diff options
Diffstat (limited to 'sysdeps/nptl/futex-internal.h')
| -rw-r--r-- | sysdeps/nptl/futex-internal.h | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/sysdeps/nptl/futex-internal.h b/sysdeps/nptl/futex-internal.h index 301dacc..2533c91 100644 --- a/sysdeps/nptl/futex-internal.h +++ b/sysdeps/nptl/futex-internal.h @@ -38,12 +38,6 @@ return values that callers need to handle. The private flag must be either FUTEX_PRIVATE or FUTEX_SHARED. - FUTEX_PRIVATE is always supported, and the implementation can internally - use FUTEX_SHARED when FUTEX_PRIVATE is requested. FUTEX_SHARED is not - necessarily supported (use futex_supports_pshared to detect this). - - We expect callers to only use these operations if futexes and the - specific futex operations being used are supported (e.g., FUTEX_SHARED). Given that waking other threads waiting on a futex involves concurrent accesses to the futex word, you must use atomic operations to access the @@ -95,20 +89,6 @@ futex_fatal_error (void) We expect a Linux kernel version of 2.6.22 or more recent (since this version, EINTR is not returned on spurious wake-ups anymore). */ -/* Returns EINVAL if PSHARED is neither PTHREAD_PROCESS_PRIVATE nor - PTHREAD_PROCESS_SHARED; otherwise, returns 0 if PSHARED is supported, and - ENOTSUP if not. */ -static __always_inline int -futex_supports_pshared (int pshared) -{ - if (__glibc_likely (pshared == PTHREAD_PROCESS_PRIVATE)) - return 0; - else if (pshared == PTHREAD_PROCESS_SHARED) - return 0; - else - return EINVAL; -} - /* Atomically wrt other futex operations on the same futex, this blocks iff the value *FUTEX_WORD matches the expected value. This is semantically equivalent to: |