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(trunk libT) restore setrlimit(), although in an non-configurable mode.

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Jordan Lee 2011-07-11 20:48:06 +00:00
parent 9b208d2777
commit 2c69c42554
1 changed files with 23 additions and 7 deletions
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26
libtransmission/fdlimit.c
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@ -36,10 +36,8 @@
#include <sys/types.h> #include <sys/types.h>
#include <sys/stat.h> #include <sys/stat.h>
#ifdef HAVE_GETRLIMIT
#include <sys/time.h> /* getrlimit */ #include <sys/time.h> /* getrlimit */
#include <sys/resource.h> /* getrlimit */ #include <sys/resource.h> /* getrlimit */
#endif
#include <fcntl.h> /* O_LARGEFILE posix_fadvise */ #include <fcntl.h> /* O_LARGEFILE posix_fadvise */
#include <unistd.h> /* lseek(), write(), ftruncate(), pread(), pwrite(), etc */ #include <unistd.h> /* lseek(), write(), ftruncate(), pread(), pwrite(), etc */
@ -524,10 +522,28 @@ ensureSessionFdInfoExists( tr_session * session )
if( session->fdInfo == NULL ) if( session->fdInfo == NULL )
{ {
const int TR_MAX_OPEN_FILES = 32; struct rlimit limit;
struct tr_fdInfo * i = tr_new0( struct tr_fdInfo, 1 ); struct tr_fdInfo * i;
fileset_construct( &i->fileset, TR_MAX_OPEN_FILES ); const int FILE_CACHE_SIZE = 32;
/* Create the local file cache */
i = tr_new0( struct tr_fdInfo, 1 );
fileset_construct( &i->fileset, FILE_CACHE_SIZE );
session->fdInfo = i; session->fdInfo = i;
/* set the open-file limit to the largest safe size wrt FD_SETSIZE */
if( !getrlimit( RLIMIT_NOFILE, &limit ) )
{
const int old_limit = (int) limit.rlim_cur;
const int new_limit = MIN( limit.rlim_max, FD_SETSIZE );
if( new_limit != old_limit )
{
limit.rlim_cur = new_limit;
setrlimit( RLIMIT_NOFILE, &limit );
getrlimit( RLIMIT_NOFILE, &limit );
tr_inf( "Changed open file limit from %d to %d", old_limit, (int)limit.rlim_cur );
}
}
} }
} }