Module: Parallel
- Extended by:
- ProcessorCount
- Defined in:
- lib/parallel.rb,
lib/parallel/version.rb,
lib/parallel/processor_count.rb
Defined Under Namespace
Modules: ProcessorCount
Classes: Break, DeadWorker, ExceptionWrapper, JobFactory, Kill, UserInterruptHandler, Worker
Constant Summary
collapse
- Stop =
Object.new
- VERSION =
Version = '1.9.0'
Class Method Summary
collapse
physical_processor_count, processor_count
Class Method Details
.each(array, options = {}, &block) ⇒ Object
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# File 'lib/parallel.rb', line 202
def each(array, options={}, &block)
map(array, options.merge(:preserve_results => false), &block)
array
end
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.each_with_index(array, options = {}, &block) ⇒ Object
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# File 'lib/parallel.rb', line 207
def each_with_index(array, options={}, &block)
each(array, options.merge(:with_index => true), &block)
end
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.in_processes(options = {}, &block) ⇒ Object
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# File 'lib/parallel.rb', line 196
def in_processes(options = {}, &block)
count, options = (options)
count ||= processor_count
map(0...count, options.merge(:in_processes => count), &block)
end
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.in_threads(options = {:count => 2}) ⇒ Object
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# File 'lib/parallel.rb', line 189
def in_threads(options={:count => 2})
count, _ = (options)
Array.new(count).each_with_index.map do |_, i|
Thread.new { yield(i) }
end.map!(&:value)
end
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.map(source, options = {}, &block) ⇒ Object
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# File 'lib/parallel.rb', line 211
def map(source, options = {}, &block)
options[:mutex] = Mutex.new
if RUBY_PLATFORM =~ /java/ and not options[:in_processes]
method = :in_threads
size = options[method] || processor_count
elsif options[:in_threads]
method = :in_threads
size = options[method]
else
method = :in_processes
if Process.respond_to?(:fork)
size = options[method] || processor_count
else
warn "Process.fork is not supported by this Ruby"
size = 0
end
end
job_factory = JobFactory.new(source, options[:mutex])
size = [job_factory.size, size].min
options[:return_results] = (options[:preserve_results] != false || !!options[:finish])
add_progress_bar!(job_factory, options)
if size == 0
work_direct(job_factory, options, &block)
elsif method == :in_threads
work_in_threads(job_factory, options.merge(:count => size), &block)
else
work_in_processes(job_factory, options.merge(:count => size), &block)
end
end
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.map_with_index(array, options = {}, &block) ⇒ Object
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# File 'lib/parallel.rb', line 245
def map_with_index(array, options={}, &block)
map(array, options.merge(:with_index => true), &block)
end
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.worker_number ⇒ Object
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# File 'lib/parallel.rb', line 249
def worker_number
Thread.current[:parallel_worker_number]
end
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.worker_number=(worker_num) ⇒ Object
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# File 'lib/parallel.rb', line 253
def worker_number=(worker_num)
Thread.current[:parallel_worker_number] = worker_num
end
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