{
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_CRT_REPORT_HOOK pfnOldHook = _pfnReportHook;
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_pfnReportHook = pfnNewHook;
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return pfnOldHook;
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}
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/***
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*_CRT_REPORT_HOOK _CrtSetReportHook2() - configure client report hook in list
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*
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*Purpose:
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* Install or remove a client report hook from the report list. Exists
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* separately from _CrtSetReportHook because the older function doesn't
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* work well in an environment where DLLs that are loaded and unloaded
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* dynamically out of LIFO order want to install report hooks.
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*
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*Entry:
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* int mode - _CRT_RPTHOOK_INSTALL or _CRT_RPTHOOK_REMOVE
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* _CRT_REPORT_HOOK pfnNewHook - report hook to install/remove/query
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*
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*Exit:
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* Returns -1 if an error was encountered, with EINVAL or ENOMEM set,
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* else returns the reference count of pfnNewHook after the call.
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*
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*Exceptions:
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*
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*******************************************************************************/
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_CRTIMP int __cdecl _CrtSetReportHook2(
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int mode,
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_CRT_REPORT_HOOK pfnNewHook
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)
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{
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ReportHookNode *p;
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int ret;
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/* Handle invalid parameters */
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if ((mode != _CRT_RPTHOOK_INSTALL && mode != _CRT_RPTHOOK_REMOVE) ||
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pfnNewHook == NULL)
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{
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errno = EINVAL;
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return -1;
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}
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#ifdef _MT
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if (!_mtinitlocknum(_DEBUG_LOCK))
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return -1;
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_mlock(_DEBUG_LOCK);
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__try
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{
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#endif
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/* Search for new hook function to see if it's already installed */
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for (p = _pReportHookList; p != NULL; p = p->next)
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if (p->pfnHookFunc == pfnNewHook)
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break;
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if (mode == _CRT_RPTHOOK_REMOVE)
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{
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/* Remove request - free list node if refcount goes to zero */
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if (p != NULL)
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{
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if ((ret = --p->refcount) == 0)
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{
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if (p->next)
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p->next->prev = p->prev;
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if (p->prev)
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p->prev->next = p->next;
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else
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_pReportHookList = p->next;
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_free_crt(p);
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}
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}
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else
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{
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ret = -1;
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errno = EINVAL;
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}
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}
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else
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{
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/* Insert request */
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if (p != NULL)
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{
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/* Hook function already registered, move to head of list */
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ret = ++p->refcount;
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if (p != _pReportHookList)
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{
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if (p->next)
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p->next->prev = p->prev;
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p->prev->next = p->next;
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p->prev = NULL;
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p->next = _pReportHookList;
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_pReportHookList->prev = p;
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_pReportHookList = p;
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}
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}
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else
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{
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/* Hook function not already registered, insert new node */
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p = (ReportHookNode *)_malloc_crt(sizeof(ReportHookNode));
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if (p == NULL)
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{
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ret = -1;
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errno = ENOMEM;
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}
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else
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{
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p->prev = NULL;
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p->next = _pReportHookList;
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if (_pReportHookList)
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_pReportHookList->prev = p;
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ret = p->refcount = 1;
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p->pfnHookFunc = pfnNewHook;
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_pReportHookList = p;
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}
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}
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}
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#ifdef _MT
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}
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__finally {
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_munlock(_DEBUG_LOCK);
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}
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#endif
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return ret;
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}
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#define MAXLINELEN 64
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#define MAX_MSG 4096
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#define TOOLONGMSG "_CrtDbgReport: String too long or IO Error"
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/***
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*int _CrtDbgReport() - primary reporting function
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*
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*Purpose:
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* Display a message window with the following format.
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*
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* ================= Microsft Visual C++ Debug Library ================
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*
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* {Warning! | Error! | Assertion Failed!}
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*
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* Program: c:\test\mytest\foo.exe
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* [Module: c:\test\mytest\bar.dll]
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* [File: c:\test\mytest\bar.c]
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* [Line: 69]
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*
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* {<warning or error message> | Expression: <expression>}
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*
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* [For information on how your program can cause an assertion
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* failure, see the Visual C++ documentation on asserts]
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*
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* (Press Retry to debug the application)
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*
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* ===================================================================
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*
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*Entry:
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* int nRptType - report type
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* const char * szFile - file name
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* int nLine - line number
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* const char * szModule - module name
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* const char * szFormat - format string
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* ... - var args
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*
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*Exit:
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* if (MessageBox)
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* {
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* Abort -> aborts
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* Retry -> return TRUE
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* Ignore-> return FALSE
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* }
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* else
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* return FALSE
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*
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*Exceptions:
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*
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*******************************************************************************/
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_CRTIMP int __cdecl _CrtDbgReport(
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int nRptType,
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const char * szFile,
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int nLine,
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const char * szModule,
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const char * szFormat,
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...
