1 /* 2 * Copyright (C) 2017 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 SCOPED_SIGNAL_BLOCKER_H 18 #define SCOPED_SIGNAL_BLOCKER_H 19 20 #include <signal.h> 21 22 #include "bionic_macros.h" 23 24 class ScopedSignalBlocker { 25 public: 26 explicit ScopedSignalBlocker() { 27 sigset64_t set; 28 sigfillset64(&set); 29 sigprocmask64(SIG_SETMASK, &set, &old_set_); 30 } 31 32 ~ScopedSignalBlocker() { 33 reset(); 34 } 35 36 void reset() { 37 sigprocmask64(SIG_SETMASK, &old_set_, nullptr); 38 } 39 40 private: 41 sigset64_t old_set_; 42 43 DISALLOW_COPY_AND_ASSIGN(ScopedSignalBlocker); 44 }; 45 46 #endif 47
