diff options
Diffstat (limited to 'libc/nptl/sysdeps/unix/sysv/linux/x86/elision-trylock.c')
| -rw-r--r-- | libc/nptl/sysdeps/unix/sysv/linux/x86/elision-trylock.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/libc/nptl/sysdeps/unix/sysv/linux/x86/elision-trylock.c b/libc/nptl/sysdeps/unix/sysv/linux/x86/elision-trylock.c index 689a6fbe2..f6c47ef42 100644 --- a/libc/nptl/sysdeps/unix/sysv/linux/x86/elision-trylock.c +++ b/libc/nptl/sysdeps/unix/sysv/linux/x86/elision-trylock.c @@ -14,7 +14,7 @@ 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> @@ -24,14 +24,14 @@ #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); @@ -46,7 +46,7 @@ __lll_trylock_elision (int *futex, short *adapt_count) 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); @@ -54,12 +54,12 @@ __lll_trylock_elision (int *futex, short *adapt_count) 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 { |