Linux¼üÅÌÇý¶¯·¶Àý
¼üÅÌÔÚËùÓеÄÇý¶¯Ö®ÖÐ×îΪ¼òµ¥µÄÒ»ÖÖ£¬µ«ËüÈ´°üº¬ÁËÇý¶¯µÄ»ù±¾¿ò¼Ü£¬¶ÔÒÔºó¼ÌÐøÉîÈëѧϰÆäËû¸´ÔÓµÄÇý¶¯´óÓÐñÔÒæ£¬ÒÔϱãΪÄãÖð²½ÆÊÎöÇý¶¯µÄ¿ª·¢¡£²ÉÓõÄÊDzéѯ·½Ê½¡£×ªÔØÇë×¢Ã÷³ö´¦£ºqiangren.blog.edu.cn
Ò».ÄÚºËÄ£¿éµÄ×¢²áºÍ³·Ïú
ÔÚ¼ÓÔØÄ£¿éµÄʱºò£¬Ê×ÏÈÔËÐеÄÊÇÄÚºËÄ£¿éµÄ×¢²áº¯Êý¡£ËüµÄ¹¦ÄܰüÀ¨ÄÚºË×¢²áÉ豸ÒÔ¼°±äÁ¿µÄ³õʼ»¯¡£
static int head,tail;
int _init Keypad_init(void)
{
int result;
result=register_chrdev(KEY_LED_MAJOR,KEY_LED_NAME,&Keypad_fops);
Keypad_clear();
init_waitqueue_head(&queue);
prink("%s %s initialized.\n",KEY_LED_NAME,KEY_LED_VERSION);//²»ÄÜÓÃprinf
return 0;
}
module_init(Keypad_init);//¼ÓÔØÄ£¿é
void _exit Keypad_cleanup(void)
{
del_timer(&timer);
unregister_chrdev(KEY_LED_MAJOR,KEY_LED_NAME);
prink("Keypad driver removed \n");
}
module_exit(Keypad_cleanup);//Ð¶ÔØ¸ÃÄ£¿é
¶þ.ÐéÄâÎļþϵͳÓëÓ²¼þÇý¶¯µÄ½Ó¿Ú
static struct file_operations Keypad_fops={
open:Keypad_open,
read:Keypad_read,
poll:Keypad_poll,
fasync:Keypad_fasync,
release:Keypad_release,
};
¸Ã½Ó¿Ú¶¨ÒåÍêÖ®ºóһЩ±ãÊǶÔÕ⼸¸ö¾ßÌ庯ÊýµÄʵÏÖÁË£¡ÏÖÔÚÎÒÃÇÒ»Æð½øÈëÏÂÒ»²½°É£¬ÊDz»ÊǾõµÃÆäʵûʲôÄѶȵÄÄØ£¿±ðÄÇôÔ翪ÐÄ×ÅÄØ£¿Õ⼸¸öº¯ÊýµÄʵÏÖʱºò£¬Éæ¼°µ½ºÜ¶à¼¼Êõ£¬°üÀ¨Äں˶¨Ê±Æ÷£¬*µÈ´ý¶ÓÁеľßÌåʵÏÖ£¨×èÈû·½Ê½£©£¬Òì²½·½Ê½µÄ¾ßÌåʵÏÖ¼¼ÇÉ£¬Ñ»·¶ÓÁС£¿´µ½Õâô¶à¼¼ÊõÄãÊÇ·ñ¸Ðµ½ºÜÐË·ÜÄØ£¿ÒÔϱ¾È˽«ÒÔͨË׵ķ½Ê½ÎªÄã½²½â£¬Ï£ÍûÄãÄÜÀí½â¡£
Èý.É豸µÄ´ò¿ª²Ù×÷½Ó¿Úº¯Êý¾ßÌåʵÏÖ£¨Keypad_open)
É豸´ò¿ªÒ»°ã°üÀ¨Á½´ó²Ù×÷£¬Ò»ÊÇÍê³ÉÉ豸µÄ³õʼ»¯£¬¶þÊÇÉ豸ÒýÓüÆÊýÆ÷¼Ó1
static int Keypad_open(struct inode *inode,struct file *filp)
{
read_xy();
try_module_get(THIS_MODULE);//´Ëº¯ÊýΪLinux 2.6ÄÚºËÔö¼ÓµÄ£¬²»Í¬ÓÚ2.4Äںˣ¬¹¦ÄÜÊǼÆÊýÆ÷µÄÖµ¼Ó1
return 0;
}
static void read_xy(void)
{
&nbs
Ïà¹ØÎĵµ£º
´´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 ......
¼¶±ð£º ³õ¼¶
·®Ææ (fanqi@cn.ibm.com), Xseries eServer ¹¤³Ìʦ, IBM TSS China Beijing
2004 Äê 11 ÔÂ 01 ÈÕ
Linux I/O ÖØ¶¨ÏòËäÈ»ºÜ¼òµ¥£¬µ«Ôڽű¾±àд¡¢ÏµÍ³¹ÜÀíʱȴҪ³£³£´ò½»µÀ£¬¸ãÇåÆäÖÐʹÓü¼Çɷdz£ÓÐÓá£
Ê×ÏÈ˵һÏÂʲôÊÇI/OÖØ¶¨Ïò£¬ËùνI/OÖØ¶¨Ïò¼òµ¥À´Ëµ¾ÍÊÇÒ»¸ö¹ý³Ì£¬Õâ¸ö¹ý³Ì²¶×½Ò»¸öÎļþ£¬»òÕßÃüÁ³ÌÐò ......
http://hi.baidu.com/styl_007/blog/item/82b833f475036ce67609d7b6.html
Öжϴ¦ÀíµÄtasklet£¨Ð¡ÈÎÎñ£©»úÖÆ£²»¹ýÈç´Ë
2009-08-10 18:30
ÖжϷþÎñ³ÌÐòÒ»°ã¶¼ÊÇÔÚÖжÏÇëÇ󹨱յÄÌõ¼þÏÂÖ´ÐеÄ
,
ÒÔ±ÜÃâǶÌ×¶øÊ¹ÖжϿØÖƸ´ÔÓ»¯¡£µ«ÊÇ£¬ÖжÏÊÇÒ»¸öËæ»úʼþ£¬ËüËæÊ±»áµ½À´£¬Èç¹û¹ØÖжϵÄʱ¼äÌ«³¤£¬
CPU
¾Í²»Äܼ°Ê±ÏìÓ¦Æä ......
linuxϵͳÖжÔÐźŵĴ¦ÀíÖ÷ÒªÊÇsignal ºÍsigactionº¯ÊýÀ´Íê³É£¬pauseÓÃÀ´ÏìÓ¦ÈκÎÐźţ¬µ«²»×öÈκδ¦Àí¡£
1¡£signalº¯Êý
¸Ãº¯ÊýÓÃÀ´ÉèÖýø³ÌÔÚ½Óµ½Ðźŵ͝×÷¡£¿ÉÒÔ man signal²é¿´¾ßÌåÓ÷¨£¬ÏÖÔÚ¶ÔÆäÓ÷¨ÑÝʾ£¬
SIGKILL SIGSTOPÊDz»Äܱ»²¶×½ºÍºöÂÔµÄÐź ......