gallium: Poor-man profiler for win32 kernel.

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 0000000000..958f99c327
--- /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 <jrfonseca@tungstengraphics.com>
+ * 
+ * @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 */