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hle: kernel: KThread: Migrate to updated KThreadQueue (part 1).

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This commit is contained in:
bunnei 2021-11-10 22:28:30 -08:00
parent beb55cb90e
commit b0671c7cfa
3 changed files with 71 additions and 60 deletions
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121
src/core/hle/kernel/k_thread.cpp
View File

@ -59,6 +59,35 @@ static void ResetThreadContext64(Core::ARM_Interface::ThreadContext64& context,
namespace Kernel {
namespace {
class ThreadQueueImplForKThreadSleep final : public KThreadQueueWithoutEndWait {
public:
explicit ThreadQueueImplForKThreadSleep(KernelCore& kernel_)
: KThreadQueueWithoutEndWait(kernel_) {}
};
class ThreadQueueImplForKThreadSetProperty final : public KThreadQueue {
private:
KThread::WaiterList* m_wait_list;
public:
explicit ThreadQueueImplForKThreadSetProperty(KernelCore& kernel_, KThread::WaiterList* wl)
: KThreadQueue(kernel_), m_wait_list(wl) { // ...
}
virtual void CancelWait(KThread* waiting_thread, ResultCode wait_result,
bool cancel_timer_task) override {
// Remove the thread from the wait list.
m_wait_list->erase(m_wait_list->iterator_to(*waiting_thread));
// Invoke the base cancel wait handler.
KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task);
}
};
} // namespace
KThread::KThread(KernelCore& kernel_)
: KAutoObjectWithSlabHeapAndContainer{kernel_}, activity_pause_lock{kernel_} {}
KThread::~KThread() = default;
@ -274,11 +303,14 @@ void KThread::Finalize() {
auto it = waiter_list.begin();
while (it != waiter_list.end()) {
// The thread shouldn't be a kernel waiter.
// Clear the lock owner
it->SetLockOwner(nullptr);
it->SetWaitResult(ResultInvalidState);
it->Wakeup();
// Erase the waiter from our list.
it = waiter_list.erase(it);
// Cancel the thread's wait.
it->CancelWait(ResultInvalidState, true);
}
}
@ -295,15 +327,12 @@ bool KThread::IsSignaled() const {
return signaled;
}
void KThread::Wakeup() {
KScopedSchedulerLock sl{kernel};
void KThread::OnTimer() {
ASSERT(kernel.GlobalSchedulerContext().IsLocked());
// If we're waiting, cancel the wait.
if (GetState() == ThreadState::Waiting) {
if (sleeping_queue != nullptr) {
sleeping_queue->EndWait(this, ResultSuccess);
} else {
SetState(ThreadState::Runnable);
}
sleeping_queue->CancelWait(this, ResultTimedOut, false);
}
}
@ -475,7 +504,6 @@ ResultCode KThread::GetPhysicalCoreMask(s32* out_ideal_core, u64* out_affinity_m
return ResultSuccess;
}
ResultCode KThread::SetCoreMask(s32 cpu_core_id, u64 v_affinity_mask) {
ASSERT(parent != nullptr);
ASSERT(v_affinity_mask != 0);
@ -642,15 +670,9 @@ void KThread::WaitCancel() {
KScopedSchedulerLock sl{kernel};
// Check if we're waiting and cancellable.
if (GetState() == ThreadState::Waiting && cancellable) {
if (sleeping_queue != nullptr) {
sleeping_queue->WakeupThread(this);
wait_cancelled = true;
} else {
SetWaitResult(ResultCancelled);
SetState(ThreadState::Runnable);
wait_cancelled = false;
}
if (this->GetState() == ThreadState::Waiting && cancellable) {
wait_cancelled = false;
sleeping_queue->CancelWait(this, ResultCancelled, true);
} else {
// Otherwise, note that we cancelled a wait.
wait_cancelled = true;
@ -701,60 +723,59 @@ ResultCode KThread::SetActivity(Svc::ThreadActivity activity) {
// Set the activity.
{
// Lock the scheduler.
KScopedSchedulerLock sl{kernel};
KScopedSchedulerLock sl(kernel);
// Verify our state.
const auto cur_state = GetState();
const auto cur_state = this->GetState();
R_UNLESS((cur_state == ThreadState::Waiting || cur_state == ThreadState::Runnable),
ResultInvalidState);
// Either pause or resume.
if (activity == Svc::ThreadActivity::Paused) {
// Verify that we're not suspended.
R_UNLESS(!IsSuspendRequested(SuspendType::Thread), ResultInvalidState);
R_UNLESS(!this->IsSuspendRequested(SuspendType::Thread), ResultInvalidState);
// Suspend.
RequestSuspend(SuspendType::Thread);
this->RequestSuspend(SuspendType::Thread);
