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thread: Make the scheduler pointer a regular pointer

Conceptually, it doesn't make sense for a thread to be able to persist
the lifetime of a scheduler. A scheduler should be taking care of the
threads; the threads should not be taking care of the scheduler.

If the threads outlive the scheduler (or we simply don't actually
terminate/shutdown the threads), then it should be considered a bug
that we need to fix.

Attributing this to balika011, as they opened #1317 to attempt to fix
this in a similar way, but my refactoring of the kernel code caused
quite a few conflicts.
This commit is contained in:
balika011 2018-10-05 14:51:16 -04:00 committed by Lioncash
parent e51d715700
commit 1a5d6de0d4
2 changed files with 4 additions and 4 deletions

View file

@ -169,7 +169,7 @@ void Thread::ResumeFromWait() {
next_scheduler->ScheduleThread(this, current_priority);
// Change thread's scheduler
scheduler = next_scheduler;
scheduler = next_scheduler.get();
Core::System::GetInstance().CpuCore(processor_id).PrepareReschedule();
}
@ -233,7 +233,7 @@ ResultVal<SharedPtr<Thread>> Thread::Create(KernelCore& kernel, std::string name
thread->name = std::move(name);
thread->callback_handle = kernel.ThreadWakeupCallbackHandleTable().Create(thread).Unwrap();
thread->owner_process = owner_process;
thread->scheduler = Core::System::GetInstance().Scheduler(processor_id);
thread->scheduler = Core::System::GetInstance().Scheduler(processor_id).get();
thread->scheduler->AddThread(thread, priority);
thread->tls_address = thread->owner_process->MarkNextAvailableTLSSlotAsUsed(*thread);
@ -400,7 +400,7 @@ void Thread::ChangeCore(u32 core, u64 mask) {
next_scheduler->ScheduleThread(this, current_priority);
// Change thread's scheduler
scheduler = next_scheduler;
scheduler = next_scheduler.get();
Core::System::GetInstance().CpuCore(processor_id).PrepareReschedule();
}

View file

@ -419,7 +419,7 @@ private:
/// available. In case of a timeout, the object will be nullptr.
WakeupCallback wakeup_callback;
std::shared_ptr<Scheduler> scheduler;
Scheduler* scheduler = nullptr;
u32 ideal_core{0xFFFFFFFF};
u64 affinity_mask{0x1};