Connection diagnostics for packet frequency, throughput and receive quality This class provides connection quality diagnostics based on packet reception statistics. More...

#include <pidiagnostics.h>

Inheritance diagram for PIDiagnostics:

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Classes
struct	State
	Snapshot of current counters and derived statistics. More...

Public Types
enum	Quality
	Receive quality estimated from recent packet history.

Public Member Functions
	PIDiagnostics (bool start_=true)
	Constructs diagnostics and optionally starts periodic evaluation immediately.
virtual	~PIDiagnostics ()
	Stops diagnostics updates.
PIDiagnostics::State	state () const
	Returns a thread-safe snapshot of current diagnostics state.
PISystemTime	disconnectTimeout () const
	Returns the disconnect timeout and averaging window.
void	setDisconnectTimeout (float s) DEPRECATEDM("use setDisconnectTimeout(PISystemTime)")
	Sets the disconnect timeout in seconds.
void	setDisconnectTimeout (PISystemTime tm)
	Sets the disconnect timeout and averaging window.
PIDiagnostics::Quality	quality () const
	Returns current receive quality.
PIString	receiveSpeed () const
	Returns formatted receive throughput string.
PIString	sendSpeed () const
	Returns formatted send throughput string.
Public Member Functions inherited from PITimer
	PITimer ()
	Constructs a timer without a tick callback.
	PITimer (std::function< void(int)> func)
	Constructs a timer with a callback that receives the delimiter value.
	PITimer (std::function< void()> func)
	Constructs a timer with a callback that ignores the delimiter value.
virtual	~PITimer ()
	Destroys the timer and stops its internal worker thread.
PISystemTime	interval () const
	Returns the configured base interval between main ticks.
void	setInterval (PISystemTime interval)
	Sets the base interval. If the timer is running, restarts it with the new value.
bool	isRunning () const
	Returns whether the timer thread is currently running.
bool	isStopping () const
	Returns whether stop has been requested and shutdown is still in progress.
bool	waitForFinish (PISystemTime timeout={})
	Waits until the timer finishes. Returns false if the timeout expires first.
bool	start (PISystemTime interval)
	Sets the base interval and starts the timer.
bool	start (PISystemTime interval, std::function< void()> func)
	Sets the base interval and tick callback, then starts the timer.
bool	start (double interval_ms) DEPRECATEDM("use start(PISystemTime)")
	Deprecated overload of start() that accepts milliseconds.
void	stopAndWait (int timeout_ms)
	Deprecated overload of stopAndWait() that accepts milliseconds.
void	stopAndWait (PISystemTime timeout={})
	Requests stop and waits for the worker thread to finish.
void	setSlot (std::function< void()> func)
	Sets a tick callback that ignores the delimiter value.
void	setSlot (std::function< void(int)> func)
	Sets a tick callback that receives the current delimiter value.
void	needLockRun (bool need)
	Enables locking of the internal mutex around tick processing.
bool	isCallQueuedEvents () const
	Returns whether the timer drains queued delivery for itself as performer on each main tick. By default true.
void	setCallQueuedEvents (bool yes)
	Enables or disables queued-delivery draining through maybeCallQueuedEvents() on each main tick.
void	addDelimiter (int delim, std::function< void(int)> func=nullptr)
	Adds a frequency delimiter that invokes func every delim main ticks.
void	addDelimiter (int delim, std::function< void()> func)
	Adds a delimiter with a callback that ignores the delimiter value.
void	addDelimiter (int delim, std::function< void(void *)> slot)
	Adds a delimiter with a pointer-based callback signature.
void	removeDelimiter (int delim)
	Removes all delimiters with value delim.
bool	start ()
	Starts the timer with the current interval().
bool	restart ()
	Stops the timer, then starts it again with the current interval().
void	stop ()
	Requests stop and wakes the timer thread, but does not wait for completion.
void	clearDelimiters ()
	Remove all frequency delimiters.
void	lock ()
	Locks the internal timer mutex.
void	unlock ()
	Unlocks the internal timer mutex.
void	tickEvent (int delimiter)
	Raised on each timer tick and on configured delimiter ticks.
Public Member Functions inherited from PIObject
	PIObject (const PIString &name=PIString())
	Constructs an object and initializes its `name` property.
virtual	~PIObject ()
	Destroys the object, raises deleted() and disconnects it from the event graph.
PIString	name () const
	Returns the `name` property of this object.
