66 lines
2.5 KiB
C++
66 lines
2.5 KiB
C++
/* Copyright (C) 2008-2015 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
|