625 lines
14 KiB
C++
625 lines
14 KiB
C++
// Copyright 2013 Dolphin Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include <vector>
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#include <cstdio>
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#include "common/msg_handler.h"
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#include "common/std_mutex.h"
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#include "common/atomic.h"
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#include "common/chunk_file.h"
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#include "core/core_timing.h"
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#include "core/core.h"
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int g_clock_rate_arm11 = 268123480;
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// is this really necessary?
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#define INITIAL_SLICE_LENGTH 20000
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#define MAX_SLICE_LENGTH 100000000
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namespace CoreTiming
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{
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struct EventType
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{
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EventType() {}
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EventType(TimedCallback cb, const char *n)
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: callback(cb), name(n) {}
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TimedCallback callback;
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const char *name;
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};
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std::vector<EventType> event_types;
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struct BaseEvent
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{
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s64 time;
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u64 userdata;
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int type;
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// Event *next;
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};
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typedef LinkedListItem<BaseEvent> Event;
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Event *first;
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Event *tsFirst;
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Event *tsLast;
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// event pools
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Event *eventPool = 0;
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Event *eventTsPool = 0;
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int allocatedTsEvents = 0;
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// Optimization to skip MoveEvents when possible.
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volatile u32 hasTsEvents = false;
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// Downcount has been moved to currentMIPS, to save a couple of clocks in every ARM JIT block
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// as we can already reach that structure through a register.
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int slicelength;
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MEMORY_ALIGNED16(s64) globalTimer;
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s64 idledCycles;
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static std::recursive_mutex externalEventSection;
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// Warning: not included in save state.
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void(*advanceCallback)(int cyclesExecuted) = NULL;
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void SetClockFrequencyMHz(int cpuMhz)
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{
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g_clock_rate_arm11 = cpuMhz * 1000000;
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// TODO: Rescale times of scheduled events?
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}
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int GetClockFrequencyMHz()
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{
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return g_clock_rate_arm11 / 1000000;
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}
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Event* GetNewEvent()
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{
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if (!eventPool)
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return new Event;
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Event* ev = eventPool;
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eventPool = ev->next;
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return ev;
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}
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Event* GetNewTsEvent()
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{
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allocatedTsEvents++;
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if (!eventTsPool)
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return new Event;
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Event* ev = eventTsPool;
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eventTsPool = ev->next;
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return ev;
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}
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void FreeEvent(Event* ev)
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{
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ev->next = eventPool;
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eventPool = ev;
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}
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void FreeTsEvent(Event* ev)
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{
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ev->next = eventTsPool;
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eventTsPool = ev;
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allocatedTsEvents--;
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}
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int RegisterEvent(const char *name, TimedCallback callback)
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{
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event_types.push_back(EventType(callback, name));
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return (int)event_types.size() - 1;
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}
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void AntiCrashCallback(u64 userdata, int cyclesLate)
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{
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ERROR_LOG(TIME, "Savestate broken: an unregistered event was called.");
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Core::Halt("invalid timing events");
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}
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void RestoreRegisterEvent(int event_type, const char *name, TimedCallback callback)
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{
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if (event_type >= (int)event_types.size())
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event_types.resize(event_type + 1, EventType(AntiCrashCallback, "INVALID EVENT"));
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event_types[event_type] = EventType(callback, name);
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}
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void UnregisterAllEvents()
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{
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if (first)
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PanicAlert("Cannot unregister events with events pending");
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event_types.clear();
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}
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void Init()
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{
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//currentMIPS->downcount = INITIAL_SLICE_LENGTH;
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//slicelength = INITIAL_SLICE_LENGTH;
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globalTimer = 0;
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idledCycles = 0;
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hasTsEvents = 0;
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}
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void Shutdown()
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{
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MoveEvents();
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ClearPendingEvents();
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UnregisterAllEvents();
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while (eventPool)
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{
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Event *ev = eventPool;
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eventPool = ev->next;
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delete ev;
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}
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std::lock_guard<std::recursive_mutex> lk(externalEventSection);
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while (eventTsPool)
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{
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Event *ev = eventTsPool;
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eventTsPool = ev->next;
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delete ev;
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}
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}
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u64 GetTicks()
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{
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ERROR_LOG(TIME, "Unimplemented function!");
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return 0;
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//return (u64)globalTimer + slicelength - currentMIPS->downcount;
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}
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u64 GetIdleTicks()
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{
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return (u64)idledCycles;
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}
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// This is to be called when outside threads, such as the graphics thread, wants to
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// schedule things to be executed on the main thread.
