//
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// Copyright (C) 2012 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#include "update_engine/common/terminator.h"
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#include <cstdlib>
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namespace chromeos_update_engine {
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volatile sig_atomic_t Terminator::exit_status_ = 1; // default exit status
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volatile sig_atomic_t Terminator::exit_blocked_ = 0;
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volatile sig_atomic_t Terminator::exit_requested_ = 0;
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void Terminator::Init() {
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exit_blocked_ = 0;
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exit_requested_ = 0;
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signal(SIGTERM, HandleSignal);
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}
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void Terminator::Init(int exit_status) {
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exit_status_ = exit_status;
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Init();
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}
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void Terminator::Exit() {
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exit(exit_status_);
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}
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void Terminator::HandleSignal(int signum) {
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if (exit_blocked_ == 0) {
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Exit();
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}
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exit_requested_ = 1;
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}
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ScopedTerminatorExitUnblocker::~ScopedTerminatorExitUnblocker() {
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Terminator::set_exit_blocked(false);
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if (Terminator::exit_requested()) {
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Terminator::Exit();
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}
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}
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} // namespace chromeos_update_engine
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