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git://xwords.git.sourceforge.net/gitroot/xwords/xwords
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104 lines
2.6 KiB
C++
104 lines
2.6 KiB
C++
/* -*- compile-command: "make -k -j3"; -*- */
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/*
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* Copyright 2010-2012 by Eric House (xwords@eehouse.org). All rights
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* reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "udpqueue.h"
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#include "mlock.h"
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static UdpQueue* s_instance = NULL;
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void
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UdpThreadClosure::logStats()
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{
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time_t now = time( NULL );
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if ( 1 < now - m_created ) {
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logf( XW_LOGERROR, "packet waited %d s for processing which then took %d s",
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m_dequed - m_created, now - m_dequed );
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}
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}
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UdpQueue::UdpQueue()
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{
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pthread_mutex_init ( &m_queueMutex, NULL );
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pthread_cond_init( &m_queueCondVar, NULL );
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pthread_t thread;
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int result = pthread_create( &thread, NULL, thread_main_static, this );
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assert( result == 0 );
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result = pthread_detach( thread );
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assert( result == 0 );
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}
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UdpQueue::~UdpQueue()
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{
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pthread_cond_destroy( &m_queueCondVar );
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pthread_mutex_destroy ( &m_queueMutex );
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}
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UdpQueue*
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UdpQueue::get()
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{
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if ( s_instance == NULL ) {
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s_instance = new UdpQueue();
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}
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return s_instance;
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}
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void
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UdpQueue::handle( const AddrInfo* addr, unsigned char* buf, int len,
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QueueCallback cb )
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{
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UdpThreadClosure* utc = new UdpThreadClosure( addr, buf, len, cb );
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MutexLock ml( &m_queueMutex );
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m_queue.push_back( utc );
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pthread_cond_signal( &m_queueCondVar );
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}
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void*
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UdpQueue::thread_main()
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{
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for ( ; ; ) {
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pthread_mutex_lock( &m_queueMutex );
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while ( m_queue.size() == 0 ) {
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pthread_cond_wait( &m_queueCondVar, &m_queueMutex );
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}
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UdpThreadClosure* utc = m_queue.front();
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m_queue.pop_front();
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pthread_mutex_unlock( &m_queueMutex );
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utc->noteDequeued();
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(*utc->cb())( utc );
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utc->logStats();
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delete utc;
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}
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return NULL;
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}
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/* static */ void*
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UdpQueue::thread_main_static( void* closure )
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{
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blockSignals();
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UdpQueue* me = (UdpQueue*)closure;
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return me->thread_main();
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}
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