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Diffstat (limited to 'Source/DirectFB/lib/direct/system.c')
-rwxr-xr-x | Source/DirectFB/lib/direct/system.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/Source/DirectFB/lib/direct/system.c b/Source/DirectFB/lib/direct/system.c new file mode 100755 index 0000000..b4b5b29 --- /dev/null +++ b/Source/DirectFB/lib/direct/system.c @@ -0,0 +1,68 @@ +/* + (c) Copyright 2001-2009 The world wide DirectFB Open Source Community (directfb.org) + (c) Copyright 2000-2004 Convergence (integrated media) GmbH + + All rights reserved. + + Written by Denis Oliver Kropp <dok@directfb.org>, + Andreas Hundt <andi@fischlustig.de>, + Sven Neumann <neo@directfb.org>, + Ville Syrjälä <syrjala@sci.fi> and + Claudio Ciccani <klan@users.sf.net>. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the + Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. +*/ + +#include <config.h> + +#include <errno.h> +#include <unistd.h> + +#include <direct/build.h> +#include <direct/system.h> + +#if DIRECT_BUILD_GETTID && defined(HAVE_LINUX_UNISTD_H) +#include <linux/unistd.h> +#endif + +__attribute__((no_instrument_function)) +pid_t +direct_gettid( void ) +{ + pid_t tid = -1; +#if DIRECT_BUILD_GETTID && defined(__NR_gettid) /* present on linux >= 2.4.20 */ + tid = syscall(__NR_gettid); +#endif + if (tid < 0) + tid = getpid(); + + return tid; +} + +long +direct_pagesize( void ) +{ + return sysconf( _SC_PAGESIZE ); +} + +unsigned long +direct_page_align( unsigned long value ) +{ + unsigned long mask = sysconf( _SC_PAGESIZE ) - 1; + + return (value + mask) & ~mask; +} + |