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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.
*/
#ifndef _BIONIC_TESTS_SCOPED_SIGNAL_HANDLER_H
#define _BIONIC_TESTS_SCOPED_SIGNAL_HANDLER_H
#include <signal.h>
#include <string.h>
class ScopedSignalHandler {
public:
ScopedSignalHandler(int signal_number, void (*handler)(int), int sa_flags = 0)
: signal_number_(signal_number) {
memset(&action_, 0, sizeof(action_));
action_.sa_flags = sa_flags;
action_.sa_handler = handler;
sigaction(signal_number_, &action_, &old_action_);
}
ScopedSignalHandler(int signal_number, void (*action)(int, siginfo_t*, void*),
int sa_flags = SA_SIGINFO)
: signal_number_(signal_number) {
memset(&action_, 0, sizeof(action_));
action_.sa_flags = sa_flags;
action_.sa_sigaction = action;
sigaction(signal_number_, &action_, &old_action_);
}
ScopedSignalHandler(int signal_number) : signal_number_(signal_number) {
sigaction(signal_number, nullptr, &old_action_);
}
~ScopedSignalHandler() {
sigaction(signal_number_, &old_action_, NULL);
}
private:
struct sigaction action_;
struct sigaction old_action_;
const int signal_number_;
};
class ScopedSignalMask {
public:
ScopedSignalMask() {
sigprocmask(SIG_SETMASK, nullptr, &old_mask_);
}
~ScopedSignalMask() {
sigprocmask(SIG_SETMASK, &old_mask_, nullptr);
}
private:
sigset_t old_mask_;
};
#endif // _BIONIC_TESTS_SCOPED_SIGNAL_HANDLER_H
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