public EventSource(Controller controller, string sourceName, UIntPtr storageHandle)
{
SourceName = sourceName;
Storage = EventingStorage.CreateStorageFromHandle(storageHandle);
ControlFlags = ENABLE_ALL_MASK;
HostController = controller;
}
// Storage registration routines
public bool RegisterStorage(EventingStorage Storage)
{
Lock.AcquireMutex();
bool success = RegisterStorageImpl(Storage.GetHandle());
Lock.ReleaseMutex();
return(success);
}
public void UnRegisterStorage(EventingStorage Storage)
{
if (!Controller.Finalized)
{
Lock.AcquireMutex();
UnRegisterStorageImpl(Storage.GetHandle());
Lock.ReleaseMutex();
}
}
public static ControllerLogger Create(string sourceName, EventingStorage storage)
{
ControllerLogger Logger = new ControllerLogger(sourceName,
storage,
CAPTURE_STACK_TRACE | ENABLE_ALL_MASK);
if (Logger != null)
{
Logger.Register();
}
return(Logger);
}
public EventSource(string sourceName, EventingStorage storage, uint controlFlags)
{
SourceName = sourceName;
Storage = storage;
ControlFlags = controlFlags;
if (storage != null)
{
HostController = storage.GetController();
}
else
{
HostController = Controller.GetLocalController();
}
}
internal override void Initialize()
{
if (KernelControllerObject != null)
{
// Already initialized
return;
}
base.Initialize();
ProcessContext.Initialize();
GeneralPurposeStorage = EventingStorage.CreateLocalStorage(QualityOfService.RecyclableEvents,
BUFFER_EXPANSION_SIZE);
KernelControllerObject = this;
}
public bool Initialize(EventingStorage storage,
bool forward)
{
if (EntryBuffer == null)
{
EntryBuffer = new QueryBuffer(256);
if ((EntryBuffer == null) || (EntryBuffer.GetBuffer() == null))
{
return(false);
}
}
// Cleanup for the previous states.
if (QueryHandle != 0)
{
QueryStorage.DeleteQueryView(QueryHandle);
QueryHandle = 0;
QueryStorage = null;
}
// Initialize the new query states
QueryStorage = storage;
if (QueryStorage == null)
{
return(false);
}
QueryHandle = QueryStorage.CreateQueryView(forward);
if (QueryHandle == 0)
{
QueryStorage = null;
return(false);
}
return(true);
}
public static SystemAllocationLogger Create(string sourceName)
{
EventingStorage storage = EventingStorage.CreateLocalStorage(QualityOfService.RecyclableEvents,
DefaultLogSize);
if (storage == null)
{
return(null);
}
SystemAllocationLogger Logger = new SystemAllocationLogger(sourceName,
storage,
ENABLE_ALL_MASK);
if (Logger != null)
{
Logger.Register();
}
return(Logger);
}
public static ProcessorLogger Create(string sourceName)
{
EventingStorage storage = EventingStorage.CreateLocalStorage(QualityOfService.RecyclableEvents,
DefaultProcessorLogSize);
if (storage == null)
{
return(null);
}
ProcessorLogger Logger = new ProcessorLogger(sourceName,
storage,
CAPTURE_STACK_TRACE | ENABLE_ALL_MASK);
if (Logger != null)
{
Logger.Register();
}
return(Logger);
}
public static SamplingProfiler Create(string sourceName, int maxStackSize, uint storageSize)
{
EventingStorage storage = EventingStorage.CreateLocalStorage(QualityOfService.RecyclableEvents,
storageSize);
if (storage == null)
{
return(null);
}
SamplingProfiler Logger = new SamplingProfiler(sourceName,
maxStackSize,
storage,
ENABLE_ALL_MASK);
if (Logger != null)
{
Logger.Register();
}
return(Logger);
}
SystemAllocationLogger(string sourceName, EventingStorage storage, uint controlFlags)
: base(sourceName, storage, controlFlags)
{
}
SamplingProfiler(string sourceName, int maxStackSize, EventingStorage storage, uint controlFlags)
: base(sourceName, storage, controlFlags)
{
MaxStackSize = maxStackSize;
StackTrace = new UIntPtr[maxStackSize];
}
ProcessorLogger(string sourceName, EventingStorage storage, uint controlFlags)
: base(sourceName, storage, controlFlags)
{
}
// Public methods
// Private methods
internal override void Initialize()
{
base.Initialize();
EventTable = new Hashtable();
SourcesLookupTable = new Hashtable();
SourcesHandleTable = new Hashtable();
UIntPtr RepositoryStorageHandle = FetchLocalStorage();
if (RepositoryStorageHandle != 0)
{
TypesRepository = EventingStorage.CreateStorageFromHandle(RepositoryStorageHandle);
// Fetch now the existing source list created before initializing the controller
int currentSize = 20;
UIntPtr [] sourceArray = new UIntPtr[currentSize];
if (sourceArray != null)
{
unsafe
{
fixed(UIntPtr *ptr = sourceArray)
