nptl/pthread_mutexattr_settype.c

   1 /* Copyright (C) 2002-2023 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <pthreadP.h>
  20 #include <shlib-compat.h>
  21
  22 int
  23 ___pthread_mutexattr_settype (pthread_mutexattr_t *attr, int kind)
  24 {
  25   struct pthread_mutexattr *iattr;
  26
  27   if (kind < PTHREAD_MUTEX_NORMAL || kind > PTHREAD_MUTEX_ADAPTIVE_NP)
  28     return EINVAL;
  29
  30   /* Cannot distinguish between DEFAULT and NORMAL. So any settype
  31      call disables elision for now.  */
  32   if (kind == PTHREAD_MUTEX_NORMAL)
  33     kind |= PTHREAD_MUTEX_NO_ELISION_NP;
  34
  35   iattr = (struct pthread_mutexattr *) attr;
  36
  37   iattr->mutexkind = (iattr->mutexkind & PTHREAD_MUTEXATTR_FLAG_BITS) | kind;
  38
  39   return 0;
  40 }
  41 versioned_symbol (libc, ___pthread_mutexattr_settype,
  42                   pthread_mutexattr_settype, GLIBC_2_34);
  43 libc_hidden_ver (___pthread_mutexattr_settype, __pthread_mutexattr_settype)
  44 #ifndef SHARED
  45 strong_alias (___pthread_mutexattr_settype, __pthread_mutexattr_settype)
  46 #endif
  47
  48 #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_34)
  49 compat_symbol (libpthread, ___pthread_mutexattr_settype,
  50                pthread_mutexattr_setkind_np, GLIBC_2_0);
  51 compat_symbol (libpthread, ___pthread_mutexattr_settype,
  52                __pthread_mutexattr_settype, GLIBC_2_0);
  53 #endif
  54
  55 #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_1, GLIBC_2_34)
  56 compat_symbol (libpthread, ___pthread_mutexattr_settype,
  57                pthread_mutexattr_settype, GLIBC_2_1);
  58 #endif