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#!/usr/bin/env python
# simple.py -- basic ppamltracer-python example
# This file is in the public domain.
import os
import sys
from ppamltracer import Tracer
def main():
# Disable buffering on stdout so we can see the numbers as they are printed.
sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)
# Start ppamltracer.
with Tracer("/tmp/simple_report") as tracer:
# Register the factorial phase.
with tracer.create_phase("fact") as phase:
# Print factorials.
print "Factorials:",
for i in range(21):
print fact(phase, i),
print
# Register the Fibonacci phase.
with tracer.create_phase("fib") as phase:
# Print Fibonacci numbers.
print "Fibonacci numbers: ",
for i in range(24):
print fib(phase, i),
print
def fact(phase, n):
# Record that we're running inside the factorial phase.
with phase.running():
# Compute the factorial.
if n == 0:
return 1
else:
return n * fact(phase, n - 1)
def fib(phase, n):
# Record that we're running inside the Fibonacci phase.
with phase.running():
# Compute the nth Fibonacci number.
if n == 0 or n == 1:
return n
else:
return fib(phase, n - 1) + fib(phase, n - 2)
if __name__ == '__main__':
main()
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