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HP-RK Fix memory corruption problem.

//%/////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2000, 2001, 2002 BMC Software, Hewlett-Packard Company, IBM,
// The Open Group, Tivoli Systems
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
// ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//==============================================================================
//
// Author: Mike Day (mdday@us.ibm.com)
//
// Modified By:
//
//%/////////////////////////////////////////////////////////////////////////////

#include <Pegasus/Common/AsyncOpNode.h>
#include <Pegasus/Common/InternalException.h>

PEGASUS_NAMESPACE_BEGIN

#if defined(PEGASUS_PLATFORM_WIN32_IX86_MSVC)
#define snprintf _snprintf
#endif

#ifdef PEGASUS_ASYNCOPNODE_MEMORY_OPTIMIZATION
AsyncOpNode * AsyncOpNode::_headOfFreeList = 0;
const int AsyncOpNode::BLOCK_SIZE = 200;
Mutex AsyncOpNode::_alloc_mut;

void * AsyncOpNode::operator new(size_t size)
{
   if(size != sizeof(AsyncOpNode))
      return :: operator new(size);

   _alloc_mut.lock(pegasus_thread_self());

   AsyncOpNode *node = _headOfFreeList;
   if(node)
      _headOfFreeList = node->_parent;
   else
   {
      AsyncOpNode * newBlock =
	 reinterpret_cast<AsyncOpNode *>(::operator new( BLOCK_SIZE * sizeof(AsyncOpNode)));
      int i;
      for( i = 1; i < BLOCK_SIZE - 1; ++i)
	 newBlock[i]._parent = &newBlock[i + 1];
      newBlock[BLOCK_SIZE - 1]._parent = NULL;
      node = newBlock;
      _headOfFreeList = &newBlock[1];
   }
   _alloc_mut.unlock();
   return node;
}

void AsyncOpNode::operator delete(void *dead, size_t size)
{

   if(dead == 0)
      return;
   if(size != sizeof(AsyncOpNode))
   {
      ::operator delete(dead);
      return;
   }
   AsyncOpNode *node = reinterpret_cast<AsyncOpNode *>(dead);
   _alloc_mut.lock(pegasus_thread_self());
   node->_parent = _headOfFreeList;
   _headOfFreeList = node;
   _alloc_mut.unlock();
}
#endif // PEGASUS_ASYNCOPNODE_MEMORY_OPTIMIZATION


AsyncOpNode::AsyncOpNode(void)
   : _client_sem(0), _request(true), _response(true),
     _state(0), _flags(0), _offered_count(0), _total_ops(0), _completed_ops(0),
     _user_data(0), _completion_code(0), _op_dest(0),
     _parent(0), _children(true), _async_callback(0),__async_callback(0),
     _callback_node(0), _callback_response_q(0),
     _callback_ptr(0), _callback_parameter(0),
     _callback_handle(0), _callback_notify(0), _callback_request_q(0)
{
   gettimeofday(&_start, NULL);
   memset(&_lifetime, 0x00, sizeof(struct timeval));
   memset(&_updated, 0x00, sizeof(struct timeval));
    _timeout_interval.tv_sec = 60;
   _timeout_interval.tv_usec = 100;
}

AsyncOpNode::~AsyncOpNode(void)
{
   _request.empty_list();
   _response.empty_list();
}

void AsyncOpNode::_reset(unlocked_dq<AsyncOpNode> *dst_q)
{
   AsyncOpNode *child = _children.remove_first();
   while( child != 0 )
   {
      child->_reset(dst_q);
      child = _children.remove_first();
   }

   _parent = 0;
   _request.empty_list();
   _response.empty_list();

   //_operation_list.reset();
   _state = 0;
   _flags = 0;
   _offered_count = 0;
   _total_ops = 0;
   _completed_ops = 0;
   _user_data = 0;
   _completion_code = 0;
   _op_dest = 0;
   _async_callback = 0;
   __async_callback = 0;
   _callback_node =0;
   _callback_response_q = 0;
   _callback_ptr=0;
   _callback_parameter = 0;
   _callback_handle = 0;
   _callback_notify = 0;
   _callback_request_q = 0;
   dst_q->insert_first(this);
   while ( _client_sem.count() )
      _client_sem.wait();
   PEGASUS_ASSERT( _client_sem.count() == 0 );

   return;
}

void AsyncOpNode::print_to_buffer(Sint8 **buf)
{
   if(buf == NULL)
      return;
   
#if !defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM)
   static Sint8 work_buf[4096];
   snprintf(work_buf, 4096, "AsyncOpNode %p\n" \
	    "\trq %d; rp %d; state %d; flags %d; op_dst q %p\n" \
	    "\tcallback node %p; callback rp q %p; callback ptr %p\n" \
	    "\tcallback parm %p; callback handle %p; callback notify %p\n" \
	    "\tcallback rq q %p; service %p; thread %p\n\n",
	    this, _request.count(), _response.count(), 
	    _state, _flags, _op_dest, _callback_node, _callback_response_q,
	    _callback_ptr, _callback_parameter, _callback_handle, _callback_notify,
	    _callback_request_q, _service_ptr, _thread_ptr);
   *buf = strdup(work_buf);
#endif
   return;
   
}

String &AsyncOpNode::print_to_string(void)
{
   static Sint8 work_buf[4096];
#if !defined(PEGASUS_PLATFORM_ZOS_ZSERIES_IBM)
   snprintf(work_buf, 4096, "AsyncOpNode %p\n" \
	    "\trq %d; rp %d; state %d; flags %d; op_dst q %p\n" \
	    "\tcallback node %p; callback rp q %p; callback ptr %p\n" \
	    "\tcallback parm %p; callback handle %p; callback notify %p\n" \
	    "\tcallback rq q %p; service %p; thread %p\n\n",
	    this, _request.count(), _response.count(), 
	    _state, _flags, _op_dest, _callback_node, _callback_response_q,
	    _callback_ptr, _callback_parameter, _callback_handle, _callback_notify,
	    _callback_request_q, _service_ptr, _thread_ptr);
#else
   work_buf[0] = (char)0;
#endif
   String *ret = new String(work_buf);
   
   return *ret;
}

PEGASUS_NAMESPACE_END