#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
This file is part of the web2py Web Framework
Developed by Massimo Di Pierro <mdipierro@cs.depaul.edu>,
limodou <limodou@gmail.com> and srackham <srackham@gmail.com>.
License: LGPLv3 (http://www.gnu.org/licenses/lgpl.html)
"""
import logging
import pdb
import Queue
import sys
logger = logging.getLogger("web2py")
class Pipe(Queue.Queue):
def __init__(self, name, mode='r', *args, **kwargs):
self.__name = name
Queue.Queue.__init__(self, *args, **kwargs)
def write(self, data):
logger.debug("debug %s writting %s" % (self.__name, data))
self.put(data)
def flush(self):
# mark checkpoint (complete message)
logger.debug("debug %s flushing..." % self.__name)
self.put(None)
# wait until it is processed
self.join()
logger.debug("debug %s flush done" % self.__name)
def read(self, count=None, timeout=None):
logger.debug("debug %s reading..." % (self.__name, ))
data = self.get(block=True, timeout=timeout)
# signal that we are ready
self.task_done()
logger.debug("debug %s read %s" % (self.__name, data))
return data
def readline(self):
logger.debug("debug %s readline..." % (self.__name, ))
return self.read()
pipe_in = Pipe('in')
pipe_out = Pipe('out')
debugger = pdb.Pdb(completekey=None, stdin=pipe_in, stdout=pipe_out,)
def set_trace():
"breakpoint shortcut (like pdb)"
logger.info("DEBUG: set_trace!")
debugger.set_trace(sys._getframe().f_back)
def stop_trace():
"stop waiting for the debugger (called atexit)"
# this should prevent communicate is wait forever a command result
# and the main thread has finished
logger.info("DEBUG: stop_trace!")
pipe_out.write("debug finished!")
pipe_out.write(None)
#pipe_out.flush()
def communicate(command=None):
"send command to debbuger, wait result"
if command is not None:
logger.info("DEBUG: sending command %s" % command)
pipe_in.write(command)
#pipe_in.flush()
result = []
while True:
data = pipe_out.read()
if data is None:
break
result.append(data)
logger.info("DEBUG: result %s" % repr(result))
return ''.join(result)