flutter_flutter/sky/engine/tonic/dart_isolate_scope.cc

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C++

// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "sky/engine/tonic/dart_isolate_scope.h"
namespace blink {
DartIsolateScope::DartIsolateScope(Dart_Isolate isolate) {
isolate_ = isolate;
previous_ = Dart_CurrentIsolate();
if (previous_ == isolate_)
return;
if (previous_)
Dart_ExitIsolate();
Dart_EnterIsolate(isolate_);
}
DartIsolateScope::~DartIsolateScope() {
DCHECK(Dart_CurrentIsolate() == isolate_);
if (previous_ == isolate_)
return;
Dart_ExitIsolate();
if (previous_)
Dart_EnterIsolate(previous_);
}
} // namespace blink