Пример #1
0
HANDLE WINAPI CreateMutexW(LPSECURITY_ATTRIBUTES lpMutexAttributes, BOOL bInitialOwner, LPCWSTR lpName)
{
    int flags = 0;
    if (bInitialOwner)
        flags |= CREATE_MUTEX_INITIAL_OWNER;
    return CreateMutexExW(lpMutexAttributes, lpName, flags, EVENT_ALL_ACCESS);
}
Пример #2
0
/***********************************************************************
 *           OutputDebugStringA   (KERNEL32.@)
 *
 *  Output by an application of an ascii string to a debugger (if attached)
 *  and program log.
 *
 * PARAMS
 *  str [I] The message to be logged and given to the debugger.
 *
 * RETURNS
 *
 *  Nothing.
 */
void WINAPI OutputDebugStringA( LPCSTR str )
{
    static HANDLE DBWinMutex = NULL;
    static BOOL mutex_inited = FALSE;

    if (!str) str = "";

    /* send string to attached debugger */
    SERVER_START_REQ( output_debug_string )
    {
        req->string  = wine_server_client_ptr( str );
        req->length  = strlen(str) + 1;
        wine_server_call( req );
    }
    SERVER_END_REQ;

    WARN("%s\n", debugstr_a(str));

    /* send string to a system-wide monitor */
    /* FIXME should only send to monitor if no debuggers are attached */

    if (!mutex_inited)
    {
        /* first call to OutputDebugString, initialize mutex handle */
        static const WCHAR mutexname[] = {'D','B','W','i','n','M','u','t','e','x',0};
        HANDLE mutex = CreateMutexExW( NULL, mutexname, 0, SYNCHRONIZE );
        if (mutex)
        {
            if (InterlockedCompareExchangePointer( &DBWinMutex, mutex, 0 ) != 0)
            {
                /* someone beat us here... */
                CloseHandle( mutex );
            }
        }
        mutex_inited = TRUE;
    }

    if (DBWinMutex)
    {
        static const WCHAR shmname[] = {'D','B','W','I','N','_','B','U','F','F','E','R',0};
        static const WCHAR eventbuffername[] = {'D','B','W','I','N','_','B','U','F','F','E','R','_','R','E','A','D','Y',0};
        static const WCHAR eventdataname[] = {'D','B','W','I','N','_','D','A','T','A','_','R','E','A','D','Y',0};
        HANDLE mapping;

        mapping = OpenFileMappingW( FILE_MAP_WRITE, FALSE, shmname );
        if (mapping)
        {
            LPVOID buffer;
            HANDLE eventbuffer, eventdata;

            buffer = MapViewOfFile( mapping, FILE_MAP_WRITE, 0, 0, 0 );
            eventbuffer = OpenEventW( SYNCHRONIZE, FALSE, eventbuffername );
            eventdata = OpenEventW( EVENT_MODIFY_STATE, FALSE, eventdataname );

            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;
                    struct _mon_buffer_t {
                        DWORD pid;
                        char buffer[1];
                    } *mon_buffer = (struct _mon_buffer_t*) buffer;

                    str_len = strlen( str );
                    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 );
        }
    }
}
Пример #3
0
/***********************************************************************
 *           OutputDebugStringA   (KERNEL32.@)
 *
 *  Output by an application of an ascii string to a debugger (if attached)
 *  and program log.
 *
 * PARAMS
 *  str [I] The message to be logged and given to the debugger.
 *
 * RETURNS
 *
 *  Nothing.
 */
void WINAPI 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 */
        static const WCHAR mutexname[] = {'D','B','W','i','n','M','u','t','e','x',0};
        HANDLE mutex = CreateMutexExW( NULL, mutexname, 0, SYNCHRONIZE );
        if (mutex)
        {
            if (InterlockedCompareExchangePointer( &DBWinMutex, mutex, 0 ) != 0)
            {
                /* someone beat us here... */
                CloseHandle( mutex );
            }
        }
        mutex_inited = TRUE;
    }

    if (DBWinMutex)
    {
        static const WCHAR shmname[] = {'D','B','W','I','N','_','B','U','F','F','E','R',0};
        static const WCHAR eventbuffername[] = {'D','B','W','I','N','_','B','U','F','F','E','R','_','R','E','A','D','Y',0};
        static const WCHAR eventdataname[] = {'D','B','W','I','N','_','D','A','T','A','_','R','E','A','D','Y',0};
        HANDLE mapping;

        mapping = OpenFileMappingW( FILE_MAP_WRITE, FALSE, shmname );
        if (mapping)
        {
            LPVOID buffer;
            HANDLE eventbuffer, eventdata;

            buffer = MapViewOfFile( mapping, FILE_MAP_WRITE, 0, 0, 0 );
            eventbuffer = OpenEventW( SYNCHRONIZE, FALSE, eventbuffername );
            eventdata = OpenEventW( EVENT_MODIFY_STATE, FALSE, eventdataname );

            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;
                    struct _mon_buffer_t {
                        DWORD pid;
                        char buffer[1];
                    } *mon_buffer = (struct _mon_buffer_t*) buffer;

                    str_len = strlen( str );
                    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 );
        }
    }
}