Reland "[heap] Turn on parallel compaction"

Reland "[heap] Turn on parallel compaction"

This reverts commit e682048027b51dea5b1c9a970e09b8b2a99fcae6.

BUG=chromium:524425
LOG=N
CQ_EXTRA_TRYBOTS=tryserver.v8:v8_linux_arm64_gc_stress_dbg;tryserver.v8:v8_linux_gc_stress_dbg;tryserver.v8:v8_mac_gc_stress_dbg;tryserver.v8:v8_linux64_msan_rel;tryserver.v8:v8_linux64_tsan_rel

Committed: https://crrev.com/c82d2323ffd5c399ba37da389ba0cdc72f46c97f
Cr-Commit-Position: refs/heads/master@{#32009}

[Hannes Payer (out of office), 2015-11-16 11:05:43]

hpayer@chromium.org changed reviewers:
+ hpayer@chromium.org

[Hannes Payer (out of office), 2015-11-16 11:05:43]

Lgtm

[Michael Lippautz, 2015-11-16 13:53:10]

Description was changed from

==========
Reland "[heap] Turn on parallel compaction"

This reverts commit e682048027b51dea5b1c9a970e09b8b2a99fcae6.

BUG=chromium:524425
LOG=N
CQ_EXTRA_TRYBOTS=tryserver.v8:v8_linux_arm64_gc_stress_dbg;tryserver.v8:v8_linux_gc_stress_dbg;tryserver.v8:v8_mac_gc_stress_dbg;tryserver.v8:v8_linux64_msan_rel;tryserver.v8:v8_linux64_tsan_rel;tryserver.v8:v8_mac64_asan_rel
==========

to

==========
Reland "[heap] Turn on parallel compaction"

This reverts commit e682048027b51dea5b1c9a970e09b8b2a99fcae6.

BUG=chromium:524425
LOG=N
CQ_EXTRA_TRYBOTS=tryserver.v8:v8_linux_arm64_gc_stress_dbg;tryserver.v8:v8_linux_gc_stress_dbg;tryserver.v8:v8_mac_gc_stress_dbg;tryserver.v8:v8_linux64_msan_rel;tryserver.v8:v8_linux64_tsan_rel
==========

[Michael Lippautz, 2015-11-16 13:53:25]

The CQ bit was checked by mlippautz@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-11-16 13:53:30]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1444283002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1444283002/1

[commit-bot: I haz the power, 2015-11-16 14:30:42]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-11-16 14:30:43]

Dry run: This issue passed the CQ dry run.

[Michael Lippautz, 2015-11-16 14:35:40]

The CQ bit was checked by mlippautz@chromium.org

[commit-bot: I haz the power, 2015-11-16 14:35:45]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1444283002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1444283002/1

[commit-bot: I haz the power, 2015-11-16 14:37:03]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-16 14:37:23]

Patchset 1 (id:??) landed as
https://crrev.com/c82d2323ffd5c399ba37da389ba0cdc72f46c97f
Cr-Commit-Position: refs/heads/master@{#32009}

[Michael Lippautz, 2015-11-16 15:36:00]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1445093002/ by mlippautz@chromium.org.

The reason for reverting is: Looks like tasks are still scheduled during isolate
shutdown after waiting for remaining tasks:
 
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20arm64%20-%20....