-/* $Id: msg-thread.cpp,v 1.1 2005-10-06 09:37:25 marc Exp $
- Copyright (c) 1998-2005, Index Data.
-
-This file is part of the yaz-proxy.
-
-YAZ proxy is free software; you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
-version.
-
-YAZ proxy is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY; without even the implied warranty of MERCHANTABILITY or
-FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-for more details.
-
-You should have received a copy of the GNU General Public License
-along with YAZ proxy; see the file LICENSE. If not, write to the
-Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.
- */
-#include <pthread.h>
-#include <unistd.h>
-#include <ctype.h>
-#include <stdio.h>
-
-#include <yaz++/socket-observer.h>
-#include <yaz/log.h>
-
-#include "msg-thread.h"
-
-using namespace yazpp_1;
-
-IMsg_Thread::~IMsg_Thread()
-{
-
-}
-
-Msg_Thread_Queue::Msg_Thread_Queue()
-{
- m_list = 0;
-}
-
-int Msg_Thread_Queue::size()
-{
- int no = 0;
- Msg_Thread_Queue_List *l;
- for (l = m_list; l; l = l->m_next)
- no++;
- return no;
-}
-
-void Msg_Thread_Queue::enqueue(IMsg_Thread *m)
-{
- Msg_Thread_Queue_List *l = new Msg_Thread_Queue_List;
- l->m_next = m_list;
- l->m_item = m;
- m_list = l;
-}
-
-IMsg_Thread *Msg_Thread_Queue::dequeue()
-{
- Msg_Thread_Queue_List **l = &m_list;
- if (!*l)
- return 0;
- while ((*l)->m_next)
- l = &(*l)->m_next;
- IMsg_Thread *m = (*l)->m_item;
- delete *l;
- *l = 0;
- return m;
-}
-
-static void *tfunc(void *p)
-{
- Msg_Thread *pt = (Msg_Thread *) p;
- pt->run(0);
- return 0;
-}
-
-
-Msg_Thread::Msg_Thread(ISocketObservable *obs, int no_threads)
- : m_SocketObservable(obs)
-{
- pipe(m_fd);
- obs->addObserver(m_fd[0], this);
- obs->maskObserver(this, SOCKET_OBSERVE_READ);
-
- m_stop_flag = false;
- pthread_mutex_init(&m_mutex_input_data, 0);
- pthread_cond_init(&m_cond_input_data, 0);
- pthread_mutex_init(&m_mutex_output_data, 0);
-
- m_no_threads = no_threads;
- m_thread_id = new pthread_t[no_threads];
- int i;
- for (i = 0; i<m_no_threads; i++)
- pthread_create(&m_thread_id[i], 0, tfunc, this);
-}
-
-Msg_Thread::~Msg_Thread()
-{
- pthread_mutex_lock(&m_mutex_input_data);
- m_stop_flag = true;
- pthread_cond_broadcast(&m_cond_input_data);
- pthread_mutex_unlock(&m_mutex_input_data);
-
- int i;
- for (i = 0; i<m_no_threads; i++)
- pthread_join(m_thread_id[i], 0);
- delete [] m_thread_id;
-
- m_SocketObservable->deleteObserver(this);
-
- pthread_cond_destroy(&m_cond_input_data);
- pthread_mutex_destroy(&m_mutex_input_data);
- pthread_mutex_destroy(&m_mutex_output_data);
- close(m_fd[0]);
- close(m_fd[1]);
-}
-
-void Msg_Thread::socketNotify(int event)
-{
- if (event & SOCKET_OBSERVE_READ)
- {
- char buf[2];
- read(m_fd[0], buf, 1);
- pthread_mutex_lock(&m_mutex_output_data);
- IMsg_Thread *out = m_output.dequeue();
- pthread_mutex_unlock(&m_mutex_output_data);
- if (out)
- out->result();
- }
-}
-
-void Msg_Thread::run(void *p)
-{
- while(1)
- {
- pthread_mutex_lock(&m_mutex_input_data);
- while (!m_stop_flag && m_input.size() == 0)
- pthread_cond_wait(&m_cond_input_data, &m_mutex_input_data);
- if (m_stop_flag)
- {
- pthread_mutex_unlock(&m_mutex_input_data);
- break;
- }
- IMsg_Thread *in = m_input.dequeue();
- pthread_mutex_unlock(&m_mutex_input_data);
-
- IMsg_Thread *out = in->handle();
- pthread_mutex_lock(&m_mutex_output_data);
- m_output.enqueue(out);
-
- write(m_fd[1], "", 1);
- pthread_mutex_unlock(&m_mutex_output_data);
- }
-}
-
-void Msg_Thread::put(IMsg_Thread *m)
-{
- pthread_mutex_lock(&m_mutex_input_data);
- m_input.enqueue(m);
- pthread_cond_signal(&m_cond_input_data);
- pthread_mutex_unlock(&m_mutex_input_data);
-}
-/*
- * Local variables:
- * c-basic-offset: 4
- * indent-tabs-mode: nil
- * End:
- * vim: shiftwidth=4 tabstop=8 expandtab
- */
-