diff options
author | Martin Pitt <martin.pitt@ubuntu.com> | 2014-12-12 19:54:51 +0200 |
---|---|---|
committer | Martin Pitt <martin.pitt@ubuntu.com> | 2014-12-12 19:54:51 +0200 |
commit | f47781d88ca6bf69d6b1dd0703b2b283482e5c09 (patch) | |
tree | 6a8f1f74e8fba0a2c20d710848d00b0338f6e341 /tools | |
parent | 5eef597e931b0428bb984dc2bf0736d032a9198c (diff) | |
download | systemd-f47781d88ca6bf69d6b1dd0703b2b283482e5c09.tar.gz |
Imported Upstream version 218
Diffstat (limited to 'tools')
-rw-r--r-- | tools/gdb-sd_dump_hashmaps.py | 94 | ||||
-rwxr-xr-x | tools/make-directive-index.py | 2 |
2 files changed, 95 insertions, 1 deletions
diff --git a/tools/gdb-sd_dump_hashmaps.py b/tools/gdb-sd_dump_hashmaps.py new file mode 100644 index 0000000000..9ee81fb05a --- /dev/null +++ b/tools/gdb-sd_dump_hashmaps.py @@ -0,0 +1,94 @@ +# -*- Mode: python; coding: utf-8; indent-tabs-mode: nil -*- */ +# +# This file is part of systemd. +# +# Copyright 2014 Michal Schmidt +# +# systemd is free software; you can redistribute it and/or modify it +# under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation; either version 2.1 of the License, or +# (at your option) any later version. +# +# systemd 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 +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with systemd; If not, see <http://www.gnu.org/licenses/>. + +import gdb + +class sd_dump_hashmaps(gdb.Command): + "dump systemd's hashmaps" + + def __init__(self): + super(sd_dump_hashmaps, self).__init__("sd_dump_hashmaps", gdb.COMMAND_DATA, gdb.COMPLETE_NONE) + + def invoke(self, arg, from_tty): + d = gdb.parse_and_eval("hashmap_debug_list") + all_entry_sizes = gdb.parse_and_eval("all_entry_sizes") + all_direct_buckets = gdb.parse_and_eval("all_direct_buckets") + hashmap_base_t = gdb.lookup_type("HashmapBase") + uchar_t = gdb.lookup_type("unsigned char") + ulong_t = gdb.lookup_type("unsigned long") + debug_offset = gdb.parse_and_eval("(unsigned long)&((HashmapBase*)0)->debug") + + print "type, hash, indirect, entries, max_entries, buckets, creator" + while d: + h = gdb.parse_and_eval("(HashmapBase*)((char*)%d - %d)" % (int(d.cast(ulong_t)), debug_offset)) + + if h["has_indirect"]: + storage_ptr = h["indirect"]["storage"].cast(uchar_t.pointer()) + n_entries = h["indirect"]["n_entries"] + n_buckets = h["indirect"]["n_buckets"] + else: + storage_ptr = h["direct"]["storage"].cast(uchar_t.pointer()) + n_entries = h["n_direct_entries"] + n_buckets = all_direct_buckets[int(h["type"])]; + + t = ["plain", "ordered", "set"][int(h["type"])] + + print "%s, %s, %s, %d, %d, %d, %s (%s:%d)" % (t, h["hash_ops"], bool(h["has_indirect"]), n_entries, d["max_entries"], n_buckets, d["func"], d["file"], d["line"]) + + if arg != "" and n_entries > 0: + dib_raw_addr = storage_ptr + (all_entry_sizes[h["type"]] * n_buckets) + + histogram = {} + for i in xrange(0, n_buckets): + dib = int(dib_raw_addr[i]) + histogram[dib] = histogram.get(dib, 0) + 1 + + for dib in sorted(iter(histogram)): + if dib != 255: + print "%3d %8d %f%% of entries" % (dib, histogram[dib], 100.0*histogram[dib]/n_entries) + else: + print "%3d %8d %f%% of slots" % (dib, histogram[dib], 100.0*histogram[dib]/n_buckets) + print "mean DIB of entries: %f" % (sum([dib*histogram[dib] for dib in iter(histogram) if dib != 255])*1.0/n_entries) + + blocks = [] + current_len = 1 + prev = int(dib_raw_addr[0]) + for i in xrange(1, n_buckets): + dib = int(dib_raw_addr[i]) + if (dib == 255) != (prev == 255): + if prev != 255: + blocks += [[i, current_len]] + current_len = 1 + else: + current_len += 1 + + prev = dib + if prev != 255: + blocks += [[i, current_len]] + # a block may be wrapped around + if len(blocks) > 1 and blocks[0][0] == blocks[0][1] and blocks[-1][0] == n_buckets - 1: + blocks[0][1] += blocks[-1][1] + blocks = blocks[0:-1] + print "max block: %s" % max(blocks, key=lambda a: a[1]) + print "sum block lens: %d" % sum(b[1] for b in blocks) + print "mean block len: %f" % (1.0 * sum(b[1] for b in blocks) / len(blocks)) + + d = d["debug_list_next"] + +sd_dump_hashmaps() diff --git a/tools/make-directive-index.py b/tools/make-directive-index.py index 5c80a7b9e6..17b1325bba 100755 --- a/tools/make-directive-index.py +++ b/tools/make-directive-index.py @@ -141,7 +141,7 @@ TEMPLATE = '''\ </refsect1> <refsect1> - <title>command-line options</title> + <title>command line options</title> <para>Command-line options accepted by programs in the systemd suite.</para> |