mirror of
https://github.com/eledio-devices/thirdparty-littlefs.git
synced 2025-10-31 00:32:38 +01:00
50ad2adc96
This required a patch to the --diff flag for the scripts to ignore
a missing file. This enables the useful one liner for making comparisons
with potentially missing previous versions:
./scripts/code.py lfs.o -d lfs.o.code.csv -o lfs.o.code.csv
function (0 added, 0 removed) old new diff
TOTAL 25476 25476 +0
One downside, these previous files are easy to delete as a part of make
clean, which limits their usefulness for comparing configuration
changes...
241 lines
8.5 KiB
Python
Executable File
241 lines
8.5 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
#
|
|
# Script to find data size at the function level. Basically just a bit wrapper
|
|
# around nm with some extra conveniences for comparing builds. Heavily inspired
|
|
# by Linux's Bloat-O-Meter.
|
|
#
|
|
|
|
import os
|
|
import glob
|
|
import itertools as it
|
|
import subprocess as sp
|
|
import shlex
|
|
import re
|
|
import csv
|
|
import collections as co
|
|
|
|
|
|
OBJ_PATHS = ['*.o']
|
|
|
|
def collect(paths, **args):
|
|
results = co.defaultdict(lambda: 0)
|
|
pattern = re.compile(
|
|
'^(?P<size>[0-9a-fA-F]+)' +
|
|
' (?P<type>[%s])' % re.escape(args['type']) +
|
|
' (?P<func>.+?)$')
|
|
for path in paths:
|
|
# note nm-tool may contain extra args
|
|
cmd = args['nm_tool'] + ['--size-sort', path]
|
|
if args.get('verbose'):
|
|
print(' '.join(shlex.quote(c) for c in cmd))
|
|
proc = sp.Popen(cmd,
|
|
stdout=sp.PIPE,
|
|
stderr=sp.PIPE if not args.get('verbose') else None,
|
|
universal_newlines=True)
|
|
for line in proc.stdout:
|
|
m = pattern.match(line)
|
|
if m:
|
|
results[(path, m.group('func'))] += int(m.group('size'), 16)
|
|
proc.wait()
|
|
if proc.returncode != 0:
|
|
if not args.get('verbose'):
|
|
for line in proc.stderr:
|
|
sys.stdout.write(line)
|
|
sys.exit(-1)
|
|
|
|
flat_results = []
|
|
for (file, func), size in results.items():
|
|
# map to source files
|
|
if args.get('build_dir'):
|
|
file = re.sub('%s/*' % re.escape(args['build_dir']), '', file)
|
|
# discard internal functions
|
|
if not args.get('everything'):
|
|
if func.startswith('__'):
|
|
continue
|
|
# discard .8449 suffixes created by optimizer
|
|
func = re.sub('\.[0-9]+', '', func)
|
|
flat_results.append((file, func, size))
|
|
|
|
return flat_results
|
|
|
|
def main(**args):
|
|
# find sizes
|
|
if not args.get('use', None):
|
|
# find .o files
|
|
paths = []
|
|
for path in args['obj_paths']:
|
|
if os.path.isdir(path):
|
|
path = path + '/*.o'
|
|
|
|
for path in glob.glob(path):
|
|
paths.append(path)
|
|
|
|
if not paths:
|
|
print('no .obj files found in %r?' % args['obj_paths'])
|
|
sys.exit(-1)
|
|
|
|
results = collect(paths, **args)
|
|
else:
|
|
with open(args['use']) as f:
|
|
r = csv.DictReader(f)
|
|
results = [
|
|
( result['file'],
|
|
result['function'],
|
|
int(result['data_size']))
|
|
for result in r]
|
|
|
|
total = 0
|
|
for _, _, size in results:
