mirror of
https://github.com/yuzu-mirror/yuzu
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6594853eb1
This retrieves:
if (curr_thread == handle_thread) {
result = total_thread_ticks + (hardware_tick_count - last_context_switch_ticks);
} else if (curr_thread == handle_thread && sub_id == current_core_index) {
result = hardware_tick_count - last_context_switch_ticks;
}
99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
// Copyright 2018 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <mutex>
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#include <vector>
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#include "common/common_types.h"
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#include "common/thread_queue_list.h"
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#include "core/hle/kernel/object.h"
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#include "core/hle/kernel/thread.h"
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namespace Core {
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class ARM_Interface;
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}
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namespace Kernel {
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class Process;
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class Scheduler final {
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public:
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explicit Scheduler(Core::ARM_Interface& cpu_core);
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~Scheduler();
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/// Returns whether there are any threads that are ready to run.
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bool HaveReadyThreads() const;
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/// Reschedules to the next available thread (call after current thread is suspended)
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void Reschedule();
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/// Gets the current running thread
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Thread* GetCurrentThread() const;
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/// Gets the timestamp for the last context switch in ticks.
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u64 GetLastContextSwitchTicks() const;
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/// Adds a new thread to the scheduler
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void AddThread(SharedPtr<Thread> thread, u32 priority);
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/// Removes a thread from the scheduler
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void RemoveThread(Thread* thread);
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/// Schedules a thread that has become "ready"
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void ScheduleThread(Thread* thread, u32 priority);
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/// Unschedules a thread that was already scheduled
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void UnscheduleThread(Thread* thread, u32 priority);
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/// Sets the priority of a thread in the scheduler
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void SetThreadPriority(Thread* thread, u32 priority);
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/// Returns a list of all threads managed by the scheduler
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const std::vector<SharedPtr<Thread>>& GetThreadList() const {
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return thread_list;
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}
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private:
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/**
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* Pops and returns the next thread from the thread queue
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* @return A pointer to the next ready thread
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*/
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Thread* PopNextReadyThread();
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/**
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* Switches the CPU's active thread context to that of the specified thread
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* @param new_thread The thread to switch to
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*/
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void SwitchContext(Thread* new_thread);
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/**
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* Called on every context switch to update the internal timestamp
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* This also updates the running time ticks for the given thread and
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* process using the following difference:
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*
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* ticks += most_recent_ticks - last_context_switch_ticks
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*
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* The internal tick timestamp for the scheduler is simply the
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* most recent tick count retrieved. No special arithmetic is
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* applied to it.
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*/
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void UpdateLastContextSwitchTime(Thread* thread, Process* process);
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/// Lists all thread ids that aren't deleted/etc.
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std::vector<SharedPtr<Thread>> thread_list;
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/// Lists only ready thread ids.
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Common::ThreadQueueList<Thread*, THREADPRIO_LOWEST + 1> ready_queue;
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SharedPtr<Thread> current_thread = nullptr;
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Core::ARM_Interface& cpu_core;
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u64 last_context_switch_time = 0;
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static std::mutex scheduler_mutex;
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};
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} // namespace Kernel
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