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llvm / scudo / 0d6e52047e84a3b3592f8d317c047568c5bdcd8b
commit0d6e52047e84a3b3592f8d317c047568c5bdcd8b[log] [tgz]
authorChia-hung Duan <chiahungduan@google.com>Thu Sep 21 20:59:25 2023 +0000
committerCopybara-Service <copybara-worker@google.com>Thu Sep 21 14:11:01 2023 -0700
tree01776821b93fef20f9cb975261d8dab9f4c7011b
parent8b99cb71cf96abaad2d37c71281536f2424247c0 [diff]
[scudo] Fine tune busy-waiting in HybridMutex

Instead of using hardware specific instruction, using simple loop over
volatile variable gives similar and more predicatable waiting time. Also
fine tune the waiting time to fit with the average time in malloc/free
operations.

Reviewed By: cferris

Differential Revision: https://reviews.llvm.org/D156951

GitOrigin-RevId: cde307e4657738f1ef5f2eceaa7f896358acb3d6
2 files changed
tree: 01776821b93fef20f9cb975261d8dab9f4c7011b
  1. benchmarks/
  2. fuzz/
  3. include/
  4. tests/
  5. tools/
  6. allocator_config.h
  7. atomic_helpers.h
  8. bytemap.h
  9. checksum.cpp
  10. checksum.h
  11. chunk.h
  12. combined.h
  13. common.cpp
  14. common.h
  15. crc32_hw.cpp
  16. flags.cpp
  17. flags.h
  18. flags.inc
  19. flags_parser.cpp
  20. flags_parser.h
  21. fuchsia.cpp
  22. fuchsia.h
  23. internal_defs.h
  24. LICENSE.TXT
  25. linux.cpp
  26. linux.h
  27. list.h
  28. local_cache.h
  29. mem_map.cpp
  30. mem_map.h
  31. mem_map_base.h
  32. mem_map_fuchsia.cpp
  33. mem_map_fuchsia.h
  34. mem_map_linux.cpp
  35. mem_map_linux.h
  36. memtag.h
  37. mutex.h
  38. options.h
  39. platform.h
  40. primary32.h
  41. primary64.h
  42. quarantine.h
  43. release.cpp
  44. release.h
  45. report.cpp
  46. report.h
  47. secondary.h
  48. size_class_map.h
  49. stack_depot.h
  50. stats.h
  51. string_utils.cpp
  52. string_utils.h
  53. thread_annotations.h
  54. timing.cpp
  55. timing.h
  56. trusty.cpp
  57. trusty.h
  58. tsd.h
  59. tsd_exclusive.h
  60. tsd_shared.h
  61. vector.h
  62. wrappers_c.cpp
  63. wrappers_c.h
  64. wrappers_c.inc
  65. wrappers_c_bionic.cpp
  66. wrappers_c_checks.h
  67. wrappers_cpp.cpp