From 6e411b42f8c76081cf3ce8b15df10d4d3189e465 Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Sun, 13 Dec 2020 11:06:27 +0000 Subject: htl: Add futex-internal.h That provides futex_supports_pshared --- sysdeps/htl/futex-internal.h | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 sysdeps/htl/futex-internal.h diff --git a/sysdeps/htl/futex-internal.h b/sysdeps/htl/futex-internal.h new file mode 100644 index 0000000000..2b7a13aff0 --- /dev/null +++ b/sysdeps/htl/futex-internal.h @@ -0,0 +1,39 @@ +/* futex operations for glibc-internal use. Stub version; do not include + this file directly. + Copyright (C) 2014-2020 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 + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#ifndef STUB_FUTEX_INTERNAL_H +#define STUB_FUTEX_INTERNAL_H + +#include + +/* 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; +} + +#endif /* futex-internal.h */ -- cgit 1.4.1