bc4a203fcf
It only reschedules when the PLL changes, which changes in steps. This also reads back much more accurate Mhz for each of PLL, CPU, and bus.
128 lines
3.7 KiB
C++
128 lines
3.7 KiB
C++
// Copyright (c) 2012- PPSSPP Project / Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#pragma once
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#include <string>
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#include "Common/CommonTypes.h"
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// This is a system to schedule events into the emulated machine's future. Time is measured
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// in main CPU clock cycles.
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// To schedule an event, you first have to register its type. This is where you pass in the
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// callback. You then schedule events using the type id you get back.
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// See HW/SystemTimers.cpp for the main part of Dolphin's usage of this scheduler.
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// The int cyclesLate that the callbacks get is how many cycles late it was.
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// So to schedule a new event on a regular basis:
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// inside callback:
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// ScheduleEvent(periodInCycles - cyclesLate, callback, "whatever")
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class PointerWrap;
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//const int CPU_HZ = 222000000;
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extern int CPU_HZ;
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inline s64 msToCycles(int ms) {
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return CPU_HZ / 1000 * ms;
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}
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inline s64 msToCycles(float ms) {
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return (s64)(CPU_HZ * ms * (0.001f));
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}
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inline s64 msToCycles(double ms) {
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return (s64)(CPU_HZ * ms * (0.001));
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}
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inline s64 usToCycles(float us) {
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return (s64)(CPU_HZ * us * (0.000001f));
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}
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inline s64 usToCycles(int us) {
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return (CPU_HZ / 1000000 * (s64)us);
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}
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inline s64 usToCycles(s64 us) {
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return (CPU_HZ / 1000000 * us);
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}
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inline s64 usToCycles(u64 us) {
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return (s64)(CPU_HZ / 1000000 * us);
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}
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inline s64 cyclesToUs(s64 cycles) {
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return (cycles * CPU_HZ) / 1000000;
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}
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namespace CoreTiming
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{
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void Init();
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void Shutdown();
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typedef void (*MHzChangeCallback)();
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typedef void (*TimedCallback)(u64 userdata, int cyclesLate);
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u64 GetTicks();
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u64 GetIdleTicks();
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u64 GetGlobalTimeUs();
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u64 GetGlobalTimeUsScaled();
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// Returns the event_type identifier.
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int RegisterEvent(const char *name, TimedCallback callback);
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// For save states.
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void RestoreRegisterEvent(int event_type, const char *name, TimedCallback callback);
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void UnregisterAllEvents();
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// userdata MAY NOT CONTAIN POINTERS. userdata might get written and reloaded from disk,
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// when we implement state saves.
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void ScheduleEvent(s64 cyclesIntoFuture, int event_type, u64 userdata=0);
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void ScheduleEvent_Threadsafe(s64 cyclesIntoFuture, int event_type, u64 userdata=0);
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void ScheduleEvent_Threadsafe_Immediate(int event_type, u64 userdata=0);
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s64 UnscheduleEvent(int event_type, u64 userdata);
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s64 UnscheduleThreadsafeEvent(int event_type, u64 userdata);
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void RemoveEvent(int event_type);
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void RemoveThreadsafeEvent(int event_type);
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void RemoveAllEvents(int event_type);
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bool IsScheduled(int event_type);
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void Advance();
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void MoveEvents();
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void ProcessFifoWaitEvents();
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void ForceCheck();
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// Pretend that the main CPU has executed enough cycles to reach the next event.
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void Idle(int maxIdle = 0);
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// Clear all pending events. This should ONLY be done on exit or state load.
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void ClearPendingEvents();
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void LogPendingEvents();
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// Warning: not included in save states.
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void RegisterMHzChangeCallback(MHzChangeCallback callback);
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std::string GetScheduledEventsSummary();
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void DoState(PointerWrap &p);
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void SetClockFrequencyHz(int cpuHz);
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int GetClockFrequencyHz();
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extern int slicelength;
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}; // end of namespace
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