66 lines
2.5 KiB
C++
66 lines
2.5 KiB
C++
/* Copyright (C) 2008-2021 Free Software Foundation, Inc.
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Contributed by Richard Henderson <rth@redhat.com>.
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This file is part of the GNU Transactional Memory Library (libitm).
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Libitm is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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Libitm is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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/* The following are internal implementation functions and definitions.
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To distinguish them from those defined by the Intel ABI, they all
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begin with GTM/gtm. */
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#ifndef COMMON_H
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#define COMMON_H 1
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#define UNUSED __attribute__((unused))
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#define ALWAYS_INLINE __attribute__((always_inline))
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#ifdef HAVE_ATTRIBUTE_VISIBILITY
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# define HIDDEN __attribute__((visibility("hidden")))
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#else
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# define HIDDEN
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#endif
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#define likely(X) __builtin_expect((X) != 0, 1)
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#define unlikely(X) __builtin_expect((X), 0)
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namespace GTM HIDDEN {
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// Locally defined protected allocation functions.
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//
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// To avoid dependency on libstdc++ new/delete, as well as to not
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// interfere with the wrapping of the global new/delete we wrap for
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// the user in alloc_cpp.cc, use class-local versions that defer
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// to malloc/free. Recall that operator new/delete does not go through
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// normal lookup and so we cannot simply inject a version into the
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// GTM namespace.
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// If separate_cl is true, the allocator will try to return memory that is on
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// cache lines that are not shared with any object used by another thread.
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extern void * xmalloc (size_t s, bool separate_cl = false)
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__attribute__((malloc, nothrow));
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extern void * xcalloc (size_t s, bool separate_cl = false)
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__attribute__((malloc, nothrow));
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extern void * xrealloc (void *p, size_t s, bool separate_cl = false)
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__attribute__((malloc, nothrow));
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} // namespace GTM
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#endif // COMMON_H
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