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#! /usr/bin/env python
# encoding: utf-8
import sys
if sys.hexversion < 0x020400f0: from sets import Set as set
import sys,random,time,threading,Queue,traceback
import Build,Utils,Logs,Options
import pproc
from Logs import debug,error
from Constants import*
GAP=15
run_old=threading.Thread.run
def run(*args,**kwargs):
try:
run_old(*args,**kwargs)
except(KeyboardInterrupt,SystemExit):
raise
except:
sys.excepthook(*sys.exc_info())
threading.Thread.run=run
class TaskConsumer(threading.Thread):
def __init__(self,m):
threading.Thread.__init__(self)
self.setDaemon(1)
self.master=m
self.start()
def run(self):
try:
self.loop()
except:
pass
def loop(self):
m=self.master
while 1:
tsk=m.ready.get()
if m.stop:
m.out.put(tsk)
continue
try:
tsk.generator.bld.printout(tsk.display())
if tsk.__class__.stat:ret=tsk.__class__.stat(tsk)
else:ret=tsk.call_run()
except Exception,e:
tsk.err_msg=Utils.ex_stack()
tsk.hasrun=EXCEPTION
m.error_handler(tsk)
m.out.put(tsk)
continue
if ret:
tsk.err_code=ret
tsk.hasrun=CRASHED
else:
try:
tsk.post_run()
except OSError:
tsk.hasrun=MISSING
except:
tsk.err_msg=Utils.ex_stack()
tsk.hasrun=EXCEPTION
else:
tsk.hasrun=SUCCESS
if tsk.hasrun!=SUCCESS:
m.error_handler(tsk)
m.out.put(tsk)
class Parallel(object):
def __init__(self,bld,j=2):
self.numjobs=j
self.manager=bld.task_manager
self.total=self.manager.total()
self.outstanding=[]
self.maxjobs=sys.maxint
self.frozen=[]
self.ready=Queue.Queue(0)
self.out=Queue.Queue(0)
self.count=0
self.stuck=0
self.processed=1
self.consumers=None
self.stop=False
self.error=False
def get_next(self):
if not self.outstanding:
return None
return self.outstanding.pop(0)
def postpone(self,tsk):
if random.randint(0,1):
self.frozen.insert(0,tsk)
else:
self.frozen.append(tsk)
def refill_task_list(self):
while self.count>self.numjobs+GAP or self.count>self.maxjobs:
self.get_out()
while not self.outstanding:
if self.count:
self.get_out()
if self.frozen:
self.outstanding+=self.frozen
self.frozen=[]
elif not self.count:
(self.maxjobs,tmp)=self.manager.get_next_set()
if tmp:self.outstanding+=tmp
break
def get_out(self):
ret=self.out.get()
self.manager.add_finished(ret)
if not self.stop and getattr(ret,'more_tasks',None):
self.outstanding+=ret.more_tasks
self.total+=len(ret.more_tasks)
self.count-=1
def error_handler(self,tsk):
if not Options.options.keep:
self.stop=True
self.error=True
def start(self):
while not self.stop:
self.refill_task_list()
tsk=self.get_next()
if not tsk:
if self.count:
continue
else:
break
if tsk.hasrun:
self.processed+=1
self.manager.add_finished(tsk)
try:
st=tsk.runnable_status()
except Exception,e:
tsk.err_msg=Utils.ex_stack()
tsk.hasrun=EXCEPTION
self.processed+=1
self.error_handler(tsk)
self.manager.add_finished(tsk)
continue
if st==ASK_LATER:
self.postpone(tsk)
elif st==SKIP_ME:
self.processed+=1
tsk.hasrun=SKIPPED
self.manager.add_finished(tsk)
else:
tsk.position=(self.processed,self.total)
self.count+=1
self.ready.put(tsk)
self.processed+=1
if not self.consumers:
self.consumers=[TaskConsumer(self)for i in xrange(self.numjobs)]
while self.error and self.count:
self.get_out()
assert(self.count==0 or self.stop)
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