Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

linux Ïß³ÌÓë½ø³Ì

1£®4 Ï̴߳´½¨µÄLinuxʵÏÖ
ÎÒÃÇÖªµÀ£¬LinuxµÄÏß³ÌʵÏÖÊÇÔÚºËÍâ½øÐеģ¬ºËÄÚÌṩµÄÊÇ´´½¨½ø³ÌµÄ½Ó¿Údo_fork()¡£ÄÚºËÌṩÁËÁ½¸öϵͳµ÷ÓÃ__clone()ºÍfork ()£¬×îÖÕ¶¼Óò»Í¬µÄ²ÎÊýµ÷ÓÃdo_fork()ºËÄÚAPI¡£µ±È»£¬ÒªÏëʵÏÖỊ̈߳¬Ã»ÓкËÐĶԶà½ø³Ì£¨ÆäʵÊÇÇáÁ¿¼¶½ø³Ì£©¹²ÏíÊý¾Ý¶ÎµÄÖ§³ÖÊDz»Ðеģ¬Òò´Ë£¬do_fork()ÌṩÁ˺ܶà²ÎÊý£¬°üÀ¨CLONE_VM£¨¹²ÏíÄÚ´æ¿Õ¼ä£©¡¢CLONE_FS£¨¹²ÏíÎļþϵͳÐÅÏ¢£©¡¢CLONE_FILES£¨¹²ÏíÎļþÃèÊö·û±í£©¡¢CLONE_SIGHAND£¨¹²ÏíÐźžä±ú±í£©ºÍCLONE_PID£¨¹²Ïí½ø³ÌID£¬½ö¶ÔºËÄÚ½ø³Ì£¬¼´0ºÅ½ø³ÌÓÐЧ£©¡£µ±Ê¹ÓÃforkϵͳµ÷ÓÃʱ£¬Äں˵÷ÓÃdo_fork()²»Ê¹ÓÃÈκι²ÏíÊôÐÔ£¬½ø³ÌÓµÓжÀÁ¢µÄÔËÐл·¾³£¬¶øʹÓÃpthread_create()À´´´½¨Ïß³Ìʱ,Ôò×îÖÕÉèÖÃÁËËùÓÐÕâЩÊôÐÔÀ´µ÷ÓÃ__clone()£¬¶øÕâЩ²ÎÊýÓÖÈ«²¿´«¸øºËÄÚµÄdo_fork()£¬´Ó¶ø´´½¨µÄ"½ø³Ì"ÓµÓй²ÏíµÄÔËÐл·¾³£¬Ö»ÓÐÕ»ÊǶÀÁ¢µÄ£¬ÓÉ __clone()´«Èë¡£
LinuxÏß³ÌÔÚºËÄÚÊÇÒÔÇáÁ¿¼¶½ø³ÌµÄÐÎʽ´æÔڵģ¬ÓµÓжÀÁ¢µÄ½ø³Ì±íÏ¶øËùÓеĴ´½¨¡¢Í¬²½¡¢É¾³ýµÈ²Ù×÷¶¼ÔÚºËÍâpthread¿âÖнøÐС£pthread ¿âʹÓÃÒ»¸ö¹ÜÀíỊ̈߳¨__pthread_manager()£¬Ã¿¸ö½ø³Ì¶ÀÁ¢ÇÒΨһ£©À´¹ÜÀíÏ̵߳Ĵ´½¨ºÍÖÕÖ¹£¬ÎªÏ̷߳ÖÅäÏß³ÌID£¬·¢ËÍÏß³ÌÏà¹ØµÄÐźţ¨±ÈÈçCancel£©£¬¶øÖ÷Ị̈߳¨pthread_create()£©µÄµ÷ÓÃÕßÔòͨ¹ý¹ÜµÀ½«ÇëÇóÐÅÏ¢´«¸ø¹ÜÀíÏ̡߳£


