Source code for spack.util.timer

# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
# SPDX-License-Identifier: (Apache-2.0 OR MIT)

"""Debug signal handler: prints a stack trace and enters interpreter.

``register_interrupt_handler()`` enables a ctrl-C handler that prints
a stack trace and drops the user into an interpreter.

import sys
import time

import spack.util.spack_json as sjson

[docs]class Timer(object): """ Simple timer for timing phases of a solve or install """ def __init__(self): self.start = time.time() self.last = self.start self.phases = {} self.end = None
[docs] def phase(self, name): last = self.last now = time.time() self.phases[name] = now - last self.last = now
@property def total(self): """Return the total time """ if self.end: return self.end - self.start return time.time() - self.start
[docs] def stop(self): """ Stop the timer to record a total time, if desired. """ self.end = time.time()
[docs] def write_json(self, out=sys.stdout): """ Write a json object with times to file """ phases = [{"name": p, "seconds": s} for p, s in self.phases.items()] times = {"phases": phases, "total": {"seconds":}} out.write(sjson.dump(times))
[docs] def write_tty(self, out=sys.stdout): now = time.time() out.write("Time:\n") for phase, t in self.phases.items(): out.write(" %-15s%.4f\n" % (phase + ":", t)) out.write("Total: %.4f\n" % (now - self.start))