/
atom_bindings.cc
281 lines (235 loc) · 9.23 KB
/
atom_bindings.cc
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// Copyright (c) 2013 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "atom/common/api/atom_bindings.h"
#include <algorithm>
#include <iostream>
#include <string>
#include "atom/common/api/file_output_stream.h"
#include "atom/common/api/locker.h"
#include "atom/common/atom_version.h"
#include "atom/common/chrome_version.h"
#include "atom/common/native_mate_converters/file_path_converter.h"
#include "atom/common/native_mate_converters/string16_converter.h"
#include "atom/common/node_includes.h"
#include "base/logging.h"
#include "base/process/process_info.h"
#include "base/process/process_metrics_iocounters.h"
#include "base/sys_info.h"
#include "native_mate/dictionary.h"
#include "v8/include/v8-profiler.h"
namespace atom {
namespace {
// Dummy class type that used for crashing the program.
struct DummyClass {
bool crash;
};
// Called when there is a fatal error in V8, we just crash the process here so
// we can get the stack trace.
void FatalErrorCallback(const char* location, const char* message) {
LOG(ERROR) << "Fatal error in V8: " << location << " " << message;
AtomBindings::Crash();
}
} // namespace
AtomBindings::AtomBindings(uv_loop_t* loop) {
uv_async_init(loop, &call_next_tick_async_, OnCallNextTick);
call_next_tick_async_.data = this;
metrics_ = base::ProcessMetrics::CreateCurrentProcessMetrics();
}
AtomBindings::~AtomBindings() {
uv_close(reinterpret_cast<uv_handle_t*>(&call_next_tick_async_), nullptr);
}
void AtomBindings::BindTo(v8::Isolate* isolate, v8::Local<v8::Object> process) {
isolate->SetFatalErrorHandler(FatalErrorCallback);
mate::Dictionary dict(isolate, process);
dict.SetMethod("crash", &AtomBindings::Crash);
dict.SetMethod("hang", &Hang);
dict.SetMethod("log", &Log);
dict.SetMethod("getHeapSnapshot", &GetHeapSnapshot);
dict.SetMethod("getHeapStatistics", &GetHeapStatistics);
dict.SetMethod("getProcessMemoryInfo", &GetProcessMemoryInfo);
dict.SetMethod("getCreationTime", &GetCreationTime);
dict.SetMethod("getSystemMemoryInfo", &GetSystemMemoryInfo);
dict.SetMethod("getCPUUsage", base::Bind(&AtomBindings::GetCPUUsage,
base::Unretained(metrics_.get())));
dict.SetMethod("getIOCounters", &GetIOCounters);
#if defined(OS_POSIX)
dict.SetMethod("setFdLimit", &base::SetFdLimit);
#endif
dict.SetMethod("activateUvLoop", base::Bind(&AtomBindings::ActivateUVLoop,
base::Unretained(this)));
#if defined(MAS_BUILD)
dict.Set("mas", true);
#endif
mate::Dictionary versions;
if (dict.Get("versions", &versions)) {
// TODO(kevinsawicki): Make read-only in 2.0 to match node
versions.Set(ATOM_PROJECT_NAME, ATOM_VERSION_STRING);
versions.Set("chrome", CHROME_VERSION_STRING);
}
}
void AtomBindings::EnvironmentDestroyed(node::Environment* env) {
auto it =
std::find(pending_next_ticks_.begin(), pending_next_ticks_.end(), env);
if (it != pending_next_ticks_.end())
pending_next_ticks_.erase(it);
}
void AtomBindings::ActivateUVLoop(v8::Isolate* isolate) {
node::Environment* env = node::Environment::GetCurrent(isolate);
if (std::find(pending_next_ticks_.begin(), pending_next_ticks_.end(), env) !=
pending_next_ticks_.end())
return;
pending_next_ticks_.push_back(env);
uv_async_send(&call_next_tick_async_);
}
// static
void AtomBindings::OnCallNextTick(uv_async_t* handle) {
AtomBindings* self = static_cast<AtomBindings*>(handle->data);
for (std::list<node::Environment*>::const_iterator it =
self->pending_next_ticks_.begin();
it != self->pending_next_ticks_.end(); ++it) {
node::Environment* env = *it;
mate::Locker locker(env->isolate());
v8::Context::Scope context_scope(env->context());
node::InternalCallbackScope scope(
env, v8::Local<v8::Object>(), {0, 0},
node::InternalCallbackScope::kAllowEmptyResource);
}
self->pending_next_ticks_.clear();
}
// static
void AtomBindings::Log(const base::string16& message) {
std::cout << message << std::flush;
}
// static
void AtomBindings::Crash() {
static_cast<DummyClass*>(nullptr)->crash = true;
}
// static
void AtomBindings::Hang() {
for (;;)
base::PlatformThread::Sleep(base::TimeDelta::FromSeconds(1));
}
// static
bool AtomBindings::GetHeapSnapshot(v8::Isolate* isolate,
const base::FilePath& file_path) {
FileOutputStream stream(file_path);
if (!stream.IsValid())
return false;
auto* snap = isolate->GetHeapProfiler()->TakeHeapSnapshot();
