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AK+Kernel: Make IntrusiveList capable of holding non-raw pointers

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This should allow creating intrusive lists that have smart pointers,
while remaining free (compared to the impl before this commit) when
holding raw pointers :^)
As a sidenote, this also adds a `RawPtr<T>` type, which is just
equivalent to `T*`.
Note that this does not actually use such functionality, but is only
expected to pave the way for #6369, to replace NonnullRefPtrVector<T>
with intrusive lists.

As it is with zero-cost things, this makes the interface a bit less nice
by requiring the type name of what an `IntrusiveListNode` holds (and
optionally its container, if not RawPtr), and also requiring the type of
the container (normally `RawPtr`) on the `IntrusiveList` instance.
This commit is contained in:
AnotherTest 2021-04-16 16:33:24 +04:30 • committed by Andreas Kling
parent fb814ee720
commit e4412f1f59
11 changed files with 143 additions and 80 deletions
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6
Kernel/Thread.h
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@ -88,7 +88,7 @@ class Thread
friend class Process;
friend class ProtectedProcessBase;
friend class Scheduler;
friend class ThreadReadyQueue;
friend struct ThreadReadyQueue;
static SpinLock<u8> g_tid_map_lock;
static HashMap<ThreadID, Thread*>* g_tid_map;
@ -1129,7 +1129,7 @@ public:
private:
Thread(NonnullRefPtr<Process>, NonnullOwnPtr<Region> kernel_stack_region);
IntrusiveListNode m_process_thread_list_node;
IntrusiveListNode<Thread> m_process_thread_list_node;
int m_runnable_priority { -1 };
friend class WaitQueue;
@ -1202,7 +1202,7 @@ private:
TSS m_tss {};
TrapFrame* m_current_trap { nullptr };
u32 m_saved_critical { 1 };
IntrusiveListNode m_ready_queue_node;
IntrusiveListNode<Thread> m_ready_queue_node;
Atomic<u32> m_cpu { 0 };
u32 m_cpu_affinity { THREAD_AFFINITY_DEFAULT };
u32 m_ticks_left { 0 };