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71 lines
1.7 KiB
71 lines
1.7 KiB
4 months ago
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/*
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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 ART_RUNTIME_SIGNAL_SET_H_
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#define ART_RUNTIME_SIGNAL_SET_H_
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#include <signal.h>
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#include <android-base/logging.h>
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#if defined(__GLIBC__)
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#define sigset64_t sigset_t
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#define sigemptyset64 sigemptyset
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#define sigaddset64 sigaddset
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#define pthread_sigmask64 pthread_sigmask
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#define sigwait64 sigwait
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#endif
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namespace art {
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class SignalSet {
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public:
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SignalSet() {
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if (sigemptyset64(&set_) == -1) {
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PLOG(FATAL) << "sigemptyset failed";
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}
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}
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void Add(int signal) {
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if (sigaddset64(&set_, signal) == -1) {
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PLOG(FATAL) << "sigaddset " << signal << " failed";
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}
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}
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void Block() {
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if (pthread_sigmask64(SIG_BLOCK, &set_, nullptr) != 0) {
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PLOG(FATAL) << "pthread_sigmask failed";
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}
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}
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int Wait() {
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// Sleep in sigwait() until a signal arrives. gdb causes EINTR failures.
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int signal_number;
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int rc = TEMP_FAILURE_RETRY(sigwait64(&set_, &signal_number));
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if (rc != 0) {
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PLOG(FATAL) << "sigwait failed";
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}
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return signal_number;
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}
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private:
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sigset64_t set_;
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};
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} // namespace art
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#endif // ART_RUNTIME_SIGNAL_SET_H_
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