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void ScheduleEvent_Threadsafe(s64 cyclesIntoFuture, int event_type, u64 userdata)
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{
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std::lock_guard<std::recursive_mutex> lk(externalEventSection);
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Event *ne = GetNewTsEvent();
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ne->time = GetTicks() + cyclesIntoFuture;
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ne->type = event_type;
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ne->next = 0;
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ne->userdata = userdata;
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if (!tsFirst)
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tsFirst = ne;
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if (tsLast)
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tsLast->next = ne;
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tsLast = ne;
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Common::AtomicStoreRelease(hasTsEvents, 1);
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}
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// Same as ScheduleEvent_Threadsafe(0, ...) EXCEPT if we are already on the CPU thread
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// in which case the event will get handled immediately, before returning.
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void ScheduleEvent_Threadsafe_Immediate(int event_type, u64 userdata)
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{
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if (false) //Core::IsCPUThread())
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{
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std::lock_guard<std::recursive_mutex> lk(externalEventSection);
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event_types[event_type].callback(userdata, 0);
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}
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else
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ScheduleEvent_Threadsafe(0, event_type, userdata);
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}
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void ClearPendingEvents()
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{
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while (first)
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{
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Event *e = first->next;
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FreeEvent(first);
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first = e;
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}
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}
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void AddEventToQueue(Event* ne)
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{
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Event* prev = NULL;
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Event** pNext = &first;
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for (;;)
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{
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Event*& next = *pNext;
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if (!next || ne->time < next->time)
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{
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ne->next = next;
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next = ne;
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break;
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}
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prev = next;
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pNext = &prev->next;
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}
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}
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// This must be run ONLY from within the cpu thread
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// cyclesIntoFuture may be VERY inaccurate if called from anything else
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// than Advance
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void ScheduleEvent(s64 cyclesIntoFuture, int event_type, u64 userdata)
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{
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Event *ne = GetNewEvent();
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ne->userdata = userdata;
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ne->type = event_type;
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ne->time = GetTicks() + cyclesIntoFuture;
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AddEventToQueue(ne);
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}
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// Returns cycles left in timer.
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s64 UnscheduleEvent(int event_type, u64 userdata)
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{
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s64 result = 0;
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if (!first)
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return result;
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while (first)
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{
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if (first->type == event_type && first->userdata == userdata)
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{
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result = first->time - globalTimer;
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Event *next = first->next;
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FreeEvent(first);
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first = next;
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}
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else
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{
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break;
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}
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}
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if (!first)
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return result;
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Event *prev = first;
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Event *ptr = prev->next;
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while (ptr)
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{
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if (ptr->type == event_type && ptr->userdata == userdata)
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{
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result = ptr->time - globalTimer;
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prev->next = ptr->next;
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FreeEvent(ptr);
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ptr = prev->next;
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}
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else
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{
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prev = ptr;
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ptr = ptr->next;
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}
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}
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return result;
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}
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s64 UnscheduleThreadsafeEvent(int event_type, u64 userdata)
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{
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s64 result = 0;
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std::lock_guard<std::recursive_mutex> lk(externalEventSection);
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if (!tsFirst)
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return result;
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while (tsFirst)
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{
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if (tsFirst->type == event_type && tsFirst->userdata == userdata)
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{
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result = tsFirst->time - globalTimer;
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Event *next = tsFirst->next;
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FreeTsEvent(tsFirst);
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tsFirst = next;
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}
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else
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{
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break;
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}
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}
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if (!tsFirst)
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{
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tsLast = NULL;
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return result;
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}
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Event *prev = tsFirst;
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Event *ptr = prev->next;
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while (ptr)
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{
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if (ptr->type == event_type && ptr->userdata == userdata)
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{
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result = ptr->time - globalTimer;
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prev->next = ptr->next;
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if (ptr == tsLast)
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tsLast = prev;
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FreeTsEvent(ptr);
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ptr = prev->next;
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}
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else
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{
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prev = ptr;
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ptr = ptr->next;
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}
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}
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return result;
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}
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// Warning: not included in save state.
