Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

LinuxÉ豸Çý¶¯¿ª·¢Ïê½â ±Ê¼Ç10 ÖжÏÓëʱÖÓ

ÖжϣºcpuÔÚÖ´ÐгÌÐòµÄ¹ý³ÌÖУ¬³öÏÖÁËijЩͻ·¢Ê¼þʱcpu±ØÐëÔÝÍ£Ö´Ðе±Ç°µÄ³ÌÐò£¬×ªÈ¥´¦ÀíÍ»·¢Ê¼þ£¬´¦ÀíÍê±ÏºócpuÓÖ·µ»ØÔ­³ÌÐò±»ÖжϵÄλÖò¢¼ÌÐøÖ´ÐÐ
 
¸ù¾ÝÖжÏÈë¿ÚÌø×ª·½·¨µÄ²»Í¬£¬ÖжϷÖΪÏòÁ¿ÖжϺͷÇÏòÁ¿Öжϡ£
²ÉÓÃÏòÁ¿ÖжϵÄcpuͨ³£Îª²»Í¬µÄÖжϷÖÅ䲻ͬµÄÖжϺţ¬µ±¼ì²âµ½Ä³ÖжϺŵÄÖжϵ½À´ºó£¬¾Í×Ô¶¯Ìø×ªµ½Óë¸ÃÖжϺŶÔÓ¦µÄµØÖ·Ö´ÐС£²»Í¬ÖжϺŵÄÖжÏÓͲ»Í¬µÄÈë¿ÚµØÖ·¡£
·ÇÏòÁ¿ÖжϵĶà¸öÖжϹ²ÏíÒ»¸öÈë¿ÚµØÖ·£¬½øÈë¸ÃÈë¿ÚµØÖ·ºóÔÙͨ¹ýÈí¼þÅжÏÖжϱê־ʶ±ð¾ßÌåÊÇÄĸöÖжÏ
Ò²¾ÍÊÇ˵£¬ÏòÁ¿ÖжÏÓÉÓ²¼þÌṩÖжϷþÎñ³ÌÐòÈë¿ÚµØÖ·£¬·ÇÏòÁ¿ÖжÏÓÉÈí¼þÌṩÈë¿ÚµØÖ·
 
Linux½«Öжϴ¦Àí³ÌÐò¶¥°ë²¿ºÍµ×°ë²¿£¬¶¥°ë²¿Íê³É¾¡¿ÉÄÜÉٵıȽϽô¼±µÄ¹¦ÄÜ£¬ËüÍùÍùÖ»ÊǼòµ¥µÄ¶ÁÈ¡¼Ä´æÆ÷µÄÖжÏ״̬²¢Çå³ýÖжϱêÖ¾ºó½øÐГµÇ¼ÇÖжϓµÄ¹¤×÷¡£”µÇ¼ÇÖжϓָ½«µ×°ë²¿´¦Àí³ÌÐò¹Òµ½µ×°ë²¿Ö´ÐжÓÁÐÖÐÈ¥
 
µ×°ë²¿¼¸ºõ×öÁËÖжϴ¦Àí³ÌÐòËùÓеÄÊÂÇ飬¶øÇÒ¿ÉÒÔ±»ÐÔµÄÖжϴò¶Ï£¬ÕâÊǺͶ¥°ë²¿×î´óµÄ²»Í¬
 
LinuxʵÏֵĵװ벿µÄ»úÖÆÖ÷ÒªÓÐtasklet¡¢¹¤×÷¶ÓÁкÍÈíÖжÏ
 
Ó²Öжϡ¢ÈíÖжϺÍÐźŵÄÇø±ð£º
Ó²ÖжÏʱÍⲿÉ豸¶ÔcpuµÄÖжϣ¬ÈíÖжÏͨ³£ÊÇÓ²ÖжϷþÎñ³ÌÐò¶ÔÄں˵ÄÖжϣ¬¶øÐźÅÔòÊÇÓÉÄںˣ¨»òÆäËû½ø³Ì£©¶Ôij¸ö½ø³ÌµÄÖжÏ


Ïà¹ØÎĵµ£º

Linux »ñȡϵͳʱ¼ä

1.ʱ¼ä±íʾ
ÔÚ³ÌÐòµ±ÖÐ,ÎÒÃǾ­³£ÒªÊä³öϵͳµ±Ç°µÄʱ¼ä,±ÈÈçÎÒÃÇʹÓÃdateÃüÁîµÄÊä³ö½á¹û¡£Õâ¸öʱºòÎÒÃÇ¿ÉÒÔʹÓÃÏÂÃæÁ½¸öº¯Êý
time_t time(time_t *tloc);                    //ʱ¼ä¾«¶ÈΪÃë
char *ctime(const time_ ......

