| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ART_RUNTIME_SIGNAL_SET_H_ |
| #define ART_RUNTIME_SIGNAL_SET_H_ |
| |
| #include <signal.h> |
| |
| #include <android-base/logging.h> |
| |
| #if defined(__GLIBC__) |
| #define sigset64_t sigset_t |
| #define sigemptyset64 sigemptyset |
| #define sigaddset64 sigaddset |
| #define pthread_sigmask64 pthread_sigmask |
| #define sigwait64 sigwait |
| #endif |
| |
| namespace art { |
| |
| class SignalSet { |
| public: |
| SignalSet() { |
| if (sigemptyset64(&set_) == -1) { |
| PLOG(FATAL) << "sigemptyset failed"; |
| } |
| } |
| |
| void Add(int signal) { |
| if (sigaddset64(&set_, signal) == -1) { |
| PLOG(FATAL) << "sigaddset " << signal << " failed"; |
| } |
| } |
| |
| void Block() { |
| if (pthread_sigmask64(SIG_BLOCK, &set_, nullptr) != 0) { |
| PLOG(FATAL) << "pthread_sigmask failed"; |
| } |
| } |
| |
| int Wait() { |
| // Sleep in sigwait() until a signal arrives. gdb causes EINTR failures. |
| int signal_number; |
| int rc = TEMP_FAILURE_RETRY(sigwait64(&set_, &signal_number)); |
| if (rc != 0) { |
| PLOG(FATAL) << "sigwait failed"; |
| } |
| return signal_number; |
| } |
| |
| private: |
| sigset64_t set_; |
| }; |
| |
| } // namespace art |
| |
| #endif // ART_RUNTIME_SIGNAL_SET_H_ |