virtual const char *	className () const
	Returns the registered class name of this object.
virtual uint	classNameID () const
	Returns the hash of className().
virtual const char *	parentClassName () const
	Returns the registered parent class name, or an empty string for the root.
bool	debug () const
	Returns whether piCoutObj output is enabled for this object.
void	setName (const PIString &name)
	Sets the `name` property of this object.
void	setDebug (bool debug)
	Enables or disables piCoutObj output for this object.
PIVariant	property (const char *name) const
	Returns the property with name "name".
void	setProperty (const char *name, const PIVariant &value)
	Sets the property "name" to "value" and creates it if needed.
bool	isPropertyExists (const char *name) const
	Returns whether the property "name" exists.
void	setThreadSafe (bool yes)
	Enables or disables the internal object mutex during handler execution.
bool	isThreadSafe () const
	Returns whether the internal object mutex is enabled for handler execution.
bool	execute (const PIString &method, const PIVector< PIVariantSimple > &vl)
	Executes a registered method or handler method by name with the supplied arguments.
bool	execute (const PIString &method)
	Overload of execute() for a method without arguments.
bool	execute (const PIString &method, const PIVariantSimple &v0)
	Overload of execute() for one argument.
bool	execute (const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1)
	Overload of execute() for two arguments.
bool	execute (const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2)
	Overload of execute() for three arguments.
bool	execute (const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2, const PIVariantSimple &v3)
	Overload of execute() for four arguments.
bool	executeQueued (PIObject *performer, const PIString &method, const PIVector< PIVariantSimple > &vl)
	Queues execution of a registered method on the performer object.
bool	executeQueued (PIObject *performer, const PIString &method)
	Overload of executeQueued() for a method without arguments.
bool	executeQueued (PIObject *performer, const PIString &method, const PIVariantSimple &v0)
	Overload of executeQueued() for one argument.
bool	executeQueued (PIObject *performer, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1)
	Overload of executeQueued() for two arguments.
bool	executeQueued (PIObject *performer, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2)
	Overload of executeQueued() for three arguments.
bool	executeQueued (PIObject *performer, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2, const PIVariantSimple &v3)
	Overload of executeQueued() for four arguments.
void	dump (const PIString &line_prefix=PIString()) const
	Dumps object diagnostics to the project output stream.
PIStringList	scopeList () const
	Returns the registered inheritance scope of this object, including its own class.
PIStringList	methodsEH () const
	Returns full signatures of all registered event and handler methods for this class scope.
bool	isMethodEHContains (const PIString &name) const
	Returns whether a registered event or handler method with this name exists.
PIString	methodEHArguments (const PIString &name) const
	Returns the comma-separated argument type list of a registered method.
PIString	methodEHFullFormat (const PIString &name) const
	Returns the full registered signature of a method.
PIString	methodEHFromAddr (const void *addr) const
	Returns the registered method name for the specified entry-point address.
void	piDisconnect (const PIString &sig, PIObject dest, void ev_h)
	Disconnects this source object from a specific destination handler for event "sig".
void	piDisconnect (const PIString &sig, PIObject *dest)
	Disconnects this source object from all connections of event "sig" to destination object "dest".
void	piDisconnect (const PIString &sig)
	Disconnects this source object from all connections of event "sig".
bool	isPIObject () const
	Returns whether this pointer still refers to a live PIObject instance.
template<typename T>
bool	isTypeOf () const
	Returns whether this object belongs to class "T" or one of its registered descendants.
template<typename T>
T *	cast () const
	Returns this object cast to "T" when isTypeOf<T>() succeeds, otherwise `nullptr`.
void	callQueuedEvents ()
	Executes all queued deliveries posted to this performer object.
bool	maybeCallQueuedEvents ()
	Executes queued deliveries only when this object was used as a performer.
void	deleteLater ()
	Schedules the object for deferred deletion.
void	deleted (PIObject *o)
	Raised immediately before object destruction.

