linux 2.6Ô´´úÂëÇé¾°·ÖÎö±Ê¼ÇÖ®½ø³Ì3
ΪÄÚºËѰÕÒнø³ÌÔÚcpuÉÏÔËÐÐʱ£¬±ØÐëÖ»¿¼ÂÇ¿ÉÔËÐнø³Ì£¨TASK_RUNNING£©¡£
Ìá¸ßµ÷¶È³ÌÐòÔËÐÐËٶȵľ÷ÇÏÊǽ¨Á¢¶à¸ö¿ÉÔËÐнø³ÌÁ´±í£¬Ã¿ÖÖ½ø³ÌÓÅÏÈȨ¶ÔÓ¦Ò»¸ö²»Í¬µÄÁ´±í¡£Ã¿¸ötask_structÃèÊö·û°üº¬Ò»¸ölist_headÀàÐ͵Ä×Ö¶Îrun_list¡£Èç¹û½ø³ÌµÄÓÅÏÈȨµÈÓÚk(0-139)£¬run_list×ֶΰѸýø³ÌÁ´ÈëÓÅÏÈȨΪkµÄ¿ÉÔËÐнø³ÌµÄÁ´±íÖС£
Äں˱ØÐëΪϵͳÖÐÿ¸öÔËÐжÓÁб£´æ´óÁ¿µÄÊý¾Ý£¬²»¹ýÔËÐжÓÁеÄÖ÷Òª½á¹¹»¹ÊÇ×é³ÉÔËÐжÓÁеĽø³ÌÃèÊö·û±í£¬ËùÓÐÕâЩÁ´±í¶¼ÓÉÒ»¸öµ¥¶ÀµÄprio_array_tÊý¾Ý½á¹¹À´ÊµÏÖ¡£
185 struct prio_array {
186 unsigned int nr_active; Á´±íÖнø³ÌÃèÊö·ûµÄÊýÁ¿
187 unsigned long bitmap[BITMAP_SIZE]; ÓÅÏÈȨλͼ£ºµ±ÇÒ½öµ±Ä³¸öÓÅÏÈȨµÄ½ø³ÌÁ´±í²»Îª¿ÕʱÉèÖÃÏàÓ¦µÄλ±êÖ¾
188 struct list_head queue[MAX_PRIO]; 140¸öÓÅÏÈȨ¶ÓÁеÄÍ·½áµã
189 };
static void enqueue_task(struct task_struct *p, prio_array_t *array)
{
sched_info_queued(p);
list_add_tail(&p->run_list, array->queue + p->prio);
__set_bit(p->prio, array->bitmap);
array->nr_active++;
p->array = array;
}
´Ëº¯Êý½«½ø³ÌÃèÊö·û²åÈëij¸öÔËÐжÓÁÐÁ´±í¡£Óڴ˺¯Êý¶ÔÓ¦µÄÊÇdequeue_task(p,array)
½ø³ÌÃèÊö·ûµÄprio×ֶδæ·Å½ø³ÌµÄ¶¯Ì¬ÓÅÏÈȨ£¬¶øarray×Ö¶ÎÔòÊÇÒ»¸öÖ¸Õ룬ָÏòµ±Ç°ÔËÐжÓÁеÄprio_array_tÊý¾Ý½á¹¹¡£
³ÌÐò´´½¨µÄ½ø³Ì¾ßÓи¸/×Ó¹ØÏµ¡£Èç¹ûÒ»¸ö½ø³Ì´´½¨¶à¸ö×Ó½ø³Ìʱ£¬Ôò×Ó½ø³ÌÖ®¼ä¾ßÓÐÐֵܹØÏµ¡£½ø³Ì0ºÍ½ø³Ì1ÊÇÓÉÄں˴´½¨µÄ¡£½ø³Ì1£¨init£©ÊÇËùÓнø³ÌµÄ׿ÏÈ¡£
