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818ab71a | 1 | /* Copyright (C) 2008-2016 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 | #include "libitm_i.h" | |
26 | ||
27 | using namespace GTM; | |
28 | ||
29 | int ITM_REGPARM | |
30 | _ITM_versionCompatible (int version) | |
31 | { | |
32 | return version == _ITM_VERSION_NO; | |
33 | } | |
34 | ||
35 | ||
36 | const char * ITM_REGPARM | |
37 | _ITM_libraryVersion (void) | |
38 | { | |
39 | return "GNU libitm " _ITM_VERSION; | |
40 | } | |
41 | ||
42 | ||
43 | _ITM_howExecuting ITM_REGPARM | |
44 | _ITM_inTransaction (void) | |
45 | { | |
480c696b TR |
46 | #if defined(USE_HTM_FASTPATH) |
47 | // If we use the HTM fastpath, we cannot reliably detect whether we are | |
48 | // in a transaction because this function can be called outside of | |
49 | // a transaction and thus we can't deduce this by looking at just the serial | |
50 | // lock. This function isn't used in practice currently, so the easiest | |
51 | // way to handle it is to just abort. | |
52 | if (htm_fastpath && htm_transaction_active()) | |
53 | htm_abort(); | |
54 | #endif | |
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55 | struct gtm_thread *tx = gtm_thr(); |
56 | if (tx && (tx->nesting > 0)) | |
57 | { | |
58 | if (tx->state & gtm_thread::STATE_IRREVOCABLE) | |
59 | return inIrrevocableTransaction; | |
60 | else | |
61 | return inRetryableTransaction; | |
62 | } | |
63 | return outsideTransaction; | |
64 | } | |
65 | ||
66 | ||
67 | _ITM_transactionId_t ITM_REGPARM | |
68 | _ITM_getTransactionId (void) | |
69 | { | |
480c696b TR |
70 | #if defined(USE_HTM_FASTPATH) |
71 | // See ITM_inTransaction. | |
72 | if (htm_fastpath && htm_transaction_active()) | |
73 | htm_abort(); | |
74 | #endif | |
0a35513e AH |
75 | struct gtm_thread *tx = gtm_thr(); |
76 | return (tx && (tx->nesting > 0)) ? tx->id : _ITM_noTransactionId; | |
77 | } | |
78 | ||
79 | ||
80 | void ITM_REGPARM ITM_NORETURN | |
81 | _ITM_error (const _ITM_srcLocation * loc UNUSED, int errorCode UNUSED) | |
82 | { | |
83 | abort (); | |
84 | } |