Private Member Functions
void	tick (int) override
	Virtual tick method. The main loop passes delimiter 1, additional delimiters pass their own value.
void	propertyChanged (const char *) override
	Virtual method called after property "name" has been changed by setProperty().

Handlers
void	start ()
	Starts periodic diagnostics evaluation with the default interval.
void	start (PISystemTime interval)
	Starts periodic diagnostics evaluation with interval "interval".
void	reset ()
	Resets counters, rolling history and derived statistics.
void	received (int size, bool correct)
	Notifies diagnostics about one received packet of size "size".
void	sended (int size)
	Notifies diagnostics about one sent packet of size "size".

Events
void	qualityChanged (PIDiagnostics::Quality new_quality, PIDiagnostics::Quality old_quality)
	Emitted when receive quality changes from "old_quality" to "new_quality".

Additional Inherited Members
Static Public Member Functions inherited from PIObject
static bool	execute (PIObject *o, const PIString &method, const PIVector< PIVariantSimple > &vl)
	Static convenience wrapper for execute().
static bool	execute (PIObject *o, const PIString &method)
	Static overload of execute() without arguments.
static bool	execute (PIObject *o, const PIString &method, const PIVariantSimple &v0)
	Static overload of execute() for one argument.
static bool	execute (PIObject *o, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1)
	Static overload of execute() for two arguments.
static bool	execute (PIObject *o, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2)
	Static overload of execute() for three arguments.
static bool	execute (PIObject *o, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2, const PIVariantSimple &v3)
	Static overload of execute() for four arguments.
static bool	executeQueued (PIObject o, PIObject performer, const PIString &method, const PIVector< PIVariantSimple > &vl)
	Static convenience wrapper for executeQueued().
static bool	executeQueued (PIObject o, PIObject performer, const PIString &method)
	Static overload of executeQueued() without arguments.
static bool	executeQueued (PIObject o, PIObject performer, const PIString &method, const PIVariantSimple &v0)
	Static overload of executeQueued() for one argument.
static bool	executeQueued (PIObject o, PIObject performer, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1)
	Static overload of executeQueued() for two arguments.
static bool	executeQueued (PIObject o, PIObject performer, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2)
	Static overload of executeQueued() for three arguments.
static bool	executeQueued (PIObject o, PIObject performer, const PIString &method, const PIVariantSimple &v0, const PIVariantSimple &v1, const PIVariantSimple &v2, const PIVariantSimple &v3)
	Static overload of executeQueued() for four arguments.
static PIObject::Connection	piConnect (PIObject src, const PIString &sig, PIObject dest_o, void dest, void ev_h, void e_h, int args, const char loc)
	Low-level direct connection helper behind the legacy `CONNECT*` macros.
static PIObject::Connection	piConnectU (PIObject src, const PIString &sig, PIObject dest_o, void dest, const PIString &hname, const char loc, PIObject *performer=0)
	Low-level name-based connection helper behind CONNECTU() and CONNECTU_QUEUED().
static PIObject::Connection	piConnectLS (PIObject src, const PIString &sig, std::function< void()> f, const char *loc)
	Low-level helper that connects an event to a lambda or functor wrapper.
static void	piDisconnect (PIObject src, const PIString &sig, PIObject dest, void *ev_h)
	Disconnects source object "src" from a specific destination handler for event "sig".
static void	piDisconnect (PIObject src, const PIString &sig, PIObject dest)
	Disconnects source object "src" from all connections of event "sig" to destination object "dest".
static void	piDisconnect (PIObject *src, const PIString &sig)
	Disconnects source object "src" from all connections of event "sig".
static void	raiseEvent (PIObject *sender, const uint eventID)
	Internal event delivery helper for registered events without arguments.
template<typename T0>
static void	raiseEvent (PIObject *sender, const uint eventID, const T0 &v0=T0())
