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176 lines
5.6 KiB
C
176 lines
5.6 KiB
C
/*
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* Win32 debugger functions
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*
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* Copyright (C) 1999 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdio.h>
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#include <string.h>
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winbase.h"
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#include "winerror.h"
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#include "winternl.h"
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#include "kernel_private.h"
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#include "wine/asm.h"
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#include "wine/debug.h"
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#include "wine/exception.h"
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WINE_DEFAULT_DEBUG_CHANNEL(debugstr);
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void *dummy = RtlUnwind; /* force importing RtlUnwind from ntdll */
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static LONG WINAPI debug_exception_handler( EXCEPTION_POINTERS *eptr )
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{
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EXCEPTION_RECORD *rec = eptr->ExceptionRecord;
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return (rec->ExceptionCode == DBG_PRINTEXCEPTION_C) ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH;
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}
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/***********************************************************************
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* OutputDebugStringA (KERNEL32.@)
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*
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* Duplicate since IMVU doesn't like it if we call kernelbase.OutputDebugStringA.
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*/
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void WINAPI DECLSPEC_HOTPATCH OutputDebugStringA( LPCSTR str )
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{
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static HANDLE DBWinMutex = NULL;
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static BOOL mutex_inited = FALSE;
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BOOL caught_by_dbg = TRUE;
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if (!str) str = "";
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WARN( "%s\n", debugstr_a(str) );
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/* raise exception, WaitForDebugEvent() will generate a corresponding debug event */
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__TRY
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{
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ULONG_PTR args[2];
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args[0] = strlen(str) + 1;
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args[1] = (ULONG_PTR)str;
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RaiseException( DBG_PRINTEXCEPTION_C, 0, 2, args );
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}
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__EXCEPT(debug_exception_handler)
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{
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caught_by_dbg = FALSE;
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}
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__ENDTRY
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if (caught_by_dbg) return;
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/* send string to a system-wide monitor */
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if (!mutex_inited)
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{
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/* first call to OutputDebugString, initialize mutex handle */
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HANDLE mutex = CreateMutexExW( NULL, L"DBWinMutex", 0, SYNCHRONIZE );
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if (mutex)
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{
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if (InterlockedCompareExchangePointer( &DBWinMutex, mutex, 0 ) != 0)
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/* someone beat us here... */
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CloseHandle( mutex );
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}
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mutex_inited = TRUE;
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}
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if (DBWinMutex)
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{
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HANDLE mapping;
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mapping = OpenFileMappingW( FILE_MAP_WRITE, FALSE, L"DBWIN_BUFFER" );
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if (mapping)
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{
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LPVOID buffer;
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HANDLE eventbuffer, eventdata;
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buffer = MapViewOfFile( mapping, FILE_MAP_WRITE, 0, 0, 0 );
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eventbuffer = OpenEventW( SYNCHRONIZE, FALSE, L"DBWIN_BUFFER_READY" );
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eventdata = OpenEventW( EVENT_MODIFY_STATE, FALSE, L"DBWIN_DATA_READY" );
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if (buffer && eventbuffer && eventdata)
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{
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/* monitor is present, synchronize with other OutputDebugString invocations */
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WaitForSingleObject( DBWinMutex, INFINITE );
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/* acquire control over the buffer */
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if (WaitForSingleObject( eventbuffer, 10000 ) == WAIT_OBJECT_0)
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{
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int str_len = strlen( str );
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struct _mon_buffer_t
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{
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DWORD pid;
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char buffer[1];
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} *mon_buffer = (struct _mon_buffer_t*) buffer;
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if (str_len > (4096 - sizeof(DWORD) - 1)) str_len = 4096 - sizeof(DWORD) - 1;
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mon_buffer->pid = GetCurrentProcessId();
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memcpy( mon_buffer->buffer, str, str_len );
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mon_buffer->buffer[str_len] = 0;
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/* signal data ready */
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SetEvent( eventdata );
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}
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ReleaseMutex( DBWinMutex );
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}
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if (buffer) UnmapViewOfFile( buffer );
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if (eventbuffer) CloseHandle( eventbuffer );
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if (eventdata) CloseHandle( eventdata );
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CloseHandle( mapping );
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}
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}
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}
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/***********************************************************************
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* DebugBreakProcess (KERNEL32.@)
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*
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* Raises an exception so that a debugger (if attached)
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* can take some action. Same as DebugBreak, but applies to any process.
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*
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* PARAMS
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* hProc [I] Process to break into.
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*
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* RETURNS
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*
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* True if successful.
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*/
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BOOL WINAPI DebugBreakProcess(HANDLE process)
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{
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return set_ntstatus( DbgUiIssueRemoteBreakin( process ));
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}
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/***********************************************************************
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* DebugSetProcessKillOnExit (KERNEL32.@)
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*
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* Let a debugger decide whether a debuggee will be killed upon debugger
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* termination.
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*
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* PARAMS
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* kill [I] If set to true then kill the process on exit.
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*
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* RETURNS
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* True if successful, false otherwise.
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*/
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BOOL WINAPI DebugSetProcessKillOnExit(BOOL kill)
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{
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ULONG flag = kill ? DEBUG_KILL_ON_CLOSE : 0;
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return set_ntstatus( NtSetInformationDebugObject( DbgUiGetThreadDebugObject(),
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DebugObjectKillProcessOnExitInformation,
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&flag, sizeof(flag), NULL ));
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}
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