electron/atom/common/api/atom_bindings.cc
2015-10-14 11:53:52 +08:00

127 lines
3.4 KiB
C++

// 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 <string>
#include <iostream>
#include "atom/common/atom_version.h"
#include "atom/common/chrome_version.h"
#include "atom/common/native_mate_converters/string16_converter.h"
#include "base/logging.h"
#include "base/process/process_metrics.h"
#include "native_mate/dictionary.h"
#include "atom/common/node_includes.h"
namespace atom {
namespace {
// Dummy class type that used for crashing the program.
struct DummyClass { bool crash; };
void Crash() {
static_cast<DummyClass*>(NULL)->crash = true;
}
void Hang() {
for (;;)
base::PlatformThread::Sleep(base::TimeDelta::FromSeconds(1));
}
// 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;
Crash();
}
void Log(const base::string16& message) {
std::cout << message;
}
} // namespace
AtomBindings::AtomBindings() {
uv_async_init(uv_default_loop(), &call_next_tick_async_, OnCallNextTick);
call_next_tick_async_.data = this;
}
AtomBindings::~AtomBindings() {
}
void AtomBindings::BindTo(v8::Isolate* isolate,
v8::Local<v8::Object> process) {
v8::V8::SetFatalErrorHandler(FatalErrorCallback);
mate::Dictionary dict(isolate, process);
dict.SetMethod("crash", &Crash);
dict.SetMethod("hang", &Hang);
dict.SetMethod("log", &Log);
#if defined(OS_POSIX)
dict.SetMethod("setFdLimit", &base::SetFdLimit);
#endif
dict.SetMethod("activateUvLoop",
base::Bind(&AtomBindings::ActivateUVLoop, base::Unretained(this)));
// Do not warn about deprecated APIs.
dict.Set("noDeprecation", true);
#if defined(MAS_BUILD)
dict.Set("mas", true);
#endif
mate::Dictionary versions;
if (dict.Get("versions", &versions)) {
versions.Set(ATOM_PROJECT_NAME, ATOM_VERSION_STRING);
versions.Set("atom-shell", ATOM_VERSION_STRING); // For compatibility.
versions.Set("chrome", CHROME_VERSION_STRING);
}
}
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;
node::Environment::TickInfo* tick_info = env->tick_info();
v8::Context::Scope context_scope(env->context());
if (tick_info->in_tick())
continue;
if (tick_info->length() == 0) {
env->isolate()->RunMicrotasks();
}
if (tick_info->length() == 0) {
tick_info->set_index(0);
continue;
}
tick_info->set_in_tick(true);
env->tick_callback_function()->Call(env->process_object(), 0, NULL);
tick_info->set_in_tick(false);
}
self->pending_next_ticks_.clear();
}
} // namespace atom