+/* $Id: msg-thread.cpp,v 1.1 2005-05-30 20:08:58 adam 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 <yaz++/socket-observer.h>
+#include <yaz/log.h>
+
+#include "msg-thread.h"
+
+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(IYazSocketObservable *obs)
+ : m_SocketObservable(obs)
+{
+ pipe(m_fd);
+ obs->addObserver(m_fd[0], this);
+ obs->maskObserver(this, YAZ_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);
+ pthread_cond_init(&m_cond_output_data, 0);
+ pthread_create(&m_thread_id, 0, tfunc, this);
+}
+
+Msg_Thread::~Msg_Thread()
+{
+ pthread_mutex_lock(&m_mutex_input_data);
+ m_stop_flag = true;
+ pthread_cond_signal(&m_cond_input_data);
+ pthread_mutex_unlock(&m_mutex_input_data);
+
+ pthread_join(m_thread_id, 0);
+
+ m_SocketObservable->deleteObserver(this);
+
+ pthread_cond_destroy(&m_cond_input_data);
+ pthread_mutex_destroy(&m_mutex_input_data);
+ pthread_cond_destroy(&m_cond_output_data);
+ pthread_mutex_destroy(&m_mutex_output_data);
+ close(m_fd[0]);
+ close(m_fd[1]);
+}
+
+void Msg_Thread::socketNotify(int event)
+{
+ if (event & YAZ_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);
+ pthread_cond_wait(&m_cond_input_data, &m_mutex_input_data);
+ while (1)
+ {
+ if (m_stop_flag)
+ {
+ pthread_mutex_unlock(&m_mutex_input_data);
+ return;
+ }
+ IMsg_Thread *in = m_input.dequeue();
+ pthread_mutex_unlock(&m_mutex_input_data);
+ if (!in)
+ break;
+ IMsg_Thread *out = in->handle();
+ pthread_mutex_lock(&m_mutex_output_data);
+ m_output.enqueue(out);
+ pthread_cond_signal(&m_cond_output_data);
+ pthread_mutex_unlock(&m_mutex_output_data);
+
+ write(m_fd[1], "", 1);
+
+ pthread_mutex_lock(&m_mutex_input_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);
+}