/////////////////////
// LOCAL FUNCTIONS //
/////////////////////
// pauses the mud for # of microseconds.....
// strangely enough.. windows _requires_ you have at least one fd_set
// with at least one socket in it, to use select.. linux does not
void mudsleep(long microseconds)
{
static unsigned long sleep_socket = 0;
fd_set fd_sleep;
struct timeval wait_time;
if( tick % (LOOPS_PER_SECOND*60*15) == 0 )
{
CREATURE *crit;
OBJECT *obj;
long players = 0, creatures = 0, objects = 0;
for(crit = creature_list; crit; crit = crit->next)
{
if(IsPlayer(crit)) players++;
else creatures++;
}
for(obj = object_list; obj; obj = obj->next)
objects++;
// not a true representation of a tick.. it gets called twice in a row
// mudlog("Tick %d -- Players:%li Creatures:%li Objects:%li",
// tick,
// players, creatures, objects);
}
if( !sleep_socket ) // initialize
{
if( (sleep_socket = socket(AF_INET, SOCK_STREAM, 0)) < 0 )
{
mudlog("mudsleep: Error creating sleep_socket");
mud_exit();
return;
}
}
if( microseconds < 0 )
microseconds = 0;
wait_time.tv_usec = microseconds;
wait_time.tv_sec = 0;
FD_ZERO(&fd_sleep);
FD_SET(sleep_socket,&fd_sleep);
if(select(0, 0, 0, &fd_sleep, &wait_time) < 0)
{
#ifdef WIN32
mudlog("select: error #%d",WSAGetLastError());
#else
perror("mudsleep: select");
#endif
// mud_exit();
}
}
/////////////////////
// LOCAL FUNCTIONS //
/////////////////////
// catches process signals and deals with them.. checks for
// infinite looping/hanging as well.
void signal_handler(int type)
{
static struct timeval last_signal_time;
struct timeval time;
get_time(&time);
switch(type)
{
case SIGINT:
case SIGILL:
case SIGFPE:
case SIGSEGV:
#ifndef WIN32
case SIGTRAP:
#endif
mudlog("Mud received bad signal(%d), aborting...",type);
mud_exit();
abort();
break;
#ifndef WIN32
case SIGVTALRM:
// check if the mud is looping
// this type of signal only comes every 5 seconds of _process_ usage, not real
// time.. so if the process is using the CPU constantly for 5 seconds, we
// assume it's looping
if( last_signal_time.tv_sec > 0 && (time.tv_sec-last_signal_time.tv_sec) < 10 )
{
mudlog("Mud in infinite loop, aborting!");
abort();
}
break;
#endif
}
get_time(&last_signal_time);
}