| #!/usr/bin/env python | |
| import os | |
| import sys | |
| import argparse | |
| import subprocess | |
| parser = argparse.ArgumentParser() | |
| parser.add_argument('--start', type=int, default=0) | |
| parser.add_argument('--end', type=int, default=(1 << 32)) | |
| parser.add_argument('command', nargs='+') | |
| args = parser.parse_args() | |
| start = args.start | |
| end = args.end | |
| print("Bisect Starting!") | |
| print("Start: %d" % start) | |
| print("End: %d" % end) | |
| last = None | |
| while start != end and start != end-1: | |
| count = start + (end - start)/2 | |
| print("Visiting Count: %d with (Start, End) = (%d,%d)" % (count, start, end)) | |
| cmd = [x % {'count':count} for x in args.command] | |
| print cmd | |
| result = subprocess.call(cmd) | |
| if result == 0: | |
| print(" PASSES! Setting start to count") | |
| start = count | |
| else: | |
| print(" FAILS! Setting end to count") | |
| end = count | |
| print("Last good count: %d" % start) |