2002-06-24 19:02:08 +00:00

750 lines
27 KiB
Python

from libpandaexpressModules import *
from DirectNotifyGlobal import *
from PythonUtil import *
from MessengerGlobal import *
import time
import fnmatch
import string
import signal
# MRM: Need to make internal task variables like time, name, index
# more unique (less likely to have name clashes)
exit = -1
done = 0
cont = 1
def print_exc_plus():
"""
Print the usual traceback information, followed by a listing of all the
local variables in each frame.
"""
import sys
import traceback
tb = sys.exc_info()[2]
while 1:
if not tb.tb_next:
break
tb = tb.tb_next
stack = []
f = tb.tb_frame
while f:
stack.append(f)
f = f.f_back
stack.reverse()
traceback.print_exc()
print "Locals by frame, innermost last"
for frame in stack:
print
print "Frame %s in %s at line %s" % (frame.f_code.co_name,
frame.f_code.co_filename,
frame.f_lineno)
for key, value in frame.f_locals.items():
print "\t%20s = " % key,
#We have to be careful not to cause a new error in our error
#printer! Calling str() on an unknown object could cause an
#error we don't want.
try:
print value
except:
print "<ERROR WHILE PRINTING VALUE>"
# Store the global clock
globalClock = ClockObject.getGlobalClock()
class Task:
count = 0
def __init__(self, callback, priority = 0):
# Unique ID for each task
self.id = Task.count
Task.count += 1
self.__call__ = callback
self.__priority = priority
self.uponDeath = None
self.dt = 0.0
self.maxDt = 0.0
self.avgDt = 0.0
self.runningTotal = 0.0
self.pstats = None
self.__removed = 0
def remove(self):
self.__removed = 1
def isRemoved(self):
return self.__removed
def getPriority(self):
return self.__priority
def setPriority(self, pri):
self.__priority = pri
def setStartTimeFrame(self, startTime, startFrame):
self.starttime = startTime
self.startframe = startFrame
def setCurrentTimeFrame(self, currentTime, currentFrame):
# Calculate and store this task's time (relative to when it started)
self.time = currentTime - self.starttime
self.frame = currentFrame - self.startframe
def setupPStats(self, name):
if __debug__:
import PStatCollector
self.pstats = PStatCollector.PStatCollector("App:Show code:" + name)
def finishTask(self, verbose):
if self.uponDeath:
self.uponDeath(self)
if verbose:
# We regret to announce...
messenger.send('TaskManager-removeTask', sentArgs = [self, self.name])
def __repr__(self):
if hasattr(self, 'name'):
return ('Task id: %s, name %s' % (self.id, self.name))
else:
return ('Task id: %s, no name' % (self.id))
def pause(delayTime):
def func(self):
if (self.time < self.delayTime):
return cont
else:
# Time is up, return done
# TaskManager.notify.debug('pause done: ' + self.name)
return done
task = Task(func)
task.name = 'pause'
task.delayTime = delayTime
return task
def sequence(*taskList):
return make_sequence(taskList)
def make_sequence(taskList):
def func(self):
frameFinished = 0
taskDoneStatus = -1
while (not frameFinished):
task = self.taskList[self.index]
# If this is a new task, set its start time and frame
if (self.index > self.prevIndex):
task.setStartTimeFrame(self.time, self.frame)
self.prevIndex = self.index
# Calculate this task's time since it started
task.setCurrentTimeFrame(self.time, self.frame)
# Execute the current task
ret = task(task)
# Check the return value from the task
# If this current task wants to continue,
# come back to it next frame
if (ret == cont):
taskDoneStatus = cont
frameFinished = 1
# If this task is done, increment the index so that next frame
# we will start executing the next task on the list
elif (ret == done):
self.index = self.index + 1
taskDoneStatus = cont
frameFinished = 0
# If this task wants to exit, the sequence exits
elif (ret == exit):
taskDoneStatus = exit
frameFinished = 1
# If we got to the end of the list, this sequence is done
if (self.index >= len(self.taskList)):
TaskManager.notify.debug('sequence done: ' + self.name)
frameFinished = 1
taskDoneStatus = done
return taskDoneStatus
task = Task(func)
task.name = 'sequence'
task.taskList = taskList
task.prevIndex = -1
task.index = 0
return task
def resetSequence(task):
