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Added build timings.

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Alex Huszagh
2021-09-04 00:14:42 -05:00
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README.md
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minimal-lexical
===============
[![Build Status](https://api.travis-ci.org/Alexhuszagh/minimal-lexical.svg?branch=master)](https://travis-ci.org/Alexhuszagh/minimal-lexical)
[![Rustc Version 1.31+](https://img.shields.io/badge/rustc-1.31+-lightgray.svg)](https://blog.rust-lang.org/2018/12/06/Rust-1.31-and-rust-2018.html)
This is a minimal version of [rust-lexical](https://github.com/Alexhuszagh/rust-lexical), meant to allow efficient round-trip float parsing. minimal-lexical implements a correct, fast float parser.
Due to the small, stable nature of minimal-lexical, it is also well-adapted to private forks. If you do privately fork minimal-lexical, I recommend you contact me via [email](mailto:ahuszagh@gmail.com) or [Twitter](https://twitter.com/KardOnIce), so I can notify you of feature updates, bug fixes, or security vulnerabilities, as well as help you implement custom feature requests. I will not use your information for any other purpose, including, but not limited to disclosing your project or organization's use of minimal-lexical.
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**Similar Projects**
For a high-level, all-in-one number conversion routines, see [rust-lexical](https://github.com/Alexhuszagh/rust-lexical). For language bindings to lexical, see [lexical-capi](https://github.com/Alexhuszagh/rust-lexical/tree/master/lexical-capi).
For a high-level, all-in-one number conversion routines, see [rust-lexical](https://github.com/Alexhuszagh/rust-lexical).
**Table Of Contents**
assets/timings_timings_posix.svg
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scripts/timings.py
Executable
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#!/usr/bin/env python
'''
timings
=======
Plot the timings from building minimal-lexical.
'''
import argparse
import json
import subprocess
import os
import matplotlib.pyplot as plt
from matplotlib import patches
from matplotlib import textpath
plt.style.use('ggplot')
scripts = os.path.dirname(os.path.realpath(__file__))
home = os.path.dirname(scripts)
def parse_args(argv=None):
'''Create and parse our command line arguments.'''
parser = argparse.ArgumentParser(description='Time building minimal-lexical.')
parser.add_argument(
'--features',
help='''optional features to add''',
default='',
)
parser.add_argument(
'--no-default-features',
help='''disable default features''',
action='store_true',
)
return parser.parse_args(argv)
def clean(directory=home):
'''Clean the project'''
os.chdir(directory)
subprocess.check_call(
['cargo', '+nightly', 'clean'],
shell=False,
stdout=subprocess.DEVNULL,
stderr=subprocess.DEVNULL,
)
def build(args):
'''Build the project and get the timings output.'''
command = 'cargo +nightly build -Z timings=json'
if args.no_default_features:
command = f'{command} --no-default-features'
if args.features:
command = f'{command} --features={args.features}'
process = subprocess.Popen(
# Use shell for faster performance.
# Spawning a new process is a **lot** slower, gives misleading info.
command,
shell=True,
stderr=subprocess.DEVNULL,
stdout=subprocess.PIPE,
)
process.wait()
data = {}
for line in iter(process.stdout.readline, b''):
line = line.decode('utf-8')
crate = json.loads(line)
name = crate['target']['name']
data[name] = (crate['duration'], crate['rmeta_time'])
process.stdout.close()
return data
def filename(basename, args):
'''Get a resilient name for the benchmark data.'''
name = basename
if args.no_default_features:
name = f'{name}_nodefault'
if args.features:
name = f'{name}_features={args.features}'
return name
def plot_timings(timings, output):
'''Plot our timings data.'''
offset = 0
text_length = 0
count = len(timings) + 1
fig, ax = plt.subplots()
bar_height = count * 0.05
def plot_timing(name):
'''Plot the timing of a specific value.'''
nonlocal count
nonlocal text_length
if name not in timings:
return
duration, rmeta = timings[name]
local_offset = offset
ax.add_patch(patches.Rectangle(
(offset, count - bar_height / 2), duration, bar_height,
alpha=0.6,
facecolor='lightskyblue',
label=name,
))
local_offset += rmeta
ax.add_patch(patches.Rectangle(
(local_offset, count - bar_height / 2), duration - rmeta, bar_height,
alpha=0.6,
facecolor='darkorchid',
label=f'{name}_rmeta',
))
local_offset += duration - rmeta
text = f'minimal-lexical {round(duration, 2)}s'
text_length = max(len(text), text_length)
ax.annotate(
text,
xy=(local_offset + 0.02, count),
xycoords='data',
horizontalalignment='left',
verticalalignment='center',
)
count -= 1
def max_duration(*keys):
'''Get the max duration from a list of keys.'''
max_time = 0
for key in keys:
if key not in timings:
continue
max_time = max(timings[key][0], max_time)
return max_time
# Plot in order of our dependencies.
plot_timing('minimal-lexical')
offset += max_duration('minimal-lexical')
title = 'Build Timings'
ax.set_title(title)
ax.set_xlabel('Time (s)')
# Hide the y-axis labels.
ax.set_yticks(list(range(1, len(timings) + 2)))
ax.yaxis.set_tick_params(which='both', length=0)
plt.setp(ax.get_yticklabels(), visible=False)
# Ensure the canvas includes all the annotations.
# 0.5 is long enough for the largest label.
plt.xlim(0, offset + 0.02 * text_length)
plt.ylim(count + 0.5, len(timings) + 1.5)
# Save the figure.
fig.savefig(output, format='svg')
fig.clf()
def plot(args):
'''Build and plot the timings for the root module.'''
clean()
timings = build(args)
path = f'{home}/assets/timings_{filename("timings", args)}_{os.name}.svg'
plot_timings(timings, path)
def main(argv=None):
'''Entry point.'''
args = parse_args(argv)
plot(args)
if __name__ == '__main__':
main()