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authorbunnei <ericbunnie@gmail.com>2014-04-09 01:25:03 +0200
committerbunnei <ericbunnie@gmail.com>2014-04-09 01:25:03 +0200
commit63e46abdb8764bc97e91bae862c8d461e61b1965 (patch)
treee73f4aa25d7b4015a265e7bbfb6004dab7561027 /src/core/core_timing.cpp
parentfixed some license headers that I missed (diff)
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Diffstat (limited to 'src/core/core_timing.cpp')
-rw-r--r--src/core/core_timing.cpp623
1 files changed, 623 insertions, 0 deletions
diff --git a/src/core/core_timing.cpp b/src/core/core_timing.cpp
new file mode 100644
index 000000000..78bbaafe2
--- /dev/null
+++ b/src/core/core_timing.cpp
@@ -0,0 +1,623 @@
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include <vector>
+#include <cstdio>
+
+#include "msg_handler.h"
+#include "std_mutex.h"
+#include "atomic.h"
+#include "core_timing.h"
+#include "core.h"
+#include "chunk_file.h"
+
+int g_clock_rate_arm11 = 268123480;
+
+// is this really necessary?
+#define INITIAL_SLICE_LENGTH 20000
+#define MAX_SLICE_LENGTH 100000000
+
+namespace CoreTiming
+{
+
+struct EventType
+{
+ EventType() {}
+
+ EventType(TimedCallback cb, const char *n)
+ : callback(cb), name(n) {}
+
+ TimedCallback callback;
+ const char *name;
+};
+
+std::vector<EventType> event_types;
+
+struct BaseEvent
+{
+ s64 time;
+ u64 userdata;
+ int type;
+ // Event *next;
+};
+
+typedef LinkedListItem<BaseEvent> Event;
+
+Event *first;
+Event *tsFirst;
+Event *tsLast;
+
+// event pools
+Event *eventPool = 0;
+Event *eventTsPool = 0;
+int allocatedTsEvents = 0;
+// Optimization to skip MoveEvents when possible.
+volatile u32 hasTsEvents = false;
+
+// Downcount has been moved to currentMIPS, to save a couple of clocks in every ARM JIT block
+// as we can already reach that structure through a register.
+int slicelength;
+
+MEMORY_ALIGNED16(s64) globalTimer;
+s64 idledCycles;
+
+static std::recursive_mutex externalEventSection;
+
+// Warning: not included in save state.
+void(*advanceCallback)(int cyclesExecuted) = NULL;
+
+void SetClockFrequencyMHz(int cpuMhz)
+{
+ g_clock_rate_arm11 = cpuMhz * 1000000;
+ // TODO: Rescale times of scheduled events?
+}
+
+int GetClockFrequencyMHz()
+{
+ return g_clock_rate_arm11 / 1000000;
+}
+
+
+Event* GetNewEvent()
+{
+ if (!eventPool)
+ return new Event;
+
+ Event* ev = eventPool;
+ eventPool = ev->next;
+ return ev;
+}
+
+Event* GetNewTsEvent()
+{
+ allocatedTsEvents++;
+
+ if (!eventTsPool)
+ return new Event;
+
+ Event* ev = eventTsPool;
+ eventTsPool = ev->next;
+ return ev;
+}
+
+void FreeEvent(Event* ev)
+{
+ ev->next = eventPool;
+ eventPool = ev;
+}
+
+void FreeTsEvent(Event* ev)
+{
+ ev->next = eventTsPool;
+ eventTsPool = ev;
+ allocatedTsEvents--;
+}
+
+int RegisterEvent(const char *name, TimedCallback callback)
+{
+ event_types.push_back(EventType(callback, name));
+ return (int)event_types.size() - 1;
+}
+
+void AntiCrashCallback(u64 userdata, int cyclesLate)
+{
+ ERROR_LOG(TIME, "Savestate broken: an unregistered event was called.");
+ Core::Halt("invalid timing events");
+}
+
+void RestoreRegisterEvent(int event_type, const char *name, TimedCallback callback)
+{
+ if (event_type >= (int)event_types.size())
+ event_types.resize(event_type + 1, EventType(AntiCrashCallback, "INVALID EVENT"));
+
+ event_types[event_type] = EventType(callback, name);
+}
+
+void UnregisterAllEvents()
+{
+ if (first)
+ PanicAlert("Cannot unregister events with events pending");
+ event_types.clear();
+}
+
+void Init()
+{
+ //currentMIPS->downcount = INITIAL_SLICE_LENGTH;
+ //slicelength = INITIAL_SLICE_LENGTH;
+ globalTimer = 0;
+ idledCycles = 0;
+ hasTsEvents = 0;
+}
+
+void Shutdown()
+{
+ MoveEvents();
+ ClearPendingEvents();
+ UnregisterAllEvents();
+
+ while (eventPool)
+ {
+ Event *ev = eventPool;
+ eventPool = ev->next;
+ delete ev;
+ }
+
+ std::lock_guard<std::recursive_mutex> lk(externalEventSection);
+ while (eventTsPool)
+ {
+ Event *ev = eventTsPool;
+ eventTsPool = ev->next;
+ delete ev;
+ }
+}
+
+u64 GetTicks()
+{
+ ERROR_LOG(TIME, "Unimplemented function!");
+ return 0;
+ //return (u64)globalTimer + slicelength - currentMIPS->downcount;
+}
+
+u64 GetIdleTicks()
+{
+ return (u64)idledCycles;
+}
+
+
+// This is to be called when outside threads, such as the graphics thread, wants to
+// schedule things to be executed on the main thread.
