diff options
Diffstat (limited to 'grpc/src/core/lib/iomgr/poller/eventmanager_libuv.cc')
-rw-r--r-- | grpc/src/core/lib/iomgr/poller/eventmanager_libuv.cc | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/grpc/src/core/lib/iomgr/poller/eventmanager_libuv.cc b/grpc/src/core/lib/iomgr/poller/eventmanager_libuv.cc deleted file mode 100644 index c34430ae..00000000 --- a/grpc/src/core/lib/iomgr/poller/eventmanager_libuv.cc +++ /dev/null @@ -1,88 +0,0 @@ -/* - * - * Copyright 2019 gRPC authors. - * - * 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. - * - */ - -#include <grpc/support/port_platform.h> - -#include "src/core/lib/iomgr/poller/eventmanager_libuv.h" - -#include <grpc/support/time.h> - -grpc::experimental::LibuvEventManager::Options::Options() : num_workers_(-1) {} -grpc::experimental::LibuvEventManager::Options::Options(int num_workers) - : num_workers_(num_workers) {} - -grpc::experimental::LibuvEventManager::LibuvEventManager(const Options& options) - : options_(options) { - int num_workers = options_.num_workers(); - // Number of workers can't be 0 if we do not accept thread donation. - // TODO(guantaol): replaces the hard-coded number with a flag. - if (num_workers <= 0) num_workers = 32; - - for (int i = 0; i < num_workers; i++) { - workers_.emplace_back( - options_.thread_name_prefix().c_str(), - [](void* em) { static_cast<LibuvEventManager*>(em)->RunWorkerLoop(); }, - this); - workers_.back().Start(); - } -} - -grpc::experimental::LibuvEventManager::~LibuvEventManager() { - Shutdown(); - for (auto& th : workers_) { - th.Join(); - } -} - -void grpc::experimental::LibuvEventManager::RunWorkerLoop() { - while (true) { - // TODO(guantaol): extend the worker loop with real work. - if (ShouldStop()) return; - gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC), - gpr_time_from_micros(10, GPR_TIMESPAN))); - } -} - -bool grpc::experimental::LibuvEventManager::ShouldStop() { - return should_stop_.Load(grpc_core::MemoryOrder::ACQUIRE) != 0; -} - -void grpc::experimental::LibuvEventManager::Shutdown() { - if (should_stop_.Load(grpc_core::MemoryOrder::ACQUIRE)) { - return; // Already shut down. - } - - { - grpc_core::MutexLock lock(&shutdown_mu_); - while (shutdown_refcount_.Load(grpc_core::MemoryOrder::ACQUIRE) > 0) { - shutdown_cv_.Wait(&shutdown_mu_); - } - } - should_stop_.Store(true, grpc_core::MemoryOrder::RELEASE); -} - -void grpc::experimental::LibuvEventManager::ShutdownRef() { - shutdown_refcount_.FetchAdd(1, grpc_core::MemoryOrder::RELAXED); -} - -void grpc::experimental::LibuvEventManager::ShutdownUnref() { - if (shutdown_refcount_.FetchSub(1, grpc_core::MemoryOrder::ACQ_REL) == 1) { - grpc_core::MutexLock lock(&shutdown_mu_); - shutdown_cv_.Signal(); - } -} |