[or-cvs] a few minor updates to hacking

[arma@seul.org (Roger Dingledine)]

Update of /home/or/cvsroot/doc
In directory moria.mit.edu:/home2/arma/work/onion/cvs/doc

Modified Files:
	HACKING 
Log Message:
a few minor updates to hacking


Index: HACKING
===================================================================
RCS file: /home/or/cvsroot/doc/HACKING,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -d -r1.6 -r1.7
--- HACKING	12 Nov 2003 17:34:41 -0000	1.6
+++ HACKING	13 Dec 2003 22:55:12 -0000	1.7
@@ -65,14 +65,15 @@
         Also implements parsing functions to read HTTP and SOCKS commands
         from buffers.
 
-     tree.h -- A splay tree implementation by Niels Provos.  Used only by
-        dns.c.
+     tree.h -- A splay tree implementation by Niels Provos.  Used by
+        dns.c for dns caching at exits, and by connection_edge.c for dns
+        caching at clients.
 
      config.c -- Code to parse and validate the configuration file.
 
    [Background processing modules]
 
-     cpuworker.c -- Implements a separate 'CPU worker' process to perform
+     cpuworker.c -- Implements a farm of 'CPU worker' processes to perform
         CPU-intensive tasks in the background, so as not interrupt the
         onion router.  (OR only)
 
@@ -163,7 +164,7 @@
      [Internal]
        CONN_TYPE_DNSWORKER -- Connection from the main process to a DNS
           worker process. [OR only]
-       
+
        CONN_TYPE_CPUWORKER -- Connection from the main process to a CPU
           worker process. [OR only]
 
@@ -196,7 +197,7 @@
    poll, if poll is not available) to handle nonblocking (asynchronous)
    IO.  If you're not familiar with nonblocking IO, check out the links
    at the end of this document.
-        
+
    All asynchronous logic is handled in main.c.  The functions
    'connection_add', 'connection_set_poll_socket', and 'connection_remove'
    manage an array of connection_t*, and keep in synch with the array of