+void ScheduleEvent_Threadsafe(s64 cyclesIntoFuture, int event_type, u64 userdata)
+{
+ std::lock_guard<std::recursive_mutex> lk(externalEventSection);
+ Event *ne = GetNewTsEvent();
+ ne->time = GetTicks() + cyclesIntoFuture;
+ ne->type = event_type;
+ ne->next = 0;
+ ne->userdata = userdata;
+ if (!tsFirst)
+ tsFirst = ne;
+ if (tsLast)
+ tsLast->next = ne;
+ tsLast = ne;
+
+ Common::AtomicStoreRelease(hasTsEvents, 1);
+}
+
+// Same as ScheduleEvent_Threadsafe(0, ...) EXCEPT if we are already on the CPU thread
+// in which case the event will get handled immediately, before returning.
+void ScheduleEvent_Threadsafe_Immediate(int event_type, u64 userdata)
+{
+ if (false) //Core::IsCPUThread())
+ {
+ std::lock_guard<std::recursive_mutex> lk(externalEventSection);
+ event_types[event_type].callback(userdata, 0);
+ }
+ else
+ ScheduleEvent_Threadsafe(0, event_type, userdata);
+}
+
+void ClearPendingEvents()
+{
+ while (first)
+ {
+ Event *e = first->next;
+ FreeEvent(first);
+ first = e;
+ }
+}
+
+void AddEventToQueue(Event* ne)
+{
+ Event* prev = NULL;
+ Event** pNext = &first;
+ for (;;)
+ {
+ Event*& next = *pNext;
+ if (!next || ne->time < next->time)
+ {
+ ne->next = next;
+ next = ne;
+ break;
+ }
+ prev = next;
+ pNext = &prev->next;
+ }
+}
+
+// This must be run ONLY from within the cpu thread
+// cyclesIntoFuture may be VERY inaccurate if called from anything else
+// than Advance
+void ScheduleEvent(s64 cyclesIntoFuture, int event_type, u64 userdata)
+{
+ Event *ne = GetNewEvent();
+ ne->userdata = userdata;
+ ne->type = event_type;
+ ne->time = GetTicks() + cyclesIntoFuture;
+ AddEventToQueue(ne);
+}
+
+// Returns cycles left in timer.