LINUX ½ø³Ì¼ä ÐźÅ

#include <iostream>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <signal.h>
using namespace std;
extern char **environ;
void signal_handle(int signal_no){
cout << "sign:" &l ......

LinuxÇý¶¯Ö®ioctl

ÔÚÓû§¿Õ¼ä£¬Ê¹ÓÃioctlϵͳµ÷ÓÃÀ´¿ØÖÆÉ豸£¬Ô­ÐÍÈçÏ£º
int ioctl(int fd, unsigned long cmd, ...);
µÚÈý¸ö²ÎÊý²»±íʾһ¸ö±äÊýÄ¿µÄ²ÎÊý£¬¶øÊÇÒ»¸öÀàÐÍ¿ÉÑ¡µÄ²ÎÊý¡£µÚÈý¸ö²ÎÊýÒÀÀµÓÚ¿ØÖÆÃüÁһЩÃüÁî²»ÓòÎÊý£¬Ò»Ð©ÓÃÒ»¸öÕûÊýÖµ£¬Ò»Ð©Ê¹ÓÃÖ¸Õë
1¡¢ioctlº¯Êý¶¨ÒåÃüÁî
ÔÚ±àдioctl´úÂë֮ǰ£¬Ê×ÏÈÐèÒª¶¨ÒåÃüÁΪÁË·ÀÖ¹ ......

LinuxÉ豸Çý¶¯¿ª·¢Ïê½â ±Ê¼Ç5 LinuxÎļþÓëÉ豸ϵͳ

Ó¦ÓóÌÐòºÍVFSÖ®¼äµÄ½Ó¿ÚÊÇϵͳµ÷Ó㬶øVFSÓë´ÅÅÌÎļþϵͳÒÔ¼°ÆÕͨÉ豸֮¼äµÄ½Ó¿ÚÊÇfile_operations½á¹¹Ìå³ÉÔ±º¯Êý¡£ÓÉÓÚ×Ö·ûÉ豸µÄÉϲãûÓдÅÅÌÎļþϵͳ£¬ËùÒÔ×Ö·ûÉ豸µÄfile_operations³ÉÔ±º¯ÊýÖ±½ÓÓÉÉ豸Çý¶¯ÌṩÁË£¬file_operationsÕýÊÇ×Ö·ûÉ豸Çý¶¯µÄºËÐÄ£¬Èçͼ£º
 
¶ø¶Ô¿éÉ豸À´Ëµ£¬ext2¡¢fat¡¢jffs2µÈÎļþÏµÍ ......

LinuxÏÂselectºÍpollµÄÓ÷¨

select()º¯ÊýµÄ×÷ÓÃ
    ϵͳµ÷ÓÃselectºÍpollµÄºó¶ËʵÏÖ£¬ÓÃÕâÁ½¸öϵͳµ÷ÓÃÀ´²éѯÉ豸ÊÇ·ñ¿É¶Áд£¬»òÊÇ·ñ´¦ÓÚijÖÖ״̬¡£Èç¹ûpollΪ¿Õ£¬ÔòÇý¶¯É豸»á±»ÈÏΪ¼´¿É¶ÁÓÖ¿Éд£¬·µ»ØÖµÊÇÒ»¸ö״̬ÑÚÂë
ÈçºÎʹÓÃselect()º¯Êý?
    select()º¯ÊýµÄ½Ó¿ÚÖ÷ÒªÊǽ¨Á¢ÔÚÒ»ÖÖ½Ð'fd_set'ÀàÐ͵Ļù´¡ÉÏ¡£Ëü( ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