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gdb: drop python2 support

This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2020-05-27 11:20:40 +02:00
parent 43874aa7bb
commit 31ca609f8a
1 changed files with 11 additions and 12 deletions
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23
tools/gdb-sd_dump_hashmaps.py
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@ -1,15 +1,13 @@
#!/usr/bin/env python3
# SPDX-License-Identifier: LGPL-2.1+
from __future__ import print_function
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)
super().__init__("sd_dump_hashmaps", gdb.COMMAND_DATA, gdb.COMPLETE_NONE)
def invoke(self, arg, from_tty):
d = gdb.parse_and_eval("hashmap_debug_list")
@ -21,7 +19,7 @@ class sd_dump_hashmaps(gdb.Command):
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))
h = gdb.parse_and_eval(f"(HashmapBase*)((char*){int(d.cast(ulong_t))} - {debug_offset})")
if h["has_indirect"]:
storage_ptr = h["indirect"]["storage"].cast(uchar_t.pointer())
@ -34,27 +32,28 @@ class sd_dump_hashmaps(gdb.Command):
t = ["plain", "ordered", "set"][int(h["type"])]
print("{}, {}, {}, {}, {}, {}, {} ({}:{})".format(t, h["hash_ops"], bool(h["has_indirect"]), n_entries, d["max_entries"], n_buckets, d["func"], d["file"], d["line"]))
print(f'{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):
for i in range(0, n_buckets):
dib = int(dib_raw_addr[i])
histogram[dib] = histogram.get(dib, 0) + 1
for dib in sorted(iter(histogram)):
for dib in sorted(histogram):
if dib != 255:
print("{:>3} {:>8} {} of entries".format(dib, histogram[dib], 100.0*histogram[dib]/n_entries))
print(f"{dib:>3} {histogram[dib]:>8} {float(histogram[dib]/n_entries):.0%} of entries")
else:
print("{:>3} {:>8} {} of slots".format(dib, histogram[dib], 100.0*histogram[dib]/n_buckets))
print("mean DIB of entries: {}".format(sum([dib*histogram[dib] for dib in iter(histogram) if dib != 255])*1.0/n_entries))
print(f"{dib:>3} {histogram[dib]:>8} {float(histogram[dib]/n_buckets):.0%} of slots")
s = sum(dib*count for (dib, count) in histogram.items() if dib != 255) / n_entries
print(f"mean DIB of entries: {s}")
blocks = []
current_len = 1
prev = int(dib_raw_addr[0])
for i in xrange(1, n_buckets):
for i in range(1, n_buckets):
dib = int(dib_raw_addr[i])
if (dib == 255) != (prev == 255):
if prev != 255:
@ -72,7 +71,7 @@ class sd_dump_hashmaps(gdb.Command):
blocks = blocks[0:-1]
print("max block: {}".format(max(blocks, key=lambda a: a[1])))
print("sum block lens: {}".format(sum(b[1] for b in blocks)))
print("mean block len: {}".format((1.0 * sum(b[1] for b in blocks) / len(blocks))))
print("mean block len: {}".format(sum(b[1] for b in blocks) / len(blocks)))
d = d["debug_list_next"]