1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef _BIONIC_TESTS_SCOPED_SIGNAL_HANDLER_H
18#define _BIONIC_TESTS_SCOPED_SIGNAL_HANDLER_H
19
20#include <signal.h>
21#include <string.h>
22
23class ScopedSignalHandler {
24 public:
25  ScopedSignalHandler(int signal_number, void (*handler)(int), int sa_flags = 0)
26      : signal_number_(signal_number) {
27    memset(&action_, 0, sizeof(action_));
28    action_.sa_flags = sa_flags;
29    action_.sa_handler = handler;
30    sigaction(signal_number_, &action_, &old_action_);
31  }
32
33  ScopedSignalHandler(int signal_number, void (*action)(int, siginfo_t*, void*),
34                      int sa_flags = SA_SIGINFO)
35      : signal_number_(signal_number) {
36    memset(&action_, 0, sizeof(action_));
37    action_.sa_flags = sa_flags;
38    action_.sa_sigaction = action;
39    sigaction(signal_number_, &action_, &old_action_);
40  }
41
42  ~ScopedSignalHandler() {
43    sigaction(signal_number_, &old_action_, NULL);
44  }
45
46 private:
47  struct sigaction action_;
48  struct sigaction old_action_;
49  const int signal_number_;
50};
51
52#endif // _BIONIC_TESTS_SCOPED_SIGNAL_HANDLER_H
53