poll select

编程技术  /  houtizong 发布于 3年前   119

aio相关
http://lse.sourceforge.net/io/aio.html

jfs
http://en.wikipedia.org/wiki/JFS_(file_system)
xfs
http://xfs.org/index.php/XFS_Papers_and_Documentation
------------javaeye挂了还是升级升的不支持chrome14---页面错乱发布了新的
参考http://frenchleaf.iteye.com/blog/779086
apue12章 ：
非阻塞io，
1.如果是调用o p e n以获得该描述符，则可指定O_NONBLOCK标志
2.对于已经打开的一个描述符，则可调用f c n t l打开O_NONBLOCK文件状态标志
源码指向fig14.1：/apue.2e/advio/nonblockw.c
./nonblockw </etc/termcap >temp.file

#include "apue.h"#include <errno.h>#include <fcntl.h>char    buf[500000];intmain(void){        int             ntowrite, nwrite;        char    *ptr;        ntowrite = read(STDIN_FILENO, buf, sizeof(buf));        fprintf(stderr, "read %d bytes\n", ntowrite);        set_fl(STDOUT_FILENO, O_NONBLOCK);      /* set nonblocking */        ptr = buf;        while (ntowrite > 0) {                errno = 0;                nwrite = write(STDOUT_FILENO, ptr, ntowrite);                fprintf(stderr, "nwrite = %d, errno = %d\n", nwrite, errno);                if (nwrite > 0) {                        ptr += nwrite;                        ntowrite -= nwrite;                }        }        clr_fl(STDOUT_FILENO, O_NONBLOCK);      /* clear nonblocking */        exit(0);}

flock锁：
fig14.6 -> lib/locktest.c