anon_inode:[eventpoll] 是 Linux 内核中一个常见的文件描述符(fd)类型,通常与 epoll 机制相关联。下面是对这一概念的详细解释: 解释什么是anon_inode: anon_inode 是 Linux 内核中的一个特殊文件系统,称为匿名 inode 文件系统。这种文件系统不关联到磁盘上的实际文件,而是由内核动态创建和管理。 anon_inode ...
以一个实例来说明,android init进程的fd 4是一个eventpoll anon file,有3个file注册到此eventpoll了,fd分别为6、7、8,6是一个signalfd anon file,7是一个socket file,8是/proc/1/mounts。所以fd 4 eventpoll file同时监视了fd 6、7、8 file epoll_event的产生。 console:/proc/1 # cat fdinfo/4 pos...
{568PLOG(FATAL) <<"failed to create signalfd";569}570571if(auto result = epoll->RegisterHandler(signal_fd, HandleSignalFd); !result) {572LOG(FATAL) <<result.error();573}574} 注: 因为init进程将SIGCHLD信号block了,init fork子进程时,子进程的task_struct.blocked将直接从父进程copy过来,所以在子...
if (events[n].data.fd == 0) { 读取标准输入 char buf[1024]; ssize_t len = read(0, buf, sizeof(buf)); if (len == -1) { perror("read"); return 1; } printf("Received: .*s", (int)len, buf); } } } return 0; } 总结 Eventpoll是Linux内核提供的一个高效事件通知机制,适用...
3.对所有Accepted-socket管理生命周期,这里利用系统的keepalive probes,若想实现业务层"心跳探测"只需将QSS_SIO_KEEPALIVE_VALS_TIMEOUT 改回系统默认的2小时.这里并不维护所有连接列表,当然你可以在/proc/getpid/fd下找到所有的socket fd.4.linux上的non-blocking socket的操作仍然依赖recv,send,不像windows上的wsa...
fd = pcap_get_selectable_fd(j->pcap); dprintf("pcap @ %p, selectable fd is %d", j->pcap, fd);while(event_poll(thread->sigterm,0) == FALSE && j->active) { tv.tv_sec =0; tv.tv_usec =5000; FD_ZERO(&rfds); FD_SET(pcap_get_selectable_fd(j->pcap), &rfds); ...
goto out_free_fd; } fd_install(fd, file);ep->file = file; fd_install(fd, file); return fd;out_free_fd:0 comments on commit 9802274 Please sign in to comment. Footer © 2024 GitHub, Inc. Footer navigation Terms Privacy Security Status Docs Contact Manage cookies Do not share my...
* The epnested_mutex is acquired when inserting an epoll fd onto another * epoll fd. We do this so that we walk the epoll tree and ensure that this * insertion does not create a cycle of epoll file descriptors, which * could lead to deadlock. We need a global mutex to prevent two...
本篇则重点说明selector,Selector(选择器)是Java NIO中能够检测一到多个NIO通道,并能够知晓通道是否为诸如读写事件做好准备的组件。这样,一个单独的线程可以管理多个channel,从而管理多个网络连接。 与selector联系紧密的是ServerSocketC... FM和FFM原理
* epoll fd. We do this so that we walk the epoll tree and ensure that this * insertion does not create a cycle of epoll file descriptors, which * could lead to deadlock. We need a global mutex to prevent two * simultaneous inserts (A into B and B into A) from racing and ...