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(trunk libT) use a better data struct for the tr_datatype list in peer-io

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This commit is contained in:
Jordan Lee 2011-04-10 05:21:51 +00:00
parent 3d366c2892
commit 05b75e6e9f
2 changed files with 74 additions and 23 deletions
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93
libtransmission/peer-io.c
View file

@ -24,7 +24,6 @@
#include "session.h"
#include "bandwidth.h"
#include "crypto.h"
#include "list.h"
#include "net.h"
#include "peer-common.h" /* MAX_BLOCK_SIZE */
#include "peer-io.h"
@ -77,12 +76,69 @@ guessPacketOverhead( size_t d )
tr_deepLog( __FILE__, __LINE__, tr_peerIoGetAddrStr( io ), __VA_ARGS__ ); \
} while( 0 )
/**
***
**/
struct tr_datatype
{
bool isPieceData;
size_t length;
struct tr_datatype * next;
size_t length;
bool isPieceData;
};
static struct tr_datatype * datatype_pool = NULL;
static const struct tr_datatype TR_DATATYPE_INIT = { NULL, 0, false };
static struct tr_datatype *
datatype_new( void )
{
struct tr_datatype * ret;
if( datatype_pool == NULL )
ret = tr_new( struct tr_datatype, 1 );
else {
ret = datatype_pool;
datatype_pool = datatype_pool->next;
}
*ret = TR_DATATYPE_INIT;
return ret;
}
static void
datatype_free( struct tr_datatype * datatype )
{
datatype->next = datatype_pool;
datatype_pool = datatype;
}
static void
peer_io_pull_datatype( tr_peerIo * io )
{
struct tr_datatype * tmp;
if(( tmp = io->outbuf_datatypes ))
{
io->outbuf_datatypes = tmp->next;
datatype_free( tmp );
}
}
static void
peer_io_push_datatype( tr_peerIo * io, struct tr_datatype * datatype )
{
struct tr_datatype * tmp;
if(( tmp = io->outbuf_datatypes )) {
while( tmp->next != NULL )
tmp = tmp->next;
tmp->next = datatype;
} else {
io->outbuf_datatypes = datatype;
}
}
/***
****
@ -93,7 +149,7 @@ didWriteWrapper( tr_peerIo * io, unsigned int bytes_transferred )
{
while( bytes_transferred && tr_isPeerIo( io ) )
{
struct tr_datatype * next = io->outbuf_datatypes->data;
struct tr_datatype * next = io->outbuf_datatypes;
const unsigned int payload = MIN( next->length, bytes_transferred );
/* For uTP sockets, the overhead is computed in utp_on_overhead. */
@ -113,10 +169,8 @@ didWriteWrapper( tr_peerIo * io, unsigned int bytes_transferred )
{
bytes_transferred -= payload;
next->length -= payload;
if( !next->length ) {
tr_list_pop_front( &io->outbuf_datatypes );
tr_free( next );
}
if( !next->length )
peer_io_pull_datatype( io );
}
}
}
@ -755,7 +809,9 @@ io_dtor( void * vio )
evbuffer_free( io->inbuf );
io_close_socket( io );
tr_cryptoFree( io->crypto );
tr_list_free( &io->outbuf_datatypes, tr_free );
while( io->outbuf_datatypes != NULL )
peer_io_pull_datatype( io );
memset( io, ~0, sizeof( tr_peerIo ) );
tr_free( io );
@ -973,11 +1029,10 @@ static void
addDatatype( tr_peerIo * io, size_t byteCount, bool isPieceData )
{
struct tr_datatype * d;
d = tr_new( struct tr_datatype, 1 );
d = datatype_new( );
d->isPieceData = isPieceData != 0;
d->length = byteCount;
tr_list_append( &io->outbuf_datatypes, d );
peer_io_push_datatype( io, d );
}
static void
@ -1055,7 +1110,7 @@ tr_peerIoReadBytesToBuf( tr_peerIo * io, struct evbuffer * inbuf, struct evbuffe
const size_t old_length = evbuffer_get_length( outbuf );
assert( tr_isPeerIo( io ) );
assert( evbuffer_get_length( inbuf ) >= byteCount );
assert( evbuffer_get_length( inbuf ) >= byteCount );
/* append it to outbuf */
tmp = evbuffer_new( );
@ -1248,19 +1303,15 @@ int
tr_peerIoFlushOutgoingProtocolMsgs( tr_peerIo * io )
{
size_t byteCount = 0;
tr_list * it;
const struct tr_datatype * it;
/* count up how many bytes are used by non-piece-data messages
at the front of our outbound queue */
for( it=io->outbuf_datatypes; it!=NULL; it=it->next )
{
struct tr_datatype * d = it->data;
if( d->isPieceData )
if( it->isPieceData )
break;
byteCount += d->length;
}
else
byteCount += it->length;
return tr_peerIoFlush( io, TR_UP, byteCount );
}

4
libtransmission/peer-io.h
View file

@ -31,8 +31,8 @@
struct evbuffer;
struct tr_bandwidth;
struct tr_crypto;
struct tr_datatype;
struct tr_peerIo;
struct tr_list;
/**
* @addtogroup networked_io Networked IO
@ -111,7 +111,7 @@ typedef struct tr_peerIo
struct evbuffer * inbuf;
struct evbuffer * outbuf;
struct tr_list * outbuf_datatypes; /* struct tr_datatype */
struct tr_datatype * outbuf_datatypes;
struct event * event_read;
struct event * event_write;