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int sigemptyset(sigset_t *set);
int sigfillset(sigset_t *set);
int sigaddset(sigset_t *set,int signo);
int sigdelset(sigset_t *set,int signo)
int sigismember(const sigset_t *set,int signo);
»¹ÓÐÒ»¸öÖØÒªµÄº¯Êý£ºint sigprocmask(int how,const sigset_t *restrict set,sigset_t *restrict oset);
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static void sig_quit(int); //ÐźŴ¦Àíº¯Êý
int main( )
{
sigset_t newmask,oldmask,pendmask;
if(signal(SIGQUIT,sig_quit)==SIG_ERR)
err_sys("can not catch SIGQUIT");
-----------------------------------------------------------------------------------------------------------
sigemptyset(&newmask); //Çå¿ÕÐźÅÑÚÂ뼯newmask,²»×èÈûÈκÎÐźÅ
sigaddset(&newmask,SIGQUIT); //½«SIGQUITÐźŷÅÈëÐźż¯newmaskÖÐÈ¥
if(sigprocmask(SIG_BLOCK,&newmask,&oldmask)<0) //½«oldmask ºÍnewmaskºÏ²¢
err_sys("SIG_BLOCK error"); //µ±Ç°ÐźÅÆÁ±Î×Ö·ÅÔÚnewmaskÀÒÔÇ°µÄ·ÅÔÚoldmaskÀï
sleep(5);
if(sigpending(&pendmask)<0) //±£´æËùÓб»×èÈûµÄÐźţ¬±¾Àý¼´±£´æSIGQUITµ½pendmaskÖÐÈ¥
 
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·þÎñ·¢ÏÖÐÒé(SDP»òBluetooth SDP)ÔÚÀ¶ÑÀÐÒéÕ»ÖжÔÀ¶ÑÀ»·¾³ÖеÄÓ¦ÓóÌÐòÓÐÌØÊâµÄº¬Ò⣬·¢ÏÖÄĸö·þÎñÊÇ¿ÉÓõĺÍÈ·¶¨ÕâЩ¿ÉÓ÷þÎñµÄÌØÕ÷¡£SDP¶¨ÒåÁËbluetooth client·¢ÏÖ¿ÉÓÃbluetooth server·þÎñºÍËüÃǵÄÌØÕ÷µÄ·½·¨¡£ ......
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Purpose
This examples shows how to create and stop a kernel thread.
The driver is implemented as a loadable module. In the init_module() routine five kernel threads are created. This kernel threads sleep one second, wake up, print a message and fall asleep again. On unload of the module (cle ......
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debian lenny , my favorite
a. vim /etc/sysctl.conf:
modify net.ipv4.ip_forward = 1
b. flush route table:
iptables -F
iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
c. open NAT services:
&nb ......