mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 21:42:43 +00:00
f820917a76
This commit converts naked `new`s to `AK::try_make` and `AK::try_create` wherever possible. If the called constructor is private, this can not be done, so we instead now use the standard-defined and compiler-agnostic `new (nothrow)`.
25 lines
987 B
C++
25 lines
987 B
C++
/*
|
|
* Copyright (c) 2021, the SerenityOS developers.
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <Kernel/VM/ScatterGatherList.h>
|
|
|
|
namespace Kernel {
|
|
|
|
RefPtr<ScatterGatherList> ScatterGatherList::create(AsyncBlockDeviceRequest& request, NonnullRefPtrVector<PhysicalPage> allocated_pages, size_t device_block_size)
|
|
{
|
|
auto vm_object = AnonymousVMObject::create_with_physical_pages(allocated_pages);
|
|
if (!vm_object)
|
|
return {};
|
|
return adopt_ref_if_nonnull(new (nothrow) ScatterGatherList(vm_object.release_nonnull(), request, device_block_size));
|
|
}
|
|
|
|
ScatterGatherList::ScatterGatherList(NonnullRefPtr<AnonymousVMObject> vm_object, AsyncBlockDeviceRequest& request, size_t device_block_size)
|
|
: m_vm_object(move(vm_object))
|
|
{
|
|
m_dma_region = MM.allocate_kernel_region_with_vmobject(m_vm_object, page_round_up((request.block_count() * device_block_size)), "AHCI Scattered DMA", Region::Access::Read | Region::Access::Write, Region::Cacheable::Yes);
|
|
}
|
|
|
|
}
|