refactor: rename the atom directory to shell

shell/common/node_bindings_linux.cc

@@ -0,0 +1,55 @@
+// 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(BrowserEnvironment browser_env)
+    : NodeBindings(browser_env), 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(BrowserEnvironment browser_env) {
+  return new NodeBindingsLinux(browser_env);
+}
+
+}  // namespace atom