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 
22 class ScopedSignalHandler {
23  public:
24   ScopedSignalHandler(int signal_number, void (*handler)(int), int sa_flags = 0)
signal_number_(signal_number)25       : signal_number_(signal_number) {
26     sigemptyset(&action_.sa_mask);
27     action_.sa_flags = sa_flags;
28     action_.sa_handler = handler;
29     sigaction(signal_number_, &action_, &old_action_);
30   }
31 
~ScopedSignalHandler()32   ~ScopedSignalHandler() {
33     sigaction(signal_number_, &old_action_, NULL);
34   }
35 
36  private:
37   struct sigaction action_;
38   struct sigaction old_action_;
39   const int signal_number_;
40 };
41 
42 #endif // _BIONIC_TESTS_SCOPED_SIGNAL_HANDLER_H
43