Sweden-Number/dlls/kernel32/debugger.c

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