fcntl nonblock
我一直在阅读开放组织网站上fcntl, ,int Server::recvtimeout(int s, char *buf, int len, int timeout) //Check if non-blocking fcntl(s, F_SETFL, O_NONBLOCK); int flags = fcntl(s, F_GETFD); if ((flags ... ,if (-1 == (flags = fcntl(fd, F_GETFL, 0))) flags = 0; return fcntl(fd, F_SETFL, flags | O_NONBLOCK); #else /* Otherwise, use the old way of doing it */ flags = 1; return ... , You cannot make such system calls non-blocking; rather, you can make the file descriptor they work on non-blocking fcntl(fd, F_SETFL ...,int fds[2]; pipe(fds); int fd0_dup = dup(fds[0]); fcntl(fd0_dup, F_SETFL, fcntl(fd0_dup, F_GETFL) | O_NONBLOCK);. Now both fd0_dup and fds[0] refer to the same ... ,fcntl() performs one of the operations described below on the open file ... only the O_APPEND, O_ASYNC, O_DIRECT, O_NOATIME, and O_NONBLOCK flags. , Prior to standardization there was ioctl( ... FIONBIO ... ) and fcntl( ... O_NDELAY ... ) , but these behaved inconsistently between systems, and ...,#include <sys/unistd.h> #include <sys/fcntl.h> int fcntl(int s, int cmd, long arg); 說明 ... O_NONBLOCK, 將socket 設定為non-blocking，細節請參考blocking 章節。 ,sockfd = socket ( PF_INET , SOCK_STREAM , 0 ); fcntl ( sockfd , F_SETFL , O_NONBLOCK ); . . . 將socket 設定為non-blocking（非阻塞），你就能"poll（輪詢）" socket ...
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 fcntl nonblock 相關參考資料
O_NONBLOCK是否正在设置文件描述符或者基础文件的属性 ...
我一直在阅读开放组织网站上fcntl, https://hant-kb.kutu66.com 如何修改recv以实现io非阻塞？_nonblocking_酷徒编程知识库
int Server::recvtimeout(int s, char *buf, int len, int timeout) //Check if non-blocking fcntl(s, F_SETFL, O_NONBLOCK); int flags = fcntl(s, F_GETFD); if ((flags ... https://hant-kb.kutu66.com Introduction to non-blocking IO - Dan Kegel
if (-1 == (flags = fcntl(fd, F_GETFL, 0))) flags = 0; return fcntl(fd, F_SETFL, flags | O_NONBLOCK); #else /* Otherwise, use the old way of doing it */ flags = 1; return ... http://www.kegel.com How to set read() to non-blocking mode - Stack Overflow
You cannot make such system calls non-blocking; rather, you can make the file descriptor they work on non-blocking fcntl(fd, F_SETFL ... https://stackoverflow.com Is O_NONBLOCK being set a property of the file descriptor or ...
int fds[2]; pipe(fds); int fd0_dup = dup(fds[0]); fcntl(fd0_dup, F_SETFL, fcntl(fd0_dup, F_GETFL) | O_NONBLOCK);. Now both fd0_dup and fds[0] refer to the same ... https://stackoverflow.com fcntl(2) - Linux manual page - Michael Kerrisk - man7.org
fcntl() performs one of the operations described below on the open file ... only the O_APPEND, O_ASYNC, O_DIRECT, O_NOATIME, and O_NONBLOCK flags. https://man7.org UNIX nonblocking IO: O_NONBLOCK vs. FIONBIO - Stack ...
Prior to standardization there was ioctl( ... FIONBIO ... ) and fcntl( ... O_NDELAY ... ) , but these behaved inconsistently between systems, and ... https://stackoverflow.com 9.11. fcntl() - Beej's Guide to Network Programming 正體中文版
#include <sys/unistd.h> #include <sys/fcntl.h> int fcntl(int s, int cmd, long arg); 說明 ... O_NONBLOCK, 將socket 設定為non-blocking，細節請參考blocking 章節。 http://beej-zhtw.netdpi.net 7.1. Blocking（阻塞） - Beej's Guide to Network Programming ...
sockfd = socket ( PF_INET , SOCK_STREAM , 0 ); fcntl ( sockfd , F_SETFL , O_NONBLOCK ); . . . 將socket 設定為non-blocking（非阻塞），你就能"poll（輪詢）" socket ... http://beej-zhtw.netdpi.net |