/**
* vips_tracked_open:
* @pathname: name of file to open
* @flags: flags for open()
* @...: open mode
*
* Exactly as open(2), but the number of files current open via
* vips_tracked_open() is available via vips_tracked_get_files(). This is used
* by the vips operation cache to drop cache when the number of files
* available is low.
*
* You must only close the file descriptor with vips_tracked_close().
*
* See also: vips_tracked_close(), vips_tracked_get_files().
*
* Returns: a file descriptor, or -1 on error.
*/
int
vips_tracked_open( const char *pathname, int flags, ... )
{
int fd;
mode_t mode;
va_list ap;
/* mode_t is promoted to int in ..., so we have to pull it out as an
* int.
*/
va_start( ap, flags );
mode = va_arg( ap, int );
va_end( ap );
if( (fd = vips__open( pathname, flags, mode )) == -1 )
return( -1 );
vips_tracked_init();
g_mutex_lock( vips_tracked_mutex );
vips_tracked_files += 1;
#ifdef DEBUG
printf( "vips_tracked_open: %s = %d (%d)\n",
pathname, fd, vips_tracked_files );
#endif /*DEBUG*/
g_mutex_unlock( vips_tracked_mutex );
return( fd );
}
int
vips__open_read( const char *filename )
{
return( vips__open( filename, MODE_READONLY ) );
}
