public KernelContext(
ITickSource tickSource,
Switch device,
MemoryBlock memory,
MemorySize memorySize,
MemoryArrange memoryArrange)
{
TickSource = tickSource;
Device = device;
Memory = memory;
Running = true;
Syscall = new Syscall(this);
SyscallHandler = new SyscallHandler(this);
ResourceLimit = new KResourceLimit(this);
KernelInit.InitializeResourceLimit(ResourceLimit, memorySize);
MemoryManager = new KMemoryManager(memorySize, memoryArrange);
LargeMemoryBlockSlabManager = new KMemoryBlockSlabManager(KernelConstants.MemoryBlockAllocatorSize * 2);
SmallMemoryBlockSlabManager = new KMemoryBlockSlabManager(KernelConstants.MemoryBlockAllocatorSize);
UserSlabHeapPages = new KSlabHeap(
KernelConstants.UserSlabHeapBase,
KernelConstants.UserSlabHeapItemSize,
KernelConstants.UserSlabHeapSize);
memory.Commit(KernelConstants.UserSlabHeapBase - DramMemoryMap.DramBase, KernelConstants.UserSlabHeapSize);
CriticalSection = new KCriticalSection(this);
Schedulers = new KScheduler[KScheduler.CpuCoresCount];
PriorityQueue = new KPriorityQueue();
TimeManager = new KTimeManager(this);
Synchronization = new KSynchronization(this);
ContextIdManager = new KContextIdManager();
for (int core = 0; core < KScheduler.CpuCoresCount; core++)
{
Schedulers[core] = new KScheduler(this, core);
}
StartPreemptionThread();
KernelInitialized = true;
Processes = new ConcurrentDictionary <ulong, KProcess>();
AutoObjectNames = new ConcurrentDictionary <string, KAutoObject>();
_kipId = KernelConstants.InitialKipId;
_processId = KernelConstants.InitialProcessId;
}
public KernelContext(Switch device, MemoryBlock memory)
{
Device = device;
Memory = memory;
Syscall = new Syscall(device, this);
SyscallHandler = new SyscallHandler(this);
ThreadCounter = new CountdownEvent(1);
ResourceLimit = new KResourceLimit(this);
KernelInit.InitializeResourceLimit(ResourceLimit);
MemoryRegions = KernelInit.GetMemoryRegions();
LargeMemoryBlockAllocator = new KMemoryBlockAllocator(KernelConstants.MemoryBlockAllocatorSize * 2);
SmallMemoryBlockAllocator = new KMemoryBlockAllocator(KernelConstants.MemoryBlockAllocatorSize);
UserSlabHeapPages = new KSlabHeap(
KernelConstants.UserSlabHeapBase,
KernelConstants.UserSlabHeapItemSize,
KernelConstants.UserSlabHeapSize);
CriticalSection = new KCriticalSection(this);
Scheduler = new KScheduler(this);
TimeManager = new KTimeManager();
Synchronization = new KSynchronization(this);
ContextIdManager = new KContextIdManager();
Scheduler.StartAutoPreemptionThread();
KernelInitialized = true;
Processes = new ConcurrentDictionary <long, KProcess>();
AutoObjectNames = new ConcurrentDictionary <string, KAutoObject>();
_kipId = KernelConstants.InitialKipId;
_processId = KernelConstants.InitialProcessId;
}
public bool Reserve(LimitableResource Resource, long Amount, long Timeout)
{
long EndTimePoint = KTimeManager.ConvertNanosecondsToMilliseconds(Timeout);
EndTimePoint += PerformanceCounter.ElapsedMilliseconds;
bool Success = false;
int Index = GetIndex(Resource);
lock (LockObj)
{
long NewCurrent = Current[Index] + Amount;
while (NewCurrent > Limit[Index] && Available[Index] + Amount <= Limit[Index])
{
WaitingThreadsCount++;
KConditionVariable.Wait(System, WaitingThreads, LockObj, Timeout);
WaitingThreadsCount--;
NewCurrent = Current[Index] + Amount;
if (Timeout >= 0 && PerformanceCounter.ElapsedMilliseconds > EndTimePoint)
{
break;
}
}
if (NewCurrent <= Limit[Index])
{
Current[Index] = NewCurrent;
Success = true;
}
}
return(Success);
}
public bool Reserve(LimitableResource resource, long amount, long timeout)
{
long endTimePoint = KTimeManager.ConvertNanosecondsToMilliseconds(timeout);
endTimePoint += PerformanceCounter.ElapsedMilliseconds;
bool success = false;
int index = GetIndex(resource);
lock (_lockObj)
{
long newCurrent = _current[index] + amount;
