Solaris

srchp=14002
ptree -a | awk '{print $1} ' |while read pid
 do
   pfiles $pid | /usr/xpg4/bin/grep -q "$srchp"  && echo $pid
 done

function sockpid
{
  pfiles /proc/* | nawk '
  /^[0-9]*:/  { process=$0 }
  /^ [0-9]*:/ { descriptor=$1 }
  /port: '$1'/ { printf("pid: %-40s fd: %s %s\n",process,descriptor,$0);}'
}

# sockpid 22
pid: 548:       /usr/lib/ssh/sshd                   fd: 256:    sockname: AF_INET6 ::  port: 22
# sockpid | head
pid: 379:       /usr/sbin/in.routed                 fd: 257:    sockname: AF_INET 0.0.0.0  port: 520
pid: 379:       /usr/sbin/in.routed                 fd: 257:    sockname: AF_INET 0.0.0.0  port: 0
pid: 387:       /usr/sbin/named                     fd: 257:    sockname: AF_INET 127.0.0.1  port: 53
pid: 387:       /usr/sbin/named                     fd: 257:    sockname: AF_INET 10.0.2.15  port: 53
pid: 387:       /usr/sbin/named                     fd: 257:    sockname: AF_INET 127.0.0.1  port: 953
pid: 387:       /usr/sbin/named                     fd: 512:    sockname: AF_INET 127.0.0.1  port: 53
pid: 387:       /usr/sbin/named                     fd: 513:    sockname: AF_INET 10.0.2.15  port: 53
pid: 400:       /usr/lib/nfs/statd                  fd: 256:    sockname: AF_INET 0.0.0.0  port: 0
pid: 447:       /usr/lib/inet/inetd start           fd: 256:    sockname: AF_INET6 ::  port: 23
pid: 447:       /usr/lib/inet/inetd start           fd: 256:    sockname: AF_INET6 ::  port: 7008
#

$ lsof -i :8080
COMMAND   PID     USER   FD   TYPE        DEVICE SIZE/OFF NODE NAME
java    19483 username   27u  IPv4 0x3021febbcc0      0t0  TCP *:8080 (LISTEN)