55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
// Copyright (c) 2014 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 "shell/common/node_bindings_linux.h"
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#include <sys/epoll.h>
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namespace electron {
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NodeBindingsLinux::NodeBindingsLinux(BrowserEnvironment browser_env)
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: NodeBindings(browser_env), epoll_(epoll_create(1)) {
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int backend_fd = uv_backend_fd(uv_loop_);
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struct epoll_event ev = {0};
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ev.events = EPOLLIN;
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ev.data.fd = backend_fd;
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epoll_ctl(epoll_, EPOLL_CTL_ADD, backend_fd, &ev);
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}
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NodeBindingsLinux::~NodeBindingsLinux() {}
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void NodeBindingsLinux::RunMessageLoop() {
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// Get notified when libuv's watcher queue changes.
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uv_loop_->data = this;
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uv_loop_->on_watcher_queue_updated = OnWatcherQueueChanged;
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NodeBindings::RunMessageLoop();
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}
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// static
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void NodeBindingsLinux::OnWatcherQueueChanged(uv_loop_t* loop) {
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NodeBindingsLinux* self = static_cast<NodeBindingsLinux*>(loop->data);
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// We need to break the io polling in the epoll thread when loop's watcher
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// queue changes, otherwise new events cannot be notified.
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self->WakeupEmbedThread();
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}
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void NodeBindingsLinux::PollEvents() {
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int timeout = uv_backend_timeout(uv_loop_);
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// Wait for new libuv events.
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int r;
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do {
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struct epoll_event ev;
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r = epoll_wait(epoll_, &ev, 1, timeout);
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} while (r == -1 && errno == EINTR);
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}
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// static
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NodeBindings* NodeBindings::Create(BrowserEnvironment browser_env) {
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return new NodeBindingsLinux(browser_env);
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}
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} // namespace electron
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