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ojph_mem.cpp
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//***************************************************************************/
// This software is released under the 2-Clause BSD license, included
// below.
//
// Copyright (c) 2019, Aous Naman
// Copyright (c) 2019, Kakadu Software Pty Ltd, Australia
// Copyright (c) 2019, The University of New South Wales, Australia
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//***************************************************************************/
// This file is part of the OpenJPH software implementation.
// File: ojph_mem.cpp
// Author: Aous Naman
// Date: 28 August 2019
//***************************************************************************/
#include <new>
#include "ojph_mem.h"
namespace ojph {
//
//
//
//
//
template<>
void line_buf::wrap(si32 *buffer, size_t num_ele, ui32 pre_size)
{
this->i32 = buffer;
this->size = num_ele;
this->pre_size = pre_size;
this->flags = LFT_32BIT | LFT_INTEGER;
}
template<>
void line_buf::wrap(float *buffer, size_t num_ele, ui32 pre_size)
{
this->f32 = buffer;
this->size = num_ele;
this->pre_size = pre_size;
this->flags = LFT_32BIT;
}
template<>
void line_buf::wrap(si64 *buffer, size_t num_ele, ui32 pre_size)
{
this->i64 = buffer;
this->size = num_ele;
this->pre_size = pre_size;
this->flags = LFT_64BIT | LFT_INTEGER;
}
//
//
//
//
//
mem_elastic_allocator::stores_list*
mem_elastic_allocator::allocate(mem_elastic_allocator::stores_list** list,
ui32 extended_bytes)
{
ui32 bytes = ojph_max(extended_bytes, chunk_size);
if (avail != NULL && avail->orig_size >= bytes)
{
*list = avail;
avail = avail->next_store;
(*list)->restart();
return *list;
}
else
{
ui32 store_bytes = stores_list::eval_store_bytes(bytes);
*list = (stores_list*) malloc(store_bytes);
total_allocated += store_bytes;
return new (*list) stores_list(bytes);
}
}
void mem_elastic_allocator::get_buffer(ui32 needed_bytes, coded_lists* &p)
{
ui32 extended_bytes = needed_bytes + (ui32)sizeof(coded_lists);
if (store == NULL)
cur_store = store = allocate(&store, extended_bytes);
else if (cur_store->available < extended_bytes)
cur_store = allocate(&cur_store->next_store, extended_bytes);
p = new (cur_store->data) coded_lists(needed_bytes);
assert(cur_store->available >= extended_bytes);
cur_store->available -= extended_bytes;
cur_store->data += extended_bytes;
}
void mem_elastic_allocator::restart()
{
// move to the end of avail
stores_list** p = &avail;
while (*p != NULL)
p = &((*p)->next_store);
*p = store;
cur_store = store = NULL;
}
}
ojph::line_buf::i64
si64 * i64
Definition ojph_mem.h:185
ojph::line_buf::size
size_t size
Definition ojph_mem.h:180
ojph::line_buf::flags
ui32 flags
Definition ojph_mem.h:182
ojph::line_buf::LFT_INTEGER
@ LFT_INTEGER
Definition ojph_mem.h:169
ojph::line_buf::LFT_32BIT
@ LFT_32BIT
Definition ojph_mem.h:167
ojph::line_buf::LFT_64BIT
@ LFT_64BIT
Definition ojph_mem.h:168
ojph::line_buf::f32
float * f32
Definition ojph_mem.h:186
ojph::line_buf::pre_size
ui32 pre_size
Definition ojph_mem.h:181
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:184
ojph::mem_elastic_allocator::chunk_size
const ui32 chunk_size
Definition ojph_mem.h:274
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:270
ojph::mem_elastic_allocator::restart
void restart()
Definition ojph_mem.cpp:130
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:272
ojph::mem_elastic_allocator::cur_store
stores_list * cur_store
Definition ojph_mem.h:271
ojph::mem_elastic_allocator::total_allocated
size_t total_allocated
Definition ojph_mem.h:273
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:201
ojph::mem_elastic_allocator::stores_list
Definition ojph_mem.h:246
ojph::mem_elastic_allocator::stores_list::eval_store_bytes
static ui32 eval_store_bytes(ui32 available_bytes)
Definition ojph_mem.h:259