} else {
ASSERT(activity == Svc::ThreadActivity::Runnable);
// Verify that we're suspended.
R_UNLESS(IsSuspendRequested(SuspendType::Thread), ResultInvalidState);
R_UNLESS(this->IsSuspendRequested(SuspendType::Thread), ResultInvalidState);
// Resume.
Resume(SuspendType::Thread);
this->Resume(SuspendType::Thread);
}
}
// If the thread is now paused, update the pinned waiter list.
if (activity == Svc::ThreadActivity::Paused) {
bool thread_is_pinned{};
bool thread_is_current{};
ThreadQueueImplForKThreadSetProperty wait_queue_(kernel,
std::addressof(pinned_waiter_list));
bool thread_is_current;
do {
// Lock the scheduler.
KScopedSchedulerLock sl{kernel};
KScopedSchedulerLock sl(kernel);
// Don't do any further management if our termination has been requested.
R_SUCCEED_IF(IsTerminationRequested());
R_SUCCEED_IF(this->IsTerminationRequested());
// By default, treat the thread as not current.
thread_is_current = false;
// Check whether the thread is pinned.
if (GetStackParameters().is_pinned) {
if (this->GetStackParameters().is_pinned) {
// Verify that the current thread isn't terminating.
R_UNLESS(!GetCurrentThread(kernel).IsTerminationRequested(),
ResultTerminationRequested);
// Note that the thread was pinned and not current.
thread_is_pinned = true;
thread_is_current = false;
// Wait until the thread isn't pinned any more.
pinned_waiter_list.push_back(GetCurrentThread(kernel));
GetCurrentThread(kernel).SetState(ThreadState::Waiting);
GetCurrentThread(kernel).BeginWait(std::addressof(wait_queue_));
} else {
// Check if the thread is currently running.
// If it is, we'll need to retry.
thread_is_current = false;
for (auto i = 0; i < static_cast<s32>(Core::Hardware::NUM_CPU_CORES); ++i) {
if (kernel.Scheduler(i).GetCurrentThread() == this) {
thread_is_current = true;
@ -763,16 +784,6 @@ ResultCode KThread::SetActivity(Svc::ThreadActivity activity) {
}
}
} while (thread_is_current);
// If the thread was pinned, it no longer is, and we should remove the current thread from
// our waiter list.
if (thread_is_pinned) {
// Lock the scheduler.
KScopedSchedulerLock sl{kernel};
// Remove from the list.
pinned_waiter_list.erase(pinned_waiter_list.iterator_to(GetCurrentThread(kernel)));
}
}
return ResultSuccess;
@ -1000,26 +1011,22 @@ ResultCode KThread::Sleep(s64 timeout) {
ASSERT(this == GetCurrentThreadPointer(kernel));
ASSERT(timeout > 0);
ThreadQueueImplForKThreadSleep wait_queue(kernel);
{
// Setup the scheduling lock and sleep.
KScopedSchedulerLockAndSleep slp{kernel, this, timeout};
KScopedSchedulerLockAndSleep slp(kernel, this, timeout);
// Check if the thread should terminate.
if (IsTerminationRequested()) {
if (this->IsTerminationRequested()) {
slp.CancelSleep();
return ResultTerminationRequested;
}
// Mark the thread as waiting.
SetState(ThreadState::Waiting);
// Wait for the sleep to end.
this->BeginWait(std::addressof(wait_queue));
SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Sleep);
}
// The lock/sleep is done.
// Cancel the timer.
kernel.TimeManager().UnscheduleTimeEvent(this);
return ResultSuccess;
}

4
src/core/hle/kernel/k_thread.h
View File

@ -161,8 +161,6 @@ public:
}
}
void Wakeup();
void SetBasePriority(s32 value);
[[nodiscard]] ResultCode Run();
@ -380,6 +378,8 @@ public:
[[nodiscard]] bool IsSignaled() const override;
void OnTimer();
static void PostDestroy(uintptr_t arg);
[[nodiscard]] static ResultCode InitializeDummyThread(KThread* thread);

6
src/core/hle/kernel/time_manager.cpp
View File

@ -5,6 +5,7 @@
#include "common/assert.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/time_manager.h"
@ -15,7 +16,10 @@ TimeManager::TimeManager(Core::System& system_) : system{system_} {
Core::Timing::CreateEvent("Kernel::TimeManagerCallback",
[this](std::uintptr_t thread_handle, std::chrono::nanoseconds) {
KThread* thread = reinterpret_cast<KThread*>(thread_handle);
thread->Wakeup();
{
KScopedSchedulerLock sl(system.Kernel());
thread->OnTimer();
}
});
}