	Internal event delivery helper for registered events with one argument.
template<typename T0, typename T1>
static void	raiseEvent (PIObject *sender, const uint eventID, const T0 &v0=T0(), const T1 &v1=T1())
	Internal event delivery helper for registered events with two arguments.
template<typename T0, typename T1, typename T2>
static void	raiseEvent (PIObject *sender, const uint eventID, const T0 &v0=T0(), const T1 &v1=T1(), const T2 &v2=T2())
	Internal event delivery helper for registered events with three arguments.
template<typename T0, typename T1, typename T2, typename T3>
static void	raiseEvent (PIObject *sender, const uint eventID, const T0 &v0=T0(), const T1 &v1=T1(), const T2 &v2=T2(), const T3 &v3=T3())
	Internal event delivery helper for registered events with four arguments.
static PIObject *	findByName (const PIString &name)
	Returns the first live object with name "name", or `nullptr`.
static bool	isPIObject (const PIObject *o)
	Returns whether "o" points to a live PIObject instance.
static bool	isPIObject (const void *o)
	Overload of isPIObject() for an untyped pointer.
template<typename T>
static bool	isTypeOf (const PIObject *o)
	Returns whether "o" belongs to class "T" or one of its registered descendants.
template<typename T>
static bool	isTypeOf (const void *o)
	Overload of isTypeOf() for an untyped pointer.
static PIString	simplifyType (const char *a, bool readable=true)
	Simplifies a C++ type spelling for registered-method metadata.
Protected Member Functions inherited from PIObject
PIObject *	emitter () const
	Returns the source object that raised the current event.
Related Symbols inherited from PIObject
#define	piCoutObj
	Macro used for conditional (piDebug && PIObject::debug()) output to PICout(StdOut) for subclasses of PIObject.
#define	piCerrObj
	Macro used for conditional (piDebug && PIObject::debug()) output to PICout(StdErr) for subclasses of PIObject.
#define	PIOBJECT(name)
	Put this macro inside a direct PIObject subclass definition to enable registered events, event handlers and class metadata.
#define	PIOBJECT_SUBCLASS(name, parent)
	Put this macro inside a PIObject subclass definition to inherit registered methods and class scope from "parent".
#define	EVENT_HANDLER0(ret, name)
	Declare a registered event handler method with signature ret name().
#define	EVENT_HANDLER1(ret, name, type0, var0)
	Declare a registered event handler method with one argument.
#define	EVENT_HANDLER2(ret, name, type0, var0, type1, var1)
	Declare a registered event handler method with two arguments.
#define	EVENT_HANDLER3(ret, name, type0, var0, type1, var1, type2, var2)
	Declare a registered event handler method with three arguments.
#define	EVENT_HANDLER4(ret, name, type0, var0, type1, var1, type2, var2, type3, var3)
	Declare a registered event handler method with four arguments.
#define	EVENT_HANDLER EVENT_HANDLER0
	Synonym of EVENT_HANDLER0.
#define	EVENT_VHANDLER0(ret, name)
	Declare a virtual registered event handler method with signature virtual ret name().
#define	EVENT_VHANDLER1(ret, name, type0, var0)
	Declare a virtual registered event handler method with one argument.
#define	EVENT_VHANDLER2(ret, name, type0, var0, type1, var1)
	Declare a virtual registered event handler method with two arguments.
#define	EVENT_VHANDLER3(ret, name, type0, var0, type1, var1, type2, var2)
	Declare a virtual registered event handler method with three arguments.
#define	EVENT_VHANDLER4(ret, name, type0, var0, type1, var1, type2, var2, type3, var3)
	Declare a virtual registered event handler method with four arguments.
#define	EVENT_VHANDLER EVENT_VHANDLER0
	Synonym of EVENT_VHANDLER0.
#define	EVENT0(name)
	Declare an event method with no arguments.
#define	EVENT1(name, type0, var0)
	Declare an event method with one argument.
#define	EVENT2(name, type0, var0, type1, var1)
	Declare an event method with two arguments.
#define	EVENT3(name, type0, var0, type1, var1, type2, var2)
	Declare an event method with three arguments.
#define	EVENT4(name, type0, var0, type1, var1, type2, var2, type3, var3)
	Declare an event method with four arguments.
#define	EVENT EVENT0
	Synonym of EVENT0.
#define	RAISE_EVENT0(src, event)
	Compatibility helper that raises event "event" on source object "src".
