线程和信号

 

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <signal.h>

#include <errno.h>

#include <pthread.h>

#include <unistd.h>

#include <sys/types.h>

void sig_handler(int signum)

{

if(signum == SIGUSR1)

printf("sigusr1/n");

else if(signum == SIGUSR2)

printf("sigusr2/n");

else

printf("Receive signale: %d/n", signum);

}

void *sigmgr_thread(void *arg)

{

sigset_t waitset;

int sig;

int rc;

pthread_t ppid = pthread_self();

pthread_detach(ppid);

sigemptyset(&waitset);

sigaddset(&waitset,SIGRTMIN);

sigaddset(&waitset,SIGRTMIN+2);

sigaddset(&waitset,SIGRTMAX);

sigaddset(&waitset,SIGUSR1);

sigaddset(&waitset,SIGUSR2);

while(1) {

rc = sigwait(&waitset, &sig);

if(rc == 0) {

sig_handler(sig);

} else {

printf("sigwaitinfo() return err: %d; %s/n", errno, strerror(errno));

}

}

}

int main(void)

{

sigset_tbset, oset;

pid_tpid = getpid();

pthread_tppid;

sigemptyset(&bset);

sigaddset(&bset, SIGRTMIN);

sigaddset(&bset, SIGRTMIN+2);

sigaddset(&bset, SIGRTMAX);

sigaddset(&bset, SIGUSR1);

sigaddset(&bset, SIGUSR2);

if(pthread_sigmask(SIG_BLOCK, &bset, &oset) != 0) 

printf("set pthread_mask failed/n");

kill(pid, SIGRTMAX);

kill(pid, SIGRTMAX);

kill(pid, SIGRTMIN+2);

kill(pid, SIGRTMIN);

kill(pid, SIGRTMIN+2);

kill(pid, SIGRTMIN);

kill(pid, SIGUSR2);

kill(pid, SIGUSR2);

kill(pid, SIGUSR1);

kill(pid, SIGUSR1);

pthread_create(&ppid, NULL, sigmgr_thread, NULL);

sleep(10);

exit(0);

}

 

无可奈何花落去别大地回春