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llvm / scudo / abf2adde1537186064bb242846167b9f2769b943
commitabf2adde1537186064bb242846167b9f2769b943[log] [tgz]
authorPeter Collingbourne <peter@pcc.me.uk>Tue Nov 03 18:00:40 2020 -0800
committerCopybara-Service <copybara-worker@google.com>Tue Nov 10 16:34:22 2020 -0800
treebb6c248513fbbf8733ce31a1e5de2e85a49265e4
parent23f41e5d4e63d65f72d5dbb78db226760e324a33 [diff]
scudo: Don't memset previously released cached pages in the secondary allocator.

There is no need to memset released pages because they are already
zero. On db845c, before:

BM_stdlib_malloc_free_default/131072      34562 ns        34547 ns        20258 bytes_per_second=3.53345G/s

after:

BM_stdlib_malloc_free_default/131072      29618 ns        29589 ns        23485 bytes_per_second=4.12548G/s

Differential Revision: https://reviews.llvm.org/D90814

GitOrigin-RevId: ee7b629df27113c2752814efdec960042f799b03
1 file changed
tree: bb6c248513fbbf8733ce31a1e5de2e85a49265e4
  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. memtag.h
  30. mutex.h
  31. options.h
  32. platform.h
  33. primary32.h
  34. primary64.h
  35. quarantine.h
  36. release.cpp
  37. release.h
  38. report.cpp
  39. report.h
  40. secondary.h
  41. size_class_map.h
  42. stack_depot.h
  43. stats.h
  44. string_utils.cpp
  45. string_utils.h
  46. tsd.h
  47. tsd_exclusive.h
  48. tsd_shared.h
  49. vector.h
  50. wrappers_c.cpp
  51. wrappers_c.h
  52. wrappers_c.inc
  53. wrappers_c_bionic.cpp
  54. wrappers_c_checks.h
  55. wrappers_cpp.cpp