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Kernel+Userland: Remove global futexes

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We only ever use private futexes, so it doesn't make sense to carry
around all the complexity required for global (cross-process) futexes.
This commit is contained in:
Andreas Kling 2021-08-16 23:29:25 +02:00
parent 7979b5a8bb
commit 4226b662cd
8 changed files with 48 additions and 188 deletions
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7
Kernel/Memory/VMObject.cpp
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@ -31,13 +31,6 @@ VMObject::VMObject(size_t size)
VMObject::~VMObject()
{
{
ScopedSpinLock lock(m_on_deleted_lock);
for (auto& it : m_on_deleted)
it->vmobject_deleted(*this);
m_on_deleted.clear();
}
VERIFY(m_regions.is_empty());
}

23
Kernel/Memory/VMObject.h
View file

@ -7,11 +7,8 @@
#pragma once
#include <AK/FixedArray.h>
#include <AK/HashTable.h>
#include <AK/IntrusiveList.h>
#include <AK/RefCounted.h>
#include <AK/RefPtr.h>
#include <AK/Vector.h>
#include <AK/Weakable.h>
#include <Kernel/Forward.h>
#include <Kernel/Library/ListedRefCounted.h>
@ -20,12 +17,6 @@
namespace Kernel::Memory {
class VMObjectDeletedHandler {
public:
virtual ~VMObjectDeletedHandler() = default;
virtual void vmobject_deleted(VMObject&) = 0;
};
class VMObject
: public ListedRefCounted<VMObject>
, public Weakable<VMObject> {
@ -63,17 +54,6 @@ public:
m_regions.remove(region);
}
void register_on_deleted_handler(VMObjectDeletedHandler& handler)
{
ScopedSpinLock locker(m_on_deleted_lock);
m_on_deleted.set(&handler);
}
void unregister_on_deleted_handler(VMObjectDeletedHandler& handler)
{
ScopedSpinLock locker(m_on_deleted_lock);
m_on_deleted.remove(&handler);
}
protected:
explicit VMObject(size_t);
explicit VMObject(VMObject const&);
@ -91,9 +71,6 @@ private:
VMObject& operator=(VMObject&&) = delete;
VMObject(VMObject&&) = delete;
HashTable<VMObjectDeletedHandler*> m_on_deleted;
SpinLock<u8> m_on_deleted_lock;
Region::ListInVMObject m_regions;
public: