/
task_algorithm.rb
125 lines (110 loc) · 3.69 KB
/
task_algorithm.rb
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module Pwrake
InvocationChain = Rake::InvocationChain
TaskArguments = Rake::TaskArguments
module TaskAlgorithm
attr_reader :subsequents
attr_reader :arguments
attr_reader :property
attr_reader :unfinished_prereq
def wrapper
if @wrapper.nil?
raise "TaskWrapper is not defined for #{self.class}[#{name}]"
end
@wrapper
end
def pw_search_tasks(args)
Log.debug "#{self.class}#pw_search_tasks start, args=#{args.inspect}"
tm = Time.now
task_args = TaskArguments.new(arg_names, args)
#timer = Timer.new("search_task")
#h = application.pwrake_options['HALT_QUEUE_WHILE_SEARCH']
#application.task_queue.synchronize(h) do
search_with_call_chain(nil, task_args, InvocationChain::EMPTY)
#end
#timer.finish
Log.debug "#{self.class}#pw_search_tasks end #{Time.now-tm}"
end
# Same as search, but explicitly pass a call chain to detect
# circular dependencies.
def search_with_call_chain(subseq, task_args, invocation_chain) # :nodoc:
new_chain = InvocationChain.append(self, invocation_chain)
@lock.synchronize do
if application.options.trace
#Log.info "** Search #{name} #{format_search_flags}"
application.trace "** Search #{name} #{format_search_flags}"
end
return true if @already_finished # <<--- competition !!!
@subsequents ||= []
@subsequents << subseq if subseq # <<--- competition !!!
if ! @already_searched
@already_searched = true
@arguments = task_args
@wrapper = TaskWrapper.new(self,task_args)
if @prerequisites.empty?
@unfinished_prereq = {}
else
search_prerequisites(task_args, new_chain)
end
#check_and_enq
if !@already_finished && @unfinished_prereq.empty?
application.task_queue.enq(@wrapper)
end
end
return false
end
rescue Exception => ex
add_chain_to(ex, new_chain)
raise ex
end
# Search all the prerequisites of a task.
def search_prerequisites(task_args, invocation_chain) # :nodoc:
@unfinished_prereq = {}
@prerequisites.each{|t| @unfinished_prereq[t]=true}
prerequisite_tasks.each { |prereq|
prereq_args = task_args.new_scope(prereq.arg_names)
if prereq.search_with_call_chain(self, prereq_args, invocation_chain)
@unfinished_prereq.delete(prereq.name)
end
}
end
# Format the trace flags for display.
def format_search_flags
flags = []
flags << "finished" if @already_finished
flags << "first_time" unless @already_searched
flags << "not_needed" unless needed?
flags.empty? ? "" : "(" + flags.join(", ") + ")"
end
private :format_search_flags
def pw_enq_subsequents
#t = Time.now
#h = application.pwrake_options['HALT_QUEUE_WHILE_SEARCH']
#application.task_queue.synchronize(h) do
@subsequents.each do |t| # <<--- competition !!!
#u = t.unfinished_prereq.keys
if t && t.check_prereq_finished(self.name)
application.task_queue.enq(t.wrapper)
end
end
#end
@already_finished = true # <<--- competition !!!
end
def check_prereq_finished(preq_name=nil)
@unfinished_prereq.delete(preq_name)
!@already_finished && @unfinished_prereq.empty?
end
def pw_set_property(property)
@property = property
self
end
end # TaskAlgorithm
module TaskInvoke
def invoke(*args)
Rake.application.invoke(self,*args)
end
def reenable
@already_invoked = false
@already_searched = false
end
end
end