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50 lines
1.2 KiB
50 lines
1.2 KiB
/* |
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* Copyright (C) 2017 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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#pragma once |
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#include <signal.h> |
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#include "bionic_macros.h" |
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class ScopedSignalBlocker { |
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public: |
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// Block all signals. |
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explicit ScopedSignalBlocker() { |
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sigset64_t set; |
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sigfillset64(&set); |
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sigprocmask64(SIG_BLOCK, &set, &old_set_); |
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} |
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// Block just the specified signal. |
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explicit ScopedSignalBlocker(int signal) { |
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sigset64_t set = {}; |
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sigaddset64(&set, signal); |
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sigprocmask64(SIG_BLOCK, &set, &old_set_); |
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} |
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~ScopedSignalBlocker() { |
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reset(); |
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} |
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void reset() { |
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sigprocmask64(SIG_SETMASK, &old_set_, nullptr); |
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} |
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sigset64_t old_set_; |
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BIONIC_DISALLOW_COPY_AND_ASSIGN(ScopedSignalBlocker); |
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};
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