electron/atom/renderer/api/atom_api_renderer_ipc.h
Thiago de Arruda 6ff111a141 perf: don't use JSON to send the result of ipcRenderer.sendSync. (#8953)
* Don't use JSON to send the result of `ipcRenderer.sendSync`.

- Change the return type of AtomViewHostMsg_Message_Sync from `base::string16`
  to `base::ListValue`
- Adjust lib/browser/api/web-contents.js and /lib/renderer/api/ipc-renderer.js
  to wrap/unwrap return values to/from array, instead of
  serializing/deserializing JSON.

This change can greatly improve `ipcRenderer.sendSync` calls where the return
value contains Buffer instances, because those are converted to Array before
being serialized to JSON(which has no efficient way of representing byte
arrays).

A simple benchmark where remote.require('fs') was used to read a 16mb file got
at least 5x faster, not to mention it used a lot less memory.  This difference
tends increases with larger buffers.

* Don't base64 encode Buffers

* Don't allocate V8ValueConverter on the heap

* Replace hidden global.sandbox with NodeBindings::IsInitialized()

* Refactoring: check NodeBindings::IsInitialized() in V8ValueConverter

* Refactor problematic test to make it more reliable

* Add tests for NaN and Infinity
2018-06-13 17:38:31 +10:00

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// Copyright (c) 2016 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#ifndef ATOM_RENDERER_API_ATOM_API_RENDERER_IPC_H_
#define ATOM_RENDERER_API_ATOM_API_RENDERER_IPC_H_
#include "base/values.h"
#include "native_mate/arguments.h"
namespace atom {
namespace api {
void Send(mate::Arguments* args,
const base::string16& channel,
const base::ListValue& arguments);
base::ListValue SendSync(mate::Arguments* args,
const base::string16& channel,
const base::ListValue& arguments);
void Initialize(v8::Local<v8::Object> exports,
v8::Local<v8::Value> unused,
v8::Local<v8::Context> context,
void* priv);
} // namespace api
} // namespace atom
#endif // ATOM_RENDERER_API_ATOM_API_RENDERER_IPC_H_