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chromium / chromium / src / c690099e270d9be683f5fae295ff5bddb4f833a3
commitc690099e270d9be683f5fae295ff5bddb4f833a3[log] [tgz]
authorxlai-o <xlai@chromium.org>Wed Oct 11 15:54:30 2017
committerCommit Bot <commit-bot@chromium.org>Wed Oct 11 15:54:30 2017
tree36f0853dfaf2cd40966ac33ba7656cfa6dee2998
parenta8b1707bb6ceec193bfa312308c2c6041e8629ee [diff]
Limit placeholder canvas to hold at most 3 pending image frames on main thread


When main thread is blocked and worker thread keeps animating, there will be
many accumulated callbacks that post images from OffscreenCanvas to the
placeholder canvas. This CL stops posting more images when there has been 3
images sent to the placeholder and none has returned. Once the main thread
becomes unblocked, placeholder returns back with a ReclaimResource request,
which will then trigger OffscreenCanvas to post the latest unposted image to
placeholder.

Bug: 762647
Change-Id: I3145ef424b1d9b1f268e9b4dbe6c36177ecfa7a4
Reviewed-on: https://chromium-review.googlesource.com/690935
Reviewed-by: Justin Novosad <junov@chromium.org>
Commit-Queue: Olivia Lai <xlai@chromium.org>
Cr-Commit-Position: refs/heads/master@{#507991}
6 files changed
tree: 36f0853dfaf2cd40966ac33ba7656cfa6dee2998
  1. android_webview/
  2. apps/
  3. ash/
  4. base/
  5. blink/
  6. build/
  7. build_overrides/
  8. cc/
  9. chrome/
  10. chrome_elf/
  11. chromecast/
  12. chromeos/
  13. cloud_print/
  14. components/
  15. content/
  16. courgette/
  17. crypto/
  18. dbus/
  19. device/
  20. docs/
  21. extensions/
  22. gin/
  23. google_apis/
  24. google_update/
  25. gpu/
  26. headless/
  27. infra/
  28. ios/
  29. ipc/
  30. jingle/
  31. mash/
  32. media/
  33. mojo/
  34. native_client_sdk/
  35. net/
  36. pdf/
  37. ppapi/
  38. printing/
  39. remoting/
  40. rlz/
  41. sandbox/
  42. services/
  43. skia/
  44. sql/
  45. storage/
  46. styleguide/
  47. testing/
  48. third_party/
  49. tools/
  50. ui/
  51. url/
  52. .clang-format
  53. .eslintrc.js
  54. .git-blame-ignore-revs
  55. .gitattributes
  56. .gitignore
  57. .gn
  58. .vpython
  59. AUTHORS
  60. BUILD.gn
  61. CODE_OF_CONDUCT.md
  62. codereview.settings
  63. DEPS
  64. ENG_REVIEW_OWNERS
  65. LICENSE
  66. LICENSE.chromium_os
  67. OWNERS
  68. PRESUBMIT.py
  69. PRESUBMIT_test.py
  70. PRESUBMIT_test_mocks.py
  71. README.md
  72. WATCHLISTS
README.md

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Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all users to experience the web.

The project's web site is https://www.chromium.org.

Documentation in the source is rooted in docs/README.md.

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