85 lines
2.0 KiB
C++
85 lines
2.0 KiB
C++
/*
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* Copyright 2019 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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#include "os/thread.h"
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#include <fcntl.h>
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#include <sys/syscall.h>
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#include <unistd.h>
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#include <cerrno>
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#include <cstring>
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#include "os/log.h"
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namespace bluetooth {
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namespace os {
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namespace {
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constexpr int kRealTimeFifoSchedulingPriority = 1;
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}
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Thread::Thread(const std::string& name, const Priority priority)
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: name_(name), reactor_(), running_thread_(&Thread::run, this, priority) {}
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void Thread::run(Priority priority) {
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if (priority == Priority::REAL_TIME) {
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struct sched_param rt_params = {.sched_priority = kRealTimeFifoSchedulingPriority};
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auto linux_tid = static_cast<pid_t>(syscall(SYS_gettid));
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int rc;
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RUN_NO_INTR(rc = sched_setscheduler(linux_tid, SCHED_FIFO, &rt_params));
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if (rc != 0) {
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LOG_ERROR("unable to set SCHED_FIFO priority: %s", strerror(errno));
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}
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}
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reactor_.Run();
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}
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Thread::~Thread() {
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Stop();
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}
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bool Thread::Stop() {
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std::lock_guard<std::mutex> lock(mutex_);
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ASSERT(std::this_thread::get_id() != running_thread_.get_id());
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if (!running_thread_.joinable()) {
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return false;
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}
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reactor_.Stop();
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running_thread_.join();
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return true;
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}
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bool Thread::IsSameThread() const {
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return std::this_thread::get_id() == running_thread_.get_id();
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}
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Reactor* Thread::GetReactor() const {
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return &reactor_;
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}
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std::string Thread::GetThreadName() const {
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return name_;
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}
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std::string Thread::ToString() const {
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return "Thread " + name_;
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}
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} // namespace os
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} // namespace bluetooth
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