TimerTest Class Reference

#include <timer_test.h>

Inheritance diagram for TimerTest:

Public Member Functions
	TimerTest ()
void	_testGlibTimeoutSources ()
void	_testGlibmmSignalTimeouts ()
void	_testGlibmmTimeoutSources ()
void	_testTimers ()
void	_testTimersIdleFrequency ()
void	_testTimersBlockIdle ()
void	testGlibTimeoutSources ()
void	testGlibmmSignalTimeouts ()
void	testGlibmmTimeoutSources ()
void	testTimers ()
void	testTimersIdleFrequency ()
void	testTimersBlockIdle ()

Private Member Functions
	CPPUNIT_TEST_SUITE (TimerTest)
	CPPUNIT_TEST (testGlibTimeoutSources)
	CPPUNIT_TEST (testGlibmmSignalTimeouts)
	CPPUNIT_TEST (testGlibmmTimeoutSources)
	CPPUNIT_TEST (testTimers)
	CPPUNIT_TEST (testTimersIdleFrequency)
	CPPUNIT_TEST (testTimersBlockIdle)
	CPPUNIT_TEST_SUITE_END ()
bool	on_idle_handler ()
bool	on_quit_handler ()
void	on_second_timeout ()
void	on_fast_timeout ()
void	on_rapid1_timeout ()
void	on_rapid2_timeout ()
bool	on_second_timeout_glibmm ()
bool	on_fast_timeout_glibmm ()
bool	on_rapid1_timeout_glibmm ()
bool	on_rapid2_timeout_glibmm ()
void	start_timing ()
void	reset_timing ()
void	reset_timing_run_main ()
void	connect_idle_handler ()
void	connect_quit_timeout ()

Static Private Member Functions
static guint64	second_timer_usecs ()
static guint64	fast_timer_usecs ()
static guint64	rapid1_timer_usecs ()
static guint64	rapid2_timer_usecs ()
static guint64	second_timer_ms ()
static guint64	fast_timer_ms ()
static guint64	rapid1_timer_ms ()
static guint64	rapid2_timer_ms ()
static guint64	test_length_ms ()
static gboolean	_second_timeout_handler (void *)
static gboolean	_fast_timeout_handler (void *)
static gboolean	_rapid1_timeout_handler (void *)
static gboolean	_rapid2_timeout_handler (void *)
static void	simulate_load (const std::string &name, guint64 time_usecs)

Private Attributes
std::string	m_current_test_name
bool	m_connect_idle
bool	m_block_idle
Glib::RefPtr< Glib::MainLoop >	m_main
Glib::RefPtr< Glib::MainContext >	m_context
PBD::TimingData	m_idle_timing_data
PBD::TimingData	m_second_timing_data
PBD::TimingData	m_fast_timing_data
PBD::TimingData	m_rapid1_timing_data
PBD::TimingData	m_rapid2_timing_data

Detailed Description

The main point of this test is to the compare the different ways of setting a timeout with glib and glibmm and the PBD::Timers class and then to test them all again with the maximum multimedia timer resolution(1ms) set with timeBeginPeriod on Windows.

The test demonstrates that when using Glibmm TimeoutSources the frequency of the timers is different that using Glib based timeouts. In Ardour that resulted in a noticable increase in CPU Usage, but behaviour may vary.

The other thing being tested is what effect adding two short timeouts(<40ms) to a glib context has on the idle timeout on Windows.

Glib Timeout sources run at a higher priority than the idle handler, so the more work performed in the timeout handlers the less frequent the idle handler will run until doesn't get scheduled at all. The consequence of this is blocking the UI.

Similarily because timeout sources and UI updates/rendering occur in the same context in Gtk the length of expose/draw operations will affect the accuracy of the timeouts.

Definition at line 33 of file timer_test.h.

Constructor & Destructor Documentation

TimerTest()

TimerTest::TimerTest ( )

inline

Definition at line 54 of file timer_test.h.

Member Function Documentation

_fast_timeout_handler()

static gboolean TimerTest::_fast_timeout_handler ( void *  )

staticprivate

_rapid1_timeout_handler()

static gboolean TimerTest::_rapid1_timeout_handler ( void *  )

staticprivate

_rapid2_timeout_handler()

static gboolean TimerTest::_rapid2_timeout_handler ( void *  )

staticprivate

_second_timeout_handler()

static gboolean TimerTest::_second_timeout_handler ( void *  )

staticprivate

_testGlibmmSignalTimeouts()

void TimerTest::_testGlibmmSignalTimeouts

(

)

_testGlibmmTimeoutSources()

void TimerTest::_testGlibmmTimeoutSources

(

)

_testGlibTimeoutSources()

void TimerTest::_testGlibTimeoutSources

(

)

_testTimers()

void TimerTest::_testTimers

(

)

_testTimersBlockIdle()

void TimerTest::_testTimersBlockIdle

(

)

_testTimersIdleFrequency()

void TimerTest::_testTimersIdleFrequency

(

)

connect_idle_handler()

void TimerTest::connect_idle_handler ( )

private

connect_quit_timeout()

void TimerTest::connect_quit_timeout ( )

private

CPPUNIT_TEST() [1/6]

TimerTest::CPPUNIT_TEST ( testGlibmmSignalTimeouts  )

private

CPPUNIT_TEST() [2/6]

