Subversion Repositories openrisc

/* Copyright (C) 2008, 2009, 2011 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