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hle: kernel: KLightConditionVariable: Migrate to updated KThreadQueue.

This commit is contained in:
bunnei 2021-11-09 20:54:44 -08:00
parent 423acf53b7
commit 5dff28290f
3 changed files with 87 additions and 54 deletions

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@ -185,6 +185,7 @@ add_library(core STATIC
hle/kernel/k_event.h
hle/kernel/k_handle_table.cpp
hle/kernel/k_handle_table.h
hle/kernel/k_light_condition_variable.cpp
hle/kernel/k_light_condition_variable.h
hle/kernel/k_light_lock.cpp
hle/kernel/k_light_lock.h

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@ -0,0 +1,80 @@
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "core/hle/kernel/k_light_condition_variable.h"
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
#include "core/hle/kernel/k_thread_queue.h"
#include "core/hle/kernel/svc_results.h"
namespace Kernel {
namespace {
class ThreadQueueImplForKLightConditionVariable final : public KThreadQueue {
private:
KThread::WaiterList* m_wait_list;
bool m_allow_terminating_thread;
public:
ThreadQueueImplForKLightConditionVariable(KernelCore& kernel_, KThread::WaiterList* wl,
bool term)
: KThreadQueue(kernel_), m_wait_list(wl), m_allow_terminating_thread(term) {}
virtual void CancelWait(KThread* waiting_thread, ResultCode wait_result,
bool cancel_timer_task) override {
// Only process waits if we're allowed to.
if (ResultTerminationRequested == wait_result && m_allow_terminating_thread) {
return;
}
// Remove the thread from the waiting thread from the light condition variable.
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
void KLightConditionVariable::Wait(KLightLock* lock, s64 timeout, bool allow_terminating_thread) {
// Create thread queue.
KThread* owner = GetCurrentThreadPointer(kernel);
ThreadQueueImplForKLightConditionVariable wait_queue(kernel, std::addressof(wait_list),
allow_terminating_thread);
// Sleep the thread.
{
KScopedSchedulerLockAndSleep lk(kernel, owner, timeout);
if (!allow_terminating_thread && owner->IsTerminationRequested()) {
lk.CancelSleep();
return;
}
lock->Unlock();
// Add the thread to the queue.
wait_list.push_back(*owner);
// Begin waiting.
owner->BeginWait(std::addressof(wait_queue));
}
// Re-acquire the lock.
lock->Lock();
}
void KLightConditionVariable::Broadcast() {
KScopedSchedulerLock lk(kernel);
// Signal all threads.
for (auto it = wait_list.begin(); it != wait_list.end(); it = wait_list.erase(it)) {
it->EndWait(ResultSuccess);
}
}
} // namespace Kernel

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@ -1,73 +1,25 @@
// Copyright 2020 yuzu Emulator Project
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
// This file references various implementation details from Atmosphere, an open-source firmware for
// the Nintendo Switch. Copyright 2018-2020 Atmosphere-NX.
#pragma once
#include "common/common_types.h"
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
#include "core/hle/kernel/time_manager.h"
#include "core/hle/kernel/k_thread.h"
namespace Kernel {
class KernelCore;
class KLightLock;
class KLightConditionVariable {
public:
explicit KLightConditionVariable(KernelCore& kernel_) : kernel{kernel_} {}
void Wait(KLightLock* lock, s64 timeout = -1, bool allow_terminating_thread = true) {
WaitImpl(lock, timeout, allow_terminating_thread);
}
void Broadcast() {
KScopedSchedulerLock lk{kernel};
// Signal all threads.
for (auto& thread : wait_list) {
thread.SetState(ThreadState::Runnable);
}
}
void Wait(KLightLock* lock, s64 timeout = -1, bool allow_terminating_thread = true);
void Broadcast();
private:
void WaitImpl(KLightLock* lock, s64 timeout, bool allow_terminating_thread) {
KThread* owner = GetCurrentThreadPointer(kernel);
// Sleep the thread.
{
KScopedSchedulerLockAndSleep lk{kernel, owner, timeout};
if (!allow_terminating_thread && owner->IsTerminationRequested()) {
lk.CancelSleep();
return;
}
lock->Unlock();
// Set the thread as waiting.
GetCurrentThread(kernel).SetState(ThreadState::Waiting);
// Add the thread to the queue.
wait_list.push_back(GetCurrentThread(kernel));
}
// Remove the thread from the wait list.
{
KScopedSchedulerLock sl{kernel};
wait_list.erase(wait_list.iterator_to(GetCurrentThread(kernel)));
}
// Cancel the task that the sleep setup.
kernel.TimeManager().UnscheduleTimeEvent(owner);
// Re-acquire the lock.
lock->Lock();
}
KernelCore& kernel;
KThread::WaiterList wait_list{};
};