i=365:---
parent 3980: continue
kid=1 3980 before require
parent 3980: continue
parent 3980: waiting for join
kid=2 3980 before require
kid=1 3980 after require
parent 3980: thread exited
parent 3980: waiting for join
kid=2 3980 after require
parent 3980: thread exited
i=366:---
parent 3980: continue
kid=1 3980 before require
parent 3980: continue
parent 3980: waiting for join
kid=2 3980 before require

##</code><code>##

pslist -d perl

perl 3980:
 Tid Pri    Cswtch            State     User Time   Kernel Time   Elapsed Time
6108   8     10366     Wait:UserReq   0:00:20.296   0:00:00.375    0:07:47.367
3856   8       304     Wait:UserReq   0:00:00.062   0:00:00.062    0:05:40.338
2784   9       282   Wait:Executive   0:00:00.062   0:00:00.046    0:05:40.307

##</code><code>##

pslist -d perl

perl 3980:
 Tid Pri    Cswtch            State     User Time   Kernel Time   Elapsed Time
6108  10     10380   Wait:Suspended   0:00:20.296   0:00:00.375    0:11:41.922
3856  10       316   Wait:Suspended   0:00:00.062   0:00:00.062    0:09:34.893
2784   9       290   Wait:Suspended   0:00:00.062   0:00:00.046    0:09:34.862
5480  10        14   Wait:Executive   0:00:00.000   0:00:00.000    0:01:08.299