void memory_sub_session::deallocate(byte* p, size_t bytes)
{
if (is_small_alloc(p))
{
// removing chunk
remove_small_alloc(p);
std::pair<byte*, std::pair<size_t, int> > chunk_alloc = free_small_chunk_alloc(p);
std::pair<byte*, size_t> remainder = add_merge_remove_free_small_chunk(p, bytes);
if (chunk_alloc.second.first == remainder.second)
{
if (munmap(chunk_alloc.first, chunk_alloc.second.first))
LOG(WARN, "unmap error\n");
remove_alloc(chunk_alloc.first);
}
else
{
add_free_small_chunk(remainder.first, remainder.second);
}
}
else
{
if (munmap(reinterpret_cast<void*> (p), bytes))
LOG(WARN, "unmap error\n");
remove_alloc(p);
}
}
static void __free(void *vaddr, bool unmap)
{
struct alloc *node = find_alloc((unsigned long)vaddr);
if (!node)
return;
#ifndef CONFIG_UML
if (unmap)
/*
* We need the double cast because otherwise gcc complains about
* cast to pointer of different size. This is technically a down
* cast but if unmap is being called, this had better be an
* actual 32-bit pointer anyway.
*/
iounmap((void *)(unsigned long)node->vaddr);
#endif
gen_pool_free(node->mpool->gpool, node->paddr, node->len);
node->mpool->free += node->len;
remove_alloc(node);
kfree(node);
}
static void __free(void *vaddr, bool unmap)
{
struct alloc *node = find_alloc(vaddr);
if (!node)
return;
if (unmap)
iounmap(node->vaddr);
gen_pool_free(node->mpool->gpool, node->paddr, node->len);
node->mpool->free += node->len;
remove_alloc(node);
kfree(node);
}
