Hi,
Going on a 2.6 kernel, I have a trouble with sigwait()
When I send a kill to this program, the exit code is 143 (signal 15 and core)!
Is there a workaround ?
Thanks,
Yves
gcc -g -Wall -D_REENTRANT=1 -D_THREAD_SAFE=1 s.c -lpthread -o s
/===== d�but du code =====/
#include <unistd.h> #include <stdio.h> #include <signal.h> #include <pthread.h>
typedef void Sigfunc(int);
#define ThreadBlockSignal() ThreadSignalAction(SIG_BLOCK) #define ThreadUnblockSignal() ThreadSignalAction(SIG_UNBLOCK)
/*----------STATIC------------------*/
extern void ThreadSignalAction(const int how)
{
sigset_t newmask; if (sigemptyset(&newmask)<0){
printf("sigemptyset failed");
return;
}
if (sigaddset(&newmask,SIGTERM)<0){
printf("sigaddset failed");
return;
}
if (pthread_sigmask(how,&newmask,NULL)){
printf("pthread_sigmask SIG_BLOCK failed"); return;
}
}extern Sigfunc * signal_intr(int signo,Sigfunc *func)
{
struct sigaction act, oact;act.sa_handler = func;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
if (signo == SIGALRM){
#ifdef SA_INTERRUPT
act.sa_flags |= SA_INTERRUPT; /* Interrupt mode */
#endif /* SA_INTERRUPT */
}else{
#ifdef SA_RESTART
/*
* automatic restart of interrupted system calls except
* if they are operating on a slow device.
* For select():
* Under BSD, even if SA_RESTART is specified, select() was
* never restarted.
* Under SVR4, if SA_RESTART is specified, even select() and
* pool() are automatically restarted.
*/
act.sa_flags |= SA_RESTART;
#endif /* SA_RESTART */
if (signo == SIGCHLD){
act.sa_flags |= SA_NOCLDSTOP; /* Don't send SIGCHLD when children stop*/
}
}
#ifdef SA_RESETHAND
act.sa_flags &= ~SA_RESETHAND; /* signal handle remains installed */
#endif /* SA_RESETHAND */
if (sigaction(signo, &act, &oact) < 0){
return(SIG_ERR);
}
return(oact.sa_handler);
}extern int WaitSignal(void)
{
sigset_t newmask;
int ret;
int sig; if (sigemptyset(&newmask)<0){
printf("sigemptyset failed");
return -1;
}
if (sigaddset(&newmask,SIGTERM)<0){
printf("sigaddset failed");
return -1;
}
printf("Waiting signal ..."); fflush(stdout);
ret = sigwait(&newmask,&sig);
if (ret!=0){
printf("WaitSignal: sigwait failed %d",ret);
}else{
printf("WaitSignal: sigwait sig %d",sig);
}
return sig;
}int main(int argc,char * const argv[])
{
if (signal_intr(SIGTERM,SIG_DFL) == SIG_ERR){
printf("signal %d (set handle) failed",SIGTERM);
} /* -- Main loop */
printf("%lu ready ...",(unsigned long)getpid()); fflush(stdout);
int signo; ThreadUnblockSignal();
signo = WaitSignal();
ThreadBlockSignal();
if (signo==SIGTERM){
printf("\nSIGTERM in main\n"); fflush(stdout);
}else{
printf("\n%d in main\n",signo); fflush(stdout);
}
return 0;
}/===== fin du code =====/
begin:vcard fn:Yves Crespin n:Crespin;Yves org:Quartz adr:Hameau du Pra - CIDEX 322;;39, rue Victor Hugo;CROLLES;;38920;France email;internet:[EMAIL PROTECTED] tel;work:04.76.92.21.91 tel;cell:06.86.42.86.81 x-mozilla-html:FALSE url:http://crespin.quartz.free.fr/ version:2.1 end:vcard
