dwarf-assembly/stats/fde_stats.py

107 lines
3.4 KiB
Python
Executable File

#!/usr/bin/env python3
from stats_accu import StatsAccumulator
import gather_stats
import argparse
import sys
class Config:
def __init__(self):
args = self.parse_args()
self._cores = args.cores
self.feature = args.feature
if args.feature == 'gather':
self.output = args.output
elif args.feature == 'sample':
self.size = int(args.size)
self.output = args.output
elif args.feature == 'analyze':
self.data_file = args.data_file
@property
def cores(self):
if self._cores <= 0:
return None
return self._cores
def parse_args(self):
parser = argparse.ArgumentParser(
description="Gather statistics about system-related ELFs")
parser.add_argument('--cores', '-j', default=1, type=int,
help=("Use N cores for processing. Defaults to "
"1. 0 to use up all cores."))
subparsers = parser.add_subparsers(help='Subcommands')
# Sample stats
parser_sample = subparsers.add_parser(
'sample',
help='Same as gather, but for a random subset of files')
parser_sample.set_defaults(feature='sample')
parser_sample.add_argument('--size', '-n',
default=1000,
help=('Pick this number of files'))
parser_sample.add_argument('--output', '-o',
default='elf_data',
help=('Output data to this file. Defaults '
'to "elf_data"'))
# Gather stats
parser_gather = subparsers.add_parser(
'gather',
help=('Gather system data into a file, to allow multiple '
'analyses without re-scanning the whole system.'))
parser_gather.set_defaults(feature='gather')
parser_gather.add_argument('--output', '-o',
default='elf_data',
help=('Output data to this file. Defaults '
'to "elf_data"'))
# Analyze stats
parser_analyze = subparsers.add_parser(
'analyze',
help='Analyze data gathered by a previous run.')
parser_analyze.set_defaults(feature='analyze')
parser_analyze.add_argument('data_file',
default='elf_data',
help=('Analyze this data file. Defaults '
'to "elf_data".'))
# TODO histogram?
out = parser.parse_args()
if 'feature' not in out:
print("No subcommand specified.", file=sys.stderr)
parser.print_usage(file=sys.stderr)
sys.exit(1)
return out
def main():
config = Config()
if config.feature == 'gather':
stats_accu = gather_stats.gather_system_files(config)
stats_accu.dump(config.output)
elif config.feature == 'sample':
stats_accu = gather_stats.gather_system_files(
config,
sample_size=config.size)
stats_accu.dump(config.output)
elif config.feature == 'analyze':
print("Not implemented", file=sys.stderr)
stats_accu = StatsAccumulator.load(config.data_file)
sys.exit(1)
if __name__ == '__main__':
main()