isapego commented on a change in pull request #9713: URL: https://github.com/apache/ignite/pull/9713#discussion_r781188925
########## File path: modules/platforms/cpp/network/os/linux/src/network/linux_async_client.cpp ########## @@ -0,0 +1,258 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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 <sys/socket.h> +#include <sys/types.h> +#include <netinet/tcp.h> +#include <netdb.h> +#include <sys/epoll.h> +#include <unistd.h> + +#include <algorithm> + +#include <ignite/common/utils.h> +#include <ignite/network/utils.h> + +#include "network/sockets.h" +#include "network/linux_async_client.h" + +namespace ignite +{ + namespace network + { + LinuxAsyncClient::LinuxAsyncClient(int fd, const EndPoint &addr, const TcpRange &range) : + state(State::CONNECTED), + fd(fd), + epoll(-1), + id(0), + addr(addr), + range(range), + sendPackets(), + sendCs(), + recvPacket(), + closeErr(IgniteError::IGNITE_SUCCESS) + { + // No-op. + } + + LinuxAsyncClient::~LinuxAsyncClient() + { + Shutdown(0); + + Close(); + } + + bool LinuxAsyncClient::Shutdown(const IgniteError* err) + { + common::concurrent::CsLockGuard lock(sendCs); + if (state != State::CONNECTED) + return false; + + closeErr = err ? *err : IgniteError(IgniteError::IGNITE_ERR_GENERIC, "Connection closed by application"); + shutdown(fd, SHUT_RDWR); + state = State::SHUTDOWN; + + return true; + } + + bool LinuxAsyncClient::Close() + { + State::Type stateBefore = state; + + if (state != State::CLOSED) + { + StopMonitoring(); + close(fd); + fd = -1; + state = State::CLOSED; + } + + return stateBefore == State::CONNECTED; + } + + bool LinuxAsyncClient::Send(const DataBuffer& data) + { + common::concurrent::CsLockGuard lock(sendCs); + + sendPackets.push_back(data); + + if (sendPackets.size() > 1) + return true; + + return SendNextPacketLocked(); + } + + bool LinuxAsyncClient::SendNextPacketLocked() + { + if (sendPackets.empty()) + return true; + + DataBuffer& packet = sendPackets.front(); + + ssize_t ret = send(fd, packet.GetData(), packet.GetSize(), 0); + if (ret < 0) + return false; + + packet.Skip(static_cast<int32_t>(ret)); + + EnableSendNotifications(); + + return true; + } + + DataBuffer LinuxAsyncClient::Receive() + { + using namespace impl::interop; + + if (!recvPacket.IsValid()) + { + recvPacket = SP_InteropMemory(new InteropUnpooledMemory(BUFFER_SIZE)); + recvPacket.Get()->Length(BUFFER_SIZE); + } + + ssize_t res = recv(fd, recvPacket.Get()->Data(), recvPacket.Get()->Length(), 0); + if (res < 0) + return DataBuffer(); + + return DataBuffer(recvPacket, 0, static_cast<int32_t>(res)); + } + + bool LinuxAsyncClient::StartMonitoring(int epoll0) + { + if (epoll0 < 0) + return false; + + epoll_event event; + std::memset(&event, 0, sizeof(event)); + event.data.ptr = this; + event.events = EPOLLIN | EPOLLOUT | EPOLLRDHUP; + + int res = epoll_ctl(epoll0, EPOLL_CTL_ADD, fd, &event); + if (res < 0) + return false; + + epoll = epoll0; + + return true; + } + + void LinuxAsyncClient::StopMonitoring() + { + epoll_event event; + std::memset(&event, 0, sizeof(event)); + + epoll_ctl(epoll, EPOLL_CTL_DEL, fd, &event); + } + + void LinuxAsyncClient::EnableSendNotifications() + { + epoll_event event; + std::memset(&event, 0, sizeof(event)); + event.data.ptr = this; + event.events = EPOLLIN | EPOLLOUT | EPOLLRDHUP; + + epoll_ctl(epoll, EPOLL_CTL_MOD, fd, &event); + } + + void LinuxAsyncClient::DisableSendNotifications() + { + epoll_event event; + std::memset(&event, 0, sizeof(event)); + event.data.ptr = this; + event.events = EPOLLIN | EPOLLRDHUP; + + epoll_ctl(epoll, EPOLL_CTL_MOD, fd, &event); + } + + bool LinuxAsyncClient::ProcessSent() + { + common::concurrent::CsLockGuard lock(sendCs); + + if (sendPackets.empty()) + { + DisableSendNotifications(); + + return true; + } + + DataBuffer& front = sendPackets.front(); + + if (front.IsEmpty()) + sendPackets.pop_front(); + + return SendNextPacketLocked(); + } + } +} + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + Review comment: Thanks! -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