real_parent:Ö¸Ïò´´½¨ÁËp½ø³ÌµÄÃèÊö·û£¬Èç¹ûpµÄ¸¸½ø³Ì²»ÔÙ´æÔÚ£¬¾ÍÖ¸Ïò½ø³Ì1£¨init£©µÄÃèÊö·û£¨Èç¹ûÓû§ÔËÐÐÒ»¸öºǫ́½ø³Ì¶øÇÒÍ˳öÁËshell,ºǫ́½ø³Ì¾Í»á³ÉΪinitµÄ×Ó½ø³Ì£©
parent£ºÖ¸ÏòpµÄµ±Ç°¸¸½ø³Ì£¨ÕâÖÖ½ø³ÌµÄ×Ó½ø³ÌÖÕֹʱ£¬±ØÐëÏò¸¸½ø³Ì·¢Ðźţ©¡£ËüµÄֵͨ³£Óëreal_par
Ïà¹ØÎĵµ£º
1. HCI²ãÐÒé¸ÅÊö£º
HCIÌṩһÌ×ͳһµÄ·½·¨À´·ÃÎÊBluetoothµ×²ã¡£ÈçͼËùʾ£º
´ÓͼÉÏ¿ÉÒÔ¿´³ö£¬Host Controller Interface(HCI) ¾ÍÊÇÓÃÀ´¹µÍ¨HostºÍModule¡£Hostͨ³£¾ÍÊÇPC£¬ ModuleÔòÊÇÒÔ¸÷ÖÖÎïÀíÁ¬½ÓÐÎʽ£¨USB,serial,pc-cardµÈ£©Á¬½Óµ½PCÉϵÄbluetooth Dongle¡£
ÔÚHostÕâÒ»¶Ë£ºapplication,SDP,L2capµÈÐÒé ......
I/O ¶Ë¿ÚºÍ I/O ÄÚ´æ
ÿÖÖÍâÉè¶¼ÊÇͨ¹ý¶Áд¼Ä´æÆ÷À´½øÐпØÖÆ¡£
ÔÚÓ²¼þ²ã£¬ÄÚ´æÇøºÍ I/O ÇøÓòûÓиÅÄîÉϵÄÇø±ð: ËüÃǶ¼ÊÇͨ¹ýÏòÔÚµØÖ·×ÜÏߺͿØÖÆ×ÜÏß·¢³öµçƽÐźÅÀ´½øÐзÃÎÊ£¬ÔÙͨ¹ýÊý¾Ý×ÜÏß¶ÁдÊý¾Ý¡£
ÒòΪÍâÉèÒªÓëI\O×ÜÏ߯¥Å䣬¶ø´ó²¿·ÖÁ÷ÐÐµÄ I/O ×ÜÏßÊÇ»ùÓÚ¸öÈ˼ÆËã»úÄ£ÐÍ£¨Ö÷ÒªÊÇ x86 ¼Ò×壺ËüΪ¶ÁºÍд I/O ¶Ë¿ÚÌá¹ ......
Linuxƽ̨ÏÂEclipseµÄ°²×°(2007-06-26 09:50:22)
·ÖÀࣺËûɽ֮ʯ
Linuxƽ̨ÏÂEclipseµÄ°²×°
Linuxƽ̨ÏÂEclipseµÄ°²×°2007Äê06ÔÂ15ÈÕ ÐÇÆÚÎå ÉÏÎç 10:04Linuxƽ̨ÏÂEclipseµÄ°²×°
ÏÂÃæÒÔRedhat 4.0ΪÀý¼òµ¥µÄ½éÉÜÒ»ÏÂEclipseµÄ°²×°£º
Ò».ÏÂÔØËùÐèÈí¼þ
1 ÏÂÔØ Eclipse£¬Í ......
ÔÚunix/linuxÏ£¬¾³£ÓÐÒòΪ¹²ÏíÄÚ´æ¡¢ÐźÅÁ¿£¬¶ÓÁеȹ²ÏíÐÅϢûÓиɾ»µØÇå³þ¶øÒýÆðһЩÎÊÌâ¡£
²é¿´¹²ÏíÐÅÏ¢µÄÄÚ´æµÄÃüÁîÊÇipcs [-m|-s|-q]¡£
ĬÈÏ»áÁгö¹²ÏíÄÚ´æ¡¢ÐźÅÁ¿£¬¶ÓÁÐÐÅÏ¢£¬-mÁгö¹²ÏíÄڴ棬-sÁгö¹²ÏíÐźÅÁ¿£¬-qÁгö¹²Ïí¶ÓÁС£
ÔõÑùÇå³þÄØ£¿
Çå³þÃüÁîÊÇipcrm [-m|-s|-q] id¡£
-m ɾ³ý¹²ÏíÄڴ棬-sɾ³ý¹²ÏíÐ ......