arc: Remove components/arc/standalone

components/arc/standalone/service_helper.cc

-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "components/arc/standalone/service_helper.h"
-
-#include "base/bind.h"
-#include "base/files/file_util.h"
-#include "base/logging.h"
-#include "base/posix/eintr_wrapper.h"
-
-namespace arc {
-
-// static
-ServiceHelper* ServiceHelper::self_ = nullptr;
-
-ServiceHelper::ServiceHelper() {
-}
-
-ServiceHelper::~ServiceHelper() {
-  // Best efforts clean up, ignore the return values.
-  sigaction(SIGINT, &old_sigint_, NULL);
-  sigaction(SIGTERM, &old_sigterm_, NULL);
-}
-
-void ServiceHelper::Init(const base::Closure& closure) {
-  CHECK(!ServiceHelper::self_);
-  ServiceHelper::self_ = this;
-  closure_ = closure;
-
-  // Initialize pipe
-  int pipe_fd[2];
-  CHECK_EQ(0, pipe(pipe_fd));
-  read_fd_.reset(pipe_fd[0]);
-  write_fd_.reset(pipe_fd[1]);
-  CHECK(base::SetNonBlocking(write_fd_.get()));
-  watch_controller_ = base::FileDescriptorWatcher::WatchReadable(
-      read_fd_.get(), base::Bind(&ServiceHelper::OnFileCanReadWithoutBlocking,
-                                 base::Unretained(this)));
-
-  struct sigaction action = {};
-  CHECK_EQ(0, sigemptyset(&action.sa_mask));
-  action.sa_handler = ServiceHelper::TerminationHandler;
-  action.sa_flags = 0;
-
-  CHECK_EQ(0, sigaction(SIGINT, &action, &old_sigint_));
-  CHECK_EQ(0, sigaction(SIGTERM, &action, &old_sigterm_));
-}
-
-// static
-void ServiceHelper::TerminationHandler(int /* signum */) {
-  if (HANDLE_EINTR(write(self_->write_fd_.get(), "1", 1)) < 0) {
-    _exit(2);  // We still need to exit the program, but in a brute force way.
-  }
-}
-
-void ServiceHelper::OnFileCanReadWithoutBlocking() {
-  char c;
-  // We don't really care about the return value, since it indicates closing.
-  HANDLE_EINTR(read(read_fd_.get(), &c, 1));
-  closure_.Run();
-}
-
-}  // namespace arc