select return
select() 授予你同時監視多個sockets 的權力，它會告訴你哪些sockets 已經有 ..... file descriptors } // END for( ; ; )--and you thought it would never end! return 0; } ,On success, select() and pselect() return the number of file descriptors contained in the three returned descriptor sets. So if only one file descriptor triggers the ... ,if (select(nfds, readfds, writefds, exceptfds, timeout) < 0) fprintf(stderr, "%s-n", ... Note: This function is not thread safe, because it shares a return buffer across all ... ,Use RETURN QUERY : CREATE OR REPLACE FUNCTION word_frequency(_max_tokens int) RETURNS TABLE ( txt text -- visible as OUT parameter inside ... ,因為我不懂select是用什麼去判別資料是否準備好: 還請各位先進指點一番，謝謝給你看我很久以前寫的/** @brief 更新socket的狀態@return 是否 ... , 當搭配預存程序來使用時，RETURN 無法傳回Null 值。 ... PRINT 'You must give a user name' RETURN END ELSE BEGIN SELECT o.name, o.id, ...,跳到 Return Value - The select function returns the total number of socket handles that are ready and contained in the fd_set structures, zero if the time ... ,int select(int maxfd, fd_set *readfds, fd_set *writefds, fe_set *exceptfds, const .... return 1; /* 如果myset的所有元素都為0，說明FD (File descript)集為空，則函數 ... ,FD_ISSET() tests to see if a file descriptor is part of the set; this is useful after select() returns. nfds should be set to the highest-numbered file descriptor in any of ... ,select() (or pselect()) is used to efficiently monitor multiple file descriptors, ... A signal will cause the select() (or pse‐ lect()) call to return with errno set to EINTR.
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 select return 相關參考資料
7.2. select()：同步IO 多工- Beej's Guide to Network Programming 正體 ...
select() 授予你同時監視多個sockets 的權力，它會告訴你哪些sockets 已經有 ..... file descriptors } // END for( ; ; )--and you thought it would never end! return 0; } http://beej-zhtw.netdpi.net c select() function always return 1 - Stack Overflow
On success, select() and pselect() return the number of file descriptors contained in the three returned descriptor sets. So if only one file descriptor triggers the ... https://stackoverflow.com explain_select(3): explain select errors - Linux man page
if (select(nfds, readfds, writefds, exceptfds, timeout) < 0) fprintf(stderr, "%s-n", ... Note: This function is not thread safe, because it shares a return buffer across all ... https://linux.die.net How to return result of a SELECT inside a function in PostgreSQL ...
Use RETURN QUERY : CREATE OR REPLACE FUNCTION word_frequency(_max_tokens int) RETURNS TABLE ( txt text -- visible as OUT parameter inside ... https://stackoverflow.com Re: [問題] select read & write同一fd - 看板C_and_CPP - 批踢踢實業坊
因為我不懂select是用什麼去判別資料是否準備好: 還請各位先進指點一番，謝謝給你看我很久以前寫的/** @brief 更新socket的狀態@return 是否 ... https://www.ptt.cc RETURN (Transact-SQL) - Microsoft Docs
當搭配預存程序來使用時，RETURN 無法傳回Null 值。 ... PRINT 'You must give a user name' RETURN END ELSE BEGIN SELECT o.name, o.id, ... https://docs.microsoft.com select function | Microsoft Docs
跳到 Return Value - The select function returns the total number of socket handles that are ready and contained in the fd_set structures, zero if the time ... https://docs.microsoft.com Select()系統調用及文件描述符集fd_set的應用@ Bret. Blogger :: 痞客邦::
int select(int maxfd, fd_set *readfds, fd_set *writefds, fe_set *exceptfds, const .... return 1; /* 如果myset的所有元素都為0，說明FD (File descript)集為空，則函數 ... http://bkboy.pixnet.net select(2) - Linux manual page - man7.org
FD_ISSET() tests to see if a file descriptor is part of the set; this is useful after select() returns. nfds should be set to the highest-numbered file descriptor in any of ... http://man7.org select_tut(2) - Linux manual page - man7.org
select() (or pselect()) is used to efficiently monitor multiple file descriptors, ... A signal will cause the select() (or pse‐ lect()) call to return with errno set to EINTR. http://man7.org |