text: // Copyright 2018 The Bazel Authors. All rights reserved.
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //    http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  #ifndef WIN32_LEAN_AND_MEAN
  #define WIN32_LEAN_AND_MEAN
  #endif
  
  #include "src/main/cpp/util/profiler.h"
  
  #include <windows.h>
  
  #include <string>
  
  #include "src/main/cpp/util/errors.h"
  #include "src/main/cpp/util/exit_code.h"
  #include "src/main/cpp/util/logging.h"
  
  namespace blaze_util {
  namespace profiler {
  
  Ticks Ticks::Now() {
    LARGE_INTEGER counter;
    if (!QueryPerformanceCounter(&counter)) {
      std::string error = GetLastErrorString();
      BAZEL_DIE(blaze_exit_code::LOCAL_ENVIRONMENTAL_ERROR)
          << "QueryPerformanceCounter failed: " << error;
    }
    return {counter.QuadPart};
  }
  
  Duration Duration::FromTicks(const Ticks t) {
    LARGE_INTEGER freq;
    if (!QueryPerformanceFrequency(&freq)) {
      std::string error = GetLastErrorString();
      BAZEL_DIE(blaze_exit_code::LOCAL_ENVIRONMENTAL_ERROR)
          << "QueryPerformanceFrequency failed: " << error;
    }
    return {(t.value_ * 1000LL * 1000LL) / freq.QuadPart};
  }
  
  }  // namespace profiler
  }  // namespace blaze_util
  