+s64 UnscheduleEvent(int event_type, u64 userdata)
+{
+ s64 result = 0;
+ if (!first)
+ return result;
+ while (first)
+ {
+ if (first->type == event_type && first->userdata == userdata)
+ {
+ result = first->time - globalTimer;
+
+ Event *next = first->next;
+ FreeEvent(first);
+ first = next;
+ }
+ else
+ {
+ break;
+ }
+ }
+ if (!first)
+ return result;
+ Event *prev = first;
+ Event *ptr = prev->next;
+ while (ptr)
+ {
+ if (ptr->type == event_type && ptr->userdata == userdata)
+ {
+ result = ptr->time - globalTimer;
+
+ prev->next = ptr->next;
+ FreeEvent(ptr);
+ ptr = prev->next;
+ }
+ else
+ {
+ prev = ptr;
+ ptr = ptr->next;
+ }
+ }
+
+ return result;
+}
+
+s64 UnscheduleThreadsafeEvent(int event_type, u64 userdata)
+{
+ s64 result = 0;
+ std::lock_guard<std::recursive_mutex> lk(externalEventSection);
+ if (!tsFirst)
+ return result;
+ while (tsFirst)
+ {
+ if (tsFirst->type == event_type && tsFirst->userdata == userdata)
+ {
+ result = tsFirst->time - globalTimer;
+
+ Event *next = tsFirst->next;
+ FreeTsEvent(tsFirst);
+ tsFirst = next;
+ }
+ else
+ {
+ break;
+ }
+ }
+ if (!tsFirst)
+ {
+ tsLast = NULL;
+ return result;
+ }
+
+ Event *prev = tsFirst;
+ Event *ptr = prev->next;
+ while (ptr)
+ {
+ if (ptr->type == event_type && ptr->userdata == userdata)
+ {
+ result = ptr->time - globalTimer;
+
+ prev->next = ptr->next;
+ if (ptr == tsLast)
+ tsLast = prev;
+ FreeTsEvent(ptr);
+ ptr = prev->next;
+ }
+ else
+ {
+ prev = ptr;
+ ptr = ptr->next;
+ }
+ }
+
+ return result;
+}
+
+// Warning: not included in save state.
+void RegisterAdvanceCallback(void(*callback)(int cyclesExecuted))
+{
+ advanceCallback = callback;
+}
+
+bool IsScheduled(int event_type)
+{
+ if (!first)
+ return false;
+ Event *e = first;
+ while (e) {
+ if (e->type == event_type)
+ return true;
+ e = e->next;
+ }
+ return false;
+}
+
+void RemoveEvent(int event_type)
+{
+ if (!first)
+ return;
+ while (first)
+ {
+ if (first->type == event_type)
+ {
+ Event *next = first->next;
+ FreeEvent(first);
+ first = next;
+ }
+ else
+ {
+ break;
+ }
+ }
+ if (!first)
+ return;
+ Event *prev = first;
+ Event *ptr = prev->next;
+ while (ptr)
+ {
+ if (ptr->type == event_type)
+ {
+ prev->next = ptr->next;
+ FreeEvent(ptr);
+ ptr = prev->next;
+ }
+ else
+ {
+ prev = ptr;
+ ptr = ptr->next;
+ }
+ }
+}
+
+void RemoveThreadsafeEvent(int event_type)
+{
+ std::lock_guard<std::recursive_mutex> lk(externalEventSection);
+ if (!tsFirst)
+ {
+ return;
+ }
+ while (tsFirst)
+ {
+ if (tsFirst->type == event_type)
+ {
+ Event *next = tsFirst->next;
+ FreeTsEvent(tsFirst);
+ tsFirst = next;
+ }
+ else
+ {
+ break;
+ }
+ }
+ if (!tsFirst)
+ {
+ tsLast = NULL;
+ return;
+ }
+ Event *prev = tsFirst;
+ Event *ptr = prev->next;
+ while (ptr)
+ {
+ if (ptr->type == event_type)
+ {
+ prev->next = ptr->next;
+ if (ptr == tsLast)
+ tsLast = prev;
+ FreeTsEvent(ptr);
+ ptr = prev->next;
+ }
+ else
+ {
+ prev = ptr;
+ ptr = ptr->next;
+ }
+ }
+}
+
+void RemoveAllEvents(int event_type)
+{
+ RemoveThreadsafeEvent(event_type);
+ RemoveEvent(event_type);
+}
+
+//This raise only the events required while the fifo is processing data
+void ProcessFifoWaitEvents()
+{
+ while (first)
+ {
+ if (first->time <= globalTimer)
+ {
+ // LOG(TIMER, "[Scheduler] %s (%lld, %lld) ",
+ // first->name ? first->name : "?", (u64)globalTimer, (u64)first->time);
+ Event* evt = first;
+ first = first->next;
+ event_types[evt->type].callback(evt->userdata, (int)(globalTimer - evt->time));
+ FreeEvent(evt);
+ }
+ else
+ {
+ break;
+ }
+ }
+}
+