#define	RAISE_EVENT1(src, event, v0)
	Compatibility helper that raises event "event" with one argument.
#define	RAISE_EVENT2(src, event, v0, v1)
	Compatibility helper that raises event "event" with two arguments.
#define	RAISE_EVENT3(src, event, v0, v1, v2)
	Compatibility helper that raises event "event" with three arguments.
#define	RAISE_EVENT4(src, event, v0, v1, v2, v3)
	Compatibility helper that raises event "event" with four arguments.
#define	CONNECTU(src, event, dest, handler)
	Connect event "event" from object "src" to event handler or event "handler" of object "dest".
#define	CONNECTU_QUEUED(src, event, dest, handler, performer)
	Connect event "event" from object "src" to event handler or event "handler" of object "dest".
#define	CONNECTL(src, event, functor)
	Connect event "event" from object "src" to lambda-expression "functor".
#define	CONNECT0(ret, src, event, dest, handler)
	Legacy compatibility helper that connects an event to a registered handler with compile-time signature spelling.
#define	CONNECT1(ret, type0, src, event, dest, handler)
	Legacy compatibility helper for a one-argument registered event or handler.
#define	CONNECT2(ret, type0, type1, src, event, dest, handler)
	Legacy compatibility helper for a two-argument registered event or handler.
#define	CONNECT3(ret, type0, type1, type2, src, event, dest, handler)
	Legacy compatibility helper for a three-argument registered event or handler.
#define	CONNECT4(ret, type0, type1, type2, type3, src, event, dest, handler)
	Legacy compatibility helper for a four-argument registered event or handler.
#define	CONNECT CONNECT0
	Synonym of CONNECT0.
#define	WEAK_CONNECT0(ret, src, event, dest, handler)
	Legacy compatibility helper that skips source method verification.
#define	WEAK_CONNECT1(ret, type0, src, event, dest, handler)
	Legacy compatibility helper that skips source method verification for one argument.
#define	WEAK_CONNECT2(ret, type0, type1, src, event, dest, handler)
	Legacy compatibility helper that skips source method verification for two arguments.
#define	WEAK_CONNECT3(ret, type0, type1, type2, src, event, dest, handler)
	Legacy compatibility helper that skips source method verification for three arguments.
#define	WEAK_CONNECT4(ret, type0, type1, type2, type3, src, event, dest, handler)
	Legacy compatibility helper that skips source method verification for four arguments.
#define	WEAK_CONNECT WEAK_CONNECT0
	Synonym of WEAK_CONNECT0.
#define	DISCONNECT0(ret, src, event, dest, handler)
	Disconnect a registered event from a registered event handler.
#define	DISCONNECT1(ret, type0, src, event, dest, handler)
	Disconnect a one-argument registered event from a registered event handler.
#define	DISCONNECT2(ret, type0, type1, src, event, dest, handler)
	Disconnect a two-argument registered event from a registered event handler.
#define	DISCONNECT3(ret, type0, type1, type2, src, event, dest, handler)
	Disconnect a three-argument registered event from a registered event handler.
#define	DISCONNECT4(ret, type0, type1, type2, type3, src, event, dest, handler)
	Disconnect a four-argument registered event from a registered event handler.
#define	DISCONNECT DISCONNECT0
	Synonym of DISCONNECT0.
#define	HANDLER(handler)
	Low-level helper that expands to the registered handler entry point.

Detailed Description

Connection diagnostics for packet frequency, throughput and receive quality This class provides connection quality diagnostics based on packet reception statistics.

Connection quality diagnostics.

Synopsis

This class provide abstract connection quality diagnostics and counting. You should create instance of PIDiagnostics and on packet receive call function received(), on packet send call function sended(). PIDiagnostics calculates correct, wrong and sended counters, packets per second, bytes per seconds, immediate and integral receive frequencies and receive/send speeds in human readable representation. There statistics are calculates one time per period, by default 1 second. To calculate them you should start PIDiagnostics with function start() or pass true to constructor.

Classes

Public Types

Public Member Functions

Private Member Functions

Handlers

Events

Additional Inherited Members

Detailed Description

Synopsis