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save a few bytes from each torrent by removing some vestigal rate control locks

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This commit is contained in:
Charles Kerr 2008-03-23 20:54:54 +00:00
parent bc188e86f0
commit c6d57fcdbe
1 changed files with 7 additions and 30 deletions
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37
libtransmission/ratecontrol.c
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@ -29,7 +29,7 @@
#include "ratecontrol.h"
#include "utils.h"
#define GRANULARITY_MSEC 250
#define GRANULARITY_MSEC 500
#define SHORT_INTERVAL_MSEC 4000
#define LONG_INTERVAL_MSEC 8000
#define HISTORY_SIZE (LONG_INTERVAL_MSEC / GRANULARITY_MSEC)
@ -42,7 +42,6 @@ struct tr_transfer
struct tr_ratecontrol
{
tr_lock * lock;
int limit;
int newest;
struct tr_transfer transfers[HISTORY_SIZE];
@ -78,7 +77,6 @@ tr_rcInit( void )
{
tr_ratecontrol * r = tr_new0( tr_ratecontrol, 1 );
r->limit = 0;
r->lock = tr_lockNew( );
return r;
}
@ -86,7 +84,6 @@ void
tr_rcClose( tr_ratecontrol * r )
{
tr_rcReset( r );
tr_lockFree( r->lock );
tr_free( r );
}
@ -101,16 +98,10 @@ tr_rcBytesLeft( const tr_ratecontrol * r )
if( r != NULL )
{
float cur, max, kb;
tr_lockLock( (tr_lock*)r->lock );
cur = rateForInterval( r, SHORT_INTERVAL_MSEC );
max = r->limit;
kb = max>cur ? max-cur : 0;
const float cur = rateForInterval( r, SHORT_INTERVAL_MSEC );
const float max = r->limit;
const float kb = max>cur ? max-cur : 0;
bytes = (size_t)(kb * 1024);
tr_lockUnlock( (tr_lock*)r->lock );
}
return bytes;
@ -119,15 +110,10 @@ tr_rcBytesLeft( const tr_ratecontrol * r )
float
tr_rcRate( const tr_ratecontrol * r )
{
float ret;
float ret = 0.0f;
if( r == NULL )
ret = 0.0f;
else {
tr_lockLock( (tr_lock*)r->lock );
if( r )
ret = rateForInterval( r, LONG_INTERVAL_MSEC );
tr_lockUnlock( (tr_lock*)r->lock );
}
return ret;
}
@ -139,11 +125,8 @@ tr_rcRate( const tr_ratecontrol * r )
void
tr_rcTransferred( tr_ratecontrol * r, size_t size )
{
uint64_t now;
const uint64_t now = tr_date ();
tr_lockLock( (tr_lock*)r->lock );
now = tr_date ();
if( r->transfers[r->newest].date + GRANULARITY_MSEC >= now )
r->transfers[r->newest].size += size;
else {
@ -151,25 +134,19 @@ tr_rcTransferred( tr_ratecontrol * r, size_t size )
r->transfers[r->newest].date = now;
r->transfers[r->newest].size = size;
}
tr_lockUnlock( (tr_lock*)r->lock );
}
void
tr_rcReset( tr_ratecontrol * r )
{
tr_lockLock( (tr_lock*)r->lock );
r->newest = 0;
memset( r->transfers, 0, sizeof(struct tr_transfer) * HISTORY_SIZE );
tr_lockUnlock( (tr_lock*)r->lock );
}
void
tr_rcSetLimit( tr_ratecontrol * r, int limit )
{
tr_lockLock( (tr_lock*)r->lock );
r->limit = limit;
tr_lockUnlock( (tr_lock*)r->lock );
}
int