v8/include
Andreas Haas 16d9298a9c [api] Add callback to set up conditional features
Origin trials allow webpages to use experimental features even though
the features are not yet enabled by default. These features will then
get enabled per execution context: it is possible that the feature is
enabled in one execution context but disabled in another execution
context. In V8 we check for origin trials by calling a callback provided
by the embedder that takes the context as a parameter and returns
whether a feature is enabled in this context or not.

This approach fails when a feature changes the context itself, e.g. by
extending the global object. In that case the context is not available
yet to check for the origin trial.

To solve the problem this CL adds a new API function that can be called
by the embedder to notify V8 that context with the origin trial
information is finished. After that V8 can read the origin trial
information from the context and extend e.g. the global object with the
origin trial features.

Additionally to the API this CL also adds code to enable the
WebAssembly.Exception constructor conditionally, depending on whether
it has been enabled by an origin trial or not.

The Blink-side change: https://crrev.com/c/2775573

R=ulan@chromium.org, jkummerow@chromium.org

Change-Id: Ic05c4a89eb3e0e31469e49da8767d630c43b2e00
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2773287
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73597}
2021-03-23 09:03:34 +00:00
..
cppgc cppgc: Refactor object allocation to improve binary size 2021-03-17 22:01:23 +00:00
libplatform Step 1 (of 3-ish): Basic ETW Instrumentation in V8 2021-01-05 20:11:03 +00:00
APIDesign.md Move inspector protocol definitions to include/ 2019-06-18 17:59:36 +00:00
DEPS cppgc: Implement process-global state accessors. 2021-02-17 22:37:24 +00:00
DIR_METADATA Add DIR_METADATA files to v8. 2020-10-20 22:12:28 +00:00
js_protocol-1.2.json Move inspector protocol definitions to include/ 2019-06-18 17:59:36 +00:00
js_protocol-1.3.json Move inspector protocol definitions to include/ 2019-06-18 17:59:36 +00:00
js_protocol.pdl [inspector] Add wasmvalue to all subtype enums. 2021-02-11 16:53:18 +00:00
OWNERS Update include/OWNERS 2021-02-25 14:27:28 +00:00
v8-cppgc.h Reland "cppgc: Rework testing GC infrastructure" 2021-02-26 21:29:42 +00:00
v8-fast-api-calls.h Add missing include to v8-fast-api-calls.h 2021-03-04 16:58:04 +00:00
v8-inspector-protocol.h Fix LINT exceptions across the code base 2020-04-27 16:37:04 +00:00
v8-inspector.h Delegate unique id generation to embedder 2020-12-22 18:40:10 +00:00
v8-internal.h [fastcall] Add CPU profiler support for fast calls 2020-11-18 12:29:22 +00:00
v8-metrics.h [api, heap] Add GC events to v8::metrics::Recorder 2021-01-27 13:10:18 +00:00
v8-platform.h Reland "[wx] Keep the execute bit while making code writable" 2021-03-16 09:42:45 +00:00
v8-profiler.h [Callback] Execute DiscardedSamplesDelegate Callback when 2021-02-16 22:09:21 +00:00
v8-unwinder-state.h Add RISC-V backend 2021-02-09 17:06:36 +00:00
v8-util.h Fix LINT exceptions across the code base 2020-04-27 16:37:04 +00:00
v8-value-serializer-version.h Expose the ValueSerializer data format version as a compile-time constant. 2017-04-27 15:14:41 +00:00
v8-version-string.h Fix LINT exceptions across the code base 2020-04-27 16:37:04 +00:00
v8-version.h Changed version number to 9.1 2021-02-25 11:54:10 +00:00
v8-wasm-trap-handler-posix.h Fix LINT exceptions across the code base 2020-04-27 16:37:04 +00:00
v8-wasm-trap-handler-win.h Fix LINT exceptions across the code base 2020-04-27 16:37:04 +00:00
v8.h [api] Add callback to set up conditional features 2021-03-23 09:03:34 +00:00
v8config.h [build] Add header for externally-visible defines 2021-01-18 16:57:26 +00:00