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To: cs551@merlot.usc.edu
Subject: Re: Prj 2
Date: Thu, 18 Sep 2008 22:13:22 -0700
From: Bill Cheng <william@bourbon.usc.edu>

Someone wrote:

  > Do InitRand and GetInterval need to be called on the same thread? I always
  > get 0 from (double) dran48()

You should call InitRand() in the initialization routine
of your main thread, before any child thread is created.

You should use a mutex to make sure that only one thread
is executing in GetInterval().

I'm not sure why drand48() is returning zeroes.
--
Bill Cheng // bill.cheng@usc.edu <URL:http://merlot.usc.edu/william/usc/>




  -----Original Message-----
  From: Bill Cheng [mailto:william@bourbon.usc.edu] 
  Sent: Thursday, September 18, 2008 5:10 PM
  To: cs551@merlot.usc.edu
  Subject: Re: Prj 2
  
  Someone wrote:
  
    > Can you have multiple conditional waits on the same mutex lock? 
    
  Let's be precise...  You can have multiple threads waiting on the same
  condition variable.
  --
  Bill Cheng // bill.cheng@usc.edu <URL:http://merlot.usc.edu/william/usc/>