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 23 class 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(int signal_number) : signal_number_(signal_number) { 43 sigaction(signal_number, nullptr, &old_action_); 44 } 45 46 ~ScopedSignalHandler() { 47 sigaction(signal_number_, &old_action_, NULL); 48 } 49 50 private: 51 struct sigaction action_; 52 struct sigaction old_action_; 53 const int signal_number_; 54 }; 55 56 class ScopedSignalMask { 57 public: 58 ScopedSignalMask() { 59 sigprocmask(SIG_SETMASK, nullptr, &old_mask_); 60 } 61 62 ~ScopedSignalMask() { 63 sigprocmask(SIG_SETMASK, &old_mask_, nullptr); 64 } 65 66 private: 67 sigset_t old_mask_; 68 }; 69 70 #endif // _BIONIC_TESTS_SCOPED_SIGNAL_HANDLER_H 71
