2013-07-19 Dominik Vogt <vogt@de.ibm.com>
+ * pthread_mutex_lock.c: Fix whitespace.
+ * pthread_mutex_trylock.c: Likewise.
+ * sysdeps/unix/sysv/linux/x86/bits/pthreadtypes.h: Likewise.
+ * sysdeps/unix/sysv/linux/x86/elision-conf.c: Likewise.
+ * sysdeps/unix/sysv/linux/x86/elision-conf.h: Likewise.
+ * sysdeps/unix/sysv/linux/x86/elision-lock.c: Likewise.
+ * sysdeps/unix/sysv/linux/x86/elision-timed.c: Likewise.
+ * sysdeps/unix/sysv/linux/x86/elision-trylock.c: Likewise.
+ * sysdeps/unix/sysv/linux/x86/force-elision.h: Likewise.
+ * sysdeps/unix/sysv/linux/x86/hle.h: Likewise.
+ * sysdeps/unix/sysv/linux/x86/pthread_mutex_cond_lock.c: Likewise.
+ * sysdeps/unix/sysv/linux/x86/pthread_mutex_lock.c: Likewise.
+ * sysdeps/unix/sysv/linux/x86/pthread_mutex_timedlock.c: Likewise.
+ * sysdeps/unix/sysv/linux/x86/pthread_mutex_trylock.c: Likewise.
+
* sysdeps/unix/sysv/linux/x86/elision-conf.c:
Remove __rwlock_rtm_enabled and __rwlock_rtm_read_retries.
(elision_init): Don't set __rwlock_rtm_enabled.
/* This case can never happen on a system without elision,
as the mutex type initialization functions will not
allow to set the elision flags. */
- /* Don't record owner or users for elision case. This is a
+ /* Don't record owner or users for elision case. This is a
tail call. */
return LLL_MUTEX_LOCK_ELISION (mutex);
}
#endif
/* We don't force elision in trylock, because this can lead to inconsistent
- lock state if the lock was actually busy. */
+ lock state if the lock was actually busy. */
int
__pthread_mutex_trylock (mutex)
if (lll_trylock_elision (mutex->__data.__lock,
mutex->__data.__elision) != 0)
break;
- /* Don't record the ownership. */
+ /* Don't record the ownership. */
return 0;
case PTHREAD_MUTEX_TIMED_NP:
{
struct
{
- short __espins;
+ short __espins;
short __elision;
# define __spins d.__espins
# define __elision d.__elision
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <http://www.gnu.org/licenses/>. */
#include "config.h"
#include <pthreadP.h>
acquisition attempts. */
.skip_lock_busy = 3,
/* How often to not attempt to use elision if a transaction aborted due
- to reasons other than other threads' memory accesses. Expressed in
+ to reasons other than other threads' memory accesses. Expressed in
number of lock acquisition attempts. */
.skip_lock_internal_abort = 3,
/* How often we retry using elision if there is chance for the transaction
.skip_trylock_internal_abort = 3,
};
-/* Set when the CPU supports elision. When false elision is never attempted. */
+/* Set when the CPU supports elision. When false elision is never attempted.
+ */
int __elision_available attribute_hidden;
-/* Force elision for all new locks. This is used to decide whether existing
+/* Force elision for all new locks. This is used to decide whether existing
DEFAULT locks should be automatically upgraded to elision in
- pthread_mutex_lock(). Disabled for suid programs. Only used when elision
+ pthread_mutex_lock(). Disabled for suid programs. Only used when elision
is available. */
int __pthread_force_elision attribute_hidden;
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <http://www.gnu.org/licenses/>. */
#ifndef _ELISION_CONF_H
#define _ELISION_CONF_H 1
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <http://www.gnu.org/licenses/>. */
#include <pthread.h>
#include "pthreadP.h"
if (*futex == 0)
return 0;
- /* Lock was busy. Fall back to normal locking.
+ /* Lock was busy. Fall back to normal locking.
