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#!/usr/bin/env python3
# Copyright © Microsoft Corporation
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
import argparse
# Take a log file produced by GALLIUM_REFCNT_LOG, filter it to the objects that
# weren't destroyed by the end of the log, and write the results out sorted.
# Strips stacks by default to prevent OOM. Could probably be rewritten to walk
# the file twice to preserve stacks without OOM, but this was the easy way.
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--input',
action='store',
required=True,
help='path to file containing refcount log')
parser.add_argument('--output',
action='store',
required=True,
help='path to trimmed log')
parser.add_argument('--filter',
help='object type filter')
parser.add_argument('--keep-stacks',
help='keep stacks, otherwise only headers')
args = parser.parse_args()
objects = {}
with open(args.input) as in_file:
stack = []
cur_object = ''
for line in in_file:
if line[0] == '<':
parts = line.split(' ')
prev_object = cur_object
cur_object = parts[1]
if parts[3].strip() == 'Destroy':
if cur_object in objects:
del objects[cur_object]
else:
if parts[3].strip() == 'Create':
if (not args.filter) or (args.filter in parts[0]):
objects[cur_object] = []
if prev_object in objects:
objects[prev_object] += stack
stack = [line]
elif args.keep_stacks:
stack += line
with open(args.output, 'wt') as out_file:
for stack in objects.values():
for stack_line in stack:
out_file.write(stack_line)
if __name__ == '__main__':
main()
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