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filter_xroar_trace.py
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filter_xroar_trace.py
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#!/usr/bin/env python
# encoding:utf-8
"""
Filter Xroar trace files.
see README for more information.
:created: 2014 by Jens Diemer - www.jensdiemer.de
:license: GNU GPL v3 or above, see LICENSE for more details.
"""
import os
import time
import sys
import argparse
class XroarTraceFilter(object):
def __init__(self, infile, outfile):
self.infile = infile
self.outfile = outfile
def load_tracefile(self, f):
sys.stderr.write(
"\nRead %s...\n\n" % f.name
)
addr_stat = {} # TODO: Use collections.Counter
next_update = time.time() + 0.5
line_no = 0 # e.g. empty file
for line_no, line in enumerate(f):
if time.time() > next_update:
sys.stderr.write(
"\rAnalyzed %i op calls..." % line_no
)
sys.stderr.flush()
next_update = time.time() + 0.5
addr = line[:4]
addr_stat.setdefault(addr, 0)
addr_stat[addr] += 1
f.seek(0) # if also used in self.filter()
sys.stderr.write(
"\rAnalyzed %i op calls, complete.\n" % line_no
)
sys.stderr.write(
"\nThe tracefile contains %i unique addresses.\n" % len(addr_stat)
)
return addr_stat
def unique(self):
sys.stderr.write(
"\nunique %s in %s...\n\n" % (self.infile.name, self.outfile.name)
)
unique_addr = set()
total_skiped_lines = 0
skip_count = 0
last_line_no = 0
next_update = time.time() + 1
stat_out = False
for line_no, line in enumerate(self.infile):
if time.time() > next_update:
self.outfile.flush()
if stat_out:
sys.stderr.write("\r")
else:
sys.stderr.write("\n")
sys.stderr.write(
"In %i lines (%i/sec.) are %i unique address calls..." % (
line_no, (line_no - last_line_no), len(unique_addr)
)
)
stat_out = True
sys.stderr.flush()
last_line_no = line_no
next_update = time.time() + 1
addr = line[:4]
if addr in unique_addr:
total_skiped_lines += 1
skip_count += 1
continue
unique_addr.add(addr)
if skip_count != 0:
if stat_out:
# Skip info should not in the same line after stat info
sys.stderr.write("\n")
self.outfile.write(
"... [Skip %i lines] ...\n" % skip_count
)
skip_count = 0
self.outfile.write(line)
stat_out = False
self.outfile.close()
sys.stderr.write(
"%i lines was filtered.\n" % total_skiped_lines
)
def display_addr_stat(self, addr_stat, display_max=None):
if display_max is None:
sys.stdout.write(
"\nList of all called addresses:\n"
)
else:
sys.stdout.write(
"List of the %i most called addresses:\n" % display_max
)
for no, data in enumerate(sorted(self.addr_stat.items(), key=lambda x: x[1], reverse=True)):
if display_max is not None and no >= display_max:
break
sys.stdout.write(
"\tAddress %s called %s times.\n" % data
)
def get_max_count_filter(self, addr_stat, max_count=10):
sys.stderr.write(
"Filter addresses with more than %i calls:\n" % max_count
)
addr_filter = {}
for addr, count in self.addr_stat.items():
if count >= max_count:
addr_filter[addr] = count
return addr_filter
def filter(self, addr_filter):
sys.stderr.write(
"Filter %i addresses.\n" % len(addr_filter)
)
total_skiped_lines = 0
skip_count = 0
last_line_no = 0
next_update = time.time() + 1
for line_no, line in enumerate(self.infile):
if time.time() > next_update:
sys.stderr.write(
"\rFilter %i lines (%i/sec.)..." % (
line_no, (line_no - last_line_no)
)
)
sys.stderr.flush()
last_line_no = line_no
next_update = time.time() + 1
addr = line[:4]
if addr in addr_filter:
total_skiped_lines += 1
skip_count += 1
continue
if skip_count != 0:
self.outfile.write(
"... [Skip %i lines] ...\n" % skip_count
)
skip_count = 0
self.outfile.write(line)
self.outfile.close()
sys.stderr.write(
"%i lines was filtered.\n" % total_skiped_lines
)