# Should this automatically be done as part of spawnTaskNamed?
# Or should one have to create a new task instance every time
# one wishes to spawn a task (currently sequences and can
# only be fired off once
task.index = 0
task.prevIndex = -1
def loop(*taskList):
return make_loop(taskList)
def make_loop(taskList):
def func(self):
frameFinished = 0
taskDoneStatus = -1
while (not frameFinished):
task = self.taskList[self.index]
# If this is a new task, set its start time and frame
if (self.index > self.prevIndex):
task.setStartTimeFrame(self.time, self.frame)
self.prevIndex = self.index
# Calculate this task's time since it started
task.setCurrentTimeFrame(self.time, self.frame)
# Execute the current task
ret = task(task)
# Check the return value from the task
# If this current task wants to continue,
# come back to it next frame
if (ret == cont):
taskDoneStatus = cont
frameFinished = 1
# If this task is done, increment the index so that next frame
# we will start executing the next task on the list
# TODO: we should go to the next frame now
elif (ret == done):
self.index = self.index + 1
taskDoneStatus = cont
frameFinished = 0
# If this task wants to exit, the sequence exits
elif (ret == exit):
taskDoneStatus = exit
frameFinished = 1
# If we got to the end of the list, wrap back around
if (self.index >= len(self.taskList)):
self.prevIndex = -1
self.index = 0
frameFinished = 1
return taskDoneStatus
task = Task(func)
task.name = 'loop'
task.taskList = taskList
task.prevIndex = -1
task.index = 0
return task
class TaskPriorityList(list):
def __init__(self, priority):
self.__priority = priority
self.__emptyIndex = 0
def getPriority(self):
return self.__priority
def getEmptyIndex(self):
return self.__emptyIndex
def setEmptyIndex(self, index):
self.__emptyIndex = index
def add(self, task):
if (self.__emptyIndex >= len(self)):
self.append(task)
self.__emptyIndex += 1
else:
self[self.__emptyIndex] = task
self.__emptyIndex += 1
def remove(self, i):
assert(i <= len(self))
if (len(self) == 1) and (i == 1):
self[i] = None
self.__emptyIndex = 0
else:
# Swap the last element for this one
lastElement = self[self.__emptyIndex-1]
self[i] = lastElement
self[self.__emptyIndex-1] = None
self.__emptyIndex -= 1
class TaskManager:
notify = None
def __init__(self):
self.running = 0
self.stepping = 0
self.taskList = []
self.newTasks = []
self.doLaterList = []
self.currentTime, self.currentFrame = self.__getTimeFrame()
if (TaskManager.notify == None):
TaskManager.notify = directNotify.newCategory("TaskManager")
self.taskTimerVerbose = 0
self.extendedExceptions = 0
self.fKeyboardInterrupt = 0
self.interruptCount = 0
self.pStatsTasks = 0
self.resumeFunc = None
self.fVerbose = 0
self.nameDict = {}
self.add(self.__doLaterProcessor, "doLaterProcessor")
# Dictionary of task name to list of tasks with that name
def stepping(self, value):
self.stepping = value
def setVerbose(self, value):
self.fVerbose = value
messenger.send('TaskManager-setVerbose', sentArgs = [value])
def keyboardInterruptHandler(self, signalNumber, stackFrame):
self.fKeyboardInterrupt = 1
self.interruptCount += 1
if self.interruptCount == 2:
# The user must really want to interrupt this process
# Next time around use the default interrupt handler
signal.signal(signal.SIGINT, signal.default_int_handler)
def hasTaskNamed(self, taskName):
# Get the tasks with this name
tasks = self.nameDict.get(taskName)
# If we found some, see if any of them are still active (not removed)
if tasks:
for task in tasks:
if not task.isRemoved():
return 1
# Didnt find any, return 0
return 0
def getTasksNamed(self, taskName):
# Get the tasks with this name
tasks = self.nameDict.get(taskName, [])
# Filter out the tasks that have been removed
if tasks:
tasks = filter(lambda task: not task.isRemoved(), tasks)
return tasks
def __doLaterProcessor(self, task):
# Make a temp list of all the dolaters that expired this time
# through so we can remove them after we are done with the
# for loop. Removing them during the for loop is a bad idea
removedTasks = []
for dl in self.doLaterList:
if dl.isRemoved():
removedTasks.append(dl)
continue
# If the time now is less than the start of the doLater + delay
# then we are not ready yet, continue to next one
if task.time < dl.starttime + dl.delayTime:
# Since the list is sorted, the first one we get to, that
# is not ready to go, we can return
break
else:
removedTasks.append(dl)
dl.setStartTimeFrame(self.currentTime, self.currentFrame)
self.newTasks.append(dl)
continue
if removedTasks:
self.doLaterList = unique(self.doLaterList, removedTasks)
return cont
def __spawnDoLater(self, task):
if TaskManager.notify.getDebug():
TaskManager.notify.debug('spawning doLater named: ' + task.name)
# Add this task to the nameDict
nameList = ifAbsentPut(self.nameDict, task.name, [])
nameList.append(task)
task.setStartTimeFrame(self.currentTime, self.currentFrame)
# search from the beginning of the list to put this doLater in
# the list in order of execution from earliest to latest
# Assume it goes last unless we break out early
index = len(self.doLaterList) + 1
for i in range(len(self.doLaterList)):
dl = self.doLaterList[i]
remainingTime = ((dl.starttime + dl.delayTime) - self.currentTime)
if task.delayTime < remainingTime:
index = i
break
self.doLaterList.insert(index, task)
if self.fVerbose:
# Alert the world, a new task is born!
messenger.send('TaskManager-spawnDoLater',
sentArgs = [task, task.name, index])
return task
def doLater(self, delayTime, task, taskName):
task.delayTime = delayTime
task.name = taskName
return self.__spawnDoLater(task)
def doMethodLater(self, delayTime, func, taskName):
task = Task(func)
return self.doLater(delayTime, task, taskName)
def add(self, funcOrTask, name, priority = 0):
"""
Add a new task to the taskMgr.
You can add a Task object or a method that takes one argument.
"""
if isinstance(funcOrTask, Task):
funcOrTask.setPriority(priority)
return self.__spawnTaskNamed(funcOrTask, name)
elif callable(funcOrTask):
return self.__spawnMethodNamed(funcOrTask, name, priority)
else:
self.notify.error('Tried to add a task that was not a Task or a func')
def __spawnMethodNamed(self, func, name, priority=0):
task = Task(func, priority)
return self.__spawnTaskNamed(task, name)
def __spawnTaskNamed(self, task, name):
if TaskManager.notify.getDebug():
TaskManager.notify.debug('spawning task named: ' + name)
# Init params
task.name = name
task.setStartTimeFrame(self.currentTime, self.currentFrame)
nameList = ifAbsentPut(self.nameDict, name, [])
nameList.append(task)
# Put it on the list for the end of this frame
self.newTasks.append(task)
def __addNewTask(self, task):
# The taskList is really an ordered list of TaskPriorityLists
# search back from the end of the list until we find a
# taskList with a lower priority, or we hit the start of the list
taskPriority = task.getPriority()
index = len(self.taskList) - 1
while (1):
if (index < 0):
newList = TaskPriorityList(taskPriority)
newList.add(task)
# Add the new list to the beginning of the taskList
self.taskList.insert(0, newList)
break
taskListPriority = self.taskList[index].getPriority()
if (taskListPriority == taskPriority):
self.taskList[index].add(task)
break
elif (taskListPriority > taskPriority):
index = index - 1
elif (taskListPriority < taskPriority):
# Time to insert
newList = TaskPriorityList(taskPriority)
newList.add(task)
# Insert this new priority level
# If we are already at the end, just append it
if (index == len(self.taskList)-1):
self.taskList.append(newList)
else:
# Otherwise insert it
self.taskList.insert(index+1, newList)
break
if __debug__:
if self.pStatsTasks and task.name != "igloop":
# Get the PStats name for the task. By convention,
# this is everything until the first hyphen; the part
# of the task name following the hyphen is generally
# used to differentiate particular tasks that do the
# same thing to different objects.
name = task.name
hyphen = name.find('-')
if hyphen >= 0:
name = name[0:hyphen]
task.setupPStats(name)
if self.fVerbose:
# Alert the world, a new task is born!
messenger.send('TaskManager-spawnTask',
sentArgs = [task, task.name, index])
return task
def remove(self, taskOrName):
if type(taskOrName) == type(''):
return self.__removeTasksNamed(taskOrName)
elif isinstance(taskOrName, Task):
return self.__removeTasksEqual(taskOrName)
else:
self.notify.error('remove takes a string or a Task')
def removeTasksMatching(self, taskPattern):
"""removeTasksMatching(self, string taskPattern)
Removes tasks whose names match the pattern, which can include
standard shell globbing characters like *, ?, and [].
