/* Copyright (C) 2008-2016 Free Software Foundation, Inc. Contributed by Richard Henderson <rth@redhat.com>. This file is part of the GNU Transactional Memory Library (libitm). Libitm is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Libitm 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 General Public License for more details. Under Section 7 of GPL version 3, you are granted additional permissions described in the GCC Runtime Library Exception, version 3.1, as published by the Free Software Foundation. You should have received a copy of the GNU General Public License and a copy of the GCC Runtime Library Exception along with this program; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see <http://www.gnu.org/licenses/>. */ /* The following are internal implementation functions and definitions. To distinguish them from those defined by the Intel ABI, they all begin with GTM/gtm. */ #ifndef COMMON_H #define COMMON_H 1 #define UNUSED __attribute__((unused)) #define ALWAYS_INLINE __attribute__((always_inline)) #ifdef HAVE_ATTRIBUTE_VISIBILITY # define HIDDEN __attribute__((visibility("hidden"))) #else # define HIDDEN #endif #define likely(X) __builtin_expect((X) != 0, 1) #define unlikely(X) __builtin_expect((X), 0) namespace GTM HIDDEN { // Locally defined protected allocation functions. // // To avoid dependency on libstdc++ new/delete, as well as to not // interfere with the wrapping of the global new/delete we wrap for // the user in alloc_cpp.cc, use class-local versions that defer // to malloc/free. Recall that operator new/delete does not go through // normal lookup and so we cannot simply inject a version into the // GTM namespace. // If separate_cl is true, the allocator will try to return memory that is on // cache lines that are not shared with any object used by another thread. extern void * xmalloc (size_t s, bool separate_cl = false) __attribute__((malloc, nothrow)); extern void * xcalloc (size_t s, bool separate_cl = false) __attribute__((malloc, nothrow)); extern void * xrealloc (void *p, size_t s, bool separate_cl = false) __attribute__((malloc, nothrow)); } // namespace GTM #endif // COMMON_H