ranges_manager.cc 1.7 KB

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  1. // Copyright 2022 The Chromium Authors. All rights reserved.
  2. // Use of this source code is governed by a BSD-style license that can be
  3. // found in the LICENSE file.
  4. #include "base/metrics/ranges_manager.h"
  5. namespace base {
  6. RangesManager::RangesManager() = default;
  7. RangesManager::~RangesManager() {
  8. if (!do_not_release_ranges_on_destroy_for_testing_)
  9. ReleaseBucketRanges();
  10. }
  11. size_t RangesManager::BucketRangesHash::operator()(
  12. const BucketRanges* const a) const {
  13. return a->checksum();
  14. }
  15. bool RangesManager::BucketRangesEqual::operator()(
  16. const BucketRanges* const a,
  17. const BucketRanges* const b) const {
  18. return a->Equals(b);
  19. }
  20. const BucketRanges* RangesManager::RegisterOrDeleteDuplicateRanges(
  21. const BucketRanges* ranges) {
  22. DCHECK(ranges->HasValidChecksum());
  23. // Attempt to insert |ranges| into the set of registered BucketRanges. If an
  24. // equivalent one already exists (one with the exact same ranges), this
  25. // fetches the pre-existing one and does not insert the passed |ranges|.
  26. const BucketRanges* const registered = *ranges_.insert(ranges).first;
  27. // If there is already a registered equivalent BucketRanges, delete the passed
  28. // |ranges|.
  29. if (registered != ranges)
  30. delete ranges;
  31. return registered;
  32. }
  33. std::vector<const BucketRanges*> RangesManager::GetBucketRanges() {
  34. std::vector<const BucketRanges*> out;
  35. out.reserve(ranges_.size());
  36. out.assign(ranges_.begin(), ranges_.end());
  37. return out;
  38. }
  39. void RangesManager::ReleaseBucketRanges() {
  40. for (auto* range : ranges_) {
  41. delete range;
  42. }
  43. ranges_.clear();
  44. }
  45. void RangesManager::DoNotReleaseRangesOnDestroyForTesting() {
  46. do_not_release_ranges_on_destroy_for_testing_ = true;
  47. }
  48. } // namespace base