def start_stop(self, start_addr, stop_addr):
sys.stderr.write(
"\nFilter starts with $%x and ends with $%x from %s in %s...\n\n" % (
start_addr, stop_addr,
self.infile.name, self.outfile.name
)
)
all_addresses = set()
passed_addresses = set()
start_seperator = "\n ---- [ START $%x ] ---- \n" % start_addr
end_seperator = "\n ---- [ END $%x ] ---- \n" % stop_addr
last_line_no = 0
next_update = time.time() + 1
stat_out = False
in_area = False
for line_no, line in enumerate(self.infile):
try:
addr = int(line[:4], 16)
except ValueError:
continue
passed_addresses.add(addr)
if in_area:
self.outfile.write(line)
stat_out = False
if addr == stop_addr:
sys.stderr.flush()
self.outfile.flush()
sys.stderr.write(end_seperator)
self.outfile.write(end_seperator)
sys.stderr.flush()
self.outfile.flush()
in_area = False
continue
else:
if addr == start_addr:
sys.stderr.flush()
self.outfile.flush()
sys.stderr.write(start_seperator)
self.outfile.write(start_seperator)
in_area = True
self.outfile.write(line)
sys.stderr.flush()
self.outfile.flush()
stat_out = False
continue
if time.time() > next_update:
self.outfile.flush()
if stat_out:
sys.stderr.write("\r")
else:
sys.stderr.write("\n")
sys.stderr.write(
"process %i lines (%i/sec.), wait for $%x..." % (
line_no, (line_no - last_line_no), start_addr,
)
)
passed_addresses -= all_addresses
if passed_addresses:
all_addresses.update(passed_addresses)
passed_addresses = ",".join(["$%x" % i for i in passed_addresses])
sys.stderr.write(
"\nPassed unique addresses: %s\n" % passed_addresses
)
passed_addresses = set()
else:
stat_out = True
sys.stderr.flush()
last_line_no = line_no
next_update = time.time() + 1
self.outfile.close()
def main(args):
xt = XroarTraceFilter(args.infile, args.outfile)
if args.unique:
xt.unique()
return
if args.start_stop:
xt.start_stop(*args.start_stop)
return
if args.loop_filter:
addr_stat = xt.load_tracefile(args.loop_filter)
xt.filter(addr_filter=addr_stat)
if "display" in args:
addr_stat = xt.load_tracefile(args.infile)
xt.display_addr_stat(addr_stat,
display_max=args.display
)
if args.filter:
addr_stat = xt.load_tracefile(args.infile)
addr_filter = xt.get_max_count_filter(addr_stat,
max_count=args.filter
)
xt.filter(addr_filter)
def start_stop_value(arg):
start_raw, stop_raw = arg.split("-")
start = int(start_raw.strip("$ "), 16)
stop = int(stop_raw.strip("$ "), 16)
sys.stderr.write("Use: $%x-$%x" % (start, stop))
return (start, stop)
def get_cli_args():
parser = argparse.ArgumentParser(description="Filter Xroar traces")
parser.add_argument("infile", nargs="?",
type=argparse.FileType("r"),
default=sys.stdin,
help="Xroar trace file or stdin"
)
parser.add_argument("outfile", nargs="?",
type=argparse.FileType("w"),
default=sys.stdout,
help="If given: write output in a new file else: Display it."
)
parser.add_argument("--display", metavar="MAX",
type=int, default=argparse.SUPPRESS,
nargs="?",
help="Display statistics how often a address is called.",
)
parser.add_argument("--filter", metavar="MAX",
type=int,
nargs="?",
help="Filter the trace: skip addresses that called more than given count.",
)
parser.add_argument("--unique",
action="store_true",
help="Read infile and store in outfile only unique addresses.",
)
parser.add_argument("--loop-filter", metavar="FILENAME",
type=argparse.FileType("r"),
nargs="?",
help="Live Filter with given address file.",
)
parser.add_argument("--start-stop", metavar="START-STOP",
type=start_stop_value,
nargs="?",
help="Enable trace only from $START to $STOP e.g.: --area=$4000-$5000",
)
args = parser.parse_args()
return args
if __name__ == '__main__':
# sys.argv += ["--area=broken"]
# sys.argv += ["--area=1234-5678"]
args = get_cli_args()
main(args)