feat: Support custom host objects in ValueSerializer #1322
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Note. While I am fairly confident the changes in this PR are correct, I am still working through the corresponding changes in deno_core required to make use of this functionality. |
lrowe
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Sep 16, 2023
This avoids substantial slowdowns caused by host objects using embedded fields. Depends on: denoland/rusty_v8#1322 Current status: For some reason v8::Symbol::for_global is returning a different symbol to the one defined in 01_core.js. running 2 tests from ./cli/tests/unit/message_channel_test.ts messagechannel ... ok (34ms) messagechannel clone port ...result=Some(false) constructor=Object keys.length=0, identity hash:499026937 result=Some(false) constructor=MessagePort keys.length=4, identity hash:499026937 0 symbol "Deno.core.customHostObject" is false, hash 253732785 1 symbol "[[webidl.brand]]" is false, hash 764160415 2 symbol "undefined" is false, hash 758685447 3 symbol "id" is false, hash 997007839
lrowe
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Sep 16, 2023
This avoids substantial slowdowns caused by host objects using embedded fields. Depends on: denoland/rusty_v8#1322 Current status: For some reason v8::Symbol::for_global is returning a different symbol to the one defined in 01_core.js. ``` $ ./target/debug/deno test cli/tests/unit/message_channel_test.ts running 2 tests from ./cli/tests/unit/message_channel_test.ts messagechannel ... ok (35ms) messagechannel clone port ...result=Some(false) constructor=Object keys.length=0, identity hash:560437950 is_object false is_symbol true result=Some(false) constructor=MessagePort keys.length=4, identity hash:560437950 is_object false is_symbol true 0 symbol "Deno.core.customHostObject" is false, hash 253732785 is_object false is_symbol true 1 symbol "[[webidl.brand]]" is false, hash 764160415 is_object false is_symbol true 2 symbol "undefined" is false, hash 758685447 is_object false is_symbol true 3 symbol "id" is false, hash 997007839 is_object false is_symbol true Uncaught error from ./cli/tests/unit/message_channel_test.ts FAILED messagechannel clone port ... cancelled (0ms) ```
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lrowe
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Sep 17, 2023
Avoids substantial slowdown caused by host objects with embedder fields. * Depends on: denoland/rusty_v8#1322 * Depends on: denoland/rusty_v8#1324 * Deno bug: denoland/deno#12067
lrowe
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Sep 17, 2023
Avoids substantial slowdown caused by host objects with embedder fields. * Depends on: denoland/rusty_v8#1322 * Depends on: denoland/rusty_v8#1324 * Deno bug: denoland/deno#12067
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lrowe
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Sep 17, 2023
Avoids substantial slowdown caused by host objects with embedder fields. * Depends on: denoland/rusty_v8#1322 * Depends on: denoland/rusty_v8#1324 * Deno bug: denoland/deno#12067
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lrowe
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Sep 27, 2023
Avoids substantial slowdown caused by host objects with embedder fields. * Depends on: denoland/rusty_v8#1322 * Depends on: denoland/rusty_v8#1324 * Deno bug: denoland/deno#12067
lrowe
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legendecas
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lrowe
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Avoids substantial slowdown caused by host objects with embedder fields. * Depends on: denoland/rusty_v8#1322 * Depends on: denoland/rusty_v8#1324 * Deno bug: denoland/deno#12067
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With the change to has_custom_host_object I think this is ready for merging. @legendecas could you approve your review unless you have other concerns? |
mmastrac
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Nov 18, 2023
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Yup, I'll review tonight. |
bartlomieju
approved these changes
Nov 20, 2023
lrowe
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Nov 27, 2023
Avoids substantial slowdown caused by host objects with embedder fields. * Depends on: denoland/rusty_v8#1322 * Depends on: denoland/rusty_v8#1324 * Deno bug: denoland/deno#12067
lrowe
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Nov 28, 2023
Avoids substantial slowdown caused by host objects with embedder fields. * Depends on: denoland/rusty_v8#1322 * Depends on: denoland/rusty_v8#1324 * Deno bug: denoland/deno#12067
lrowe
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Nov 28, 2023
Avoids substantial slowdown caused by host objects with embedder fields. * Depends on: denoland/rusty_v8#1322 * Depends on: denoland/rusty_v8#1324 * Deno bug: denoland/deno#12067
lrowe
added a commit
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Nov 28, 2023
Avoids substantial slowdown caused by host objects with embedder fields. * Depends on: denoland/rusty_v8#1322 * Depends on: denoland/rusty_v8#1324 * Deno bug: denoland/deno#12067
lrowe
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Nov 28, 2023
Avoids substantial slowdown caused by host objects with embedder fields. * Depends on: denoland/rusty_v8#1322 * Depends on: denoland/rusty_v8#1324 * Deno bug: denoland/deno#12067
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Add v8::ValueSerializerImpl::{has_custom_host_object,is_host_object} equivalents for v8::ValueSerializer::Delegate::{HasCustomHostObject,IsCustomHostObject}.
This enables serializing custom host objects without embedder fields.