electron/atom/common/node_bindings_linux.cc

58 строки
1.5 KiB
C++

// Copyright (c) 2014 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "atom/common/node_bindings_linux.h"
#include <sys/epoll.h>
namespace atom {
NodeBindingsLinux::NodeBindingsLinux(bool is_browser)
: NodeBindings(is_browser),
epoll_(epoll_create(1)) {
int backend_fd = uv_backend_fd(uv_loop_);
struct epoll_event ev = { 0 };
ev.events = EPOLLIN;
ev.data.fd = backend_fd;
epoll_ctl(epoll_, EPOLL_CTL_ADD, backend_fd, &ev);
}
NodeBindingsLinux::~NodeBindingsLinux() {
}
void NodeBindingsLinux::RunMessageLoop() {
// Get notified when libuv's watcher queue changes.
uv_loop_->data = this;
uv_loop_->on_watcher_queue_updated = OnWatcherQueueChanged;
NodeBindings::RunMessageLoop();
}
// static
void NodeBindingsLinux::OnWatcherQueueChanged(uv_loop_t* loop) {
NodeBindingsLinux* self = static_cast<NodeBindingsLinux*>(loop->data);
// We need to break the io polling in the epoll thread when loop's watcher
// queue changes, otherwise new events cannot be notified.
self->WakeupEmbedThread();
}
void NodeBindingsLinux::PollEvents() {
int timeout = uv_backend_timeout(uv_loop_);
// Wait for new libuv events.
int r;
do {
struct epoll_event ev;
r = epoll_wait(epoll_, &ev, 1, timeout);
} while (r == -1 && errno == EINTR);
}
// static
NodeBindings* NodeBindings::Create(bool is_browser) {
return new NodeBindingsLinux(is_browser);
}
} // namespace atom