gallium: Poor-man profiler for win32 kernel.
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/**************************************************************************
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*
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* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* @file
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* Poor-man profiling.
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*
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* @author José Fonseca <jrfonseca@tungstengraphics.com>
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*
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* @sa http://blogs.msdn.com/joshpoley/archive/2008/03/12/poor-man-s-profiler.aspx
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* @sa http://www.johnpanzer.com/aci_cuj/index.html
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*/
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#include "pipe/p_config.h"
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#if defined(PROFILE) && defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
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#include <windows.h>
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#include <winddi.h>
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#include "pipe/p_debug.h"
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#include "util/u_string.h"
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#define PROFILE_FILE_SIZE 4*1024*1024
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#define FILE_NAME_SIZE 256
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static WCHAR wFileName[FILE_NAME_SIZE];
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static ULONG_PTR iFile = 0;
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static void *pMap = NULL;
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static void *pMapEnd = NULL;
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/**
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* Called at the start of every method or function.
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*
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* @sa http://msdn.microsoft.com/en-us/library/c63a9b7h.aspx
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*/
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void __declspec(naked) __cdecl
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_penter(void) {
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_asm {
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push ebx
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mov ebx, [pMap]
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test ebx, ebx
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jz done
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cmp ebx, [pMapEnd]
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je done
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push eax
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push edx
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mov eax, [esp+12]
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and eax, 0xfffffffe
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mov [ebx], eax
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add ebx, 4
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rdtsc
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mov [ebx], eax
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add ebx, 4
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mov [pMap], ebx
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pop edx
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pop eax
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done:
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pop ebx
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ret
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}
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}
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/**
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* Called at the end of Calls the end of every method or function.
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*
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* @sa http://msdn.microsoft.com/en-us/library/xc11y76y.aspx
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*/
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void __declspec(naked) __cdecl
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_pexit(void) {
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_asm {
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push ebx
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mov ebx, [pMap]
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test ebx, ebx
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jz done
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cmp ebx, [pMapEnd]
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je done
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push eax
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push edx
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mov eax, [esp+12]
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or eax, 0x00000001
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mov [ebx], eax
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add ebx, 4
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rdtsc
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mov [ebx], eax
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add ebx, 4
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mov [pMap], ebx
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pop edx
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pop eax
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done:
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pop ebx
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ret
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}
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}
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void __declspec(naked)
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__debug_profile_reference1(void) {
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_asm {
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call _penter
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call _pexit
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ret
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}
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}
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void __declspec(naked)
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__debug_profile_reference2(void) {
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_asm {
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call _penter
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call __debug_profile_reference1
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call _pexit
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ret
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}
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}
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void
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debug_profile_start(void)
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{
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static unsigned no = 0;
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char filename[FILE_NAME_SIZE];
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unsigned i;
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util_snprintf(filename, sizeof(filename), "\\??\\c:\\%03u.prof", ++no);
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for(i = 0; i < FILE_NAME_SIZE; ++i)
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wFileName[i] = (WCHAR)filename[i];
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pMap = EngMapFile(wFileName, PROFILE_FILE_SIZE, &iFile);
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if(pMap) {
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pMapEnd = (unsigned char*)pMap + PROFILE_FILE_SIZE;
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/* reference functions for calibration purposes */
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__debug_profile_reference2();
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}
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}
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void
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debug_profile_stop(void)
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{
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if(iFile) {
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EngUnmapFile(iFile);
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/* TODO: truncate file */
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}
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iFile = 0;
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pMapEnd = pMap = NULL;
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}
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#endif /* PROFILE */
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@ -313,6 +313,17 @@ void
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debug_memory_end(unsigned long beginning);
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#if defined(PROFILE) && defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
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void
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debug_profile_start(void);
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void
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debug_profile_stop(void);
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#endif
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#ifdef DEBUG
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void debug_dump_image(const char *prefix,
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unsigned format, unsigned cpp,
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