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1 /* Copyright (C) 2009-2020 Free Software Foundation, Inc.
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111
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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
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28 using namespace GTM;
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29
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30 extern "C" {
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31
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32 /* Wrap: malloc (size_t sz) */
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33 void *
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34 _ITM_malloc (size_t sz)
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35 {
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36 void *r = malloc (sz);
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37 if (r)
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38 gtm_thr()->record_allocation (r, free);
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39 return r;
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40 }
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41
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42 /* Wrap: calloc (size_t nm, size_t sz) */
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43 void *
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44 _ITM_calloc (size_t nm, size_t sz)
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45 {
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46 void *r = calloc (nm, sz);
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47 if (r)
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48 gtm_thr()->record_allocation (r, free);
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49 return r;
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50 }
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51
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52 /* Wrap: free (void *ptr) */
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53 void
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54 _ITM_free (void *ptr)
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55 {
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56 if (ptr)
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57 gtm_thr()->forget_allocation (ptr, free);
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58 }
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59
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60 /* Forget any internal references to PTR. */
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61
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62 __attribute__((transaction_pure))
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63 void ITM_REGPARM
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64 _ITM_dropReferences (void *ptr, size_t len)
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65 {
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66 // The semantics of _ITM_dropReferences are not sufficiently defined in the
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67 // ABI specification, so it does not make sense to support it right now. See
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68 // the libitm documentation for details.
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69 GTM_fatal("_ITM_dropReferences is not supported");
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70 }
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71
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72 } // extern "C"
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