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

LinuxÉ豸ģÐÍÖ®ttyÇý¶¯¼Ü¹¹·ÖÎö


LinuxÉ豸ģÐÍÖ®ttyÇý¶¯¼Ü¹¹·ÖÎö
 
À´Ô´: ChinaUnix²©¿Í ¡¡ÈÕÆÚ£º 2008.07.25 16:24¡¡(¹²ÓÐ0ÌõÆÀÂÛ) ÎÒÒªÆÀÂÛ
 
------------------------------------------
±¾ÎÄϵ±¾Õ¾Ô­´´,»¶Ó­×ªÔØ!
×ªÔØÇë×¢Ã÷³ö´¦:http://ericxiao.cublog.cn/
------------------------------------------
Ò»£ºÇ°ÑÔ
TtyÕâ¸öÃû³ÆÔ´Óڵ紫´ò×ֽڵļò³Æ¡£ÔÚlinux±íʾ¸÷ÖÖÖÕ¶Ë¡£ÖÕ¶Ëͨ³£¶¼¸úÓ²¼þÏà¶ÔÓ¦¡£±ÈÈç¶ÔÓ¦ÓÚÊäÈëÉ豸¼üÅÌÊó±ê¡£Êä³öÉ豸ÏÔʾÆ÷µÄ¿ØÖÆÖն˺ʹ®¿ÚÖÕ¶Ë.Ò²ÓжÔÓ¦ÓÚ²»´æÔÚÉ豸µÄptyÇý¶¯¡£ÔÚÈç´ËÖÚ¶àµÄÖÕ¶ËÄ£ÐÍÖ®ÖУ¬linuxÊÇÔõô½«ËüÃÇͳһ½¨Ä£µÄÄØ?Õâ¾ÍÊÇÎÒÃǽñÌìÒªÌÖÂÛµÄÎÊÌâ.
¶þ£ºttyÇý¶¯¸Åò
Tty¼Ü¹¹ÈçÏÂËùʾ£º
ÈçÉÏͼËùʾ,Óû§¿Õ¼äÖ÷ÒªÊÇͨ¹ýÉ豸Îļþͬtty_core½»»¥.tty_core¸ù¾ÝÓÿռä²Ù×÷µÄÀàÐÍÔÙÑ¡Ôñ¸úline disciplineºÍtty_driver½»»¥.ÀýÈçÉèÖÃÓ²¼þµÄioctlÖ¸Áî¾ÍÖ±½Ó½»¸øtty_driver´¦Àí¡£ReadºÍwrite²Ù×÷¾Í»á½»¸øline discipline´¦Àí.
Line disciplineÊÇÏß·¹æ³ÌµÄÒâ˼¡£ÕýÈçËüµÄÃû×ÖÒ»Ñù£¬Ëü±íʾµÄÊÇÕâÌõÖÕ¶Ë”Ï߳̔µÄÊäÈëÓëÊä³ö¹æ·¶ÉèÖÃ.Ö÷ÒªÓÃÀ´½øÐÐÊäÈë/Êä³öÊý¾ÝµÄÔ¤´¦Àí¡£´¦ÀíÖ®ºó¡£¾Í»á½«Êý¾Ý½»¸øtty_driver
Tty_driver¾ÍÊÇÖն˶ÔÓ¦µÄÇý¶¯ÁË¡£Ëü½«×Ö·ûת»»³ÉÖÕ¶Ë¿ÉÒÔÀí½âµÄ×Ö´®.½«Æä´«¸øÖÕ¶ËÉ豸¡£
ÖµµÃ×¢ÒâµÄÊÇ,Õâ¸ö¼Ü¹¹Ã»ÓÐΪtty_driveroÌṩread²Ù×÷¡£Ò²¾ÍÊÇ˵tty_core ºÍline discipline¶¼Ã»Óа취´Ótty_driverÀïÖ±½Ó¶ÁÖÕ¶ËÐÅÏ¢¡£ÕâÊÇÒòΪtty_driver¶Ô¾ÍµÄhardware²¢²»Ò»¶¨ÊÇÊäÈëÊý¾ÝºÍÊä³öÊý¾ÝµÄ¹²Í¬¸ºÔØÕß¡£ÀýÈç¿ØÖÆÖÕ¶Ë£¬Êä³öÉ豸ÊÇÏÔʾÆ÷¡£ÊäÈëÉ豸ÊǼüÅÌ¡£»ùÓÚÕâÑùµÄÔ­Àí¡£ÔÚline disciplineÖÐÓÐÒ»¸öÊäÈ뻺´æÇø¡£²¢ÌṩÁËÒ»¸öÃû½Ðreceive_buf()µÄ½Ó¿Úº¯Êý¡£¶ÔÓ¦µÄÖÕ¶ËÉ豸ֻҪµ÷ÓÃline discipineµÄreceiver_bufº¯Êý£¬½«Êý¾ÝдÈëµ½ÊäÈ뻺´æÇø¾Í¿ÉÒÔÁË¡£
Èç¹ûÒ»¸öÉ豸ͬʱÊÇÊäÈëÉ豸ÓÖÊÇÊä³öÉ豸¡£ÄÇÔÚÉ豸µÄÖжϴ¦ÀíÖе÷ÓÃreceive_buf()½«Êý¾ÝдÈë¼´¿É.
Èý£ºttyÇý¶¯½Ó¿Ú·ÖÎö
¾ßÌåµÄttyÇý¶¯Éè¼Æ¿ÉÒԲο¼LDD3¡£ÕâÀïÖ»¶ÔËüµÄ½Ó¿ÚʵÏÖ×öÒ»¸ö·ÖÎö.tty driverµÄËùÓвÙ×÷¶¼°üº¬ÔÚtty_driverÖС£Äں˼´¹©ÁËÒ»¸öÃû½Ðalloc_tty_driver()À´·ÖÅäÕâ¸ötty_driver¡£µ±È»ÎÒÃÇÒ²¿ÉÒÔÔÚ×Ô¼ºµÄÇý¶¯Öн«Ëü¶¨Òå³ÉÒ»¸ö¾²Ì¬µÄ½á¹¹¡£¶Ôtty_driver½øÐÐһЩ±ØÒªµÄ³õʼ»¯Ö®ºó£¬µ÷ÓÃtty_register_driver()½«Æä×¢²á.
alloc_tty_driver()½Ó¿Ú´úÂëÈçÏÂËùʾ£º
struct tty_driver *alloc_tty_driver(int lines)
{
   &