TimerTest::CPPUNIT_TEST ( testGlibmmTimeoutSources  )

private

CPPUNIT_TEST() [3/6]

TimerTest::CPPUNIT_TEST ( testGlibTimeoutSources  )

private

CPPUNIT_TEST() [4/6]

TimerTest::CPPUNIT_TEST ( testTimers  )

private

CPPUNIT_TEST() [5/6]

TimerTest::CPPUNIT_TEST ( testTimersBlockIdle  )

private

CPPUNIT_TEST() [6/6]

TimerTest::CPPUNIT_TEST ( testTimersIdleFrequency  )

private

CPPUNIT_TEST_SUITE()

TimerTest::CPPUNIT_TEST_SUITE ( TimerTest  )

private

CPPUNIT_TEST_SUITE_END()

TimerTest::CPPUNIT_TEST_SUITE_END ( )

private

fast_timer_ms()

static guint64 TimerTest::fast_timer_ms ( )

inlinestaticprivate

Definition at line 99 of file timer_test.h.

fast_timer_usecs()

static guint64 TimerTest::fast_timer_usecs ( )

inlinestaticprivate

Definition at line 87 of file timer_test.h.

on_fast_timeout()

void TimerTest::on_fast_timeout ( )

private

on_fast_timeout_glibmm()

bool TimerTest::on_fast_timeout_glibmm ( )

private

on_idle_handler()

bool TimerTest::on_idle_handler ( )

private

on_quit_handler()

bool TimerTest::on_quit_handler ( )

private

on_rapid1_timeout()

void TimerTest::on_rapid1_timeout ( )

private

on_rapid1_timeout_glibmm()

bool TimerTest::on_rapid1_timeout_glibmm ( )

private

on_rapid2_timeout()

void TimerTest::on_rapid2_timeout ( )

private

on_rapid2_timeout_glibmm()

bool TimerTest::on_rapid2_timeout_glibmm ( )

private

on_second_timeout()

void TimerTest::on_second_timeout ( )

private

on_second_timeout_glibmm()

bool TimerTest::on_second_timeout_glibmm ( )

private

rapid1_timer_ms()

static guint64 TimerTest::rapid1_timer_ms ( )

inlinestaticprivate

Definition at line 102 of file timer_test.h.

rapid1_timer_usecs()

static guint64 TimerTest::rapid1_timer_usecs ( )

inlinestaticprivate

Definition at line 90 of file timer_test.h.

rapid2_timer_ms()

static guint64 TimerTest::rapid2_timer_ms ( )

inlinestaticprivate

Definition at line 105 of file timer_test.h.

rapid2_timer_usecs()

static guint64 TimerTest::rapid2_timer_usecs ( )

inlinestaticprivate

Definition at line 93 of file timer_test.h.

reset_timing()

void TimerTest::reset_timing ( )

private

reset_timing_run_main()

void TimerTest::reset_timing_run_main ( )

private

second_timer_ms()

static guint64 TimerTest::second_timer_ms ( )

inlinestaticprivate

Definition at line 96 of file timer_test.h.

second_timer_usecs()

static guint64 TimerTest::second_timer_usecs ( )

inlinestaticprivate

Definition at line 84 of file timer_test.h.

simulate_load()

static void TimerTest::simulate_load ( const std::string &  name, guint64  time_usecs  )

staticprivate

start_timing()

void TimerTest::start_timing ( )

private

test_length_ms()

static guint64 TimerTest::test_length_ms ( )

inlinestaticprivate

Definition at line 108 of file timer_test.h.

testGlibmmSignalTimeouts()

void TimerTest::testGlibmmSignalTimeouts

(

)

testGlibmmTimeoutSources()

void TimerTest::testGlibmmTimeoutSources

(

)

testGlibTimeoutSources()

void TimerTest::testGlibTimeoutSources

(

)

testTimers()

void TimerTest::testTimers

(

)

testTimersBlockIdle()

void TimerTest::testTimersBlockIdle

(

)

testTimersIdleFrequency()

void TimerTest::testTimersIdleFrequency

(

)

Member Data Documentation

m_block_idle

bool TimerTest::m_block_idle

private

Definition at line 114 of file timer_test.h.

m_connect_idle

bool TimerTest::m_connect_idle

private

Definition at line 113 of file timer_test.h.

m_context

Glib::RefPtr<Glib::MainContext> TimerTest::m_context

private

Definition at line 142 of file timer_test.h.

m_current_test_name

std::string TimerTest::m_current_test_name

private

Definition at line 111 of file timer_test.h.

m_fast_timing_data

PBD::TimingData TimerTest::m_fast_timing_data

private

Definition at line 149 of file timer_test.h.

m_idle_timing_data

PBD::TimingData TimerTest::m_idle_timing_data

private

Definition at line 147 of file timer_test.h.

m_main

Glib::RefPtr<Glib::MainLoop> TimerTest::m_main

private

Definition at line 141 of file timer_test.h.

m_rapid1_timing_data

PBD::TimingData TimerTest::m_rapid1_timing_data

private

Definition at line 150 of file timer_test.h.

m_rapid2_timing_data

PBD::TimingData TimerTest::m_rapid2_timing_data

private

Definition at line 151 of file timer_test.h.

m_second_timing_data

PBD::TimingData TimerTest::m_second_timing_data

private

Definition at line 148 of file timer_test.h.

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

• timer_test.h