mirror/opentracker
1
0
Fork 0
mirror of git://erdgeist.org/opentracker synced 2025-02-17 06:31:30 +08:00
Code Issues Packages Projects Releases Wiki Activity

Parse accesslist file by mmaping the whole thing and searching for lines by ourself. fgets is slooooooow on linux.

Browse Source
This commit is contained in:
erdgeist 2009-07-14 21:22:02 +00:00
parent bb9650f55e
commit 553f62329a
1 changed files with 19 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
ot_accesslist.c
View File

@ -14,6 +14,7 @@
#include "byte.h" #include "byte.h"
#include "scan.h" #include "scan.h"
#include "ip6.h" #include "ip6.h"
#include "mmap.h"
/* Opentracker */ /* Opentracker */
#include "trackerlogic.h" #include "trackerlogic.h"
@ -48,17 +49,15 @@ static int accesslist_addentry( ot_vector *al, ot_hash infohash ) {
/* Read initial access list */ /* Read initial access list */
static void accesslist_readfile( int sig ) { static void accesslist_readfile( int sig ) {
FILE * accesslist_filehandle;
ot_hash infohash; ot_hash infohash;
ot_vector accesslist_tmp; ot_vector accesslist_tmp;
void *olddata; void *olddata;
char inbuf[512]; char *map, *map_end, *read_offs;
size_t maplen;
if( sig != SIGHUP ) return; if( sig != SIGHUP ) return;
accesslist_filehandle = fopen( g_accesslist_filename, "r" ); if( ( map = mmap_read( g_accesslist_filename, &maplen ) ) == NULL ) {
if( accesslist_filehandle == NULL ) {
char *wd = getcwd( NULL, 0 ); char *wd = getcwd( NULL, 0 );
fprintf( stderr, "Warning: Can't open accesslist file: %s (but will try to create it later, if necessary and possible).\nPWD: %s\n", g_accesslist_filename, wd ); fprintf( stderr, "Warning: Can't open accesslist file: %s (but will try to create it later, if necessary and possible).\nPWD: %s\n", g_accesslist_filename, wd );
free( wd ); free( wd );
@ -68,26 +67,34 @@ static void accesslist_readfile( int sig ) {
/* Initialise an empty accesslist vector */ /* Initialise an empty accesslist vector */
memset( &accesslist_tmp, 0, sizeof(accesslist_tmp)); memset( &accesslist_tmp, 0, sizeof(accesslist_tmp));
/* No use */
map_end = map + maplen - 41;
read_offs = map;
/* We do ignore anything that is not of the form "^[:xdigit:]{40}[^:xdigit:].*" */ /* We do ignore anything that is not of the form "^[:xdigit:]{40}[^:xdigit:].*" */
while( fgets( inbuf, sizeof(inbuf), accesslist_filehandle ) ) { while( read_offs < map_end ) {
int i; int i;
for( i=0; i<(int)sizeof(ot_hash); ++i ) { for( i=0; i<(int)sizeof(ot_hash); ++i ) {
int eger = 16 * scan_fromhex( inbuf[ 2*i ] ) + scan_fromhex( inbuf[ 1 + 2*i ] ); int eger = 16 * scan_fromhex( read_offs[ 2*i ] ) + scan_fromhex( read_offs[ 1 + 2*i ] );
if( eger < 0 ) if( eger < 0 )
continue; continue;
infohash[i] = eger; infohash[i] = eger;
} }
if( scan_fromhex( inbuf[ 40 ] ) >= 0 )
continue; read_offs += 40;
/* Append accesslist to accesslist vector */ /* Append accesslist to accesslist vector */
accesslist_addentry( &accesslist_tmp, infohash ); if( scan_fromhex( *read_offs ) < 0 )
accesslist_addentry( &accesslist_tmp, infohash );
/* Find start of next line */
while( read_offs < map_end && *(read_offs++) != '\n' );
} }
#ifdef _DEBUG #ifdef _DEBUG
fprintf( stderr, "Added %zd info_hashes to accesslist\n", accesslist_tmp.size ); fprintf( stderr, "Added %zd info_hashes to accesslist\n", accesslist_tmp.size );
#endif #endif
fclose( accesslist_filehandle ); mmap_unmap( map, maplen);
/* Now exchange the accesslist vector in the least race condition prone way */ /* Now exchange the accesslist vector in the least race condition prone way */
accesslist.size = 0; accesslist.size = 0;