Ïà¹ØÎĵµ£º

ÔÚlinuxÏÂʵÏÖweb qqµÄ×ÀÃæ»¯


´´½¨×ÀÃæÍ¼±ê
Ŀǰ½«ÍøÂçÓ¦ÓÃÀ©Õ¹µ½×ÀÃæÊÇÒ»¸öÇ÷ÊÆ£¬´æÔÚןܶà½â¾ö·½°¸£¬±¾ÎÄÒÔ Mozilla Prism ΪÀý£¬ÀàËÆµÄ·½·¨Í¬ÑùÊÊÓÃÓÚ Google Chrome ¡£
1. µ½ Mozilla Prism µÄÍøÕ¾ÉÏÏÂÔØ Prism£¬µã»÷ Download Now Ö®ºó»áÌáʾÓÐÁ½ÖÖ£¬Ò»ÖÖÊÇÒÔ Mozilla Firefox À©Õ¹µÄ·½Ê½£¬ÊʺÏÒѾ­°²×°ÓÐ Firefox µÄÅóÓÑ£»Ò»Ö ......

linuxµÄHZ, Tick, Jiffies

     LinuxºËÐöÖØÒª¸úʱ¼äÓйصÄÃû´Ê»ò±äÊý£¬µ×Ͻ«½éÉÜHZ¡¢tickÓëjiffies¡£
£¨1£©HZ
      LinuxºËÐÄÿ¸ô¹Ì¶¨ÖÜÆÚ»á·¢³ötimer interrupt (IRQ 0)£¬HZÊÇÓÃÀ´¶¨ÒåÿһÃëÓм¸´Îtimer interrupts¡£¾ÙÀýÀ´Ëµ£¬HZΪ1000£¬´ú±íÿÃëÓÐ1000´Îtimer interrupts¡£ HZ¿ÉÔÚ±àÒëºËÐ ......

LINUX C³ÌÐò¿ª·¢Ã¿ÈÕÒ»Ìâ——Ö¸Õë

 
ʵÏÖÒ»¸öÁ´±í£¬Íê³ÉÁ´±íµÄ²åÈ룬²éÕÒ£¬É¾³ý
 
typedef struct _FIFO_M{
  void *pdata;
struct _FIFO_M *pNext;
}FIFO_M,* pFIFO_M;
 
typedef struct _FIFO{
pFIFO_M head;
pFIFO_M tail;
pFIFO_M pos;
int mcount;//½Úµã¸öÊý
int max_count;//½Úµã×î´ó¸öÊý¡£
}FIFO,* pFIFO;
......

Linux ÃüÁî

chmod(change mode)
¹¦ÄÜ˵Ã÷£º±ä¸üÎļþ»òĿ¼µÄȨÏÞ¡£
Óï¡¡¡¡·¨£ºchmod [-cfRv][--help][--version][<ȨÏÞ·¶Î§>+/-/=<ȨÏÞÉèÖÃ...>][Îļþ»òĿ¼...] »ò chmod [-cfRv][--help][--version][Êý×Ö´úºÅ][Îļþ»òĿ¼...] »ò chmod [-cfRv][--help][--reference=<²Î¿¼ ......

linuxµÄ´¥ÃþÆÁÖ®¶þ£ºÊÖ¹¤µ÷ÊÔ

£¨1£©¼òÊö£ºÔÚ±àÒëºÃÁ˵ÄANDROID¸ùÎļþϵͳµÄsystem/etc/pointercalÕâ¸öÎļþÄÚ£¬´æ·Å×Å7¸öÊý£¬Õâ7¸öÊý¾ÍÊÇ¡¶linuxµÄ´¥ÃþÆÁÖ®Ò»¡·Ëù½²µÄa,b,c,d,e,f,s¡£±ÈÈçÎÒÔÚ×Ô¼ºµÄMIDÉϲ鿴µÄÊýֵΪ£º4933 -5 -15710176 -95 -4961 56071328 65536¡£
£¨2£©´¦Àí˵Ã÷£º“system/etc/pointercal”Õâ¸öÎļþÊDZ»java³ÌÐò¶ÁȡʹÓÃµÄ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