5375bf6398
Implement the legacy SysV signal handling functions sighold(), sigignore(), sigpause(), sigrelse(), and sigset() in terms of the newer POSIX signal APIs. As of POSIX 2013 the SysV signal APIs are deprecated but still required. Change-Id: I4ca40e3d706605a7d1a30dc76c78b2b24586387d Signed-off-by: Greg Hackmann <ghackmann@google.com>
70 lines
2 KiB
C++
70 lines
2 KiB
C++
/*
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* Copyright (C) 2012 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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#ifndef _BIONIC_TESTS_SCOPED_SIGNAL_HANDLER_H
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#define _BIONIC_TESTS_SCOPED_SIGNAL_HANDLER_H
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#include <signal.h>
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#include <string.h>
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class ScopedSignalHandler {
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public:
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ScopedSignalHandler(int signal_number, void (*handler)(int), int sa_flags = 0)
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: signal_number_(signal_number) {
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memset(&action_, 0, sizeof(action_));
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action_.sa_flags = sa_flags;
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action_.sa_handler = handler;
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sigaction(signal_number_, &action_, &old_action_);
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}
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ScopedSignalHandler(int signal_number, void (*action)(int, siginfo_t*, void*),
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int sa_flags = SA_SIGINFO)
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: signal_number_(signal_number) {
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memset(&action_, 0, sizeof(action_));
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action_.sa_flags = sa_flags;
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action_.sa_sigaction = action;
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sigaction(signal_number_, &action_, &old_action_);
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}
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ScopedSignalHandler(int signal_number) : signal_number_(signal_number) {
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sigaction(signal_number, nullptr, &old_action_);
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}
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~ScopedSignalHandler() {
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sigaction(signal_number_, &old_action_, NULL);
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}
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private:
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struct sigaction action_;
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struct sigaction old_action_;
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const int signal_number_;
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};
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class ScopedSignalMask {
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public:
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ScopedSignalMask() {
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sigprocmask(SIG_SETMASK, nullptr, &old_mask_);
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}
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~ScopedSignalMask() {
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sigprocmask(SIG_SETMASK, &old_mask_, nullptr);
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}
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private:
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sigset_t old_mask_;
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};
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#endif // _BIONIC_TESTS_SCOPED_SIGNAL_HANDLER_H
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