2fad53e66b
* refactor: use v8 serialization for ipc * cloning process.env doesn't work * serialize host objects by enumerating key/values * new serialization can handle NaN, Infinity, and undefined correctly * can't allocate v8 objects during GC * backport microtasks fix * fix compile * fix node_stream_loader reentrancy * update subframe spec to expect undefined instead of null * write undefined instead of crashing when serializing host objects * fix webview spec * fix download spec * buffers are transformed into uint8arrays * can't serialize promises * fix chrome.i18n.getMessage * fix devtools tests * fix zoom test * fix debug build * fix lint * update ipcRenderer tests * fix printToPDF test * update patch * remove accidentally re-added remote-side spec * wip * don't attempt to serialize host objects * jump through different hoops to set options.webContents sometimes * whoops * fix lint * clean up error-handling logic * fix memory leak * fix lint * convert host objects using old base::Value serialization * fix lint more * fall back to base::Value-based serialization * remove commented-out code * add docs to breaking-changes.md * Update breaking-changes.md * update ipcRenderer and WebContents docs * lint * use named values for format tag * save a memcpy for ~30% speedup * get rid of calls to ShallowClone * extra debugging for paranoia * d'oh, use the correct named tags * apparently msstl doesn't like this DCHECK * funny story about that DCHECK * disable remote-related functions when enable_remote_module = false * nits * use EnableIf to disable remote methods in mojom * fix include * review comments
91 lines
2.9 KiB
C++
91 lines
2.9 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/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 "electron/shell/common/native_mate_converters/blink_converter.h"
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#include "electron/shell/common/native_mate_converters/value_converter.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() = default;
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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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// Reset our local ref count in case we are in a GC race condition
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// and will get more references in an inbound IPC message
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int ref_count = 0;
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const auto objects_it = ref_mapper_.find(context_id_);
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if (objects_it != std::end(ref_mapper_)) {
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auto& objects = objects_it->second;
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const auto ref_it = objects.find(object_id_);
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if (ref_it != std::end(objects)) {
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ref_count = ref_it->second;
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objects.erase(ref_it);
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}
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if (objects.empty())
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ref_mapper_.erase(objects_it);
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}
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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->DereferenceRemoteJSObject(context_id_, object_id_, ref_count);
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}
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} // namespace electron
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