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1 /* Copyright (C) 2008-2017 Free Software Foundation, Inc.
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2 Contributed by Richard Henderson <rth@redhat.com>.
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3
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4 This file is part of the GNU Transactional Memory Library (libitm).
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5
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6 Libitm is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3 of the License, or
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9 (at your option) any later version.
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10
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11 Libitm is distributed in the hope that it will be useful, but WITHOUT ANY
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12 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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13 FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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14 more details.
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15
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16 Under Section 7 of GPL version 3, you are granted additional
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17 permissions described in the GCC Runtime Library Exception, version
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18 3.1, as published by the Free Software Foundation.
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19
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20 You should have received a copy of the GNU General Public License and
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21 a copy of the GCC Runtime Library Exception along with this program;
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22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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23 <http://www.gnu.org/licenses/>. */
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24
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25 #include "libitm_i.h"
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26
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27 namespace GTM HIDDEN {
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28
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29 void
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30 gtm_thread::rollback_user_actions(size_t until_size)
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31 {
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32 for (size_t s = user_actions.size(); s > until_size; s--)
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33 {
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34 user_action *a = user_actions.pop();
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35 if (!a->on_commit)
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36 a->fn (a->arg);
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37 }
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38 }
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39
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40
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41 void
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42 gtm_thread::commit_user_actions()
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43 {
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44 for (vector<user_action>::iterator i = user_actions.begin(),
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45 ie = user_actions.end(); i != ie; i++)
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46 {
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47 if (i->on_commit)
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48 i->fn (i->arg);
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49 }
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50 user_actions.clear();
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51 }
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52
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53 } // namespace GTM
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54
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55 using namespace GTM;
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56
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57 void ITM_REGPARM
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58 _ITM_addUserCommitAction(_ITM_userCommitFunction fn,
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59 _ITM_transactionId_t tid, void *arg)
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60 {
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61 gtm_thread *tx = gtm_thr();
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62 if (tid != _ITM_noTransactionId)
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63 GTM_fatal("resumingTransactionId in _ITM_addUserCommitAction must be "
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64 "_ITM_noTransactionId");
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65 gtm_thread::user_action *a = tx->user_actions.push();
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66 a->fn = fn;
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67 a->arg = arg;
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68 a->on_commit = true;
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69 a->resuming_id = tid;
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70 }
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71
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72
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73 void ITM_REGPARM
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74 _ITM_addUserUndoAction(_ITM_userUndoFunction fn, void * arg)
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75 {
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76 gtm_thread *tx = gtm_thr();
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77 gtm_thread::user_action *a = tx->user_actions.push();
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78 a->fn = fn;
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79 a->arg = arg;
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80 a->on_commit = false;
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81 }
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