164 lines
5 KiB
C++
164 lines
5 KiB
C++
// Copyright (c) 2013 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 "atom/common/api/atom_bindings.h"
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#include <algorithm>
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#include <iostream>
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#include <string>
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#include "atom/common/atom_version.h"
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#include "atom/common/chrome_version.h"
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#include "atom/common/native_mate_converters/string16_converter.h"
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#include "atom/common/node_includes.h"
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#include "base/logging.h"
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#include "base/process/process_metrics.h"
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#include "native_mate/dictionary.h"
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namespace atom {
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namespace {
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// Dummy class type that used for crashing the program.
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struct DummyClass { bool crash; };
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void Hang() {
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for (;;)
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base::PlatformThread::Sleep(base::TimeDelta::FromSeconds(1));
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}
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v8::Local<v8::Value> GetProcessMemoryInfo(v8::Isolate* isolate) {
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std::unique_ptr<base::ProcessMetrics> metrics(
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base::ProcessMetrics::CreateCurrentProcessMetrics());
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mate::Dictionary dict = mate::Dictionary::CreateEmpty(isolate);
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dict.Set("workingSetSize",
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static_cast<double>(metrics->GetWorkingSetSize() >> 10));
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dict.Set("peakWorkingSetSize",
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static_cast<double>(metrics->GetPeakWorkingSetSize() >> 10));
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size_t private_bytes, shared_bytes;
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if (metrics->GetMemoryBytes(&private_bytes, &shared_bytes)) {
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dict.Set("privateBytes", static_cast<double>(private_bytes >> 10));
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dict.Set("sharedBytes", static_cast<double>(shared_bytes >> 10));
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}
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return dict.GetHandle();
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}
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v8::Local<v8::Value> GetSystemMemoryInfo(v8::Isolate* isolate,
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mate::Arguments* args) {
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base::SystemMemoryInfoKB mem_info;
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if (!base::GetSystemMemoryInfo(&mem_info)) {
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args->ThrowError("Unable to retrieve system memory information");
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return v8::Undefined(isolate);
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}
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mate::Dictionary dict = mate::Dictionary::CreateEmpty(isolate);
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dict.Set("total", mem_info.total);
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dict.Set("free", mem_info.free);
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// NB: These return bogus values on macOS
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#if !defined(OS_MACOSX)
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dict.Set("swapTotal", mem_info.swap_total);
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dict.Set("swapFree", mem_info.swap_free);
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#endif
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return dict.GetHandle();
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}
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// Called when there is a fatal error in V8, we just crash the process here so
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// we can get the stack trace.
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void FatalErrorCallback(const char* location, const char* message) {
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LOG(ERROR) << "Fatal error in V8: " << location << " " << message;
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AtomBindings::Crash();
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}
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} // namespace
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AtomBindings::AtomBindings() {
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uv_async_init(uv_default_loop(), &call_next_tick_async_, OnCallNextTick);
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call_next_tick_async_.data = this;
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}
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AtomBindings::~AtomBindings() {
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uv_close(reinterpret_cast<uv_handle_t*>(&call_next_tick_async_), nullptr);
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}
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void AtomBindings::BindTo(v8::Isolate* isolate,
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v8::Local<v8::Object> process) {
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v8::V8::SetFatalErrorHandler(FatalErrorCallback);
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mate::Dictionary dict(isolate, process);
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dict.SetMethod("crash", &AtomBindings::Crash);
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dict.SetMethod("hang", &Hang);
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dict.SetMethod("log", &Log);
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dict.SetMethod("getProcessMemoryInfo", &GetProcessMemoryInfo);
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dict.SetMethod("getSystemMemoryInfo", &GetSystemMemoryInfo);
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#if defined(OS_POSIX)
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dict.SetMethod("setFdLimit", &base::SetFdLimit);
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#endif
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dict.SetMethod("activateUvLoop",
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base::Bind(&AtomBindings::ActivateUVLoop, base::Unretained(this)));
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#if defined(MAS_BUILD)
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dict.Set("mas", true);
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#endif
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mate::Dictionary versions;
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if (dict.Get("versions", &versions)) {
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// TODO(kevinsawicki): Make read-only in 2.0 to match node
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versions.Set(ATOM_PROJECT_NAME, ATOM_VERSION_STRING);
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versions.Set("chrome", CHROME_VERSION_STRING);
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// TODO(kevinsawicki): Remove in 2.0
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versions.Set("atom-shell", ATOM_VERSION_STRING);
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}
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}
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void AtomBindings::ActivateUVLoop(v8::Isolate* isolate) {
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node::Environment* env = node::Environment::GetCurrent(isolate);
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if (std::find(pending_next_ticks_.begin(), pending_next_ticks_.end(), env) !=
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pending_next_ticks_.end())
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return;
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pending_next_ticks_.push_back(env);
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uv_async_send(&call_next_tick_async_);
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}
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// static
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void AtomBindings::OnCallNextTick(uv_async_t* handle) {
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AtomBindings* self = static_cast<AtomBindings*>(handle->data);
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for (std::list<node::Environment*>::const_iterator it =
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self->pending_next_ticks_.begin();
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it != self->pending_next_ticks_.end(); ++it) {
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node::Environment* env = *it;
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// KickNextTick, copied from node.cc:
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node::Environment::AsyncCallbackScope callback_scope(env);
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if (callback_scope.in_makecallback())
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continue;
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node::Environment::TickInfo* tick_info = env->tick_info();
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if (tick_info->length() == 0)
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env->isolate()->RunMicrotasks();
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v8::Local<v8::Object> process = env->process_object();
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if (tick_info->length() == 0)
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tick_info->set_index(0);
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env->tick_callback_function()->Call(process, 0, nullptr).IsEmpty();
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}
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self->pending_next_ticks_.clear();
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}
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// static
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void AtomBindings::Log(const base::string16& message) {
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std::cout << message << std::flush;
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}
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// static
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void AtomBindings::Crash() {
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static_cast<DummyClass*>(nullptr)->crash = true;
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}
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} // namespace atom
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