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f93608e6 | 1 | /* Copyright (C) 2008-2014 Free Software Foundation, Inc. |
0a35513e AH |
2 | Contributed by Richard Henderson <rth@redhat.com>. |
3 | ||
4 | This file is part of the GNU Transactional Memory Library (libitm). | |
5 | ||
6 | Libitm is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | Libitm is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
13 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | more details. | |
15 | ||
16 | Under Section 7 of GPL version 3, you are granted additional | |
17 | permissions described in the GCC Runtime Library Exception, version | |
18 | 3.1, as published by the Free Software Foundation. | |
19 | ||
20 | You should have received a copy of the GNU General Public License and | |
21 | a copy of the GCC Runtime Library Exception along with this program; | |
22 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | <http://www.gnu.org/licenses/>. */ | |
24 | ||
25 | /* The following are internal implementation functions and definitions. | |
26 | To distinguish them from those defined by the Intel ABI, they all | |
27 | begin with GTM/gtm. */ | |
28 | ||
29 | #ifndef COMMON_H | |
30 | #define COMMON_H 1 | |
31 | ||
32 | #define UNUSED __attribute__((unused)) | |
33 | #define ALWAYS_INLINE __attribute__((always_inline)) | |
34 | #ifdef HAVE_ATTRIBUTE_VISIBILITY | |
35 | # define HIDDEN __attribute__((visibility("hidden"))) | |
36 | #else | |
37 | # define HIDDEN | |
38 | #endif | |
39 | ||
40 | #define likely(X) __builtin_expect((X) != 0, 1) | |
41 | #define unlikely(X) __builtin_expect((X), 0) | |
42 | ||
43 | namespace GTM HIDDEN { | |
44 | ||
45 | // Locally defined protected allocation functions. | |
46 | // | |
47 | // To avoid dependency on libstdc++ new/delete, as well as to not | |
48 | // interfere with the wrapping of the global new/delete we wrap for | |
49 | // the user in alloc_cpp.cc, use class-local versions that defer | |
50 | // to malloc/free. Recall that operator new/delete does not go through | |
51 | // normal lookup and so we cannot simply inject a version into the | |
52 | // GTM namespace. | |
53 | // If separate_cl is true, the allocator will try to return memory that is on | |
54 | // cache lines that are not shared with any object used by another thread. | |
55 | extern void * xmalloc (size_t s, bool separate_cl = false) | |
56 | __attribute__((malloc, nothrow)); | |
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57 | extern void * xcalloc (size_t s, bool separate_cl = false) |
58 | __attribute__((malloc, nothrow)); | |
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59 | extern void * xrealloc (void *p, size_t s, bool separate_cl = false) |
60 | __attribute__((malloc, nothrow)); | |
61 | ||
62 | } // namespace GTM | |
63 | ||
64 | ||
65 | #endif // COMMON_H |