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