commit | 330e5ba26f58d0233f2904ee70ff56a8a20957ed | [log] [tgz] |
---|---|---|
author | Peter Marshall <petermarshall@chromium.org> | Tue May 07 10:54:45 2019 |
committer | Commit Bot <commit-bot@chromium.org> | Tue May 07 11:46:06 2019 |
tree | 83781313785d011bf5ee7a57ee7739339e86effb | |
parent | 8168c7697672b50cf348bf6bea7b71266dd543b4 [diff] |
Reland "[typedarray] Make JSTypedArray::length authoritative." This is a reland of ad44c258d7c2df82b3252cd11cf2c329dc4ca86b Patchset 2 is the original CL Patchset 3 fixes some misuses of FixedArrayBase::length() and adds some DCHECKS to flush out any more misuses. Patchset 4 adds the PPC/S390 port by miladfar@ca.ibm.com. Original change's description: > [typedarray] Make JSTypedArray::length authoritative. > > This is the first step towards full huge typed array support in V8. > Before this change, the JSTypedArray::length and the elements backing > store length (FixedTypedArrayBase::length) were used more or less > interchangeably to determine the number of elements in a JSTypedArray. > > With this change we disentangle these two lengths, and instead make > JSTypedArray::length authoritative. For on-heap typed arrays, the > FixedTypedArrayBase::length will remain the number of elements in the > backing store, but for the off-heap typed arrays, this length will be > set to 0 (matching the fact that the FixedTypedArrayBase instance does > not contain any elements itself). > > This also unifies the JSTypedArray::set_/length() and length_value() > methods to only have JSTypedArray::set_/length() which returns/takes > size_t values. Currently this still requires the values to be in Smi > range, but later we will extend this to allow arbitrary size_t values > (in the safe integer range). > > Bug: v8:4153, v8:7881 > Change-Id: Iff9089130bb31fa9e08e0cf913e7ab52c3dbf107 > Cq-Include-Trybots: luci.chromium.try:linux-blink-rel > Doc: http://doc/1Z-wM2qwvAuxH46e9ivtkYvKzzwYZg8ymm0x0wJaomow > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1543729 > Commit-Queue: Benedikt Meurer <bmeurer@chromium.org> > Reviewed-by: Peter Marshall <petermarshall@chromium.org> > Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> > Reviewed-by: Ben Titzer <titzer@chromium.org> > Reviewed-by: Hannes Payer <hpayer@chromium.org> > Cr-Commit-Position: refs/heads/master@{#60648} Bug: v8:4153, v8:7881, v8:9105 Change-Id: Ic38f833071a723642ebc6f82a4012dbc0878ef98 Cq-Include-Trybots: luci.chromium.try:linux-blink-rel Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1594435 Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Reviewed-by: Hannes Payer <hpayer@chromium.org> Commit-Queue: Peter Marshall <petermarshall@chromium.org> Cr-Commit-Position: refs/heads/master@{#61275}
V8 is Google's open source JavaScript engine.
V8 implements ECMAScript as specified in ECMA-262.
V8 is written in C++ and is used in Google Chrome, the open source browser from Google.
V8 can run standalone, or can be embedded into any C++ application.
V8 Project page: https://v8.dev/docs
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fetch v8
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git pull origin gclient sync
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:
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Please follow the instructions mentioned at v8.dev/docs/contribute.