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https://github.com/RGBCube/serenity
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Kernel: Use RefPtr instead of LockRefPtr for Custody
By protecting all the RefPtr<Custody> objects that may be accessed from multiple threads at the same time (with spinlocks), we remove the need for using LockRefPtr<Custody> (which is basically a RefPtr with a built-in spinlock.)
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parent
5331d243c6
commit
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23 changed files with 143 additions and 102 deletions
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@ -8,22 +8,22 @@
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#include <AK/Error.h>
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#include <AK/IntrusiveList.h>
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#include <AK/RefPtr.h>
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#include <Kernel/Forward.h>
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#include <Kernel/KString.h>
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#include <Kernel/Library/ListedRefCounted.h>
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#include <Kernel/Library/LockRefPtr.h>
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#include <Kernel/Locking/SpinlockProtected.h>
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namespace Kernel {
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class Custody : public ListedRefCounted<Custody, LockType::Spinlock> {
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class Custody final : public ListedRefCounted<Custody, LockType::Spinlock> {
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public:
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static ErrorOr<NonnullLockRefPtr<Custody>> try_create(Custody* parent, StringView name, Inode&, int mount_flags);
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static ErrorOr<NonnullRefPtr<Custody>> try_create(Custody* parent, StringView name, Inode&, int mount_flags);
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~Custody();
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Custody* parent() { return m_parent.ptr(); }
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Custody const* parent() const { return m_parent.ptr(); }
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RefPtr<Custody> parent() { return m_parent; }
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RefPtr<Custody const> parent() const { return m_parent; }
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Inode& inode() { return *m_inode; }
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Inode const& inode() const { return *m_inode; }
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StringView name() const { return m_name->view(); }
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@ -35,7 +35,7 @@ public:
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private:
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Custody(Custody* parent, NonnullOwnPtr<KString> name, Inode&, int mount_flags);
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LockRefPtr<Custody> m_parent;
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RefPtr<Custody> m_parent;
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NonnullOwnPtr<KString> m_name;
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NonnullLockRefPtr<Inode> m_inode;
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int m_mount_flags { 0 };
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