| /** @file |
| |
| A brief file description |
| |
| @section license License |
| |
| 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. |
| */ |
| |
| /**************************************************************************** |
| |
| SocketManager.h |
| |
| Handle the allocation of the socket descriptor (fd) resource. |
| |
| |
| ****************************************************************************/ |
| |
| #pragma once |
| |
| #include "tscore/ink_platform.h" |
| #include "I_EventSystem.h" |
| #include "I_Thread.h" |
| |
| #ifndef SOCK_NONBLOCK |
| #define SOCK_NONBLOCK O_NONBLOCK |
| #endif |
| |
| #ifndef SOCK_CLOEXEC |
| #define SOCK_CLOEXEC O_CLOEXEC |
| #endif |
| |
| #ifndef MSG_FASTOPEN |
| #if defined(linux) |
| #define MSG_FASTOPEN 0x20000000 |
| #else |
| #define MSG_FASTOPEN 0 |
| #endif |
| #endif |
| |
| #define DEFAULT_OPEN_MODE 0644 |
| |
| class Thread; |
| extern int net_config_poll_timeout; |
| |
| #define SOCKET int |
| |
| /** Utility class for socket operations. |
| */ |
| struct SocketManager { |
| SocketManager(); |
| |
| // Test whether TCP Fast Open is supported on this host. |
| static bool fastopen_supported(); |
| |
| // result is the socket or -errno |
| SOCKET socket(int domain = AF_INET, int type = SOCK_STREAM, int protocol = 0); |
| SOCKET mc_socket(int domain = AF_INET, int type = SOCK_DGRAM, int protocol = 0, bool bNonBlocking = true); |
| |
| // result is the fd or -errno |
| int open(const char *path, int oflag = O_RDWR | O_NDELAY | O_CREAT, mode_t mode = DEFAULT_OPEN_MODE); |
| |
| // result is the number of bytes or -errno |
| int64_t read(int fd, void *buf, int len, void *pOLP = nullptr); |
| int64_t vector_io(int fd, struct iovec *vector, size_t count, int read_request, void *pOLP = nullptr); |
| int64_t readv(int fd, struct iovec *vector, size_t count); |
| int64_t read_vector(int fd, struct iovec *vector, size_t count, void *pOLP = nullptr); |
| int64_t pread(int fd, void *buf, int len, off_t offset, char *tag = nullptr); |
| |
| int recv(int s, void *buf, int len, int flags); |
| int recvfrom(int fd, void *buf, int size, int flags, struct sockaddr *addr, socklen_t *addrlen); |
| int recvmsg(int fd, struct msghdr *m, int flags, void *pOLP = nullptr); |
| |
| int64_t write(int fd, void *buf, int len, void *pOLP = nullptr); |
| int64_t writev(int fd, struct iovec *vector, size_t count); |
| int64_t write_vector(int fd, struct iovec *vector, size_t count, void *pOLP = nullptr); |
| int64_t pwrite(int fd, void *buf, int len, off_t offset, char *tag = nullptr); |
| |
| int send(int fd, void *buf, int len, int flags); |
| int sendto(int fd, void *buf, int len, int flags, struct sockaddr const *to, int tolen); |
| int sendmsg(int fd, struct msghdr *m, int flags, void *pOLP = nullptr); |
| int64_t lseek(int fd, off_t offset, int whence); |
| int fstat(int fd, struct stat *); |
| int unlink(char *buf); |
| int fsync(int fildes); |
| int ftruncate(int fildes, off_t length); |
| int lockf(int fildes, int function, off_t size); |
| int poll(struct pollfd *fds, unsigned long nfds, int timeout); |
| |
| #if TS_USE_EPOLL |
| int epoll_create(int size); |
| int epoll_close(int eps); |
| int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event); |
| int epoll_wait(int epfd, struct epoll_event *events, int maxevents, int timeout = net_config_poll_timeout); |
| #endif |
| |
| #if TS_USE_KQUEUE |
| int kqueue(); |
| int kevent(int kq, const struct kevent *changelist, int nchanges, struct kevent *eventlist, int nevents, |
| const struct timespec *timeout); |
| #endif |
| |
| #if TS_USE_PORT |
| int port_create(); |
| int port_associate(int port, int fd, uintptr_t obj, int events, void *user); |
| int port_dissociate(int port, int fd, uintptr_t obj); |
| int port_getn(int port, port_event_t *list, uint_t max, uint_t *nget, timespec_t *timeout); |
| #endif |
| |
| int shutdown(int s, int how); |
| int dup(int s); |
| |
| // result is the fd or -errno |
| int accept4(int s, struct sockaddr *addr, socklen_t *addrlen, int flags); |
| |
| // manipulate socket buffers |
| int get_sndbuf_size(int s); |
| int get_rcvbuf_size(int s); |
| int set_sndbuf_size(int s, int size); |
| int set_rcvbuf_size(int s, int size); |
| |
| int getsockname(int s, struct sockaddr *, socklen_t *); |
| |
| /** Close the socket. |
| @return 0 if successful, -errno on error. |
| */ |
| int close(int sock); |
| int ink_bind(int s, struct sockaddr const *name, int namelen, short protocol = 0); |
| |
| const size_t pagesize; |
| |
| virtual ~SocketManager(); |
| |
| // noncopyable: Just don't Do It. |
| SocketManager(SocketManager &) = delete; |
| SocketManager &operator=(SocketManager &) = delete; |
| }; |
| |
| extern SocketManager socketManager; |