Revision control
++ // Copyright (C) 2021 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++ // Qt-Security score:significant reason:default
++
++
++ #include "glslmemorypool_p.h"
++ #include <cstring>
++ #include <cassert>
++ #include <cstdlib>
++
++ QT_BEGIN_NAMESPACE
++
++ using namespace GLSL;
++
++ MemoryPool::MemoryPool()
++ : _blocks(nullptr),
++ _allocatedBlocks(0),
++ _blockCount(-1),
++ _ptr(nullptr),
++ _end(nullptr)
++ { }
++
++ MemoryPool::~MemoryPool()
++ {
++ if (_blocks) {
++ for (int i = 0; i < _allocatedBlocks; ++i) {
++ if (char *b = _blocks[i])
++ std::free(b);
++ }
++
++ std::free(_blocks);
++ }
++ }
++
++ void MemoryPool::reset()
++ {
++ _blockCount = -1;
++ _ptr = _end = nullptr;
++ }
++
++ void *MemoryPool::allocate_helper(size_t size)
++ {
++ assert(size < BLOCK_SIZE);
++
++ if (++_blockCount == _allocatedBlocks) {
++ if (! _allocatedBlocks)
++ _allocatedBlocks = DEFAULT_BLOCK_COUNT;
++ else
++ _allocatedBlocks *= 2;
++
++ _blocks = (char **) realloc(_blocks, sizeof(char *) * _allocatedBlocks);
++
++ for (int index = _blockCount; index < _allocatedBlocks; ++index)
++ _blocks[index] = nullptr;
++ }
++
++ char *&block = _blocks[_blockCount];
++
++ if (! block)
++ block = (char *) std::malloc(BLOCK_SIZE);
++
++ _ptr = block;
++ _end = _ptr + BLOCK_SIZE;
++
++ void *addr = _ptr;
++ _ptr += size;
++ return addr;
++ }
++
++ Managed::Managed()
++ { }
++
++ Managed::~Managed()
++ { }
++
++ void *Managed::operator new(size_t size, MemoryPool *pool)
++ { return pool->allocate(size); }
++
++ void Managed::operator delete(void *)
++ { }
++
++ void Managed::operator delete(void *, MemoryPool *)
++ { }
++
++ QT_END_NAMESPACE