spiochannel.cpp
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/*
* Copyright 2007 Stephen Liu
* For license terms, see the file COPYING along with this library.
*/
#include <string.h>
#include <assert.h>
#include "spporting.hpp"
#include "spiochannel.hpp"
#include "sputils.hpp"
#include "spresponse.hpp"
#include "spsession.hpp"
#include "spbuffer.hpp"
#include "spmsgblock.hpp"
#ifdef WIN32
#include "spwin32buffer.hpp"
#include "spiocpevent.hpp"
#include "spwin32iocp.hpp"
#else
#include "speventcb.hpp"
#include "event.h"
#endif
//---------------------------------------------------------
SP_IOChannel :: ~SP_IOChannel()
{
}
sp_evbuffer_t * SP_IOChannel :: getEvBuffer( SP_Buffer * buffer )
{
return buffer->mBuffer;
}
int SP_IOChannel :: transmit( SP_Session * session )
{
#ifdef WIN32
const static int SP_MAX_IOV = MSG_MAXIOVLEN;
SP_IocpSession_t * iocpSession = (SP_IocpSession_t*)session->getArg();
SP_IocpEventArg * eventArg = iocpSession->mEventArg;
#else
# ifdef IOV_MAX
const static int SP_MAX_IOV = IOV_MAX;
# else
const static int SP_MAX_IOV = 8;
# endif
SP_EventArg * eventArg = (SP_EventArg*)session->getArg();
#endif
SP_ArrayList * outList = session->getOutList();
size_t outOffset = session->getOutOffset();
struct iovec iovArray[ SP_MAX_IOV ];
memset( iovArray, 0, sizeof( iovArray ) );
int iovSize = 0;
for( int i = 0; i < outList->getCount() && iovSize < SP_MAX_IOV; i++ ) {
SP_Message * msg = (SP_Message*)outList->getItem( i );
if( outOffset >= msg->getMsg()->getSize() ) {
outOffset -= msg->getMsg()->getSize();
} else {
iovArray[ iovSize ].iov_base = (char*)msg->getMsg()->getBuffer() + outOffset;
iovArray[ iovSize++ ].iov_len = msg->getMsg()->getSize() - outOffset;
outOffset = 0;
}
SP_MsgBlockList * blockList = msg->getFollowBlockList();
for( int j = 0; j < blockList->getCount() && iovSize < SP_MAX_IOV; j++ ) {
SP_MsgBlock * block = (SP_MsgBlock*)blockList->getItem( j );
if( outOffset >= block->getSize() ) {
outOffset -= block->getSize();
} else {
iovArray[ iovSize ].iov_base = (char*)block->getData() + outOffset;
iovArray[ iovSize++ ].iov_len = block->getSize() - outOffset;
outOffset = 0;
}
}
}
int len = write_vec( iovArray, iovSize );
if( len > 0 ) {
outOffset = session->getOutOffset() + len;
for( ; outList->getCount() > 0; ) {
SP_Message * msg = (SP_Message*)outList->getItem( 0 );
if( outOffset >= msg->getTotalSize() ) {
msg = (SP_Message*)outList->takeItem( 0 );
outOffset = outOffset - msg->getTotalSize();
int index = msg->getToList()->find( session->getSid() );
if( index >= 0 ) msg->getToList()->take( index );
msg->getSuccess()->add( session->getSid() );
if( msg->getToList()->getCount() <= 0 ) {
eventArg->getOutputResultQueue()->push( msg );
}
} else {
break;
}
}
session->setOutOffset( outOffset );
}
if( len > 0 && outList->getCount() > 0 ) {
int tmpLen = transmit( session );
if( tmpLen > 0 ) len += tmpLen;
}
return len;
}
//---------------------------------------------------------
SP_IOChannelFactory :: ~SP_IOChannelFactory()
{
}
//---------------------------------------------------------
SP_DefaultIOChannel :: SP_DefaultIOChannel()
{
mFd = -1;
}
SP_DefaultIOChannel :: ~SP_DefaultIOChannel()
{
mFd = -1;
}
int SP_DefaultIOChannel :: init( int fd )
{
mFd = fd;
return 0;
}
int SP_DefaultIOChannel :: receive( SP_Session * session )
{
#ifdef WIN32
return spwin32buffer_read( getEvBuffer( session->getInBuffer() ), mFd, -1 );
#else
return evbuffer_read( getEvBuffer( session->getInBuffer() ), mFd, -1 );
#endif
}
int SP_DefaultIOChannel :: write_vec( struct iovec * iovArray, int iovSize )
{
return sp_writev( mFd, iovArray, iovSize );
}
//---------------------------------------------------------
SP_DefaultIOChannelFactory :: SP_DefaultIOChannelFactory()
{
}
SP_DefaultIOChannelFactory :: ~SP_DefaultIOChannelFactory()
{
}
SP_IOChannel * SP_DefaultIOChannelFactory :: create() const
{
return new SP_DefaultIOChannel();
}