nanogui: SERVER_LOCK() question
Subject:
SERVER_LOCK() question
From:
Mark Mussetter ####@####.####
Date:
7 Apr 2004 16:27:14 +0100
Message-Id: <5.1.0.14.0.20040407092014.023b0e20@link-comm.com>
I have a quick question about the SERVER_LOCK() macro that gets defined in
serv.h. The code looks like the following:
============
#if NONETWORK
/* Use a server-side mutex. */
#include "lock.h"
LOCK_EXTERN(gr_server_mutex);
#define SERVER_LOCK_DECLARE LOCK_DECLARE(gr_server_mutex);
#define SERVER_LOCK_INIT() LOCK_INIT(&gr_server_mutex)
#define SERVER_LOCK() LOCK(&gr_server_mutex)
#define SERVER_UNLOCK() UNLOCK(&gr_server_mutex)
#else /* !NONETWORK */
/* The Nano-X server is single threaded, so disable the server-side mutex
(for speed). */
#define SERVER_LOCK_DECLARE /* no-op */
#define SERVER_LOCK_INIT() do {} while(0) /* no-op, but require a ";" */
#define SERVER_LOCK() do {} while(0) /* no-op, but require a ";" */
#define SERVER_UNLOCK() do {} while(0) /* no-op, but require a ";" */
#endif /* !NONETWORK*/
============
To me it looks like SERVER_LOCK() IS getting defined if there is NO NETWORK
and it is NOT getting defined if there IS A NETWORK. Why would we need
SERVER_LOCK() if there is no network? Is this backwards?
Thanks,
Mark