Ïà¹ØÎĵµ£º

[תÌû]LinuxÇý¶¯¿ª·¢Ñ§Ï°µÄһЩ±ØÒª²½Öè

 1. ѧ»áд¼òµ¥µÄmakefile
2. ±àһЩӦÓÃ
³ÌÐò
£¬¿ÉÒÔÓÃmakefileÅÜÆðÀ´
3. ѧ»áдÇý¶¯
µÄmakefile
4. дһ¼òµ¥charÇý¶¯£¬makefile±àÒëͨ¹ý£¬¿ÉÒÔinsmod£¬ lsmod£¬ rmmod. ÔÚÇý¶¯µÄinitº¯ÊýÀï´òÓ¡hello world£¬insmodºóÓ¦¸ÃÄܹ»Í¨¹ýdmesg¿´µ½Êä³ö
¡£
5. дһÍêÕûÇý¶¯£¬ ¼ÓÉÏread£¬ write£¬ ioctl£¬ pollingµÈ¸ ......

Linux²é¿´ÏµÍ³×´Ì¬

Linux²é¿´ÏµÍ³×´Ì¬
Ô­ÎÄ:http://www.kklinux.com/html/linuxwangluojishu/linuxxitongguanliyuan/200903/13-4304.html
1¡£ÈçºÎ²é¿´ÏµÍ³µ±Ç°µÄ¸ºÔØ£¿
  
   ·½·¨£ºÊ¹Óà top ÃüÁî
   [Ç°5ÐнâÊÍ]
   µÚÒ»ÐУº¡¾ÏµÍ³¸Å¿ö¡¿µ±Ç°Ê±¼ä¡¢ÏµÍ³Æô¶¯Ê±¼ä¡¢µ±Ç°ÏµÍ³µÇ¼Óû§ÊýÄ¿¡¢Æ½¾ ......

linuxµÄfreeÃüÁî

 [root@nonamelinux ~]# free
total used free shared buffers cached
Mem: 386024 377116 8908 0 21280 155468
-/+ buffers/cache: 200368 185656
Swap: 393552 0 393552
ÏÂÃæÊǶÔÕâЩÊýÖµµÄ½âÊÍ£º
µÚ¶þÐÐ(mem)£º
total:×ܼÆÎïÀíÄÚ´æµÄ´óС¡£
used:ÒÑʹÓöà´ó¡£
free:¿ÉÓÃÓжàÉÙ¡£
Shared:¶à¸ö½ø³Ì¹²ÏíµÄÄÚ ......

[ÕûÀí]Linux³£ÓÃÃüÁî

Îļþϵͳ¹ÒÔØ£ºmount
¸ñʽ£ºmount [-²ÎÊý] [É豸Ãû³Æ] [¹ÒÔصã]
ÆäÖг£ÓõIJÎÊý£º
¡¡¡¡ -t  Ö¸¶¨É豸µÄÎļþϵͳÀàÐÍ£¬³£¼ûµÄÓУº
¡¡¡¡      minix linux×îÔçʹÓõÄÎļþϵͳ
¡¡¡¡      ext2 linuxÄ¿Ç°³£ÓõÄÎļþϵͳ
¡¡¡¡      msdo ......

LinuxϵͳµÄShell I/OÖض¨ÏòÏê½â

I/OÖض¨ÏòÏê½â¼°Ó¦ÓÃʵÀý
1¡¢ »ù±¾¸ÅÄÕâÊÇÀí½âºóÃæµÄ֪ʶµÄÇ°ÌᣬÇëÎñ±ØÀí½â£©
a¡¢ I/OÖض¨Ïòͨ³£Óë FDÓйأ¬shellµÄFDͨ³£Îª10¸ö£¬¼´ 0¡«9£»
b¡¢ ³£ÓÃFDÓÐ3¸ö£¬Îª0£¨stdin£¬±ê×¼ÊäÈ룩¡¢1£¨stdout£¬±ê×¼Êä³ö£©¡¢2£¨stderr£¬±ê×¼´íÎóÊä³ö£©£¬Ä¬ÈÏÓëkeyboard¡¢monitor¡¢monitorÓйأ»
c¡¢ Óà < À´¸Ä±ä¶Á½øµÄÊý ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