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#!/usr/bin/env python
# Copyright (C) 2012-2014 Bastian Kleineidam
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
Analyze a memory dump by the meliae module.
"""
import sys
import os
import codecs
import html
from linkcheck import strformat
def main(filename):
om = print_memorydump(filename)
dirname, basename = os.path.split(filename)
basename = os.path.splitext(basename)[0]
basedir = os.path.join(dirname, basename)
if not os.path.isdir(basedir):
os.mkdir(basedir)
write_htmlfiles(om, basedir)
def print_memorydump(filename):
from meliae import loader
om = loader.load(filename, collapse=True)
om.remove_expensive_references()
print(om.summarize())
return om
def write_htmlfiles(om, basedir):
om.compute_parents()
open_files = {}
for obj in om.objs.itervalues():
fp = get_file(obj.type_str, open_files, basedir)
write_html_obj(fp, obj, om.objs)
close_files(open_files)
def get_file(type_str, open_files, basedir):
"""Get already opened file, or open and initialize a new one."""
if type_str not in open_files:
filename = type_str + ".html"
encoding = "utf-8"
fd = codecs.open(os.path.join(basedir, filename), "w", encoding)
open_files[type_str] = fd
write_html_header(fd, type_str, encoding)
return open_files[type_str]
def close_files(open_files):
for fp in open_files.values():
write_html_footer(fp)
fp.close()
HtmlHeader = """
<!doctype html>
<head>
<meta charset="%s">
</head>
<body>
"""
def write_html_header(fp, type_str, encoding):
fp.write(HtmlHeader % encoding)
fp.write("<h1>Type %s</h1>\n" % type_str)
fp.write(
"<table><tr><th>Address</th><th>Name</th><th>Size</th><th>Parents</th>"
"<th>References</th></tr>\n"
)
def get_children(obj, objs):
res = []
for address in obj.children:
if address in objs:
child = objs[address]
url = "#%d" % address
if child.type_str != obj.type_str:
url = child.type_str + ".html" + url
entry = '<a href="%s">%d</a>' % (url, address)
else:
entry = "%d" % address
res.append(entry)
return res
def get_parents(obj, objs):
res = []
for address in obj.parents:
if address in objs:
parent = objs[address]
url = "#%d" % address
if parent.type_str != obj.type_str:
url = parent.type_str + ".html" + url
entry = '<a href="%s">%d</a>' % (url, address)
else:
entry = "%d" % address
res.append(entry)
return res
def write_html_obj(fp, obj, objs):
if obj.value is None:
value = "None"
else:
value = html.escape(str(obj.value))
attrs = dict(
address=obj.address,
size=strformat.strsize(obj.size),
children=",".join(get_children(obj, objs)),
parents=",".join(get_parents(obj, objs)),
value=value,
)
fp.write(
"<tr><td>%(address)d</td><td>%(value)s</td><td>%(size)s</td>"
"<td>%(children)s</td></tr>\n" % attrs
)
def write_html_footer(fp):
fp.write("</table></body></html>")
if __name__ == "__main__":
filename = sys.argv[1]
main(filename)
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