|
|
total += size
|
|
|
|
# find previous results?
|
|
if args.get('diff'):
|
|
try:
|
|
with open(args['diff']) as f:
|
|
r = csv.DictReader(f)
|
|
prev_results = [
|
|
( result['file'],
|
|
result['function'],
|
|
int(result['data_size']))
|
|
for result in r]
|
|
except FileNotFoundError:
|
|
prev_results = []
|
|
|
|
prev_total = 0
|
|
for _, _, size in prev_results:
|
|
prev_total += size
|
|
|
|
# write results to CSV
|
|
if args.get('output'):
|
|
with open(args['output'], 'w') as f:
|
|
w = csv.writer(f)
|
|
w.writerow(['file', 'function', 'data_size'])
|
|
for file, func, size in sorted(results):
|
|
w.writerow((file, func, size))
|
|
|
|
# print results
|
|
def dedup_entries(results, by='function'):
|
|
entries = co.defaultdict(lambda: 0)
|
|
for file, func, size in results:
|
|
entry = (file if by == 'file' else func)
|
|
entries[entry] += size
|
|
return entries
|
|
|
|
def diff_entries(olds, news):
|
|
diff = co.defaultdict(lambda: (0, 0, 0, 0))
|
|
for name, new in news.items():
|
|
diff[name] = (0, new, new, 1.0)
|
|
for name, old in olds.items():
|
|
_, new, _, _ = diff[name]
|
|
diff[name] = (old, new, new-old, (new-old)/old if old else 1.0)
|
|
return diff
|
|
|
|
def sorted_entries(entries):
|
|
if args.get('size_sort'):
|
|
return sorted(entries, key=lambda x: (-x[1], x))
|
|
elif args.get('reverse_size_sort'):
|
|
return sorted(entries, key=lambda x: (+x[1], x))
|
|
else:
|
|
return sorted(entries)
|
|
|
|
def sorted_diff_entries(entries):
|
|
if args.get('size_sort'):
|
|
return sorted(entries, key=lambda x: (-x[1][1], x))
|
|
elif args.get('reverse_size_sort'):
|
|
return sorted(entries, key=lambda x: (+x[1][1], x))
|
|
else:
|
|
return sorted(entries, key=lambda x: (-x[1][3], x))
|
|
|
|
def print_header(by=''):
|
|
if not args.get('diff'):
|
|
print('%-36s %7s' % (by, 'size'))
|
|
else:
|
|
print('%-36s %7s %7s %7s' % (by, 'old', 'new', 'diff'))
|
|
|
|
def print_entries(by='function'):
|
|
entries = dedup_entries(results, by=by)
|
|
|
|
if not args.get('diff'):
|
|
print_header(by=by)
|
|
for name, size in sorted_entries(entries.items()):
|
|
print("%-36s %7d" % (name, size))
|
|
else:
|
|
prev_entries = dedup_entries(prev_results, by=by)
|
|
diff = diff_entries(prev_entries, entries)
|
|
print_header(by='%s (%d added, %d removed)' % (by,
|
|
sum(1 for old, _, _, _ in diff.values() if not old),
|
|
sum(1 for _, new, _, _ in diff.values() if not new)))
|
|
for name, (old, new, diff, ratio) in sorted_diff_entries(
|
|
diff.items()):
|
|
if ratio or args.get('all'):
|
|
print("%-36s %7s %7s %+7d%s" % (name,
|
|
old or "-",
|
|
new or "-",
|
|
diff,
|
|
' (%+.1f%%)' % (100*ratio) if ratio else ''))
|
|
|
|
def print_totals():
|
|
if not args.get('diff'):
|
|
print("%-36s %7d" % ('TOTAL', total))
|
|
else:
|
|
ratio = (total-prev_total)/prev_total if prev_total else 1.0
|
|
print("%-36s %7s %7s %+7d%s" % (
|
|
'TOTAL',
|
|
prev_total if prev_total else '-',
|
|
total if total else '-',
|
|
total-prev_total,
|
|
' (%+.1f%%)' % (100*ratio) if ratio else ''))
|
|
|
|
if args.get('quiet'):
|
|
pass
|
|
elif args.get('summary'):
|
|
print_header()
|
|
print_totals()
|
|
elif args.get('files'):
|
|
print_entries(by='file')
|
|
print_totals()
|
|
else:
|
|
print_entries(by='function')
|
|
print_totals()
|
|
|
|
if __name__ == "__main__":
|
|
import argparse
|
|
import sys
|
|
parser = argparse.ArgumentParser(
|
|
description="Find data size at the function level.")
|
|
parser.add_argument('obj_paths', nargs='*', default=OBJ_PATHS,
|
|
help="Description of where to find *.o files. May be a directory \
|
|
or a list of paths. Defaults to %r." % OBJ_PATHS)
|
|
parser.add_argument('-v', '--verbose', action='store_true',
|
|
help="Output commands that run behind the scenes.")
|
|
parser.add_argument('-o', '--output',
|
|
help="Specify CSV file to store results.")
|
|
parser.add_argument('-u', '--use',
|
|
help="Don't compile and find data sizes, instead use this CSV file.")
|
|
parser.add_argument('-d', '--diff',
|
|
help="Specify CSV file to diff data size against.")
|
|
parser.add_argument('-a', '--all', action='store_true',
|
|
help="Show all functions, not just the ones that changed.")
|
|
parser.add_argument('-A', '--everything', action='store_true',
|
|
help="Include builtin and libc specific symbols.")
|
|
parser.add_argument('-s', '--size-sort', action='store_true',
|
|
help="Sort by size.")
|
|
parser.add_argument('-S', '--reverse-size-sort', action='store_true',
|
|
help="Sort by size, but backwards.")
|
|
parser.add_argument('--files', action='store_true',
|
|
help="Show file-level data sizes. Note this does not include padding! "
|
|
"So sizes may differ from other tools.")
|
|
parser.add_argument('--summary', action='store_true',
|
|
help="Only show the total data size.")
|
|
parser.add_argument('-q', '--quiet', action='store_true',
|
|
help="Don't show anything, useful with -o.")
|
|
parser.add_argument('--type', default='dDbB',
|
|
help="Type of symbols to report, this uses the same single-character "
|
|
"type-names emitted by nm. Defaults to %(default)r.")
|
|
parser.add_argument('--nm-tool', default=['nm'], type=lambda x: x.split(),
|
|
help="Path to the nm tool to use.")
|
|
parser.add_argument('--build-dir',
|
|
help="Specify the relative build directory. Used to map object files \
|
|
to the correct source files.")
|
|
sys.exit(main(**vars(parser.parse_args())))
|