1 /*--------------------------------------------------------------------*/
2 /*--- Callgrind ---*/
3 /*--- ct_costs.c ---*/
4 /*--------------------------------------------------------------------*/
5
6 /*
7 This file is part of Callgrind, a Valgrind tool for call tracing.
8
9 Copyright (C) 2002-2017, Josef Weidendorfer (Josef.Weidendorfer@gmx.de)
10
11 This program is free software; you can redistribute it and/or
12 modify it under the terms of the GNU General Public License as
13 published by the Free Software Foundation; either version 2 of the
14 License, or (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
24 02111-1307, USA.
25
26 The GNU General Public License is contained in the file COPYING.
27 */
28
29 #include "global.h"
30
31 #include "pub_tool_mallocfree.h"
32
33 #define COSTCHUNK_SIZE 100000
34
35 UInt CLG_(costarray_entries) = 0;
36 UInt CLG_(costarray_chunks) = 0;
37 static CostChunk* cost_chunk_base = 0;
38 static CostChunk* cost_chunk_current = 0;
39
CLG_(get_costarray)40 ULong* CLG_(get_costarray)(Int size)
41 {
42 ULong* ptr;
43
44 if (!cost_chunk_current ||
45 (cost_chunk_current->size - cost_chunk_current->used < size)) {
46 CostChunk* cc = (CostChunk*) CLG_MALLOC("cl.costs.gc.1",
47 sizeof(CostChunk) +
48 COSTCHUNK_SIZE * sizeof(ULong));
49 CLG_ASSERT(size < COSTCHUNK_SIZE);
50
51 cc->size = COSTCHUNK_SIZE;
52 cc->used = 0;
53 cc->next = 0;
54
55 if (cost_chunk_current)
56 cost_chunk_current->next = cc;
57 cost_chunk_current = cc;
58
59 if (!cost_chunk_base) cost_chunk_base = cc;
60
61 CLG_(costarray_chunks)++;
62 }
63
64 ptr = &(cost_chunk_current->data[cost_chunk_current->used]);
65 cost_chunk_current->used += size;
66
67 CLG_(costarray_entries) += size;
68
69 return ptr;
70 }
71