snap->Serialize(&stream, v8::HeapSnapshot::kJSON);
const_cast<v8::HeapSnapshot*>(snap)->Delete();
return stream.IsComplete();
}
// static
v8::Local<v8::Value> AtomBindings::GetHeapStatistics(v8::Isolate* isolate) {
v8::HeapStatistics v8_heap_stats;
isolate->GetHeapStatistics(&v8_heap_stats);
mate::Dictionary dict = mate::Dictionary::CreateEmpty(isolate);
dict.SetHidden("simple", true);
dict.Set("totalHeapSize",
static_cast<double>(v8_heap_stats.total_heap_size() >> 10));
dict.Set(
"totalHeapSizeExecutable",
static_cast<double>(v8_heap_stats.total_heap_size_executable() >> 10));
dict.Set("totalPhysicalSize",
static_cast<double>(v8_heap_stats.total_physical_size() >> 10));
dict.Set("totalAvailableSize",
static_cast<double>(v8_heap_stats.total_available_size() >> 10));
dict.Set("usedHeapSize",
static_cast<double>(v8_heap_stats.used_heap_size() >> 10));
dict.Set("heapSizeLimit",
static_cast<double>(v8_heap_stats.heap_size_limit() >> 10));
dict.Set("mallocedMemory",
static_cast<double>(v8_heap_stats.malloced_memory() >> 10));
dict.Set("peakMallocedMemory",
static_cast<double>(v8_heap_stats.peak_malloced_memory() >> 10));
dict.Set("doesZapGarbage",
static_cast<bool>(v8_heap_stats.does_zap_garbage()));
return dict.GetHandle();
}
// static
v8::Local<v8::Value> AtomBindings::GetProcessMemoryInfo(v8::Isolate* isolate) {
auto metrics = base::ProcessMetrics::CreateCurrentProcessMetrics();
mate::Dictionary dict = mate::Dictionary::CreateEmpty(isolate);
dict.SetHidden("simple", true);
dict.Set("workingSetSize",
static_cast<double>(metrics->GetWorkingSetSize() >> 10));
dict.Set("peakWorkingSetSize",
static_cast<double>(metrics->GetPeakWorkingSetSize() >> 10));
size_t private_bytes, shared_bytes;
if (metrics->GetMemoryBytes(&private_bytes, &shared_bytes)) {
dict.Set("privateBytes", static_cast<double>(private_bytes >> 10));
dict.Set("sharedBytes", static_cast<double>(shared_bytes >> 10));
}
return dict.GetHandle();
}
// static
v8::Local<v8::Value> AtomBindings::GetCreationTime(v8::Isolate* isolate) {
auto timeValue = base::CurrentProcessInfo::CreationTime();
if (timeValue.is_null()) {
return v8::Null(isolate);
}
double jsTime = timeValue.ToJsTime();
return v8::Number::New(isolate, jsTime);
}
// static
v8::Local<v8::Value> AtomBindings::GetSystemMemoryInfo(v8::Isolate* isolate,
mate::Arguments* args) {
base::SystemMemoryInfoKB mem_info;
if (!base::GetSystemMemoryInfo(&mem_info)) {
args->ThrowError("Unable to retrieve system memory information");
return v8::Undefined(isolate);
}
mate::Dictionary dict = mate::Dictionary::CreateEmpty(isolate);
dict.SetHidden("simple", true);
dict.Set("total", mem_info.total);
// See Chromium's "base/process/process_metrics.h" for an explanation.
int free =
#if defined(OS_WIN)
mem_info.avail_phys;
#else
mem_info.free;
#endif
dict.Set("free", free);
// NB: These return bogus values on macOS
#if !defined(OS_MACOSX)
dict.Set("swapTotal", mem_info.swap_total);
dict.Set("swapFree", mem_info.swap_free);
#endif
return dict.GetHandle();
}
// static
v8::Local<v8::Value> AtomBindings::GetCPUUsage(base::ProcessMetrics* metrics,
v8::Isolate* isolate) {
mate::Dictionary dict = mate::Dictionary::CreateEmpty(isolate);
dict.SetHidden("simple", true);
int processor_count = base::SysInfo::NumberOfProcessors();
dict.Set("percentCPUUsage",
metrics->GetPlatformIndependentCPUUsage() / processor_count);
// NB: This will throw NOTIMPLEMENTED() on Windows
// For backwards compatibility, we'll return 0
#if !defined(OS_WIN)
dict.Set("idleWakeupsPerSecond", metrics->GetIdleWakeupsPerSecond());
#else
dict.Set("idleWakeupsPerSecond", 0);
#endif
return dict.GetHandle();
}
// static
v8::Local<v8::Value> AtomBindings::GetIOCounters(v8::Isolate* isolate) {
auto metrics = base::ProcessMetrics::CreateCurrentProcessMetrics();
base::IoCounters io_counters;
mate::Dictionary dict = mate::Dictionary::CreateEmpty(isolate);
dict.SetHidden("simple", true);
if (metrics->GetIOCounters(&io_counters)) {
dict.Set("readOperationCount", io_counters.ReadOperationCount);
dict.Set("writeOperationCount", io_counters.WriteOperationCount);
dict.Set("otherOperationCount", io_counters.OtherOperationCount);
dict.Set("readTransferCount", io_counters.ReadTransferCount);
dict.Set("writeTransferCount", io_counters.WriteTransferCount);
dict.Set("otherTransferCount", io_counters.OtherTransferCount);
}
return dict.GetHandle();
}
} // namespace atom