85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
// Copyright (c) 2016 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "shell/common/api/remote_object_freer.h"
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#include "base/strings/utf_string_conversions.h"
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#include "base/values.h"
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#include "content/public/renderer/render_frame.h"
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#include "electron/shell/common/api/api.mojom.h"
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#include "third_party/blink/public/common/associated_interfaces/associated_interface_provider.h"
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#include "third_party/blink/public/web/web_local_frame.h"
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using blink::WebLocalFrame;
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namespace electron {
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namespace {
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content::RenderFrame* GetCurrentRenderFrame() {
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WebLocalFrame* frame = WebLocalFrame::FrameForCurrentContext();
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if (!frame)
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return nullptr;
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return content::RenderFrame::FromWebFrame(frame);
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}
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} // namespace
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// static
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void RemoteObjectFreer::BindTo(v8::Isolate* isolate,
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v8::Local<v8::Object> target,
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const std::string& context_id,
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int object_id) {
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new RemoteObjectFreer(isolate, target, context_id, object_id);
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}
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// static
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void RemoteObjectFreer::AddRef(const std::string& context_id, int object_id) {
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ref_mapper_[context_id][object_id]++;
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}
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// static
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std::map<std::string, std::map<int, int>> RemoteObjectFreer::ref_mapper_;
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RemoteObjectFreer::RemoteObjectFreer(v8::Isolate* isolate,
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v8::Local<v8::Object> target,
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const std::string& context_id,
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int object_id)
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: ObjectLifeMonitor(isolate, target),
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context_id_(context_id),
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object_id_(object_id),
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routing_id_(MSG_ROUTING_NONE) {
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content::RenderFrame* render_frame = GetCurrentRenderFrame();
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if (render_frame) {
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routing_id_ = render_frame->GetRoutingID();
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}
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}
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RemoteObjectFreer::~RemoteObjectFreer() {}
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void RemoteObjectFreer::RunDestructor() {
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content::RenderFrame* render_frame =
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content::RenderFrame::FromRoutingID(routing_id_);
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if (!render_frame)
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return;
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auto* channel = "ELECTRON_BROWSER_DEREFERENCE";
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base::ListValue args;
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args.AppendString(context_id_);
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args.AppendInteger(object_id_);
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args.AppendInteger(ref_mapper_[context_id_][object_id_]);
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// Reset our local ref count in case we are in a GC race condition and will
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// get more references in an inbound IPC message
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ref_mapper_[context_id_].erase(object_id_);
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if (ref_mapper_[context_id_].empty())
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ref_mapper_.erase(context_id_);
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mojom::ElectronBrowserAssociatedPtr electron_ptr;
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render_frame->GetRemoteAssociatedInterfaces()->GetInterface(
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mojo::MakeRequest(&electron_ptr));
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electron_ptr->Message(true, channel, args.Clone());
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}
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} // namespace electron
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