diff options
Diffstat (limited to 'tools/gdb-sd_dump_hashmaps.py')
| -rw-r--r-- | tools/gdb-sd_dump_hashmaps.py | 138 |
1 files changed, 69 insertions, 69 deletions
diff --git a/tools/gdb-sd_dump_hashmaps.py b/tools/gdb-sd_dump_hashmaps.py index 4e8593f320..d245a01ca0 100644 --- a/tools/gdb-sd_dump_hashmaps.py +++ b/tools/gdb-sd_dump_hashmaps.py @@ -6,74 +6,74 @@ 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) - - 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") - 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("{}, {}, {}, {}, {}, {}, {} ({}:{})".format(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("{:>3} {:>8} {} of entries".format(dib, histogram[dib], 100.0*histogram[dib]/n_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)) - - 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: {}".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)))) - - d = d["debug_list_next"] + "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") + 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("{}, {}, {}, {}, {}, {}, {} ({}:{})".format(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("{:>3} {:>8} {} of entries".format(dib, histogram[dib], 100.0*histogram[dib]/n_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)) + + 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: {}".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)))) + + d = d["debug_list_next"] sd_dump_hashmaps() |