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void RegisterAdvanceCallback(void(*callback)(int cyclesExecuted))
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{
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advanceCallback = callback;
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}
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bool IsScheduled(int event_type)
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{
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if (!first)
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return false;
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Event *e = first;
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while (e) {
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if (e->type == event_type)
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return true;
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e = e->next;
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}
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return false;
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}
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void RemoveEvent(int event_type)
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{
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if (!first)
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return;
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while (first)
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{
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if (first->type == event_type)
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{
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Event *next = first->next;
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FreeEvent(first);
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first = next;
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}
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else
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{
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break;
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}
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}
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if (!first)
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return;
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Event *prev = first;
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Event *ptr = prev->next;
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while (ptr)
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{
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if (ptr->type == event_type)
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{
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prev->next = ptr->next;
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FreeEvent(ptr);
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ptr = prev->next;
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}
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else
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{
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prev = ptr;
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ptr = ptr->next;
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}
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}
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}
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void RemoveThreadsafeEvent(int event_type)
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{
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std::lock_guard<std::recursive_mutex> lk(externalEventSection);
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if (!tsFirst)
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{
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return;
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}
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while (tsFirst)
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{
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if (tsFirst->type == event_type)
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{
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Event *next = tsFirst->next;
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FreeTsEvent(tsFirst);
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tsFirst = next;
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}
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else
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{
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break;
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}
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}
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if (!tsFirst)
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{
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tsLast = NULL;
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return;
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}
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Event *prev = tsFirst;
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Event *ptr = prev->next;
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while (ptr)
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{
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if (ptr->type == event_type)
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{
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prev->next = ptr->next;
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if (ptr == tsLast)
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tsLast = prev;
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FreeTsEvent(ptr);
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ptr = prev->next;
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}
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else
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{
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prev = ptr;
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ptr = ptr->next;
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}
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}
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}
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void RemoveAllEvents(int event_type)
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{
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RemoveThreadsafeEvent(event_type);
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RemoveEvent(event_type);
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}
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//This raise only the events required while the fifo is processing data
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void ProcessFifoWaitEvents()
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{
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while (first)
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{
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if (first->time <= globalTimer)
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{
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// LOG(TIMER, "[Scheduler] %s (%lld, %lld) ",
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// first->name ? first->name : "?", (u64)globalTimer, (u64)first->time);
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Event* evt = first;
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first = first->next;
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event_types[evt->type].callback(evt->userdata, (int)(globalTimer - evt->time));
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FreeEvent(evt);
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}
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else
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{
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break;
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}
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}
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}
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void MoveEvents()
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{
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Common::AtomicStoreRelease(hasTsEvents, 0);
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std::lock_guard<std::recursive_mutex> lk(externalEventSection);
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// Move events from async queue into main queue
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while (tsFirst)
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{
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Event *next = tsFirst->next;
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AddEventToQueue(tsFirst);
