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Kernel: Stop using *LockRefPtr for Thread

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These were stored in a bunch of places. The main one that's a bit iffy
is the Mutex::m_holder one, which I'm going to simplify in a subsequent
commit.

In Plan9FS and WorkQueue, we can't make the NNRPs const due to
initialization order problems. That's probably doable with further
cleanup, but left as an exercise for our future selves.

Before starting this, I expected the thread blockers to be a problem,
but as it turns out they were super straightforward (for once!) as they
don't mutate the thread after initiating a block, so they can just use
simple const-ified NNRPs.
This commit is contained in:
Andreas Kling 2023-04-02 20:40:47 +02:00
parent a098266ff5
commit c3915e4058
9 changed files with 26 additions and 30 deletions
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10
Kernel/Process.h
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@ -187,7 +187,7 @@ public:
struct ProcessAndFirstThread {
NonnullRefPtr<Process> process;
NonnullLockRefPtr<Thread> first_thread;
NonnullRefPtr<Thread> first_thread;
};
template<typename EntryFunction>
@ -203,7 +203,7 @@ public:
~Process();
LockRefPtr<Thread> create_kernel_thread(void (*entry)(void*), void* entry_data, u32 priority, NonnullOwnPtr<KString> name, u32 affinity = THREAD_AFFINITY_DEFAULT, bool joinable = true);
ErrorOr<NonnullRefPtr<Thread>> create_kernel_thread(void (*entry)(void*), void* entry_data, u32 priority, NonnullOwnPtr<KString> name, u32 affinity = THREAD_AFFINITY_DEFAULT, bool joinable = true);
bool is_profiling() const { return m_profiling; }
void set_profiling(bool profiling) { m_profiling = profiling; }
@ -570,7 +570,7 @@ public:
ErrorOr<void> set_coredump_property(NonnullOwnPtr<KString> key, NonnullOwnPtr<KString> value);
ErrorOr<void> try_set_coredump_property(StringView key, StringView value);
Vector<NonnullLockRefPtr<Thread>> const& threads_for_coredump(Badge<Coredump>) const { return m_threads_for_coredump; }
Vector<NonnullRefPtr<Thread>> const& threads_for_coredump(Badge<Coredump>) const { return m_threads_for_coredump; }
PerformanceEventBuffer* perf_events() { return m_perf_event_buffer; }
PerformanceEventBuffer const* perf_events() const { return m_perf_event_buffer; }
@ -600,7 +600,7 @@ private:
Process(NonnullOwnPtr<KString> name, NonnullRefPtr<Credentials>, ProcessID ppid, bool is_kernel_process, RefPtr<Custody> current_directory, RefPtr<Custody> executable, TTY* tty, UnveilNode unveil_tree, UnveilNode exec_unveil_tree);
static ErrorOr<ProcessAndFirstThread> create(NonnullOwnPtr<KString> name, UserID, GroupID, ProcessID ppid, bool is_kernel_process, RefPtr<Custody> current_directory = nullptr, RefPtr<Custody> executable = nullptr, TTY* = nullptr, Process* fork_parent = nullptr);
ErrorOr<NonnullLockRefPtr<Thread>> attach_resources(NonnullOwnPtr<Memory::AddressSpace>&&, Process* fork_parent);
ErrorOr<NonnullRefPtr<Thread>> attach_resources(NonnullOwnPtr<Memory::AddressSpace>&&, Process* fork_parent);
static ProcessID allocate_pid();
void kill_threads_except_self();
@ -892,7 +892,7 @@ private:
};
SpinlockProtected<Array<CoredumpProperty, 4>, LockRank::None> m_coredump_properties {};
Vector<NonnullLockRefPtr<Thread>> m_threads_for_coredump;
Vector<NonnullRefPtr<Thread>> m_threads_for_coredump;
struct SignalActionData {
VirtualAddress handler_or_sigaction;