1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
# coding=utf-8
"""
SimulationStep supports stepping through SimPy simulation event - by - event.
Based on generators.
"""
from SimPy.Simulation import *
_step = False
class SimulationStep(Simulation):
def __init__(self):
Simulation.__init__(self)
self._step = False
def initialize(self):
Simulation.initialize(self)
self._step = False
def startStepping(self):
"""Application function to start stepping through simulation."""
self._step = True
def stopStepping(self):
"""Application function to stop stepping through simulation."""
self._step = False
def step(self):
Simulation.step(self)
if self._step: self.callback()
def simulate(self, callback=lambda: None, until=0):
"""
Simulates until simulation time reaches ``until``. After processing each
event, ``callback`` will be invoked if stepping has been enabled with
:meth:`~SimPy.SimulationStep.startStepping`.
"""
self.callback = callback
return Simulation.simulate(self, until)
# For backward compatibility
Globals.sim = SimulationStep()
def startStepping():
Globals.sim.startStepping()
def stopStepping():
Globals.sim.stopStepping()
peek = Globals.sim.peek
step = Globals.sim.step
allMonitors = Globals.sim.allMonitors
allTallies = Globals.sim.allTallies
def simulate(callback = lambda :None, until = 0):
return Globals.sim.simulate(callback = callback, until = until)
# End backward compatibility
|