while (newCurrent > _limit[index] && _available[index] + amount <= _limit[index])
{
_waitingThreadsCount++;
KConditionVariable.Wait(_system, _waitingThreads, _lockObj, timeout);
_waitingThreadsCount--;
newCurrent = _current[index] + amount;
if (timeout >= 0 && PerformanceCounter.ElapsedMilliseconds > endTimePoint)
{
break;
}
}
if (newCurrent <= _limit[index])
{
_current[index] = newCurrent;
success = true;
}
}
return(success);
}
private KernelResult GetInfo(uint id, int handle, long subId, out long value)
{
value = 0;
switch (id)
{
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 12:
case 13:
case 14:
case 15:
case 16:
case 17:
case 18:
case 20:
case 21:
case 22:
{
if (subId != 0)
{
return(KernelResult.InvalidCombination);
}
KProcess currentProcess = _system.Scheduler.GetCurrentProcess();
KProcess process = currentProcess.HandleTable.GetKProcess(handle);
if (process == null)
{
return(KernelResult.InvalidHandle);
}
switch (id)
{
case 0: value = process.Capabilities.AllowedCpuCoresMask; break;
case 1: value = process.Capabilities.AllowedThreadPriosMask; break;
case 2: value = (long)process.MemoryManager.AliasRegionStart; break;
case 3: value = (long)(process.MemoryManager.AliasRegionEnd -
process.MemoryManager.AliasRegionStart); break;
case 4: value = (long)process.MemoryManager.HeapRegionStart; break;
case 5: value = (long)(process.MemoryManager.HeapRegionEnd -
process.MemoryManager.HeapRegionStart); break;
case 6: value = (long)process.GetMemoryCapacity(); break;
case 7: value = (long)process.GetMemoryUsage(); break;
case 12: value = (long)process.MemoryManager.GetAddrSpaceBaseAddr(); break;
case 13: value = (long)process.MemoryManager.GetAddrSpaceSize(); break;
case 14: value = (long)process.MemoryManager.StackRegionStart; break;
case 15: value = (long)(process.MemoryManager.StackRegionEnd -
process.MemoryManager.StackRegionStart); break;
case 16: value = (long)process.PersonalMmHeapPagesCount * KMemoryManager.PageSize; break;
case 17:
if (process.PersonalMmHeapPagesCount != 0)
{
value = process.MemoryManager.GetMmUsedPages() * KMemoryManager.PageSize;
}
break;
case 18: value = process.TitleId; break;
case 20: value = (long)process.UserExceptionContextAddress; break;
case 21: value = (long)process.GetMemoryCapacityWithoutPersonalMmHeap(); break;
case 22: value = (long)process.GetMemoryUsageWithoutPersonalMmHeap(); break;
}
break;
}
case 8:
{
if (handle != 0)
{
return(KernelResult.InvalidHandle);
}
if (subId != 0)
{
return(KernelResult.InvalidCombination);
}
value = _system.Scheduler.GetCurrentProcess().Debug ? 1 : 0;
break;
}
case 9:
{
if (handle != 0)
{
return(KernelResult.InvalidHandle);
}
if (subId != 0)
{
return(KernelResult.InvalidCombination);
}
KProcess currentProcess = _system.Scheduler.GetCurrentProcess();
if (currentProcess.ResourceLimit != null)
{
KHandleTable handleTable = currentProcess.HandleTable;
KResourceLimit resourceLimit = currentProcess.ResourceLimit;
KernelResult result = handleTable.GenerateHandle(resourceLimit, out int resLimHandle);
if (result != KernelResult.Success)
{
return(result);
}
value = (uint)resLimHandle;
}
break;
}
case 10:
{
if (handle != 0)
{
return(KernelResult.InvalidHandle);
}
int currentCore = _system.Scheduler.GetCurrentThread().CurrentCore;
if (subId != -1 && subId != currentCore)
{
return(KernelResult.InvalidCombination);
}
value = _system.Scheduler.CoreContexts[currentCore].TotalIdleTimeTicks;
break;
}
case 11:
{
if (handle != 0)
{
return(KernelResult.InvalidHandle);
}
if ((ulong)subId > 3)
{
return(KernelResult.InvalidCombination);
}
KProcess currentProcess = _system.Scheduler.GetCurrentProcess();
value = currentProcess.RandomEntropy[subId];
break;
}
case 0xf0000002u:
{
if (subId < -1 || subId > 3)
{
return(KernelResult.InvalidCombination);
}
KThread thread = _system.Scheduler.GetCurrentProcess().HandleTable.GetKThread(handle);