"""
if TaskManager.notify.getDebug():
TaskManager.notify.debug('removing tasks matching: ' + taskPattern)
num = 0
keyList = filter(lambda key: fnmatch.fnmatchcase(key, taskPattern), self.nameDict.keys())
for key in keyList:
num += self.__removeTasksNamed(key)
return num
def __removeTasksEqual(self, task):
if TaskManager.notify.getDebug():
TaskManager.notify.debug('__removeTasksEqual: removing task: %s' % (task))
taskName = task.name
# Remove this task from the nameDict (should be a short list)
self.__removeTaskFromNameDict(task)
# Flag the task for removal from the real list
task.remove()
# Cleanup stuff
task.finishTask(self.fVerbose)
return 1
def __removeTasksNamed(self, taskName):
if TaskManager.notify.getDebug():
TaskManager.notify.debug('__removeTasksNamed: removing tasks named: %s' % (taskName))
if not self.nameDict.has_key(taskName):
return 0
for task in self.nameDict[taskName]:
# Flag for removal
task.remove()
# Cleanup stuff
task.finishTask(self.fVerbose)
# Record the number of tasks removed
num = len(self.nameDict[taskName])
# Blow away the nameDict entry completely
del self.nameDict[taskName]
return num
def __removeTaskFromNameDict(self, task):
taskName = task.name
# If this is the only task with that name, remove the dict entry
tasksWithName = self.nameDict.get(taskName)
if tasksWithName:
tasksWithName.remove(task)
if len(tasksWithName) == 0:
del self.nameDict[taskName]
def __executeTask(self, task, currentTime, currentFrame):
task.setCurrentTimeFrame(currentTime, currentFrame)
if not self.taskTimerVerbose:
# don't record timing info
ret = task(task)
else:
# Run the task and check the return value
if task.pstats:
task.pstats.start()
startTime = time.clock()
ret = task(task)
endTime = time.clock()
if task.pstats:
task.pstats.stop()
# Record the dt
dt = endTime - startTime
task.dt = dt
# See if this is the new max
if dt > task.maxDt:
task.maxDt = dt
# Record the running total of all dts so we can compute an average
task.runningTotal = task.runningTotal + dt
if (task.frame > 0):
task.avgDt = (task.runningTotal / task.frame)
else:
task.avgDt = 0
return ret
def step(self):
if TaskManager.notify.getDebug():
TaskManager.notify.debug('step')
self.currentTime, self.currentFrame = self.__getTimeFrame()
# Replace keyboard interrupt handler during task list processing
# so we catch the keyboard interrupt but don't handle it until
# after task list processing is complete.
self.fKeyboardInterrupt = 0
self.interruptCount = 0
signal.signal(signal.SIGINT, self.keyboardInterruptHandler)
# Traverse the task list in order because it is in priority order
for taskPriList in self.taskList:
# Traverse the taskPriList with an iterator
i = 0
while (i < len(taskPriList)):
task = taskPriList[i]
# See if we are at the end of the real tasks
if task is None:
TaskManager.notify.debug('step: end of priList %s' % (taskPriList.getPriority()))
break
# See if this task has been removed in show code
if task.isRemoved():
TaskManager.notify.debug('step: task is flagged for removal %s' % (task))
task.finishTask(self.fVerbose)
taskPriList.remove(i)
# Do not increment the iterator
continue
# Now actually execute the task
ret = self.__executeTask(task, self.currentTime, self.currentFrame)
# See if the task is done
if (ret == cont):
# Leave it for next frame, its not done yet
pass
elif ((ret == done) or (ret == exit)):
TaskManager.notify.debug('step: task is finished %s' % (task))
# Remove the task
if not task.isRemoved():
task.remove()
task.finishTask(self.fVerbose)
self.__removeTaskFromNameDict(task)
taskPriList.remove(i)
# Do not increment the iterator
continue
else:
raise StandardError, "Task named %s did not return cont, exit, or done" % task.name
# Move to the next element
i += 1
# Add all the new tasks now
for task in self.newTasks:
TaskManager.notify.debug('step: adding new task to list %s' % (task))
