b3e1eb0c0d
Introduce a ReusableUnoptimizedCompileState class, passed to ParseInfo, which stores a couple of pointers and most importantly the Zone and AstValueFactory of the parse. This allows the Zone and AstValueFactory to be reused across multiple parses, rather than re-initialising per-Parse. With this, we can amend the LazyCompileDispatcher to initialise one LocalIsolate, Zone and AstValueFactory per background thread loop, rather than one per compile task, which allows us to reduce per-task costs and re-use the AstValueFactory's string table and previous String internalizations. Change-Id: Ia0e29c4e31fbe29af57674ebb10916865d38b2ce Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3313106 Reviewed-by: Toon Verwaest <verwaest@chromium.org> Commit-Queue: Leszek Swirski <leszeks@chromium.org> Cr-Commit-Position: refs/heads/main@{#78289}
58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_UNITTESTS_TEST_HELPERS_H_
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#define V8_UNITTESTS_TEST_HELPERS_H_
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#include <memory>
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#include "include/v8-primitive.h"
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namespace v8 {
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class Isolate;
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namespace internal {
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class Object;
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template <typename T>
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class Handle;
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class Isolate;
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class SharedFunctionInfo;
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class String;
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class Utf16CharacterStream;
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namespace test {
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class ScriptResource : public v8::String::ExternalOneByteStringResource {
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public:
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ScriptResource(const char* data, size_t length)
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: data_(data), length_(length) {}
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~ScriptResource() override = default;
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ScriptResource(const ScriptResource&) = delete;
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ScriptResource& operator=(const ScriptResource&) = delete;
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const char* data() const override { return data_; }
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size_t length() const override { return length_; }
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private:
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const char* data_;
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size_t length_;
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};
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Handle<String> CreateSource(
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Isolate* isolate,
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v8::String::ExternalOneByteStringResource* maybe_resource);
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Handle<SharedFunctionInfo> CreateSharedFunctionInfo(
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Isolate* isolate,
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v8::String::ExternalOneByteStringResource* maybe_resource);
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std::unique_ptr<Utf16CharacterStream> SourceCharacterStreamForShared(
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Isolate* isolate, Handle<SharedFunctionInfo> shared);
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} // namespace test
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} // namespace internal
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} // namespace v8
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#endif // V8_UNITTESTS_TEST_HELPERS_H_
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