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authorbunnei <bunneidev@gmail.com>2018-02-18 21:17:16 +0100
committerbunnei <bunneidev@gmail.com>2018-02-18 21:17:16 +0100
commitac81c02ed9401b137e83bece2edd6dee8d0a0af2 (patch)
treef849c805fdb9ac756ece2e2f72d6009c58676bd6 /src/core/hle/kernel/thread.cpp
parentkernel: Add Scheduler, which encapsulates the scheduling loading from Thread module. (diff)
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Diffstat (limited to 'src/core/hle/kernel/thread.cpp')
-rw-r--r--src/core/hle/kernel/thread.cpp169
1 files changed, 14 insertions, 155 deletions
diff --git a/src/core/hle/kernel/thread.cpp b/src/core/hle/kernel/thread.cpp
index 0fcc65cbf..dd0a8ae48 100644
--- a/src/core/hle/kernel/thread.cpp
+++ b/src/core/hle/kernel/thread.cpp
@@ -41,14 +41,6 @@ void Thread::Acquire(Thread* thread) {
// us to simply use a pool index or similar.
static Kernel::HandleTable wakeup_callback_handle_table;
-// Lists all thread ids that aren't deleted/etc.
-static std::vector<SharedPtr<Thread>> thread_list;
-
-// Lists only ready thread ids.
-static Common::ThreadQueueList<Thread*, THREADPRIO_LOWEST + 1> ready_queue;
-
-static SharedPtr<Thread> current_thread;
-
// The first available thread id at startup
static u32 next_thread_id;
@@ -63,10 +55,6 @@ inline static u32 const NewThreadId() {
Thread::Thread() {}
Thread::~Thread() {}
-Thread* GetCurrentThread() {
- return current_thread.get();
-}
-
/**
* Check if the specified thread is waiting on the specified address to be arbitrated
* @param thread The thread to test
@@ -86,7 +74,7 @@ void Thread::Stop() {
// Clean up thread from ready queue
// This is only needed when the thread is termintated forcefully (SVC TerminateProcess)
if (status == THREADSTATUS_READY) {
- ready_queue.remove(current_priority, this);
+ Core::System::GetInstance().Scheduler().UnscheduleThread(this, current_priority);
}
status = THREADSTATUS_DEAD;
@@ -109,78 +97,6 @@ void Thread::Stop() {
Kernel::g_current_process->tls_slots[tls_page].reset(tls_slot);
}
-/**
- * Switches the CPU's active thread context to that of the specified thread
- * @param new_thread The thread to switch to
- */
-static void SwitchContext(Thread* new_thread) {
- Thread* previous_thread = GetCurrentThread();
-
- // Save context for previous thread
- if (previous_thread) {
- previous_thread->last_running_ticks = CoreTiming::GetTicks();
- Core::CPU().SaveContext(previous_thread->context);
-
- if (previous_thread->status == THREADSTATUS_RUNNING) {
- // This is only the case when a reschedule is triggered without the current thread
- // yielding execution (i.e. an event triggered, system core time-sliced, etc)
- ready_queue.push_front(previous_thread->current_priority, previous_thread);
- previous_thread->status = THREADSTATUS_READY;
- }
- }
-
- // Load context of new thread
- if (new_thread) {
- ASSERT_MSG(new_thread->status == THREADSTATUS_READY,
- "Thread must be ready to become running.");
-
- // Cancel any outstanding wakeup events for this thread
- CoreTiming::UnscheduleEvent(ThreadWakeupEventType, new_thread->callback_handle);
-
- auto previous_process = Kernel::g_current_process;
-
- current_thread = new_thread;
-
- ready_queue.remove(new_thread->current_priority, new_thread);
- new_thread->status = THREADSTATUS_RUNNING;
-
- if (previous_process != current_thread->owner_process) {
- Kernel::g_current_process = current_thread->owner_process;
- SetCurrentPageTable(&Kernel::g_current_process->vm_manager.page_table);
- }
-
- Core::CPU().LoadContext(new_thread->context);
- Core::CPU().SetTlsAddress(new_thread->GetTLSAddress());
- } else {
- current_thread = nullptr;
- // Note: We do not reset the current process and current page table when idling because
- // technically we haven't changed processes, our threads are just paused.
- }
-}
-
-/**
- * Pops and returns the next thread from the thread queue
- * @return A pointer to the next ready thread
- */
-static Thread* PopNextReadyThread() {
- Thread* next;
- Thread* thread = GetCurrentThread();
-
- if (thread && thread->status == THREADSTATUS_RUNNING) {
- // We have to do better than the current thread.
- // This call returns null when that's not possible.
