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/**************************************************************************
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* @file
* Stream implementation for the Windows Display driver.
*/
#include "pipe/p_config.h"
#if defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
#include <windows.h>
#include <winddi.h>
#include "pipe/p_util.h"
#include "tr_stream.h"
#define MAP_FILE_SIZE (4*1024*1024)
struct trace_stream
{
WCHAR wFileName[MAX_PATH + 1];
ULONG_PTR iFile;
char *pMap;
size_t written;
};
struct trace_stream *
trace_stream_create(const char *filename)
{
struct trace_stream *stream;
ULONG BytesInUnicodeString;
stream = CALLOC_STRUCT(trace_stream);
if(!stream)
goto error1;
EngMultiByteToUnicodeN(
stream->wFileName,
sizeof(stream->wFileName),
&BytesInUnicodeString,
(char *)filename,
strlen(filename));
stream->pMap = EngMapFile(stream->wFileName, MAP_FILE_SIZE, &stream->iFile);
if(!stream->pMap)
goto error2;
return stream;
error2:
FREE(stream);
error1:
return NULL;
}
boolean
trace_stream_write(struct trace_stream *stream, const void *data, size_t size)
{
boolean ret;
if(!stream)
return FALSE;
if(stream->written + size > MAP_FILE_SIZE) {
ret = FALSE;
size = MAP_FILE_SIZE - stream->written;
}
else
ret = TRUE;
memcpy(stream->pMap + stream->written, data, size);
stream->written += size;
return ret;
}
void
trace_stream_flush(struct trace_stream *stream)
{
(void)stream;
}
void
trace_stream_close(struct trace_stream *stream)
{
if(!stream)
return;
EngUnmapFile(stream->iFile);
if(stream->written < MAP_FILE_SIZE) {
/* Truncate file size */
stream->pMap = EngMapFile(stream->wFileName, stream->written, &stream->iFile);
if(stream->pMap)
EngUnmapFile(stream->iFile);
}
FREE(stream);
}
#endif
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