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tsFirst = next;
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}
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tsLast = NULL;
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// Move free events to threadsafe pool
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while (allocatedTsEvents > 0 && eventPool)
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{
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Event *ev = eventPool;
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eventPool = ev->next;
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ev->next = eventTsPool;
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eventTsPool = ev;
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allocatedTsEvents--;
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}
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}
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void Advance()
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{
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ERROR_LOG(TIME, "Unimplemented function!");
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//int cyclesExecuted = slicelength - currentMIPS->downcount;
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//globalTimer += cyclesExecuted;
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//currentMIPS->downcount = slicelength;
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//if (Common::AtomicLoadAcquire(hasTsEvents))
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// MoveEvents();
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//ProcessFifoWaitEvents();
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//if (!first)
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//{
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// // WARN_LOG(TIMER, "WARNING - no events in queue. Setting currentMIPS->downcount to 10000");
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// currentMIPS->downcount += 10000;
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//}
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//else
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//{
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// slicelength = (int)(first->time - globalTimer);
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// if (slicelength > MAX_SLICE_LENGTH)
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// slicelength = MAX_SLICE_LENGTH;
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// currentMIPS->downcount = slicelength;
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//}
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//if (advanceCallback)
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// advanceCallback(cyclesExecuted);
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}
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void LogPendingEvents()
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{
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Event *ptr = first;
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while (ptr)
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{
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//INFO_LOG(TIMER, "PENDING: Now: %lld Pending: %lld Type: %d", globalTimer, ptr->time, ptr->type);
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ptr = ptr->next;
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}
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}
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void Idle(int maxIdle)
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{
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ERROR_LOG(TIME, "Unimplemented function!");
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//int cyclesDown = currentMIPS->downcount;
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//if (maxIdle != 0 && cyclesDown > maxIdle)
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// cyclesDown = maxIdle;
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//if (first && cyclesDown > 0)
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//{
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// int cyclesExecuted = slicelength - currentMIPS->downcount;
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// int cyclesNextEvent = (int) (first->time - globalTimer);
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// if (cyclesNextEvent < cyclesExecuted + cyclesDown)
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// {
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// cyclesDown = cyclesNextEvent - cyclesExecuted;
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// // Now, now... no time machines, please.
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// if (cyclesDown < 0)
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// cyclesDown = 0;
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// }
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//}
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//INFO_LOG(TIME, "Idle for %i cycles! (%f ms)", cyclesDown, cyclesDown / (float)(g_clock_rate_arm11 * 0.001f));
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//idledCycles += cyclesDown;
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//currentMIPS->downcount -= cyclesDown;
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//if (currentMIPS->downcount == 0)
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// currentMIPS->downcount = -1;
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}
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std::string GetScheduledEventsSummary()
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{
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Event *ptr = first;
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std::string text = "Scheduled events\n";
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text.reserve(1000);
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while (ptr)
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{
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unsigned int t = ptr->type;
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if (t >= event_types.size())
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PanicAlert("Invalid event type"); // %i", t);
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const char *name = event_types[ptr->type].name;
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if (!name)
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name = "[unknown]";
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char temp[512];
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sprintf(temp, "%s : %i %08x%08x\n", name, (int)ptr->time, (u32)(ptr->userdata >> 32), (u32)(ptr->userdata));
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text += temp;
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ptr = ptr->next;
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}
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return text;
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}
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void Event_DoState(PointerWrap &p, BaseEvent *ev)
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{
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p.Do(*ev);
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}
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void DoState(PointerWrap &p)
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{
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std::lock_guard<std::recursive_mutex> lk(externalEventSection);
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auto s = p.Section("CoreTiming", 1);
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if (!s)
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return;
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int n = (int)event_types.size();
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p.Do(n);
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// These (should) be filled in later by the modules.
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event_types.resize(n, EventType(AntiCrashCallback, "INVALID EVENT"));
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p.DoLinkedList<BaseEvent, GetNewEvent, FreeEvent, Event_DoState>(first, (Event **)NULL);
|
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p.DoLinkedList<BaseEvent, GetNewTsEvent, FreeTsEvent, Event_DoState>(tsFirst, &tsLast);
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|
|
|
p.Do(g_clock_rate_arm11);
|
|
p.Do(slicelength);
|
|
p.Do(globalTimer);
|
|
p.Do(idledCycles);
|
|
}
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|
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} // namespace
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