OpenJPH: /build/openjph/src/OpenJPH/src/core/others/ojph_mem.cpp Source File

OpenJPH Open-source implementation of JPEG2000 Part-15

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ojph_mem.cpp
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1//***************************************************************************/
2// This software is released under the 2-Clause BSD license, included
3// below.
4//
5// Copyright (c) 2019, Aous Naman
6// Copyright (c) 2019, Kakadu Software Pty Ltd, Australia
7// Copyright (c) 2019, The University of New South Wales, Australia
8//
9// Redistribution and use in source and binary forms, with or without
10// modification, are permitted provided that the following conditions are
11// met:
12//
13// 1. Redistributions of source code must retain the above copyright
14// notice, this list of conditions and the following disclaimer.
15//
16// 2. Redistributions in binary form must reproduce the above copyright
17// notice, this list of conditions and the following disclaimer in the
18// documentation and/or other materials provided with the distribution.
19//
20// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
21// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
23// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
26// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31//***************************************************************************/
32// This file is part of the OpenJPH software implementation.
33// File: ojph_mem.cpp
34// Author: Aous Naman
35// Date: 28 August 2019
36//***************************************************************************/
37
38
39#include <new>
40#include "ojph_mem.h"
41
42namespace ojph {
43
45 //
46 //
47 //
48 //
49 //
51
53 template<>
54 void line_buf::wrap(si32 *buffer, size_t num_ele, ui32 pre_size)
55 {
56 this->i32 = buffer;
57 this->size = num_ele;
58 this->pre_size = pre_size;
59 this->flags = LFT_32BIT | LFT_INTEGER;
60 }
61
63 template<>
64 void line_buf::wrap(float *buffer, size_t num_ele, ui32 pre_size)
65 {
66 this->f32 = buffer;
67 this->size = num_ele;
68 this->pre_size = pre_size;
69 this->flags = LFT_32BIT;
70 }
71
73 template<>
74 void line_buf::wrap(si64 *buffer, size_t num_ele, ui32 pre_size)
75 {
76 this->i64 = buffer;
77 this->size = num_ele;
78 this->pre_size = pre_size;
79 this->flags = LFT_64BIT | LFT_INTEGER;
80 }
81
83 //
84 //
85 //
86 //
87 //
89
91 mem_elastic_allocator::stores_list*
92 mem_elastic_allocator::allocate(mem_elastic_allocator::stores_list** list,
93 ui32 extended_bytes)
94 {
95 ui32 bytes = ojph_max(extended_bytes, chunk_size);
96 if (avail != NULL && avail->orig_size >= bytes)
97 {
98 *list = avail;
99 avail = avail->next_store;
100 (*list)->restart();
101 return *list;
102 }
103 else
104 {
105 ui32 store_bytes = stores_list::eval_store_bytes(bytes);
106 *list = (stores_list*) malloc(store_bytes);
107 total_allocated += store_bytes;
108 return new (*list) stores_list(bytes);
109 }
110 }
111
113 void mem_elastic_allocator::get_buffer(ui32 needed_bytes, coded_lists* &p)
114 {
115 // Round up so each coded_lists (and coded_lists::buf) stays 16-byte aligned
116 // within the store; avoids alignment fault on 32-bit architectures
117 ui32 raw = needed_bytes + (ui32)sizeof (coded_lists);
118 ui32 extended_bytes = (raw + 15u) & ~15u;
119
120 if (store == NULL)
121 cur_store = store = allocate(&store, extended_bytes);
122 else if (cur_store->available < extended_bytes)
123 cur_store = allocate(&cur_store->next_store, extended_bytes);
124
125 p = new (cur_store->data) coded_lists(needed_bytes);
126
127 assert(cur_store->available >= extended_bytes);
128 cur_store->available -= extended_bytes;
129 cur_store->data += extended_bytes;
130 }
131
133 void mem_elastic_allocator::restart()
134 {
135 // move to the end of avail
136 stores_list** p = &avail;
137 while (*p != NULL)
138 p = &((*p)->next_store);
139 *p = store;
140 cur_store = store = NULL;
141 }
142
143}
ojph::line_buf::LFT_INTEGER
@ LFT_INTEGER
Definition ojph_mem.h:170
ojph::line_buf::LFT_32BIT
@ LFT_32BIT
Definition ojph_mem.h:168
ojph::line_buf::LFT_64BIT
@ LFT_64BIT
Definition ojph_mem.h:169
ojph::line_buf::i64
si64 * i64
Definition ojph_mem.h:186
ojph::line_buf::size
size_t size
Definition ojph_mem.h:181
ojph::line_buf::flags
ui32 flags
Definition ojph_mem.h:183
ojph::line_buf::f32
float * f32
Definition ojph_mem.h:187
ojph::line_buf::pre_size
ui32 pre_size
Definition ojph_mem.h:182
ojph::line_buf::wrap
void wrap(T *buffer, size_t num_ele, ui32 pre_size)
ojph::line_buf::i32
si32 * i32
Definition ojph_mem.h:185
ojph::mem_elastic_allocator::chunk_size
const ui32 chunk_size
Definition ojph_mem.h:283
ojph::mem_elastic_allocator::get_buffer
void get_buffer(ui32 needed_bytes, coded_lists *&p)
Definition ojph_mem.cpp:113
ojph::mem_elastic_allocator::store
stores_list * store
Definition ojph_mem.h:279
ojph::mem_elastic_allocator::restart
void restart()
Definition ojph_mem.cpp:133
ojph::mem_elastic_allocator::allocate
stores_list * allocate(stores_list **list, ui32 extended_bytes)
Definition ojph_mem.cpp:92
ojph::mem_elastic_allocator::avail
stores_list * avail
Definition ojph_mem.h:281
ojph::mem_elastic_allocator::cur_store
stores_list * cur_store
Definition ojph_mem.h:280
ojph::mem_elastic_allocator::total_allocated
size_t total_allocated
Definition ojph_mem.h:282
ojph
Definition ojph_img_io.h:52
ojph::si64
int64_t si64
Definition ojph_defs.h:57
ojph::si32
int32_t si32
Definition ojph_defs.h:55
ojph::ui32
uint32_t ui32
Definition ojph_defs.h:54
ojph_max
#define ojph_max(a, b)
Definition ojph_defs.h:73
ojph_mem.h
ojph::coded_lists
Definition ojph_mem.h:202
ojph::mem_elastic_allocator::stores_list
Definition ojph_mem.h:247
ojph::mem_elastic_allocator::stores_list::eval_store_bytes
static ui32 eval_store_bytes(ui32 available_bytes)
Definition ojph_mem.h:268