Bananymous
/
banan-os
1
1
Fork 1
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Kernel: Implement SharedMemoryObject cloning

This commit is contained in:
Bananymous 2024-06-03 03:41:00 +03:00
parent 939cbf46e4
commit bd1290706a
2 changed files with 9 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
kernel/include/kernel/Memory/SharedMemoryObject.h
View File

@ -32,6 +32,7 @@ namespace Kernel
{
~Object();
Key key;
size_t size;
PageTable::flags_t flags;
BAN::Vector<paddr_t> paddrs;
@ -54,7 +55,7 @@ namespace Kernel
public:
static BAN::ErrorOr<BAN::UniqPtr<SharedMemoryObject>> create(BAN::RefPtr<SharedMemoryObjectManager::Object>, PageTable&, AddressRange);
virtual BAN::ErrorOr<BAN::UniqPtr<MemoryRegion>> clone(PageTable& new_page_table) override { return BAN::Error::from_errno(ENOTSUP); }
virtual BAN::ErrorOr<BAN::UniqPtr<MemoryRegion>> clone(PageTable& new_page_table) override;
virtual BAN::ErrorOr<void> msync(vaddr_t, size_t, int) override { return {}; }
protected:

7
kernel/kernel/Memory/SharedMemoryObject.cpp
View File

@ -45,6 +45,7 @@ namespace Kernel
Key key = generate_key();
while (m_objects.contains(key))
key = generate_key();
object->key = key;
TRY(m_objects.insert(key, object));
return key;
@ -80,6 +81,12 @@ namespace Kernel
return BAN::move(smo);
}
BAN::ErrorOr<BAN::UniqPtr<MemoryRegion>> SharedMemoryObject::clone(PageTable& new_page_table)
{
auto region = TRY(SharedMemoryObjectManager::get().map_object(m_object->key, new_page_table, { .start = vaddr(), .end = vaddr() + size() }));
return BAN::UniqPtr<MemoryRegion>(BAN::move(region));
}
BAN::ErrorOr<bool> SharedMemoryObject::allocate_page_containing_impl(vaddr_t address)
{
ASSERT(contains(address));