This reverts the previous revert, commit
5a04f4fd68.
Previously reverted changes:
> Revert "[SAB] Move Atomics builtins to C++"
>
> This reverts commit 2b9840d86f.
>
> Revert "[SAB] Remove unreachable Uint8Clamped atomics paths"
>
> This reverts commit d1160fb14f.
>
> Revert "Remove tiny unit test for MinSimple/MaxSimple"
>
> This reverts commit 837760ecb7.
>
> Revert "Remove infrastructure for experimental JS natives"
>
> This reverts commit 8cfe45b6f1.
These changes were reverted to improve a perf regression on a Chrome
bot. Since then, the regression has reappeared, then disappeared again
all from seemingly unrelated changes.
BUG=v8:6033
TBR=adamk@chromium.org,hpayer@chromium.org,yangguo@chromium.org
Review-Url: https://codereview.chromium.org/2732213005
Cr-Commit-Position: refs/heads/master@{#43758}
perf regression. See crbug.com/695653 for more info.
Revert "[SAB] Move Atomics builtins to C++"
This reverts commit 2b9840d86f.
Revert "[SAB] Remove unreachable Uint8Clamped atomics paths"
This reverts commit d1160fb14f.
Revert "Remove tiny unit test for MinSimple/MaxSimple"
This reverts commit 837760ecb7.
Revert "Remove infrastructure for experimental JS natives"
This reverts commit 8cfe45b6f1.
BUG=695653
TBR=hablich@chromium.org
Review-Url: https://codereview.chromium.org/2715223003
Cr-Commit-Position: refs/heads/master@{#43462}
This patch refactors the Atomics builtins so that they are implemented
as C++ builtins rather than experimental JS builtins. Previously, each
of these functions called out to a runtime function, so no significant
change in performance is anticipated. The goal of this patch is to
remove the last user of experimental JS builtins so that the mechanism
can be removed, for performance reasons. The patch includes a drive-by
fix of a check-fail. For the most part, the patch is just moving code
without modification from runtime-atomics.cc to
builtins-sharedarraybuffer.cc .
BUG=v8:5880
Review-Url: https://codereview.chromium.org/2698813004
Cr-Commit-Position: refs/heads/master@{#43335}
Also if the count is not specified, it should wake all waiters.
BUG=v8:4777
Review-Url: https://codereview.chromium.org/2659083004
Cr-Commit-Position: refs/heads/master@{#42871}
Atomics.wait is a function which may block, which is not allowed on the
main thread. Since V8 doesn't know whether a particular isolate is the
"main thread", this CL adds an option to Isolate::CreateParams to choose
whether this function is allowed.
Review-Url: https://codereview.chromium.org/2642293002
Cr-Commit-Position: refs/heads/master@{#42611}
* Rename Atomics.futexWait -> Atomics.wait
* Rename Atomics.futexWake -> Atomics.wake
* Remove Atomics.futexWakeOrRequeue
* Return value of Atomics.wait is now a string: "ok", "not-equal" or
"timed-out"
* Update comments that reference URL for ecmascript_sharedmem to
https://github.com/tc39/ecmascript_sharedmem
Review-Url: https://codereview.chromium.org/2143443002
Cr-Commit-Position: refs/heads/master@{#37727}