- next = ready_queue.pop_first_better(thread->current_priority);
- if (!next) {
- // Otherwise just keep going with the current thread
- next = thread;
- }
- } else {
- next = ready_queue.pop_first();
- }
-
- return next;
-}
-
void WaitCurrentThread_Sleep() {
Thread* thread = GetCurrentThread();
thread->status = THREADSTATUS_WAIT_SLEEP;
@@ -195,8 +111,7 @@ void WaitCurrentThread_ArbitrateAddress(VAddr wait_address) {
void ExitCurrentThread() {
Thread* thread = GetCurrentThread();
thread->Stop();
- thread_list.erase(std::remove(thread_list.begin(), thread_list.end(), thread),
- thread_list.end());
+ Core::System::GetInstance().Scheduler().RemoveThread(thread);
}
/**
@@ -274,32 +189,12 @@ void Thread::ResumeFromWait() {
wakeup_callback = nullptr;
- ready_queue.push_back(current_priority, this);
status = THREADSTATUS_READY;
+ Core::System::GetInstance().Scheduler().ScheduleThread(this, current_priority);
Core::System::GetInstance().PrepareReschedule();
}
/**
- * Prints the thread queue for debugging purposes
- */
-static void DebugThreadQueue() {
- Thread* thread = GetCurrentThread();
- if (!thread) {
- LOG_DEBUG(Kernel, "Current: NO CURRENT THREAD");
- } else {
- LOG_DEBUG(Kernel, "0x%02X %u (current)", thread->current_priority,
- GetCurrentThread()->GetObjectId());
- }
-
- for (auto& t : thread_list) {
- u32 priority = ready_queue.contains(t.get());
- if (priority != -1) {
- LOG_DEBUG(Kernel, "0x%02X %u", priority, t->GetObjectId());
- }
- }
-}
-
-/**
* Finds a free location for the TLS section of a thread.
* @param tls_slots The TLS page array of the thread's owner process.
* Returns a tuple of (page, slot, alloc_needed) where:
@@ -366,8 +261,7 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
SharedPtr<Thread> thread(new Thread);
- thread_list.push_back(thread);
- ready_queue.prepare(priority);
+ Core::System::GetInstance().Scheduler().AddThread(thread, priority);
thread->thread_id = NewThreadId();
thread->status = THREADSTATUS_DORMANT;
@@ -438,12 +332,7 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
void Thread::SetPriority(u32 priority) {
ASSERT_MSG(priority <= THREADPRIO_LOWEST && priority >= THREADPRIO_HIGHEST,
"Invalid priority value.");
- // If thread was ready, adjust queues
- if (status == THREADSTATUS_READY)
- ready_queue.move(this, current_priority, priority);
- else
- ready_queue.prepare(priority);
-
+ Core::System::GetInstance().Scheduler().SetThreadPriority(this, priority);
nominal_priority = current_priority = priority;
}
@@ -457,11 +346,7 @@ void Thread::UpdatePriority() {
}
void Thread::BoostPriority(u32 priority) {
- // If thread was ready, adjust queues
- if (status == THREADSTATUS_READY)
- ready_queue.move(this, current_priority, priority);
- else
- ready_queue.prepare(priority);
+ Core::System::GetInstance().Scheduler().SetThreadPriority(this, priority);
current_priority = priority;
}
@@ -487,25 +372,6 @@ SharedPtr<Thread> SetupMainThread(VAddr entry_point, u32 priority,
return thread;
}
-bool HaveReadyThreads() {
- return ready_queue.get_first() != nullptr;
-}
-
-void Reschedule() {
- Thread* cur = GetCurrentThread();
- Thread* next = PopNextReadyThread();
-
- if (cur && next) {
- LOG_TRACE(Kernel, "context switch %u -> %u", cur->GetObjectId(), next->GetObjectId());
- } else if (cur) {
- LOG_TRACE(Kernel, "context switch %u -> idle", cur->GetObjectId());
- } else if (next) {
- LOG_TRACE(Kernel, "context switch idle -> %u", next->GetObjectId());
- }
-
- SwitchContext(next);
-}
-
void Thread::SetWaitSynchronizationResult(ResultCode result) {
context.cpu_registers[0] = result.raw;
}
@@ -528,25 +394,18 @@ VAddr Thread::GetCommandBufferAddress() const {
////////////////////////////////////////////////////////////////////////////////////////////////////
+/**
+ * Gets the current thread
+ */
+Thread* GetCurrentThread() {
+ return Core::System::GetInstance().Scheduler().GetCurrentThread();
+}
+
void ThreadingInit() {
ThreadWakeupEventType = CoreTiming::RegisterEvent("ThreadWakeupCallback", ThreadWakeupCallback);
-
- current_thread = nullptr;
next_thread_id = 1;
}
-void ThreadingShutdown() {
- current_thread = nullptr;
-
- for (auto& t : thread_list) {
- t->Stop();
- }
- thread_list.clear();
- ready_queue.clear();
-}
-
-const std::vector<SharedPtr<Thread>>& GetThreadList() {
- return thread_list;
-}
+void ThreadingShutdown() {}
} // namespace Kernel