kc3-lang/angle/src/common/debug.cpp

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• Hash : 5dc3b8b4
  Author :
  Date : 2012-11-28T19:43:49
  

  Don't call gl::output unless perf is enabled.
  
  gl::output allocates a pretty large stack buffer, so it has to call _chkstk. This is rather slow, so avoid calling gl::output if perf and tracing are disabled.
  
  BUG=
  
  Review URL: https://codereview.appspot.com/6843043
  
  git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1471 736b8ea6-26fd-11df-bfd4-992fa37f6226
  

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• src/common/debug.cpp

• //
  // Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // debug.cpp: Debugging utilities.
  
  #include "common/debug.h"
  
  #include <stdio.h>
  #include <stdarg.h>
  #include <d3d9.h>
  #include <windows.h>
  
  namespace gl
  {
  
  typedef void (WINAPI *PerfOutputFunction)(D3DCOLOR, LPCWSTR);
  
  static void output(bool traceFileDebugOnly, PerfOutputFunction perfFunc, const char *format, va_list vararg)
  {
  #if !defined(ANGLE_DISABLE_PERF)
      if (perfActive())
      {
          char message[32768];
          int len = vsprintf_s(message, format, vararg);
          if (len < 0)
          {
              return;
          }
  
          // There are no ASCII variants of these D3DPERF functions.
          wchar_t wideMessage[32768];
          for (int i = 0; i < len; ++i)
          {
              wideMessage[i] = message[i];
          }
          wideMessage[len] = 0;
  
          perfFunc(0, wideMessage);
      }
  #endif
  
  #if !defined(ANGLE_DISABLE_TRACE)
  #if defined(NDEBUG)
      if (traceFileDebugOnly)
      {
          return;
      }
  #endif
  
      FILE* file = fopen(TRACE_OUTPUT_FILE, "a");
      if (file)
      {
          vfprintf(file, format, vararg);
          fclose(file);
      }
  #endif
  }
  
  void trace(bool traceFileDebugOnly, const char *format, ...)
  {
      va_list vararg;
      va_start(vararg, format);
  #if defined(ANGLE_DISABLE_PERF)
      output(traceFileDebugOnly, NULL, format, vararg);
  #else
      output(traceFileDebugOnly, D3DPERF_SetMarker, format, vararg);
  #endif
      va_end(vararg);
  }
  
  bool perfActive()
  {
  #if defined(ANGLE_DISABLE_PERF)
      return false;
  #else
      static bool active = D3DPERF_GetStatus() != 0;
      return active;
  #endif
  }
  
  ScopedPerfEventHelper::ScopedPerfEventHelper(const char* format, ...)
  {
  #if !defined(ANGLE_DISABLE_PERF)
  #if defined(ANGLE_DISABLE_TRACE)
      if (!perfActive())
      {
          return;
      }
  #endif
      va_list vararg;
      va_start(vararg, format);
      output(true, reinterpret_cast<PerfOutputFunction>(D3DPERF_BeginEvent), format, vararg);
      va_end(vararg);
  #endif
  }
  
  ScopedPerfEventHelper::~ScopedPerfEventHelper()
  {
  #if !defined(ANGLE_DISABLE_PERF)
      if (perfActive())
      {
          D3DPERF_EndEvent();
      }
  #endif
  }
  }
  

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