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e8827952d5
This class is meant to be thread safe. In fact, its headerdoc statement on thread safety even mentions this. All fields on the class are readonly except the child isolate preparer. This field is set during VM instantiated isolate initialization. The VM may launch multiple isolate in the same isolate group on at the same time (each on a VM backed thread pool thread). Attempting to set the field without synchronization is a data race. Fixes https://github.com/flutter/flutter/issues/49358 Fixes b/147798920
67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
// Copyright 2013 The Flutter 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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#include "flutter/runtime/dart_isolate_group_data.h"
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#include "flutter/runtime/dart_snapshot.h"
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namespace flutter {
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DartIsolateGroupData::DartIsolateGroupData(
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const Settings& settings,
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fml::RefPtr<const DartSnapshot> isolate_snapshot,
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std::string advisory_script_uri,
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std::string advisory_script_entrypoint,
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const ChildIsolatePreparer& child_isolate_preparer,
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const fml::closure& isolate_create_callback,
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const fml::closure& isolate_shutdown_callback)
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: settings_(settings),
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isolate_snapshot_(isolate_snapshot),
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advisory_script_uri_(advisory_script_uri),
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advisory_script_entrypoint_(advisory_script_entrypoint),
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child_isolate_preparer_(child_isolate_preparer),
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isolate_create_callback_(isolate_create_callback),
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isolate_shutdown_callback_(isolate_shutdown_callback) {
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FML_DCHECK(isolate_snapshot_) << "Must contain a valid isolate snapshot.";
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}
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DartIsolateGroupData::~DartIsolateGroupData() = default;
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const Settings& DartIsolateGroupData::GetSettings() const {
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return settings_;
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}
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fml::RefPtr<const DartSnapshot> DartIsolateGroupData::GetIsolateSnapshot()
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const {
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return isolate_snapshot_;
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}
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const std::string& DartIsolateGroupData::GetAdvisoryScriptURI() const {
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return advisory_script_uri_;
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}
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const std::string& DartIsolateGroupData::GetAdvisoryScriptEntrypoint() const {
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return advisory_script_entrypoint_;
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}
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ChildIsolatePreparer DartIsolateGroupData::GetChildIsolatePreparer() const {
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std::scoped_lock lock(child_isolate_preparer_mutex_);
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return child_isolate_preparer_;
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}
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const fml::closure& DartIsolateGroupData::GetIsolateCreateCallback() const {
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return isolate_create_callback_;
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}
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const fml::closure& DartIsolateGroupData::GetIsolateShutdownCallback() const {
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return isolate_shutdown_callback_;
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}
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void DartIsolateGroupData::SetChildIsolatePreparer(
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const ChildIsolatePreparer& value) {
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std::scoped_lock lock(child_isolate_preparer_mutex_);
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child_isolate_preparer_ = value;
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}
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} // namespace flutter
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