kc3-lang/angle/util/linux/LinuxTimer.cpp

• Show log

  Commit

• Hash : 9f088621
  Author :
  Date : 2018-12-29T20:46:15
  

  Revert "Load entry points dynamically in tests and samples."
  
  This reverts commit 03923558a7103827ffec6a4d2a1453ed91f01c6f.
  
  Reason for revert: fails compilation on Android, ChromeOS and Fuchsia during roll https://chromium-review.googlesource.com/c/chromium/src/+/1392624
  
  Original change's description:
  > Load entry points dynamically in tests and samples.
  > 
  > This CL adds a dynamic loader generator based on XML files. It also
  > refactors the entry point generation script to move the XML parsing
  > into a helper class.
  > 
  > Additionally this includes a new GLES 1.0 base header. The new
  > header allows for function pointer types and hiding prototypes.
  > 
  > All tests and samples now load ANGLE dynamically. In the future this
  > will be extended to load entry points from the driver directly when
  > possible. This will allow us to perform more accurate A/B testing.
  > 
  > The new build configuration leads to some tests having more warnings
  > applied. The CL includes fixes for the new warnings.
  > 
  > Bug: angleproject:2995
  > Change-Id: I6726d4163f7a6e54d2482f094c0a952f59702a05
  > Reviewed-on: https://chromium-review.googlesource.com/c/1359516
  > Commit-Queue: Jamie Madill <jmadill@chromium.org>
  > Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  
  TBR=ynovikov@chromium.org,jmadill@chromium.org,syoussefi@chromium.org
  
  Change-Id: I902bec2d733c2b879be29c02ab52a0b7d4eaa077
  No-Presubmit: true
  No-Tree-Checks: true
  No-Try: true
  Bug: angleproject:2995
  Reviewed-on: https://chromium-review.googlesource.com/c/1392381
  Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
  Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
  

Download

• util/linux/LinuxTimer.cpp

• //
  // Copyright (c) 2015 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.
  //
  
  // LinuxTimer.cpp: Implementation of a high precision timer class on Linux
  
  #include "linux/LinuxTimer.h"
  #include <iostream>
  
  LinuxTimer::LinuxTimer()
      : mRunning(false)
  {
  }
  
  namespace
  {
  uint64_t getCurrentTimeNs()
  {
      struct timespec currentTime;
      clock_gettime(CLOCK_MONOTONIC, &currentTime);
      return currentTime.tv_sec * 1'000'000'000llu + currentTime.tv_nsec;
  }
  }  // anonymous namespace
  
  void LinuxTimer::start()
  {
      mStartTimeNs = getCurrentTimeNs();
      mRunning = true;
  }
  
  void LinuxTimer::stop()
  {
      mStopTimeNs = getCurrentTimeNs();
      mRunning = false;
  }
  
  double LinuxTimer::getElapsedTime() const
  {
      uint64_t endTimeNs;
      if (mRunning)
      {
          endTimeNs = getCurrentTimeNs();
      }
      else
      {
          endTimeNs = mStopTimeNs;
      }
  
      return (endTimeNs - mStartTimeNs) * 1e-9;
  }
  
  double LinuxTimer::getAbsoluteTime()
  {
      return getCurrentTimeNs() * 1e-9;
  }
  
  Timer *CreateTimer()
  {
      return new LinuxTimer();
  }
  

Download