118 lines
3.5 KiB
C++
118 lines
3.5 KiB
C++
// Copyright (c) 1996-1999 Microsoft Corporation
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/*
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Implementation of Win95 tracing facility to mimic that of NT. Works on both.
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*/
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#pragma warning(disable:4201) // allows nameless structs and unions
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#pragma warning(disable:4514) // don't care when unreferenced inline functions are removed
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#pragma warning(disable:4706) // we are allowed to assign within a conditional
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#include "windows.h"
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#include <stdio.h>
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#include <stdarg.h>
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#include <process.h>
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#include "w95trace.h"
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#if defined( _DEBUG ) ||defined( DEBUG ) || defined( DBG )
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void OutputDebugStringW95( LPCTSTR lpOutputString, ...)
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{
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// Only produce output if this mutex is set...
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HANDLE hTestMutex = OpenMutex( SYNCHRONIZE, FALSE, TEXT("oleacc-msaa-use-dbwin") );
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if( ! hTestMutex )
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return;
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CloseHandle( hTestMutex );
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HANDLE heventDBWIN; /* DBWIN32 synchronization object */
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HANDLE heventData; /* data passing synch object */
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HANDLE hSharedFile; /* memory mapped file shared data */
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LPTSTR lpszSharedMem;
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TCHAR achBuffer[500];
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/* create the output buffer */
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va_list args;
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va_start(args, lpOutputString);
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wvsprintf(achBuffer, lpOutputString, args);
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va_end(args);
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/*
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Do a regular OutputDebugString so that the output is
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still seen in the debugger window if it exists.
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This ifdef is necessary to avoid infinite recursion
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from the inclusion of W95TRACE.H
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*/
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#ifdef UNICODE
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::OutputDebugStringW(achBuffer);
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#else
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::OutputDebugStringA(achBuffer);
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#endif
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/* bail if it's not Win95 */
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{
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OSVERSIONINFO VerInfo;
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VerInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
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GetVersionEx(&VerInfo);
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if ( VerInfo.dwPlatformId != VER_PLATFORM_WIN32_WINDOWS )
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return;
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}
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/* make sure DBWIN is open and waiting */
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heventDBWIN = OpenEvent(EVENT_MODIFY_STATE, FALSE, TEXT("DBWIN_BUFFER_READY"));
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if ( !heventDBWIN )
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{
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//MessageBox(NULL, TEXT("DBWIN_BUFFER_READY nonexistent"), NULL, MB_OK);
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return;
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}
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/* get a handle to the data synch object */
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heventData = OpenEvent(EVENT_MODIFY_STATE, FALSE, TEXT("DBWIN_DATA_READY"));
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if ( !heventData )
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{
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// MessageBox(NULL, TEXT("DBWIN_DATA_READY nonexistent"), NULL, MB_OK);
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CloseHandle(heventDBWIN);
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return;
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}
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hSharedFile = CreateFileMapping((HANDLE)-1, NULL, PAGE_READWRITE, 0, 4096, TEXT("DBWIN_BUFFER"));
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if (!hSharedFile)
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{
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//MessageBox(NULL, TEXT("DebugTrace: Unable to create file mapping object DBWIN_BUFFER"), TEXT("Error"), MB_OK);
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CloseHandle(heventDBWIN);
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CloseHandle(heventData);
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return;
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}
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lpszSharedMem = (LPTSTR)MapViewOfFile(hSharedFile, FILE_MAP_WRITE, 0, 0, 512);
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if (!lpszSharedMem)
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{
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//MessageBox(NULL, "DebugTrace: Unable to map shared memory", "Error", MB_OK);
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CloseHandle(heventDBWIN);
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CloseHandle(heventData);
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return;
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}
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/* wait for buffer event */
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WaitForSingleObject(heventDBWIN, INFINITE);
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/* write it to the shared memory */
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*((LPDWORD)lpszSharedMem) = _getpid();
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wsprintf(lpszSharedMem + sizeof(DWORD), TEXT("%s"), achBuffer);
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/* signal data ready event */
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SetEvent(heventData);
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/* clean up handles */
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CloseHandle(hSharedFile);
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CloseHandle(heventData);
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CloseHandle(heventDBWIN);
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return;
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}
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#endif |