GWEN_PROCESS_STATE GWEN_Process_GetState(GWEN_PROCESS *pr, int w) {
int rv;
int status;
assert(pr);
/* try to get the status */
rv=waitpid(pr->pid, &status, w?0:WNOHANG);
if (rv==-1) {
DBG_ERROR(GWEN_LOGDOMAIN, "waitdpid(%d): %s", (int)pr->pid, strerror(errno));
return GWEN_ProcessStateUnknown;
}
else if (rv==0) {
/* process still running */
return GWEN_ProcessStateRunning;
}
else {
return GWEN_Process_MakeState(pr, status);
}
}
void GWEN_Process_SignalHandler(int s)
{
int status;
pid_t pid;
switch (s) {
case SIGCHLD:
/* try to get the status */
pid=waitpid(0, &status, WNOHANG);
if (pid==-1) {
DBG_DEBUG(GWEN_LOGDOMAIN, "waitdpid(%d): %s", 0, strerror(errno));
}
else if (pid==0) {
/* process still running ?! */
DBG_DEBUG(GWEN_LOGDOMAIN, "Got a SIGCHLD but no child terminated ??");
}
else {
GWEN_PROCESS *pr;
/* som process terminated */
pr=GWEN_Process_FindProcess(pid);
if (!pr) {
DBG_NOTICE(GWEN_LOGDOMAIN, "No infomation about process \"%d\" available", (int)pid);
}
else {
GWEN_Process_MakeState(pr, status);
/* remove from list. If this process data is not used by the
* aplication it will now be freed, otherwise only the usage
* counter is decremented */
GWEN_Process_free(pr);
}
}
break;
default:
DBG_ERROR(GWEN_LOGDOMAIN, "Got unhandled signal \"%d\"", s);
break;
} /* switch */
}
