Barrier synchronization tool

Ensures that count threads call and block on wait before releasing them.

Introduced properties

fun count: Int

pthreads :: Barrier :: count

Number of threads that must be waiting for wait to unblock
protected fun count=(count: Int)

pthreads :: Barrier :: count=

Number of threads that must be waiting for wait to unblock
fun wait

pthreads :: Barrier :: wait

Wait at this barrier and block until there are a count threads waiting

Redefined properties

redef type SELF: Barrier

pthreads $ Barrier :: SELF

Type of this instance, automatically specialized in every class
redef fun finalize

pthreads $ Barrier :: finalize

Liberate any resources held by self before the memory holding self is freed
redef init init(count: Int)

pthreads $ Barrier :: init

All properties

fun !=(other: nullable Object): Bool

core :: Object :: !=

Have self and other different values?
fun ==(other: nullable Object): Bool

core :: Object :: ==

Have self and other the same value?
type CLASS: Class[SELF]

core :: Object :: CLASS

The type of the class of self.
type SELF: Object

core :: Object :: SELF

Type of this instance, automatically specialized in every class
protected fun class_factory(name: String): CLASS

core :: Object :: class_factory

Implementation used by get_class to create the specific class.
fun class_name: String

core :: Object :: class_name

The class name of the object.
fun count: Int

pthreads :: Barrier :: count

Number of threads that must be waiting for wait to unblock
protected fun count=(count: Int)

pthreads :: Barrier :: count=

Number of threads that must be waiting for wait to unblock
fun finalize

core :: Finalizable :: finalize

Liberate any resources held by self before the memory holding self is freed
fun get_class: CLASS

core :: Object :: get_class

The meta-object representing the dynamic type of self.
fun hash: Int

core :: Object :: hash

The hash code of the object.
init init

core :: Object :: init

fun inspect: String

core :: Object :: inspect

Developer readable representation of self.
protected fun inspect_head: String

core :: Object :: inspect_head

Return "CLASSNAME:#OBJECTID".
intern fun is_same_instance(other: nullable Object): Bool

core :: Object :: is_same_instance

Return true if self and other are the same instance (i.e. same identity).
fun is_same_serialized(other: nullable Object): Bool

core :: Object :: is_same_serialized

Is self the same as other in a serialization context?
intern fun is_same_type(other: Object): Bool

core :: Object :: is_same_type

Return true if self and other have the same dynamic type.
intern fun object_id: Int

core :: Object :: object_id

An internal hash code for the object based on its identity.
fun output

core :: Object :: output

Display self on stdout (debug only).
intern fun output_class_name

core :: Object :: output_class_name

Display class name on stdout (debug only).
fun serialization_hash: Int

core :: Object :: serialization_hash

Hash value use for serialization
intern fun sys: Sys

core :: Object :: sys

Return the global sys object, the only instance of the Sys class.
abstract fun to_jvalue(env: JniEnv): JValue

core :: Object :: to_jvalue

fun to_s: String

core :: Object :: to_s

User readable representation of self.
fun wait

pthreads :: Barrier :: wait

Wait at this barrier and block until there are a count threads waiting
package_diagram pthreads::Barrier Barrier core::Finalizable Finalizable pthreads::Barrier->core::Finalizable core::Object Object core::Finalizable->core::Object ...core::Object ... ...core::Object->core::Object

Ancestors

interface Object

core :: Object

The root of the class hierarchy.

Parents

class Finalizable

core :: Finalizable

An object needing finalization

Class definitions

pthreads $ Barrier
# Barrier synchronization tool
#
# Ensures that `count` threads call and block on `wait` before releasing them.
class Barrier
	super Finalizable

	private var mutex = new Mutex
	private var cond: nullable NativePthreadCond = new NativePthreadCond

	# Number of threads that must be waiting for `wait` to unblock
	var count: Int

	private var threads_waiting = 0

	# Wait at this barrier and block until there are a `count` threads waiting
	fun wait
	do
		mutex.lock
		threads_waiting += 1
		if threads_waiting == count then
			threads_waiting = 0
			cond.broadcast
		else
			cond.wait(mutex.native.as(not null))
		end
		mutex.unlock
	end

	redef fun finalize
	do
		var cond = self.cond
		if cond != null then
			cond.destroy
			cond.free
		end
		self.cond = null
	end
end
lib/pthreads/pthreads.nit:445,1--482,3