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)
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{
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int retval;
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va_list arglist;
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char szLineMessage[MAX_MSG] = {0};
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char szOutMessage[MAX_MSG] = {0};
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char szUserMessage[MAX_MSG] = {0};
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#define ASSERTINTRO1 "Assertion failed: "
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#define ASSERTINTRO2 "Assertion failed!"
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va_start(arglist, szFormat);
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if (nRptType < 0 || nRptType >= _CRT_ERRCNT)
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return -1;
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/*
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* handle the (hopefully rare) case of
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*
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* 1) ASSERT while already dealing with an ASSERT
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* or
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* 2) two threads asserting at the same time
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*/
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if (_CRT_ASSERT == nRptType && _CrtInterlockedIncrement(&_crtAssertBusy) > 0)
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{
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/* use only 'safe' functions -- must not assert in here! */
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static int (APIENTRY *pfnwsprintfA)(LPSTR, LPCSTR, ...) = NULL;
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if (NULL == pfnwsprintfA)
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{
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HANDLE hlib = LoadLibrary("user32.dll");
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if (NULL == hlib || NULL == (pfnwsprintfA =
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(int (APIENTRY *)(LPSTR, LPCSTR, ...))
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GetProcAddress(hlib, "wsprintfA")))
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return -1;
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}
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(*pfnwsprintfA)( szOutMessage,
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"Second Chance Assertion Failed: File %s, Line %d\n",
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szFile, nLine);
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OutputDebugString(szOutMessage);
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_CrtInterlockedDecrement(&_crtAssertBusy);
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_CrtDbgBreak();
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return -1;
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}
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if (szFormat && _vsnprintf(szUserMessage,
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MAX_MSG-max(sizeof(ASSERTINTRO1),sizeof(ASSERTINTRO2)),
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szFormat,
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arglist) < 0)
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strcpy(szUserMessage, TOOLONGMSG);
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if (_CRT_ASSERT == nRptType)
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strcpy(szLineMessage, szFormat ? ASSERTINTRO1 : ASSERTINTRO2);
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strcat(szLineMessage, szUserMessage);
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if (_CRT_ASSERT == nRptType)
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{
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if (_CrtDbgMode[nRptType] & _CRTDBG_MODE_FILE)
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strcat(szLineMessage, "\r");
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strcat(szLineMessage, "\n");
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}
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if (szFile)
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{
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if (_snprintf(szOutMessage, MAX_MSG, "%s(%d) : %s",
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szFile, nLine, szLineMessage) < 0)
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strcpy(szOutMessage, TOOLONGMSG);
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}
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else
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strcpy(szOutMessage, szLineMessage);
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/* User hook may handle report. Check Hook2 list first */
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if (_pReportHookList)
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{
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ReportHookNode *pnode;
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#ifdef _MT
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_mlock(_DEBUG_LOCK);
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__try
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{
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#endif
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for (pnode = _pReportHookList; pnode; pnode = pnode->next)
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{
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if ((*pnode->pfnHookFunc)(nRptType, szOutMessage, &retval))
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{
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if (_CRT_ASSERT == nRptType)
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_CrtInterlockedDecrement(&_crtAssertBusy);
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return retval;
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}
