16d9298a9c
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} |
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cppgc | ||
libplatform | ||
APIDesign.md | ||
DEPS | ||
DIR_METADATA | ||
js_protocol-1.2.json | ||
js_protocol-1.3.json | ||
js_protocol.pdl | ||
OWNERS | ||
v8-cppgc.h | ||
v8-fast-api-calls.h | ||
v8-inspector-protocol.h | ||
v8-inspector.h | ||
v8-internal.h | ||
v8-metrics.h | ||
v8-platform.h | ||
v8-profiler.h | ||
v8-unwinder-state.h | ||
v8-util.h | ||
v8-value-serializer-version.h | ||
v8-version-string.h | ||
v8-version.h | ||
v8-wasm-trap-handler-posix.h | ||
v8-wasm-trap-handler-win.h | ||
v8.h | ||
v8config.h |