if (thread == null)
{
return(KernelResult.InvalidHandle);
}
KThread currentThread = _system.Scheduler.GetCurrentThread();
int currentCore = currentThread.CurrentCore;
if (subId != -1 && subId != currentCore)
{
return(KernelResult.Success);
}
KCoreContext coreContext = _system.Scheduler.CoreContexts[currentCore];
long timeDelta = PerformanceCounter.ElapsedMilliseconds - coreContext.LastContextSwitchTime;
if (subId != -1)
{
value = KTimeManager.ConvertMillisecondsToTicks(timeDelta);
}
else
{
long totalTimeRunning = thread.TotalTimeRunning;
if (thread == currentThread)
{
totalTimeRunning += timeDelta;
}
value = KTimeManager.ConvertMillisecondsToTicks(totalTimeRunning);
}
break;
}
default: return(KernelResult.InvalidEnumValue);
}
return(KernelResult.Success);
}
public bool Reserve(LimitableResource Resource, long Amount)
{
return(Reserve(Resource, Amount, KTimeManager.ConvertMillisecondsToNanoseconds(Time10SecondsMs)));
}
private KernelResult GetInfo(uint Id, int Handle, long SubId, out long Value)
{
Value = 0;
switch (Id)
{
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 12:
case 13:
case 14:
case 15:
case 16:
case 17:
case 18:
case 20:
case 21:
case 22:
{
if (SubId != 0)
{
return(KernelResult.InvalidCombination);
}
KProcess CurrentProcess = System.Scheduler.GetCurrentProcess();
KProcess Process = CurrentProcess.HandleTable.GetKProcess(Handle);
if (Process == null)
{
return(KernelResult.InvalidHandle);
}
switch (Id)
{
case 0: Value = Process.Capabilities.AllowedCpuCoresMask; break;
case 1: Value = Process.Capabilities.AllowedThreadPriosMask; break;
case 2: Value = (long)Process.MemoryManager.AliasRegionStart; break;
case 3: Value = (long)(Process.MemoryManager.AliasRegionEnd -
Process.MemoryManager.AliasRegionStart); break;
case 4: Value = (long)Process.MemoryManager.HeapRegionStart; break;
case 5: Value = (long)(Process.MemoryManager.HeapRegionEnd -
Process.MemoryManager.HeapRegionStart); break;
case 6: Value = (long)Process.GetMemoryCapacity(); break;
case 7: Value = (long)Process.GetMemoryUsage(); break;
case 12: Value = (long)Process.MemoryManager.GetAddrSpaceBaseAddr(); break;
case 13: Value = (long)Process.MemoryManager.GetAddrSpaceSize(); break;
case 14: Value = (long)Process.MemoryManager.StackRegionStart; break;
case 15: Value = (long)(Process.MemoryManager.StackRegionEnd -
Process.MemoryManager.StackRegionStart); break;
case 16: Value = (long)Process.PersonalMmHeapPagesCount * KMemoryManager.PageSize; break;
case 17:
if (Process.PersonalMmHeapPagesCount != 0)
{
Value = Process.MemoryManager.GetMmUsedPages() * KMemoryManager.PageSize;
}
break;
case 18: Value = Process.TitleId; break;
case 20: Value = (long)Process.UserExceptionContextAddress; break;
case 21: Value = (long)Process.GetMemoryCapacityWithoutPersonalMmHeap(); break;
case 22: Value = (long)Process.GetMemoryUsageWithoutPersonalMmHeap(); break;
}
break;
}
case 8:
{
if (Handle != 0)
{
return(KernelResult.InvalidHandle);
}
if (SubId != 0)
{
return(KernelResult.InvalidCombination);
}
Value = System.Scheduler.GetCurrentProcess().Debug ? 1 : 0;
break;
}
case 9:
{
if (Handle != 0)
{
return(KernelResult.InvalidHandle);
}
if (SubId != 0)
{
return(KernelResult.InvalidCombination);
}
KProcess CurrentProcess = System.Scheduler.GetCurrentProcess();
if (CurrentProcess.ResourceLimit != null)
{
KHandleTable HandleTable = CurrentProcess.HandleTable;
KResourceLimit ResourceLimit = CurrentProcess.ResourceLimit;
KernelResult Result = HandleTable.GenerateHandle(ResourceLimit, out int ResLimHandle);
if (Result != KernelResult.Success)
{
return(Result);
}
Value = (uint)ResLimHandle;
}
break;
}
case 10:
{
if (Handle != 0)
{
return(KernelResult.InvalidHandle);
}
int CurrentCore = System.Scheduler.GetCurrentThread().CurrentCore;
if (SubId != -1 && SubId != CurrentCore)
{
return(KernelResult.InvalidCombination);
