From cb4390c05201cf7f2f992edf835574ce1369bc61 Mon Sep 17 00:00:00 2001 From: Anne van Kesteren Date: Sun, 30 Apr 2017 10:17:12 +0200 Subject: [PATCH] Editorial: modernize perform a microtask checkpoint --- source | 48 +++++++++++++++++++++++------------------------- 1 file changed, 23 insertions(+), 25 deletions(-) diff --git a/source b/source index 98217028f8c..018e1770502 100644 --- a/source +++ b/source @@ -89228,43 +89228,41 @@ dictionary PromiseRejectionEventInit : EventInit { following steps:

    +

  1. Set the performing a microtask checkpoint flag to true.

    2. -

  2. Let the performing a microtask checkpoint flag be true.

    3. - -

  3. Microtask queue handling: If the event loop's microtask - queue is empty, jump to the done step below.

    4. +
  4. +

    While the event loop's microtask queue is not empty:

    -

  5. Select the oldest microtask on the event loop's microtask - queue.

    6. +
      +

    1. Let oldestMicrotask be the oldest microtask on the event + loop's microtask queue.

      2. -

    2. Set the event loop's currently running task to the task selected in the previous step.

      3. +

    3. Set the event loop's currently running task to + oldestMicrotask.

      4. -
    4. +
    5. +

      Run: Run oldestMicrotask.

      -

      Run: Run the selected task.

      +

      This might involve invoking scripted callbacks, which eventually calls the + clean up after running script steps, which call this perform a microtask + checkpoint algorithm again, which is why we use the performing a microtask + checkpoint flag to avoid reentrancy.

      +
      6. -

      This might involve invoking scripted callbacks, which eventually calls the - clean up after running script steps, which call this perform a microtask - checkpoint algorithm again, which is why we use the performing a microtask - checkpoint flag to avoid reentrancy.

      +

    6. Set the event loop's currently running task back to + null.

      7. +

    7. Remove oldestMicrotask from the microtask queue.

      8. +
    -

  6. Set the event loop's currently running task back to - null.

    7. - -

  7. Remove the microtask run in the step above from the microtask - queue, and return to the microtask queue handling step.

    8. - -

  8. Done: For each environment settings object whose responsible - event loop is this event loop, notify about rejected promises - on that environment settings object.

    9. +

  9. For each environment settings object whose responsible event + loop is this event loop, notify about rejected promises on that + environment settings object.

  10. Cleanup Indexed Database transactions.

    11. -

  11. Let the performing a microtask checkpoint flag be false.

    12. - +

  12. Set the performing a microtask checkpoint flag to false.

If, while a compound microtask is running, the user agent is required to