{
int sourceCount = QuerySystemSources(ptr, (ushort)currentSize);
while (sourceCount > currentSize)
{
sourceArray = new UIntPtr[sourceCount];
sourceCount = QuerySystemSources(ptr, (ushort)currentSize);
}
for (int i = 0; i < sourceCount; i++)
{
UIntPtr sourceHandle = sourceArray[i];
UIntPtr storageHandle = 0;
string bufferName = "";
if (GetNativeSourceName(sourceHandle, ref storageHandle, ref bufferName))
{
EventSource source = new EventSource(this, bufferName, storageHandle);
if (source != null)
{
source.Register();
}
}
}
}
}
}
}
else
{
TypesRepository = EventingStorage.CreateLocalStorage(QualityOfService.PermanentEvents,
BUFFER_EXPANSION_SIZE);
SetRepositoryStorage(TypesRepository.GetHandle());
}
string sourceName = "ControllerLog";
#if SINGULARITY_KERNEL
sourceName = sourceName + "{kernel}";
#else
unsafe {
int argMaxLen = ProcessService.GetStartupArg(0, null, 0);
char[] argArray = new char [argMaxLen];
fixed(char *argptr = &argArray[0])
{
int len = ProcessService.GetStartupArg(0,
argptr,
argArray.Length);
sourceName = sourceName + "{" + String.StringCTOR(argptr, 0, len) + "}";
sourceName = sourceName + "(PID:" + ProcessService.GetCurrentProcessId() + ")";
}
}
#endif
InternalSource = ControllerLogger.Create(sourceName, TypesRepository);
}
public virtual void EnumerateActiveSources(QuerySourceDelegate sourceDelegate,
ActiveSourceEntryDelegate activeEntryDelegate,
QueryEntryDelegate entryDelegate,
ushort maxEntrySize,
ref EnumerationContext context)
{
if (maxEntrySize == 0)
{
maxEntrySize = DefaultEntrySize;
}
// Create a temporary buffer to store the temporary query information
QueryBuffer entryBuffer = new QueryBuffer(maxEntrySize);
if ((entryBuffer == null) || (sourceDelegate == null))
{
return;
}
// Prepare to query the controller for the source list. We just pick up an number
// that would represent the limit for most common cases as the initial guess.
int currentSize = 100;
UIntPtr [] sourceArray = new UIntPtr[currentSize];
if (sourceArray != null)
{
// Query the controller for the actual source list
int sourceCount = QuerySourcesList(sourceArray, currentSize);
//
// The array was not large enough, attempt again with the new size
while (sourceCount > currentSize)
{
sourceArray = new UIntPtr[sourceCount];
sourceCount = QuerySourcesList(sourceArray, currentSize);
}
//
// We sucessfully received an array of entries. We walk them and build the
// required information
//
for (int i = 0; i < sourceCount; i++)
{
UIntPtr sourceHandle = sourceArray[i];
UIntPtr storageHandle = 0;
UIntPtr eventType = 0;
UInt16 count = 0;
string bufferName = "";
if (GetSourceInformation(sourceHandle,
ref storageHandle,
ref eventType,
ref count,
ref bufferName))
{
if (storageHandle == 0)
{
//
// This is an active source. The eventing has no information
// about the storage, it has instead information about the
// types of events handled by this source
//
EventDescriptor descriptor = QuerySession.GetEventDescriptor(this,
eventType);
if (descriptor != null)
{
// The source is valid, call the delegate with the appropriate
// arguments filled in
// TODO: Also retrieve the control flags status
if (!sourceDelegate(sourceHandle,
storageHandle,
eventType,
count,
bufferName,
descriptor,
ref context))
{
break;
}
if (entryDelegate != null)
{
// The caller also provided an entry delegate. We need in that
// case to also enumerate all entries from the active source
for (int index = 0; index < count; index++)
{
if (!QueryActiveEntry(sourceHandle,
index,
ref entryBuffer))
{
break;
}
activeEntryDelegate(sourceHandle,
index,
descriptor,
entryBuffer,
ref context);
}
}
}
}
else
{
// This source has an associated storage. Enumerate the entries from
// the storage
// TODO: we might also want to filter the sources inside the storage
// since multiple sources can share the same storage
if (!sourceDelegate(sourceHandle,
storageHandle,
eventType,
count,
bufferName,
null,
ref context))
{
break;
}
EventingStorage storage = OpenStorage(storageHandle);
if (storage != null)
{
// Instantiate a query session for the storage and
// enumerate the entries passing the provided delegate
QuerySession query = new QuerySession();
if ((query != null) && (context != null) &&
query.Initialize(storage, false))
{
query.EnumerateEntries(entryDelegate, ref context);
}
}
}
}
}
}
}
