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  1. // Copyright 2017 Google LLC
  2. //
  3. // Licensed under the Apache License, Version 2.0 (the "License");
  4. // you may not use this file except in compliance with the License.
  5. // You may obtain a copy of the License at
  6. //
  7. // http://www.apache.org/licenses/LICENSE-2.0
  8. //
  9. // Unless required by applicable law or agreed to in writing, software
  10. // distributed under the License is distributed on an "AS IS" BASIS,
  11. // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12. // See the License for the specific language governing permissions and
  13. // limitations under the License.
  14. package profiler
  15. import "runtime"
  16. func enableMutexProfiling() bool {
  17. // One percent of mutex contention events are profiled.
  18. runtime.SetMutexProfileFraction(100)
  19. return true
  20. }