diff options
Diffstat (limited to 'src/gallium/auxiliary')
| -rw-r--r-- | src/gallium/auxiliary/util/p_debug_prof.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/p_debug_prof.c b/src/gallium/auxiliary/util/p_debug_prof.c new file mode 100644 index 00000000000..958f99c327c --- /dev/null +++ b/src/gallium/auxiliary/util/p_debug_prof.c @@ -0,0 +1,175 @@ +/************************************************************************** + * + * 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 + * Poor-man profiling. + * + * @author José Fonseca <[email protected]> + * + * @sa http://blogs.msdn.com/joshpoley/archive/2008/03/12/poor-man-s-profiler.aspx + * @sa http://www.johnpanzer.com/aci_cuj/index.html + */ + +#include "pipe/p_config.h" + +#if defined(PROFILE) && defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY) + +#include <windows.h> +#include <winddi.h> + +#include "pipe/p_debug.h" +#include "util/u_string.h" + + +#define PROFILE_FILE_SIZE 4*1024*1024 +#define FILE_NAME_SIZE 256 + +static WCHAR wFileName[FILE_NAME_SIZE]; +static ULONG_PTR iFile = 0; +static void *pMap = NULL; +static void *pMapEnd = NULL; + + +/** + * Called at the start of every method or function. + * + * @sa http://msdn.microsoft.com/en-us/library/c63a9b7h.aspx + */ +void __declspec(naked) __cdecl +_penter(void) { + _asm { + push ebx + mov ebx, [pMap] + test ebx, ebx + jz done + cmp ebx, [pMapEnd] + je done + push eax + push edx + mov eax, [esp+12] + and eax, 0xfffffffe + mov [ebx], eax + add ebx, 4 + rdtsc + mov [ebx], eax + add ebx, 4 + mov [pMap], ebx + pop edx + pop eax +done: + pop ebx + ret + } +} + + +/** + * Called at the end of Calls the end of every method or function. + * + * @sa http://msdn.microsoft.com/en-us/library/xc11y76y.aspx + */ +void __declspec(naked) __cdecl +_pexit(void) { + _asm { + push ebx + mov ebx, [pMap] + test ebx, ebx + jz done + cmp ebx, [pMapEnd] + je done + push eax + push edx + mov eax, [esp+12] + or eax, 0x00000001 + mov [ebx], eax + add ebx, 4 + rdtsc + mov [ebx], eax + add ebx, 4 + mov [pMap], ebx + pop edx + pop eax +done: + pop ebx + ret + } +} + + +void __declspec(naked) +__debug_profile_reference1(void) { + _asm { + call _penter + call _pexit + ret + } +} + + +void __declspec(naked) +__debug_profile_reference2(void) { + _asm { + call _penter + call __debug_profile_reference1 + call _pexit + ret + } +} + + +void +debug_profile_start(void) +{ + static unsigned no = 0; + char filename[FILE_NAME_SIZE]; + unsigned i; + + util_snprintf(filename, sizeof(filename), "\\??\\c:\\%03u.prof", ++no); + for(i = 0; i < FILE_NAME_SIZE; ++i) + wFileName[i] = (WCHAR)filename[i]; + + pMap = EngMapFile(wFileName, PROFILE_FILE_SIZE, &iFile); + if(pMap) { + pMapEnd = (unsigned char*)pMap + PROFILE_FILE_SIZE; + /* reference functions for calibration purposes */ + __debug_profile_reference2(); + } +} + +void +debug_profile_stop(void) +{ + if(iFile) { + EngUnmapFile(iFile); + /* TODO: truncate file */ + } + iFile = 0; + pMapEnd = pMap = NULL; +} + +#endif /* PROFILE */ |