Could also _xend here but xabort with 0xff code
is more visible in the profiler. */
_xabort (_ABORT_LOCK_BUSY);
if ((status & _XABORT_EXPLICIT)
&& _XABORT_CODE (status) == _ABORT_LOCK_BUSY)
{
- /* Right now we skip here. Better would be to wait a bit
- and retry. This likely needs some spinning. */
+ /* Right now we skip here. Better would be to wait a bit
+ and retry. This likely needs some spinning. */
if (*adapt_count != aconf.skip_lock_busy)
*adapt_count = aconf.skip_lock_busy;
}
- /* Internal abort. There is no chance for retry.
+ /* Internal abort. There is no chance for retry.
Use the normal locking and next time use lock.
Be careful to avoid writing to the lock. */
else if (*adapt_count != aconf.skip_lock_internal_abort)
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <http://www.gnu.org/licenses/>. */
#include <time.h>
#include <elision-conf.h>
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <http://www.gnu.org/licenses/>. */
#include <pthread.h>
#include <pthreadP.h>
#define aconf __elision_aconf
-/* Try to elide a futex trylock. FUTEX is the futex variable. ADAPT_COUNT is the
- adaptation counter in the mutex. */
+/* Try to elide a futex trylock. FUTEX is the futex variable. ADAPT_COUNT is
+ the adaptation counter in the mutex. */
int
__lll_trylock_elision (int *futex, short *adapt_count)
{
/* Implement POSIX semantics by forbiding nesting
- trylock. Sorry. After the abort the code is re-executed
+ trylock. Sorry. After the abort the code is re-executed
non transactional and if the lock was already locked
return an error. */
_xabort (_ABORT_NESTED_TRYLOCK);
if (*futex == 0)
return 0;
- /* Lock was busy. Fall back to normal locking.
+ /* Lock was busy. Fall back to normal locking.
Could also _xend here but xabort with 0xff code
is more visible in the profiler. */
_xabort (_ABORT_LOCK_BUSY);
if (!(status & _XABORT_RETRY))
{
- /* Internal abort. No chance for retry. For future
+ /* Internal abort. No chance for retry. For future
locks don't try speculation for some time. */
if (*adapt_count != aconf.skip_trylock_internal_abort)
*adapt_count = aconf.skip_trylock_internal_abort;
}
- /* Could do some retries here. */
+ /* Could do some retries here. */
}
else
{
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <http://www.gnu.org/licenses/>. */
/* Check for elision on this lock without upgrading. */
#define DO_ELISION(m) \
-/* Shared RTM header. Emulate TSX intrinsics for compilers and assemblers
- that do not support the intrinsics and instructions yet. */
+/* Shared RTM header. Emulate TSX intrinsics for compilers and assemblers
+ that do not support the intrinsics and instructions yet. */
#ifndef _HLE_H
#define _HLE_H 1
/* Official RTM intrinsics interface matching gcc/icc, but works
on older gcc compatible compilers and binutils.
We should somehow detect if the compiler supports it, because
- it may be able to generate slightly better code. */
+ it may be able to generate slightly better code. */
#define _XBEGIN_STARTED (~0u)
#define _XABORT_EXPLICIT (1 << 0)
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <http://www.gnu.org/licenses/>. */
/* The cond lock is not actually elided yet, but we still need to handle
already elided locks. */
#include <elision-conf.h>
+
#include "sysdeps/unix/sysv/linux/pthread_mutex_cond_lock.c"
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <http://www.gnu.org/licenses/>. */
+
#include <elision-conf.h>
#include "force-elision.h"
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <http://www.gnu.org/licenses/>. */
+
#include <elision-conf.h>
#include "force-elision.h"
+
#include "nptl/pthread_mutex_timedlock.c"
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <http://www.gnu.org/licenses/>. */
+
#include <elision-conf.h>
#include "force-elision.h"
projects / thirdparty / glibc.git / commitdiff
