lib/replace/system/threads.h

   1 #ifndef _system_threads_h
   2 #define _system_threads_h
   3 /*
   4    Unix SMB/CIFS implementation.
   5
   6    macros to go along with the lib/replace/ portability layer code
   7
   8    Copyright (C) Volker Lendecke 2012
   9
  10      ** NOTE! The following LGPL license applies to the replace
  11      ** library. This does NOT imply that all of Samba is released
  12      ** under the LGPL
  13
  14    This library is free software; you can redistribute it and/or
  15    modify it under the terms of the GNU Lesser General Public
  16    License as published by the Free Software Foundation; either
  17    version 3 of the License, or (at your option) any later version.
  18
  19    This library is distributed in the hope that it will be useful,
  20    but WITHOUT ANY WARRANTY; without even the implied warranty of
  21    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  22    Lesser General Public License for more details.
  23
  24    You should have received a copy of the GNU Lesser General Public
  25    License along with this library; if not, see <http://www.gnu.org/licenses/>.
  26 */
  27
  28 #include <pthread.h>
  29
  30 #if defined(HAVE_PTHREAD_MUTEXATTR_SETROBUST_NP) && \
  31         !defined(HAVE_PTHREAD_MUTEXATTR_SETROBUST)
  32 #define pthread_mutexattr_setrobust pthread_mutexattr_setrobust_np
  33 #endif
  34
  35 #if defined(HAVE_DECL_PTHREAD_MUTEX_ROBUST_NP) && \
  36         !defined(HAVE_DECL_PTHREAD_MUTEX_ROBUST)
  37 #define PTHREAD_MUTEX_ROBUST PTHREAD_MUTEX_ROBUST_NP
  38 #endif
  39
  40 #if defined(HAVE_PTHREAD_MUTEX_CONSISTENT_NP) && \
  41         !defined(HAVE_PTHREAD_MUTEX_CONSISTENT)
  42 #define pthread_mutex_consistent pthread_mutex_consistent_np
  43 #endif
  44
  45 #ifdef HAVE_STDATOMIC_H
  46 #include <stdatomic.h>
  47 #endif
  48
  49 #ifndef HAVE_ATOMIC_THREAD_FENCE
  50 #ifdef HAVE___ATOMIC_THREAD_FENCE
  51 #define atomic_thread_fence(__ignore_order) __atomic_thread_fence(__ATOMIC_SEQ_CST)
  52 #define HAVE_ATOMIC_THREAD_FENCE 1
  53 #endif /* HAVE___ATOMIC_THREAD_FENCE */
  54 #endif /* not HAVE_ATOMIC_THREAD_FENCE */
  55
  56 #ifndef HAVE_ATOMIC_THREAD_FENCE
  57 #ifdef HAVE___SYNC_SYNCHRONIZE
  58 #define atomic_thread_fence(__ignore_order) __sync_synchronize()
  59 #define HAVE_ATOMIC_THREAD_FENCE 1
  60 #endif /* HAVE___SYNC_SYNCHRONIZE */
  61 #endif /* not HAVE_ATOMIC_THREAD_FENCE */
  62
  63 #ifndef HAVE_ATOMIC_THREAD_FENCE
  64 #ifdef HAVE_ATOMIC_THREAD_FENCE_SUPPORT
  65 #error mismatch_error_between_configure_test_and_header
  66 #endif
  67 /* make sure the build fails if someone uses it without checking the define */
  68 #define atomic_thread_fence(__order) \
  69         __function__atomic_thread_fence_not_available_on_this_platform__()
  70 #endif /* not HAVE_ATOMIC_THREAD_FENCE */
  71
  72 #endif