A basic usage example of the modules pthreads and pthreads::cocurrent_collections

20 threads share an array and a barrier. They each insert 1000 strings into the array and wait at a barrier before finishing.

Redefined classes

redef class Sys

pthreads :: concurrent_array_and_barrier $ Sys

The main class of the program.

All class definitions

redef class Sys

pthreads :: concurrent_array_and_barrier $ Sys

The main class of the program.
package_diagram pthreads::concurrent_array_and_barrier concurrent_array_and_barrier pthreads::concurrent_collections concurrent_collections pthreads::concurrent_array_and_barrier->pthreads::concurrent_collections pthreads pthreads pthreads::concurrent_collections->pthreads ...pthreads ... ...pthreads->pthreads a_star-m a_star-m a_star-m->pthreads::concurrent_array_and_barrier


module abstract_collection

core :: abstract_collection

Abstract collection classes and services.
module abstract_text

core :: abstract_text

Abstract class for manipulation of sequences of characters
module array

core :: array

This module introduces the standard array structure.
module bitset

core :: bitset

Services to handle BitSet
module bytes

core :: bytes

Services for byte streams and arrays
module circular_array

core :: circular_array

Efficient data structure to access both end of the sequence.
module codec_base

core :: codec_base

Base for codecs to use with streams
module codecs

core :: codecs

Group module for all codec-related manipulations
module collection

core :: collection

This module define several collection classes.
module core

core :: core

Standard classes and methods used by default by Nit programs and libraries.
module environ

core :: environ

Access to the environment variables of the process
module error

core :: error

Standard error-management infrastructure.
module exec

core :: exec

Invocation and management of operating system sub-processes.
module file

core :: file

File manipulations (create, read, write, etc.)
module fixed_ints

core :: fixed_ints

Basic integers of fixed-precision
module fixed_ints_text

core :: fixed_ints_text

Text services to complement fixed_ints
module flat

core :: flat

All the array-based text representations
module gc

core :: gc

Access to the Nit internal garbage collection mechanism
module hash_collection

core :: hash_collection

Introduce HashMap and HashSet.
module iso8859_1

core :: iso8859_1

Codec for ISO8859-1 I/O
module kernel

core :: kernel

Most basic classes and methods.
module list

core :: list

This module handle double linked lists
module math

core :: math

Mathematical operations
module native

core :: native

Native structures for text and bytes
module numeric

core :: numeric

Advanced services for Numeric types
module protocol

core :: protocol

module pthreads

pthreads :: pthreads

Main POSIX threads support and intro the classes Thread, Mutex and Barrier
module queue

core :: queue

Queuing data structures and wrappers
module range

core :: range

Module for range of discrete objects.
module re

core :: re

Regular expression support for all services based on Pattern
module ropes

core :: ropes

Tree-based representation of a String.
module sorter

core :: sorter

This module contains classes used to compare things and sorts arrays.
module stream

core :: stream

Input and output streams of characters
module text

core :: text

All the classes and methods related to the manipulation of text entities
module time

core :: time

Management of time and dates
module union_find

core :: union_find

union–find algorithm using an efficient disjoint-set data structure
module utf8

core :: utf8

Codec for UTF-8 I/O


module concurrent_collections

pthreads :: concurrent_collections

Introduces thread-safe concurrent collections


module a_star-m


# A basic usage example of the modules `pthreads` and `pthreads::cocurrent_collections`
# 20 threads share an array and a barrier. They each insert 1000 strings into
# the array and wait at a barrier before finishing.
module concurrent_array_and_barrier is example

import pthreads::concurrent_collections

private class MyThread
	super Thread

	# This `ConcurrentArray` has its own `Mutex`
	var array: ConcurrentArray[String]

	# Use an explicit `Barrier`
	var barrier: Barrier

	var id: Int

	redef fun main
		# Print and add to Array 1000 times
		for i in 1000.times do
			var str = "thread {id}: {i}"
			array.add str

		# Wait at the `barrier`

		return id

var n_threads = 20

# This `ConcurrentArray` has its own `Mutex`
var array = new ConcurrentArray[String]

# Use an explicit `Barrier`
var barrier = new Barrier(n_threads)

# Create all our threads
var threads = new Array[Thread]
for t in n_threads.times do
	var thread = new MyThread(array, barrier, t)
	threads.add thread

# Wait for the threads to complete
for thread in threads do
	print "Thread {thread.join or else "null"} is done"

print "{array.length} strings inserted"