}
Value = System.Scheduler.CoreContexts[CurrentCore].TotalIdleTimeTicks;
break;
}
case 11:
{
if (Handle != 0)
{
return(KernelResult.InvalidHandle);
}
if ((ulong)SubId > 3)
{
return(KernelResult.InvalidCombination);
}
KProcess CurrentProcess = System.Scheduler.GetCurrentProcess();
Value = CurrentProcess.RandomEntropy[SubId];
break;
}
case 0xf0000002u:
{
if (SubId < -1 || SubId > 3)
{
return(KernelResult.InvalidCombination);
}
KThread Thread = System.Scheduler.GetCurrentProcess().HandleTable.GetKThread(Handle);
if (Thread == null)
{
return(KernelResult.InvalidHandle);
}
KThread CurrentThread = System.Scheduler.GetCurrentThread();
int CurrentCore = CurrentThread.CurrentCore;
if (SubId != -1 && SubId != CurrentCore)
{
return(KernelResult.Success);
}
KCoreContext CoreContext = System.Scheduler.CoreContexts[CurrentCore];
long TimeDelta = PerformanceCounter.ElapsedMilliseconds - CoreContext.LastContextSwitchTime;
if (SubId != -1)
{
Value = KTimeManager.ConvertMillisecondsToTicks(TimeDelta);
}
else
{
long TotalTimeRunning = Thread.TotalTimeRunning;
if (Thread == CurrentThread)
{
TotalTimeRunning += TimeDelta;
}
Value = KTimeManager.ConvertMillisecondsToTicks(TotalTimeRunning);
}
break;
}
default: return(KernelResult.InvalidEnumValue);
}
return(KernelResult.Success);
}
private KernelResult CreateThread(
ulong entrypoint,
ulong argsPtr,
ulong stackTop,
int priority,
int cpuCore,
out int handle)
{
handle = 0;
KProcess currentProcess = _system.Scheduler.GetCurrentProcess();
if (cpuCore == -2)
{
cpuCore = currentProcess.DefaultCpuCore;
}
if ((uint)cpuCore >= KScheduler.CpuCoresCount || !currentProcess.IsCpuCoreAllowed(cpuCore))
{
return(KernelResult.InvalidCpuCore);
}
if ((uint)priority >= KScheduler.PrioritiesCount || !currentProcess.IsPriorityAllowed(priority))
{
return(KernelResult.InvalidPriority);
}
long timeout = KTimeManager.ConvertMillisecondsToNanoseconds(100);
if (currentProcess.ResourceLimit != null &&
!currentProcess.ResourceLimit.Reserve(LimitableResource.Thread, 1, timeout))
{
return(KernelResult.ResLimitExceeded);
}
KThread thread = new KThread(_system);
KernelResult result = currentProcess.InitializeThread(
thread,
entrypoint,
argsPtr,
stackTop,
priority,
cpuCore);
if (result != KernelResult.Success)
{
currentProcess.ResourceLimit?.Release(LimitableResource.Thread, 1);
return(result);
}
result = _process.HandleTable.GenerateHandle(thread, out handle);
if (result != KernelResult.Success)
{
thread.Terminate();
currentProcess.ResourceLimit?.Release(LimitableResource.Thread, 1);
}
return(result);
}
private KernelResult CreateThread(
ulong Entrypoint,
ulong ArgsPtr,
ulong StackTop,
int Priority,
int CpuCore,
out int Handle)
{
Handle = 0;
KProcess CurrentProcess = System.Scheduler.GetCurrentProcess();
if (CpuCore == -2)
{
CpuCore = CurrentProcess.DefaultCpuCore;
}
if ((uint)CpuCore >= KScheduler.CpuCoresCount || !CurrentProcess.IsCpuCoreAllowed(CpuCore))
{
return(KernelResult.InvalidCpuCore);
}
if ((uint)Priority >= KScheduler.PrioritiesCount || !CurrentProcess.IsPriorityAllowed(Priority))
{
return(KernelResult.InvalidPriority);
}
long Timeout = KTimeManager.ConvertMillisecondsToNanoseconds(100);
if (CurrentProcess.ResourceLimit != null &&
!CurrentProcess.ResourceLimit.Reserve(LimitableResource.Thread, 1, Timeout))
{
return(KernelResult.ResLimitExceeded);
}
KThread Thread = new KThread(System);
KernelResult Result = CurrentProcess.InitializeThread(
Thread,
Entrypoint,
ArgsPtr,
StackTop,
Priority,
CpuCore);
if (Result != KernelResult.Success)
{
CurrentProcess.ResourceLimit?.Release(LimitableResource.Thread, 1);
return(Result);
}
Result = Process.HandleTable.GenerateHandle(Thread, out Handle);
if (Result != KernelResult.Success)
{
Thread.Terminate();
CurrentProcess.ResourceLimit?.Release(LimitableResource.Thread, 1);
}
return(Result);
}