org::xmlBlaster::util::TimestampFactory Class Reference

High performing timestamp class, time elapsed since 1970, the nanos are simulated as a unique counter. More...

Collaboration diagram for org::xmlBlaster::util::TimestampFactory:

[legend]List of all members.

Public Member Functions
	~TimestampFactory ()
Timestamp	getTimestamp ()
	Constructs a current timestamp which is guaranteed to be unique in time for this process.
Static Public Member Functions
static TimestampFactory &	getInstance ()
	The method to call to get the singleton Timestamp object.
static std::string	toXml (Timestamp timestamp, const std::string &extraOffset="", bool literal=false)
static std::string	getTimeAsString (Timestamp timestamp)
Friends
TimestampFactory &	getInstance ()

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Detailed Description

High performing timestamp class, time elapsed since 1970, the nanos are simulated as a unique counter.

The counter is rewound on any second step (this is different from its omonimous java class since there is no portable way in c++ to get the system time with a millisecond precision yet. Besides this difference, the c++ timestamp is a singleton working as a factory of timestamps (which are of the type long long -> typedef int64_t Timestamp;).
Guarantees that any created Timestamp instance is unique in the current process.

Fails only if

• a CPU can create more than 999999999 Timestamp instances per second
• In ~ 288 years when Long.MAX_VALUE = 9223372036854775807 overflows (current value is 1013338358124000008)

Author:

Marcel Ruff

Michele Laghi

Definition at line 48 of file Timestamp.h.

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Constructor & Destructor Documentation

org::xmlBlaster::util::TimestampFactory::~TimestampFactory

(

)

Definition at line 37 of file Timestamp.cpp.

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Member Function Documentation

static TimestampFactory& org::xmlBlaster::util::TimestampFactory::getInstance

(

)

[static]

The method to call to get the singleton Timestamp object.

Timestamp org::xmlBlaster::util::TimestampFactory::getTimestamp

(

)

Constructs a current timestamp which is guaranteed to be unique in time for this process.

Returns:

a 64 bit integer (typedef int64_t Timestamp)

Definition at line 48 of file Timestamp.cpp.

References org::xmlBlaster::util::thread::Thread::getCurrentTimestamp().

Referenced by org::xmlBlaster::util::Timeout::addTimeoutListener(), org::xmlBlaster::client::qos::SubscribeQos::generateSubscriptionId(), org::xmlBlaster::util::Global::getInstanceId(), org::xmlBlaster::util::qos::MsgQosData::getRemainingLife(), org::xmlBlaster::util::Timeout::run(), org::xmlBlaster::util::Timeout::spanToTimeout(), org::xmlBlaster::test::TestTimestamp::testTimestamp(), org::xmlBlaster::util::qos::StatusQosData::touchRcvTimestamp(), org::xmlBlaster::util::qos::QosData::touchRcvTimestamp(), and org::xmlBlaster::client::XmlBlasterAccess::XmlBlasterAccess().

static std::string org::xmlBlaster::util::TimestampFactory::toXml	(	Timestamp	timestamp,
		const std::string &	extraOffset = "",
		bool	literal = false
	)			[static]

Referenced by org::xmlBlaster::client::qos::GetReturnQos::getRcvTime().

string org::xmlBlaster::util::TimestampFactory::getTimeAsString

(

Timestamp

timestamp

)

[static]

Definition at line 78 of file Timestamp.cpp.

References org::xmlBlaster::util::Constants::BILLION, and org::xmlBlaster::util::lexical_cast().

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Friends And Related Function Documentation

TimestampFactory & org::xmlBlaster::util::TimestampFactory::getInstance

(

)

[friend]

Definition at line 41 of file Timestamp.cpp.

Referenced by org::xmlBlaster::client::qos::SubscribeQos::generateSubscriptionId(), org::xmlBlaster::util::Global::getInstanceId(), org::xmlBlaster::util::qos::MsgQosData::getRemainingLife(), org::xmlBlaster::test::TestTimestamp::testTimestamp(), org::xmlBlaster::util::qos::StatusQosData::touchRcvTimestamp(), org::xmlBlaster::util::qos::QosData::touchRcvTimestamp(), and org::xmlBlaster::client::XmlBlasterAccess::XmlBlasterAccess().

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The documentation for this class was generated from the following files:

• util/Timestamp.h
• util/Timestamp.cpp