madness::ConditionVariable Class Reference

Scalable and fair condition variable (spins on local value) More...

#include <worldmutex.h>

Inheritance diagram for madness::ConditionVariable:

Collaboration diagram for madness::ConditionVariable:

Public Member Functions
	ConditionVariable ()
virtual	~ConditionVariable ()
void	broadcast () const
	You should acquire the mutex before broadcasting.
void	set_wait_policy (WaitPolicy p, int us=0)
void	signal () const
	You should acquire the mutex before signalling.
void	wait () const
	You should acquire the mutex before waiting.
Public Member Functions inherited from madness::Spinlock
	Spinlock (int junk=0)
	Make and initialize a spinlock ... initial state is unlocked.
virtual	~Spinlock ()
void	lock () const
	Acquire the spinlock waiting if necessary.
bool	try_lock () const
	Try to acquire the spinlock ... return true on success, false on failure.
void	unlock () const
	Free a spinlock owned by this thread.

Public Attributes
int	back
volatile bool *	fifo [MAX_NTHREAD]
int	front

Static Public Attributes
static const int	MAX_NTHREAD = 128

Private Attributes
WaitPolicy	wait_policy_ = WaitPolicy::Busy
std::chrono::microseconds	wait_usleep_ = std::chrono::microseconds(0)

Detailed Description

Scalable and fair condition variable (spins on local value)

Constructor & Destructor Documentation

ConditionVariable()

madness::ConditionVariable::ConditionVariable ( )

inline

~ConditionVariable()

virtual madness::ConditionVariable::~ConditionVariable ( )

inlinevirtual

Member Function Documentation

broadcast()

void madness::ConditionVariable::broadcast ( ) const

inline

You should acquire the mutex before broadcasting.

References back, front, and signal().

set_wait_policy()

void madness::ConditionVariable::set_wait_policy ( WaitPolicy  p, int  us = 0  )

inline

References p(), wait_policy_, and wait_usleep_.

Referenced by madness::DQueue< T >::set_wait_policy().

signal()

void madness::ConditionVariable::signal ( ) const

inline

You should acquire the mutex before signalling.

References madness::f, fifo, front, and MAX_NTHREAD.

Referenced by broadcast().

wait()

void madness::ConditionVariable::wait ( ) const

inline

You should acquire the mutex before waiting.

References b, back, madness::cpu_relax(), madness::Spinlock::lock(), MAX_NTHREAD, madness::Sleep, madness::Spinlock::unlock(), wait_policy_, wait_usleep_, and madness::Yield.

Member Data Documentation

back

int madness::ConditionVariable::back

mutable

Referenced by broadcast(), and wait().

fifo

volatile bool* madness::ConditionVariable::fifo[MAX_NTHREAD]

mutable

Referenced by signal().

front

int madness::ConditionVariable::front

mutable

Referenced by broadcast(), and signal().

MAX_NTHREAD

const int madness::ConditionVariable::MAX_NTHREAD = 128

static

Referenced by signal(), and wait().

wait_policy_

WaitPolicy madness::ConditionVariable::wait_policy_ = WaitPolicy::Busy

private

Referenced by set_wait_policy(), and wait().

wait_usleep_

std::chrono::microseconds madness::ConditionVariable::wait_usleep_ = std::chrono::microseconds(0)

private

Referenced by set_wait_policy(), and wait().

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

• worldmutex.h