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Kernel: Use RefPtr instead of LockRefPtr for Custody

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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.)
This commit is contained in:
Andreas Kling 2022-08-21 01:04:35 +02:00
parent 5331d243c6
commit 728c3fbd14
23 changed files with 143 additions and 102 deletions
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7
Kernel/FileSystem/OpenFileDescription.h
View file

@ -8,6 +8,7 @@
#include <AK/AtomicRefCounted.h>
#include <AK/Badge.h>
#include <AK/RefPtr.h>
#include <Kernel/FileSystem/FIFO.h>
#include <Kernel/FileSystem/Inode.h>
#include <Kernel/FileSystem/InodeMetadata.h>
@ -88,8 +89,8 @@ public:
Inode* inode() { return m_inode.ptr(); }
Inode const* inode() const { return m_inode.ptr(); }
Custody* custody() { return m_custody.ptr(); }
Custody const* custody() const { return m_custody.ptr(); }
RefPtr<Custody> custody();
RefPtr<Custody const> custody() const;
ErrorOr<Memory::Region*> mmap(Process&, Memory::VirtualRange const&, u64 offset, int prot, bool shared);
@ -138,12 +139,12 @@ private:
blocker_set().unblock_all_blockers_whose_conditions_are_met();
}
LockRefPtr<Custody> m_custody;
LockRefPtr<Inode> m_inode;
NonnullLockRefPtr<File> m_file;
struct State {
OwnPtr<OpenFileDescriptionData> data;
RefPtr<Custody> custody;
off_t current_offset { 0 };
u32 file_flags { 0 };
bool readable : 1 { false };