diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/elision-trylock.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/elision-trylock.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c b/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c index 0807a6a432..fabb03b2c4 100644 --- a/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c +++ b/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c @@ -1,5 +1,5 @@ /* elision-trylock.c: Lock eliding trylock for pthreads. - Copyright (C) 2015-2016 Free Software Foundation, Inc. + Copyright (C) 2015-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -30,11 +30,12 @@ int __lll_trylock_elision (int *futex, short *adapt_count) { +#ifndef __SPE__ /* Implement POSIX semantics by forbiding nesting elided trylocks. */ __libc_tabort (_ABORT_NESTED_TRYLOCK); /* Only try a transaction if it's worth it. */ - if (*adapt_count > 0) + if (atomic_load_relaxed (adapt_count) > 0) { goto use_lock; } @@ -49,7 +50,7 @@ __lll_trylock_elision (int *futex, short *adapt_count) __libc_tend (0); if (aconf.skip_lock_busy > 0) - *adapt_count = aconf.skip_lock_busy; + atomic_store_relaxed (adapt_count, aconf.skip_lock_busy); } else { @@ -59,10 +60,12 @@ __lll_trylock_elision (int *futex, short *adapt_count) result in another failure. Use normal locking now and for the next couple of calls. */ if (aconf.skip_trylock_internal_abort > 0) - *adapt_count = aconf.skip_trylock_internal_abort; + atomic_store_relaxed (adapt_count, + aconf.skip_trylock_internal_abort); } } use_lock: +#endif return lll_trylock (*futex); } |