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17a74ddd3d
PR-URL: https://github.com/nodejs/node/pull/49639 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
69 lines
1.7 KiB
Python
69 lines
1.7 KiB
Python
# Copyright 2015 the V8 project authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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#
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# Common code for parsing --trace-gc-nvp output.
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#
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from __future__ import with_statement
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import re
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def split_nvp(s):
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t = {}
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for name, value in re.findall(r"([._\w]+)=([-\w]+(?:\.[0-9]+)?)", s):
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try:
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t[name] = float(value)
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except ValueError:
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t[name] = value
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return t
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def split_nvp_with_keys(s):
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t, k = {}, []
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for name, value in re.findall(r"([._\w]+)=([-\w]+(?:\.[0-9]+)?)", s):
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try:
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t[name] = float(value)
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except ValueError:
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t[name] = value
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k.append(name)
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return t, k
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def parse_gc_trace(input):
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# If input is string, treat it as a filename and open the file for reading.
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if isinstance(input, str):
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with open(input, 'rt') as f:
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return parse_gc_trace(f)
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# Otherwise, treat it as a file-like object.
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trace = []
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for line in input:
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info = split_nvp(line)
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if info and 'pause' in info and info['pause'] > 0:
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info['i'] = len(trace)
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trace.append(info)
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return trace
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def parse_gc_trace_with_keys(input):
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# If input is string, treat it as a filename and open the file for reading.
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if isinstance(input, str):
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with open(input, 'rt') as f:
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return parse_gc_trace_with_keys(f)
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# Otherwise, treat it as a file-like object.
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trace = []
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keys = {'i'}
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key_list = ['i']
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for line in input:
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info, info_keys = split_nvp_with_keys(line)
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if info and 'pause' in info and info['pause'] > 0:
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info['i'] = len(trace)
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trace.append(info)
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for key in info_keys:
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if key not in keys:
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keys.add(key)
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key_list.append(key)
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return trace, key_list
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