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# -*- coding: utf-8; -*-
"""
Copyright (c) 2018 Rolf Hempel, rolf6419@gmx.de
This file is part of the PlanetarySystemStacker tool (PSS).
https://github.com/Rolf-Hempel/PlanetarySystemStacker
PSS is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with PSS. If not, see <http://www.gnu.org/licenses/>.
"""
from time import time, sleep
from collections import OrderedDict
from exceptions import ArgumentError
from miscellaneous import Miscellaneous
class timer(object):
"""
Measure execution times of code sections. Several timers can be used at the same time. Timers
can be created, incremented, and deleted.
"""
def __init__(self):
"""
Initialize the timer object.
"""
self.counters = OrderedDict()
def create(self, name):
"""
Create a named timer, and start it.
:param name: Name of the timer
:return: -
"""
if name in self.counters.keys():
raise ArgumentError("Attempt to initialize timer with existing name")
else:
self.counters[name] = [0., time()]
def create_no_check(self, name):
"""
If a named timer does not exist, create one. If it exists, reset and start it.
:param name: Name of the timer
:return: -
"""
self.counters[name] = [0., time()]
def delete(self, name):
"""
Delete a named timer.
:param name: Name of the timer
:return: -
"""
if name not in self.counters.keys():
raise ArgumentError("Attempt to delete timer with undefined name")
else:
del self.counters[name]
def exists(self, name):
"""
Find out if a named timer with a given name already exists.
:param name: Name of the timer
:return: True, if the timer exists; otherwise False.
"""
return name in self.counters.keys()
def start(self, name):
"""
Start a timer.
:param name: Name of the timer
:return: -
"""
if name not in self.counters.keys():
raise ArgumentError("Attempt to start timer with undefined name")
else:
self.counters[name][1] = time()
def stop(self, name):
"""
Stop a timer.
:param name: Name of the timer
:return: Elapsed time accumulated during start/stop intervals of this timer so far.
"""
if name not in self.counters.keys():
raise ArgumentError("Attempt to stop timer with undefined name")
else:
self.counters[name][0] += time() - self.counters[name][1]
return self.counters[name][0]
def read(self, name):
"""
Read out a timer.
:param name: Name of the timer
:return: Elapsed time accumulated during start/stop intervals of this timer so far.
"""
if name not in self.counters.keys():
raise ArgumentError("Attempt to read out timer with undefined name")
else:
return self.counters[name][0]
def reset(self, name):
"""
Reset a timer to zero without deleting it.
:param name: Name of the timer.
:return: -
"""
if name not in self.counters.keys():
raise ArgumentError("Attempt to reset timer with undefined name")
else:
self.counters[name][0] = 0.
def print(self):
print("--------------------------------------------------\nStatus of time counters:")
for name in self.counters.keys():
print("{0:40} {1:8.3f}".format(name, self.counters[name][0]))
print("--------------------------------------------------")
def protocol(self, logfile):
Miscellaneous.protocol("", logfile, precede_with_timestamp=False)
Miscellaneous.protocol(" --------------------------------------------------\n"
" Status of time counters:", logfile,
precede_with_timestamp=False)
for name in self.counters.keys():
Miscellaneous.protocol(
" {0:40} {1:8.3f}".format(name, self.counters[name][0]), logfile,
precede_with_timestamp=False)
Miscellaneous.protocol(" --------------------------------------------------\n",
logfile, precede_with_timestamp=False)
if __name__ == "__main__":
my_timer = timer()
my_timer.create('Second')
my_timer.create('First')
try:
my_timer.create('First')
except ArgumentError as e:
print(e.message)
my_timer.start('First')
sleep(0.1)
print("First timer: " + str(my_timer.stop('First')))
my_timer.start('First')
sleep(0.5)
print("First timer: " + str(my_timer.stop('First')))
start = time()
sleep(0.1)
print("Elapsed time (without timer): " + str(time() - start))
my_timer.start('Second')
sleep(0.1)
print("Second timer: " + str(my_timer.stop('Second')))
my_timer.reset('First')
my_timer.start('First')
sleep(0.5)
print("First timer: " + str(my_timer.stop('First')))
my_timer.print()
my_timer.delete('First')
try:
my_timer.read('First')
except ArgumentError as e:
print(e.message)
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