##############################################################################
#
# Copyright (c) 2001 Zope Corporation and Contributors. All Rights Reserved.
# 
# This software is subject to the provisions of the Zope Public License,
# Version 2.0 (ZPL).  A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE
# 
##############################################################################
from ZPublisher import publish_module

import ThreadLock

gc_lock = ThreadLock.allocate_lock()
active_threads = [0,]

class ZServerPublisher:
    def __init__(self, accept):
       import os
       import sys
       import gc

       gc.disable()

       while 1:
           try:
               name, request, response=accept()

               gc_lock.acquire()
               active_threads[0] = active_threads[0] + 1
               gc_lock.release()

               publish_module(
                   name,
                   request=request,
                   response=response)
           finally:
               response._finish()
               request=response=None
               gc_lock.acquire()
               a = active_threads[0] - 1

               if a == 0:
                   #sys.stderr.write("Invoking gc.collect()\n")
                   gc.collect()
               else:
                   #sys.stderr.write("Skipping gc.collect(), %d threads active\n"% a)
                   pass

               active_threads[0] = a
               gc_lock.release()