diff options
Diffstat (limited to 'libc/nptl/pthreadP.h')
| -rw-r--r-- | libc/nptl/pthreadP.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libc/nptl/pthreadP.h b/libc/nptl/pthreadP.h index 993a79e25..d08b219b5 100644 --- a/libc/nptl/pthreadP.h +++ b/libc/nptl/pthreadP.h @@ -577,4 +577,16 @@ extern void __wait_lookup_done (void) attribute_hidden; # define PTHREAD_STATIC_FN_REQUIRE(name) __asm (".globl " #name); #endif +/* Test if the mutex is suitable for the FUTEX_WAIT_REQUEUE_PI operation. */ +#if (defined lll_futex_wait_requeue_pi \ + && defined __ASSUME_REQUEUE_PI) +# define USE_REQUEUE_PI(mut) \ + ((mut) && (mut) != (void *) ~0l \ + && (((mut)->__data.__kind \ + & (PTHREAD_MUTEX_PRIO_INHERIT_NP | PTHREAD_MUTEX_ROBUST_NORMAL_NP)) \ + == PTHREAD_MUTEX_PRIO_INHERIT_NP)) +#else +# define USE_REQUEUE_PI(mut) 0 +#endif + #endif /* pthreadP.h */ |