Erikcorry/multi sandbox #3102
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Erikcorry/multi sandbox #3102
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jasnell
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Nov 13, 2024
| } else { | ||
| auto result = BackingStore(v8::ArrayBuffer::NewBackingStore(js.v8Isolate, size), size, 0, | ||
| getBufferSourceElementSize<T>(), construct<T>, checkIsIntegerType<T>()); | ||
| memcpy(result.asArrayPtr().begin(), data.begin(), size); |
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Use result.AsArrayPtr().copyFrom(...) here instead?
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Also, using jsg::BackingStore::alloc<T>(js, N) would be easier here?
jasnell
reviewed
Nov 13, 2024
| // Creates a new BackingStore that takes over ownership of the given kj::Array. | ||
| // The bytes may be moved if they are not inside the sandbox already. |
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Suggested change
| // The bytes may be moved if they are not inside the sandbox already. | |
| // The bytes may be copied if they are not inside the sandbox already. |
jasnell
reviewed
Nov 13, 2024
| size_t size = value.size(); | ||
| if (size == 0) { | ||
| // BackingStore doesn't call custom deleter if begin is null, which it often is for empty | ||
| // arrays. | ||
| return v8::ArrayBuffer::New(isolate, 0); | ||
| } | ||
| byte* begin = value.begin(); | ||
| if (isolate->GetGroup().SandboxContains(begin)) { |
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Perhaps this could be extracted into a separate utility since there are two places doing this same check and operation?
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