+void MoveEvents()
+{
+ Common::AtomicStoreRelease(hasTsEvents, 0);
+
+ std::lock_guard<std::recursive_mutex> lk(externalEventSection);
+ // Move events from async queue into main queue
+ while (tsFirst)
+ {
+ Event *next = tsFirst->next;
+ AddEventToQueue(tsFirst);
+ tsFirst = next;
+ }
+ tsLast = NULL;
+
+ // Move free events to threadsafe pool
+ while (allocatedTsEvents > 0 && eventPool)
+ {
+ Event *ev = eventPool;
+ eventPool = ev->next;
+ ev->next = eventTsPool;
+ eventTsPool = ev;
+ allocatedTsEvents--;
+ }
+}
+
+void Advance()
+{
+ ERROR_LOG(TIME, "Unimplemented function!");
+ //int cyclesExecuted = slicelength - currentMIPS->downcount;
+ //globalTimer += cyclesExecuted;
+ //currentMIPS->downcount = slicelength;
+
+ //if (Common::AtomicLoadAcquire(hasTsEvents))
+ // MoveEvents();
+ //ProcessFifoWaitEvents();
+
+ //if (!first)
+ //{
+ // // WARN_LOG(TIMER, "WARNING - no events in queue. Setting currentMIPS->downcount to 10000");
+ // currentMIPS->downcount += 10000;
+ //}
+ //else
+ //{
+ // slicelength = (int)(first->time - globalTimer);
+ // if (slicelength > MAX_SLICE_LENGTH)
+ // slicelength = MAX_SLICE_LENGTH;
+ // currentMIPS->downcount = slicelength;
+ //}
+ //if (advanceCallback)
+ // advanceCallback(cyclesExecuted);
+}
+
+void LogPendingEvents()
+{
+ Event *ptr = first;
+ while (ptr)
+ {
+ //INFO_LOG(TIMER, "PENDING: Now: %lld Pending: %lld Type: %d", globalTimer, ptr->time, ptr->type);
+ ptr = ptr->next;
+ }
+}
+
+void Idle(int maxIdle)
+{
+ ERROR_LOG(TIME, "Unimplemented function!");
+ //int cyclesDown = currentMIPS->downcount;
+ //if (maxIdle != 0 && cyclesDown > maxIdle)
+ // cyclesDown = maxIdle;
+
+ //if (first && cyclesDown > 0)
+ //{
+ // int cyclesExecuted = slicelength - currentMIPS->downcount;
+ // int cyclesNextEvent = (int) (first->time - globalTimer);
+
+ // if (cyclesNextEvent < cyclesExecuted + cyclesDown)
+ // {
+ // cyclesDown = cyclesNextEvent - cyclesExecuted;
+ // // Now, now... no time machines, please.
+ // if (cyclesDown < 0)
+ // cyclesDown = 0;
+ // }
+ //}
+
+ //INFO_LOG(TIME, "Idle for %i cycles! (%f ms)", cyclesDown, cyclesDown / (float)(g_clock_rate_arm11 * 0.001f));
+
+ //idledCycles += cyclesDown;
+ //currentMIPS->downcount -= cyclesDown;
+ //if (currentMIPS->downcount == 0)
+ // currentMIPS->downcount = -1;
+}
+
+std::string GetScheduledEventsSummary()
+{
+ Event *ptr = first;
+ std::string text = "Scheduled events\n";
+ text.reserve(1000);
+ while (ptr)
+ {
+ unsigned int t = ptr->type;
+ if (t >= event_types.size())
+ PanicAlert("Invalid event type"); // %i", t);
+ const char *name = event_types[ptr->type].name;
+ if (!name)
+ name = "[unknown]";
+ char temp[512];
+ sprintf(temp, "%s : %i %08x%08x\n", name, (int)ptr->time, (u32)(ptr->userdata >> 32), (u32)(ptr->userdata));
+ text += temp;
+ ptr = ptr->next;
+ }
+ return text;
+}
+
+void Event_DoState(PointerWrap &p, BaseEvent *ev)
+{
+ p.Do(*ev);
+}
+
+void DoState(PointerWrap &p)
+{
+ std::lock_guard<std::recursive_mutex> lk(externalEventSection);
+
+ auto s = p.Section("CoreTiming", 1);
+ if (!s)
+ return;
+
+ int n = (int)event_types.size();
+ p.Do(n);
+ // These (should) be filled in later by the modules.
+ event_types.resize(n, EventType(AntiCrashCallback, "INVALID EVENT"));
+
+ p.DoLinkedList<BaseEvent, GetNewEvent, FreeEvent, Event_DoState>(first, (Event **)NULL);
+ p.DoLinkedList<BaseEvent, GetNewTsEvent, FreeTsEvent, Event_DoState>(tsFirst, &tsLast);
+
+ p.Do(g_clock_rate_arm11);
+ p.Do(slicelength);
+ p.Do(globalTimer);
+ p.Do(idledCycles);
+}
+
+} // namespace