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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include "datasnapshot.h" | |
22 | ||
23 | #include <assert.h> | |
24 | #include <stdlib.h> | |
25 | #include <string.h> | |
26 | ||
27 | using namespace boost; | |
28 | ||
29 | namespace pv { | |
30 | ||
31 | DataSnapshot::DataSnapshot(int unit_size) : | |
32 | _data(NULL), | |
33 | _sample_count(0), | |
34 | _unit_size(unit_size) | |
35 | { | |
36 | lock_guard<recursive_mutex> lock(_mutex); | |
37 | assert(_unit_size > 0); | |
38 | } | |
39 | ||
40 | DataSnapshot::~DataSnapshot() | |
41 | { | |
42 | lock_guard<recursive_mutex> lock(_mutex); | |
43 | free(_data); | |
44 | } | |
45 | ||
46 | uint64_t DataSnapshot::get_sample_count() | |
47 | { | |
48 | lock_guard<recursive_mutex> lock(_mutex); | |
49 | return _sample_count; | |
50 | } | |
51 | ||
52 | void DataSnapshot::append_data(void *data, uint64_t samples) | |
53 | { | |
54 | lock_guard<recursive_mutex> lock(_mutex); | |
55 | _data = realloc(_data, (_sample_count + samples) * _unit_size); | |
56 | memcpy((uint8_t*)_data + _sample_count * _unit_size, | |
57 | data, samples * _unit_size); | |
58 | _sample_count += samples; | |
59 | } | |
60 | ||
61 | } // namespace pv |