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

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• Author : Geoff Lang
  Date : 2014-05-30 11:50:07
  Hash : 44fa7594
  Message : Refactor platform related functionality into platform.h and tls.h. Since libGLESv2 and libEGL will eventually be cross platform, it will be useful to have platform defines and TLS functions that work everywhere. BUG=angle:664 Change-Id: Ia357925a0992d82e8b446d88d32a1984d319e6e8 Reviewed-on: https://chromium-review.googlesource.com/202133 Reviewed-by: Jamie Madill <jmadill@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>

• 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 "common/platform.h"
  
  #include <stdarg.h>
  #include <vector>
  #include <fstream>
  #include <cstdio>
  
  namespace gl
  {
  #if defined(ANGLE_ENABLE_PERF)
  typedef void (WINAPI *PerfOutputFunction)(D3DCOLOR, LPCWSTR);
  #else
  typedef void (*PerfOutputFunction)(unsigned int, const wchar_t*);
  #endif
  
  static void output(bool traceFileDebugOnly, PerfOutputFunction perfFunc, const char *format, va_list vararg)
  {
  #if defined(ANGLE_ENABLE_PERF) || defined(ANGLE_ENABLE_TRACE)
      static std::vector<char> asciiMessageBuffer(512);
  
      // Attempt to just print to the current buffer
      int len = vsnprintf(&asciiMessageBuffer[0], asciiMessageBuffer.size(), format, vararg);
      if (len < 0 || static_cast<size_t>(len) >= asciiMessageBuffer.size())
      {
          // Buffer was not large enough, calculate the required size and resize the buffer
          len = vsnprintf(NULL, 0, format, vararg);
          asciiMessageBuffer.resize(len + 1);
  
          // Print again
          vsnprintf(&asciiMessageBuffer[0], asciiMessageBuffer.size(), format, vararg);
      }
  
      // NULL terminate the buffer to be safe
      asciiMessageBuffer[len] = '\0';
  #endif
  
  #if defined(ANGLE_ENABLE_PERF)
      if (perfActive())
      {
          // The perf function only accepts wide strings, widen the ascii message
          static std::wstring wideMessage;
          if (wideMessage.capacity() < asciiMessageBuffer.size())
          {
              wideMessage.reserve(asciiMessageBuffer.size());
          }
  
          wideMessage.assign(asciiMessageBuffer.begin(), asciiMessageBuffer.begin() + len);
  
          perfFunc(0, wideMessage.c_str());
      }
  #endif // ANGLE_ENABLE_PERF
  
  #if defined(ANGLE_ENABLE_TRACE)
  #if defined(NDEBUG)
      if (traceFileDebugOnly)
      {
          return;
      }
  #endif // NDEBUG
  
      static std::ofstream file(TRACE_OUTPUT_FILE, std::ofstream::app);
      if (file)
      {
          file.write(&asciiMessageBuffer[0], len);
          file.flush();
      }
  
  #endif // ANGLE_ENABLE_TRACE
  }
  
  void trace(bool traceFileDebugOnly, const char *format, ...)
  {
      va_list vararg;
      va_start(vararg, format);
  #if defined(ANGLE_ENABLE_PERF)
      output(traceFileDebugOnly, D3DPERF_SetMarker, format, vararg);
  #else
      output(traceFileDebugOnly, NULL, format, vararg);
  #endif
      va_end(vararg);
  }
  
  bool perfActive()
  {
  #if defined(ANGLE_ENABLE_PERF)
      static bool active = D3DPERF_GetStatus() != 0;
      return active;
  #else
      return false;
  #endif
  }
  
  ScopedPerfEventHelper::ScopedPerfEventHelper(const char* format, ...)
  {
  #if defined(ANGLE_ENABLE_PERF)
  #if !defined(ANGLE_ENABLE_TRACE)
      if (!perfActive())
      {
          return;
      }
  #endif // !ANGLE_ENABLE_TRACE
      va_list vararg;
      va_start(vararg, format);
      output(true, reinterpret_cast<PerfOutputFunction>(D3DPERF_BeginEvent), format, vararg);
      va_end(vararg);
  #endif // ANGLE_ENABLE_PERF
  }
  
  ScopedPerfEventHelper::~ScopedPerfEventHelper()
  {
  #if defined(ANGLE_ENABLE_PERF)
      if (perfActive())
      {
          D3DPERF_EndEvent();
      }
  #endif
  }
  }