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}
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#ifdef _MT
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}
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__finally {
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_munlock(_DEBUG_LOCK);
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}
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#endif
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}
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if (_pfnReportHook)
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{
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if ((*_pfnReportHook)(nRptType, szOutMessage, &retval))
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{
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if (_CRT_ASSERT == nRptType)
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_CrtInterlockedDecrement(&_crtAssertBusy);
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return retval;
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}
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}
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if (_CrtDbgMode[nRptType] & _CRTDBG_MODE_FILE)
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{
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if (_CrtDbgFile[nRptType] != _CRTDBG_INVALID_HFILE)
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{
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DWORD written;
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WriteFile(_CrtDbgFile[nRptType], szOutMessage, (unsigned long)strlen(szOutMessage), &written, NULL);
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}
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}
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if (_CrtDbgMode[nRptType] & _CRTDBG_MODE_DEBUG)
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{
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OutputDebugString(szOutMessage);
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}
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if (_CrtDbgMode[nRptType] & _CRTDBG_MODE_WNDW)
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{
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char szLine[20];
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retval = CrtMessageWindow(nRptType, szFile, nLine ? _itoa(nLine, szLine, 10) : NULL, szModule, szUserMessage);
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if (_CRT_ASSERT == nRptType)
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_CrtInterlockedDecrement(&_crtAssertBusy);
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return retval;
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}
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if (_CRT_ASSERT == nRptType)
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_CrtInterlockedDecrement(&_crtAssertBusy);
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/* ignore */
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return FALSE;
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}
|
|
|
|
|
|
/***
|
|
*static int CrtMessageWindow() - report to a message window
|
|
*
|
|
*Purpose:
|
|
* put report into message window, allow user to choose action to take
|
|
*
|
|
*Entry:
|
|
* int nRptType - report type
|
|
* const char * szFile - file name
|
|
* const char * szLine - line number
|
|
* const char * szModule - module name
|
|
* const char * szUserMessage - user message
|
|
*
|
|
*Exit:
|
|
* if (MessageBox)
|
|
* {
|
|
* Abort -> aborts
|
|
* Retry -> return TRUE
|
|
* Ignore-> return FALSE
|
|
* }
|
|
* else
|
|
* return FALSE
|
|
*
|
|
*Exceptions:
|
|
*
|
|
*******************************************************************************/
|
|
|
|
static int CrtMessageWindow(
|
|
int nRptType,
|
|
const char * szFile,
|
|
const char * szLine,
|
|
const char * szModule,
|
|
const char * szUserMessage
|
|
)
|
|
{
|
|
int nCode;
|
|
char *szShortProgName;
|
|
char *szShortModuleName;
|
|
char szExeName[MAX_PATH + 1];
|
|
char szOutMessage[MAX_MSG];
|
|
|
|
_ASSERTE(szUserMessage != NULL);
|
|
|
|
/* Shorten program name */
|
|
szExeName[MAX_PATH] = '\0';
|
|
if (!GetModuleFileName(NULL, szExeName, MAX_PATH))
|
|
strcpy(szExeName, "<program name unknown>");
|
|
|
|
szShortProgName = szExeName;
|
|
|
|
if (strlen(szShortProgName) > MAXLINELEN)
|
|
{
|
|
szShortProgName += strlen(szShortProgName) - MAXLINELEN;
|
|
strncpy(szShortProgName, "...", 3);
|
|
}
|
|
|
|
/* Shorten module name */
|
|
szShortModuleName = (char *) szModule;
|
|
|
|
if (szShortModuleName && strlen(szShortModuleName) > MAXLINELEN)
|
|
{
|
|
szShortModuleName += strlen(szShortModuleName) - MAXLINELEN;
|
|
strncpy(szShortModuleName, "...", 3);
|
|
}
|
|
|
|
if (_snprintf(szOutMessage, MAX_MSG,
|
|
"Debug %s!\n\nProgram: %s%s%s%s%s%s%s%s%s%s%s"
|
|
"\n\n(Press Retry to debug the application)",
|
|
_CrtDbgModeMsg[nRptType],
|
|
szShortProgName,
|
|
szShortModuleName ? "\nModule: " : "",
|
|
szShortModuleName ? szShortModuleName : "",
|
|
szFile ? "\nFile: " : "",
|
|
szFile ? szFile : "",
|
|
szLine ? "\nLine: " : "",
|
|
szLine ? szLine : "",
|
|
szUserMessage[0] ? "\n\n" : "",
|
|
szUserMessage[0] && _CRT_ASSERT == nRptType ? "Expression: " : "",
|
|
szUserMessage[0] ? szUserMessage : "",
|
|
_CRT_ASSERT == nRptType ?
|
|
"\n\nFor information on how your program can cause an assertion"
|
|
"\nfailure, see the Visual C++ documentation on asserts."
|
|
: "") < 0)
|
|
strcpy(szOutMessage, TOOLONGMSG);
|
|
|
|
/* Report the warning/error */
|
|
nCode = __crtMessageBoxA(szOutMessage,
|
|
"Microsoft Visual C++ Debug Library",
|
|
MB_TASKMODAL|MB_ICONHAND|MB_ABORTRETRYIGNORE|MB_SETFOREGROUND);
|
|
|
|
/* Abort: abort the program */
|
|
if (IDABORT == nCode)
|
|
{
|
|
/* raise abort signal */
|
|
raise(SIGABRT);
|
|
|
|
/* We usually won't get here, but it's possible that
|
|
SIGABRT was ignored. So exit the program anyway. */
|
|
|
|
_exit(3);
|
|
}
|
|
|
|
/* Retry: return 1 to call the debugger */
|
|
if (IDRETRY == nCode)
|
|
return 1;
|
|
|
|
/* Ignore: continue execution */
|
|
return 0;
|
|
}
|
|
|
|
#endif /* _DEBUG */
|
|
|