self.__addNewTask(task)
# Reset for next frame
self.newTasks = []
# Restore default interrupt handler
signal.signal(signal.SIGINT, signal.default_int_handler)
if self.fKeyboardInterrupt:
raise KeyboardInterrupt
return
def run(self):
# Set the clock to have last frame's time in case we were
# Paused at the prompt for a long time
t = globalClock.getFrameTime()
timeDelta = t - globalClock.getRealTime()
globalClock.setRealTime(t)
messenger.send("resetClock", [timeDelta])
if self.resumeFunc != None:
self.resumeFunc()
if self.stepping:
self.step()
else:
self.running = 1
while self.running:
try:
self.step()
except KeyboardInterrupt:
self.stop()
except:
if self.extendedExceptions:
self.stop()
print_exc_plus()
else:
raise
def stop(self):
# Set a flag so we will stop before beginning next frame
self.running = 0
def replaceMethod(self, oldMethod, newFunction):
import new
for taskPriList in self.taskList:
for task in taskPriList:
if task is None:
break
method = task.__call__
if (type(method) == types.MethodType):
function = method.im_func
else:
function = method
#print ('function: ' + `function` + '\n' +
# 'method: ' + `method` + '\n' +
# 'oldMethod: ' + `oldMethod` + '\n' +
# 'newFunction: ' + `newFunction` + '\n')
if (function == oldMethod):
newMethod = new.instancemethod(newFunction,
method.im_self,
method.im_class)
task.__call__ = newMethod
# Found it return true
return 1
return 0
def __repr__(self):
import fpformat
taskNameWidth = 32
dtWidth = 10
priorityWidth = 10
totalDt = 0
totalAvgDt = 0
str = ('taskList'.ljust(taskNameWidth)
+ 'dt(ms)'.rjust(dtWidth)
+ 'avg'.rjust(dtWidth)
+ 'max'.rjust(dtWidth)
+ 'priority'.rjust(priorityWidth)
+ '\n')
str = str + '---------------------------------------------------------------\n'
for taskPriList in self.taskList:
priority = `taskPriList.getPriority()`
for task in taskPriList:
if task is None:
break
totalDt = totalDt + task.dt
totalAvgDt = totalAvgDt + task.avgDt
if task.isRemoved():
taskName = '(R)' + task.name
else:
taskName = task.name
if (self.taskTimerVerbose):
str = str + (taskName.ljust(taskNameWidth)
+ fpformat.fix(task.dt*1000, 2).rjust(dtWidth)
+ fpformat.fix(task.avgDt*1000, 2).rjust(dtWidth)
+ fpformat.fix(task.maxDt*1000, 2).rjust(dtWidth)
+ priority.rjust(priorityWidth)
+ '\n')
else:
str = str + (task.name.ljust(taskNameWidth)
+ '----'.rjust(dtWidth)
+ '----'.rjust(dtWidth)
+ '----'.rjust(dtWidth)
+ priority.rjust(priorityWidth)
+ '\n')
str = str + '---------------------------------------------------------------\n'
str = str + ' doLaterList\n'
str = str + '---------------------------------------------------------------\n'
for task in self.doLaterList:
remainingTime = ((task.starttime + task.delayTime) - self.currentTime)
if task.isRemoved():
taskName = '(R)' + task.name
else:
taskName = task.name
str = str + (' ' + taskName.ljust(taskNameWidth-2)
+ fpformat.fix(remainingTime, 2).rjust(dtWidth)
+ '\n')
str = str + '---------------------------------------------------------------\n'
if (self.taskTimerVerbose):
str = str + ('total'.ljust(taskNameWidth)
+ fpformat.fix(totalDt*1000, 2).rjust(dtWidth)
+ fpformat.fix(totalAvgDt*1000, 2).rjust(dtWidth)
+ '\n')
else:
str = str + ('total'.ljust(taskNameWidth)
+ '----'.rjust(dtWidth)
+ '----'.rjust(dtWidth)
+ '\n')
return str
def resetStats(self):
# WARNING: this screws up your do-later timings
for task in self.taskList:
task.dt = 0
task.avgDt = 0
task.maxDt = 0
task.runningTotal = 0
task.setStartTimeFrame(self.currentTime, self.currentFrame)
def popupControls(self):
import TaskManagerPanel
return TaskManagerPanel.TaskManagerPanel(self)
def __getTimeFrame(self):
# WARNING: If you are testing tasks without an igloop,
# you must manually tick the clock
# Ask for the time last frame
return globalClock.getFrameTime(), globalClock.getFrameCount()