Function sys_mempool_create

ps3fw/sys_mempool.cpp:31–115

};

error_code sys_mempool_create(ppu_thread& ppu, vm::ptr<sys_mempool_t> mempool,
	vm::ptr<void> chunk, const u64 chunk_size,
	const u64 block_size, const u64 ralignment)
{
	sysPrxForUser.warning("sys_mempool_create(mempool=*0x%x, chunk=*0x%x, "
						  "chunk_size=%d, block_size=%d, ralignment=%d)",
		mempool, chunk, chunk_size, block_size, ralignment);

	if (block_size > chunk_size)
	{
		return CELL_EINVAL;
	}

	u64 alignment = ralignment;
	if (ralignment == 0 || ralignment == 2)
	{
		alignment = 4;
	}

	// Check if alignment is power of two
	if ((alignment & (alignment - 1)) != 0)
	{
		return CELL_EINVAL;
	}

	// Test chunk address aligment
	if (!chunk.aligned(8))
	{
		return CELL_EINVAL;
	}

	auto id = idm::make<memory_pool_t>();
	*mempool = id;

	auto memory_pool = idm::get_unlocked<memory_pool_t>(id);

	memory_pool->chunk = chunk;
	memory_pool->chunk_size = chunk_size;
	memory_pool->block_size = block_size;
	memory_pool->ralignment = alignment;

	// TODO: check blocks alignment wrt ralignment
	u64 num_blocks = chunk_size / block_size;
	memory_pool->free_blocks.resize(num_blocks);
	for (u32 i = 0; i < num_blocks; ++i)
	{
		memory_pool->free_blocks[i] =
			vm::ptr<void>::make(chunk.addr() + i * static_cast<u32>(block_size));
	}

	// Create synchronization variables
	vm::var<u32> mutexid;
	vm::var<sys_mutex_attribute_t> attr;
	attr->protocol = SYS_SYNC_PRIORITY;
	attr->recursive = SYS_SYNC_NOT_RECURSIVE;
	attr->pshared = SYS_SYNC_NOT_PROCESS_SHARED;
	attr->adaptive = SYS_SYNC_NOT_ADAPTIVE;
	attr->ipc_key = 0; // No idea what this is