mirror of
https://github.com/MobileGL-Dev/MobileGL
synced 2026-09-07 19:58:32 +09:00
swung0x48
72aa9191b4
- G1 is spelled "added == removed == resized == renamed == 0, .text delta 0", but gate_failures() took only added and removed and fired on text_delta > N: a pull build whose .text SHRANK, or whose functions were resized with zero net delta - the exact shape a null-guard or ternary rewrite produces - walked through `--threshold 0 --fail-on-symbol-set-change --fail-on-added-bytes 0` green - --fail-on-symbol-set-change now covers the four buckets the report prints, and --fail-on-added-bytes 0 means byte-identical rather than "did not grow" (a positive budget keeps the one-sided meaning). --fail-on-text-delta is the explicit spelling for a run that wants no byte budget at all - the gates read the threshold-0 buckets whatever --threshold says: --threshold is a report control, and a gate that read the thresholded resize list would have quietly weakened itself the day someone raised it. The run says so in its output - the self-test drives the three shapes that used to pass (a shrunk .text at budget 0, a resize and a rename at zero net delta) from the same canned transcripts
499 lines
26 KiB
Python
499 lines
26 KiB
Python
#!/usr/bin/env python3
|
|
# MobileGL - scripts/symbol_report.py
|
|
# Copyright (c) 2025-2026 MobileGL-Dev
|
|
# Licensed under the GNU Lesser General Public License v3.0:
|
|
# https://www.gnu.org/licenses/gpl-3.0.txt
|
|
# https://www.gnu.org/licenses/lgpl-3.0.txt
|
|
# SPDX-License-Identifier: LGPL-3.0-only
|
|
# End of Source File Header
|
|
"""Per-symbol nm/.text attribution between two libMobileGL.so builds.
|
|
|
|
P0.5's acceptance gate says every `nm --defined-only -S` delta has to be explainable per
|
|
symbol (ROADMAP.md:16). The awkward part is that de-nesting a type renames every mangled
|
|
name that mentions it - `ProgramObject::LinkArtifacts` -> `LinkArtifacts` shows up inside
|
|
every `std::vector<...>` instantiation too - so a raw nm diff of a pure move looks
|
|
catastrophic. `--strip-scope` folds those into a "renamed-only" bucket: same normalised
|
|
demangled name, byte-identical size. What is left over is the report's real content.
|
|
|
|
python3 scripts/symbol_report.py --before old.so --after new.so
|
|
python3 scripts/symbol_report.py --before old.so --after new.so \\
|
|
--strip-scope 'MobileGL::MG_State::GLState::ProgramObject::' \\
|
|
--only-names 'TypeFacts,ResourceReflection,XfbVarying,LinkArtifacts,SpirvArtifacts' \\
|
|
--markdown ~/w7/p05-symbol-report.md
|
|
|
|
GUARD RAILS - the comparison is meaningless unless both .so files were built with:
|
|
* the same CMAKE_BUILD_TYPE (the visibility presets differ between configurations,
|
|
CMakeLists.txt:578-598, so a Debug/Release pair "adds" thousands of symbols),
|
|
* MOBILEGL_ENABLE_LTO OFF on both sides (CMakeLists.txt:108,137-146 - LTO merges and
|
|
renames at will and nothing here is attributable afterwards),
|
|
* the same compiler and standard library.
|
|
The header of every report prints both paths and their byte sizes so a mismatched pair is
|
|
visible in the output rather than only in the reader's assumptions.
|
|
|
|
This tool is informational by default (ARCHITECTURE.md:507, job name `monolith-symbol-report`
|
|
ARCHITECTURE.md:568): with no gate flag it prints its report and exits 0, whatever it found.
|
|
Three flags turn it into a hard gate, and P1's G1 uses the first two - the strangler's pull build
|
|
has to stay byte-identical, and G1 spells that out as `added == removed == resized == renamed == 0`
|
|
with a `.text` delta of zero:
|
|
|
|
python3 scripts/symbol_report.py --before base.so --after head.so \
|
|
--threshold 0 --fail-on-symbol-set-change --fail-on-added-bytes 0
|
|
|
|
* `--fail-on-symbol-set-change` covers all FOUR buckets, not just added/removed: a resize at zero
|
|
net delta and a rename at zero net delta are both source changes, and both are what a guard
|
|
rewrite produces. It always compares at threshold 0, whatever `--threshold` is set to.
|
|
* `--fail-on-added-bytes 0` means byte-identical, so a SHRUNK .text fails it too; a positive
|
|
budget keeps the one-sided "must not grow by more than N" meaning. `--fail-on-text-delta` is
|
|
the explicit spelling of the zero case for a run that wants no byte budget at all.
|
|
|
|
A gate that fires still writes its Markdown and JSON first: the report IS the diagnosis, and a
|
|
CI job that failed before uploading its artifact is a job nobody can act on.
|
|
"""
|
|
|
|
import argparse
|
|
import json
|
|
import os
|
|
import re
|
|
import shutil
|
|
import subprocess
|
|
import sys
|
|
|
|
PREFIX = "symbol-report: "
|
|
|
|
# `nm --defined-only -S` prints "<addr> <size> <type> <name>", and "<addr> <type> <name>"
|
|
# for a defined symbol whose size the object file does not carry (absolute symbols,
|
|
# assembler labels).
|
|
NM_SIZED_RE = re.compile(r"^([0-9a-fA-F]+)\s+([0-9a-fA-F]+)\s+(\S)\s+(.+)$")
|
|
NM_UNSIZED_RE = re.compile(r"^([0-9a-fA-F]+)\s+(\S)\s+(.+)$")
|
|
|
|
# `size --format=sysv` prints "section size addr" rows plus a Total row.
|
|
SIZE_ROW_RE = re.compile(r"^(\S+)\s+(\d+)(?:\s+(\d+))?\s*$")
|
|
|
|
INTERESTING_SECTIONS = (".text", ".data", ".bss", ".rodata", "Total")
|
|
|
|
|
|
def say(message):
|
|
print(PREFIX + message)
|
|
|
|
|
|
def parse_nm(text):
|
|
"""nm --defined-only -S transcript -> {mangled: (type, size_or_None)}."""
|
|
symbols = {}
|
|
for line in text.splitlines():
|
|
line = line.rstrip()
|
|
if not line:
|
|
continue
|
|
match = NM_SIZED_RE.match(line)
|
|
if match:
|
|
symbols[match.group(4)] = (match.group(3), int(match.group(2), 16))
|
|
continue
|
|
match = NM_UNSIZED_RE.match(line)
|
|
if match:
|
|
symbols[match.group(3)] = (match.group(2), None)
|
|
return symbols
|
|
|
|
|
|
def parse_size(text):
|
|
"""size --format=sysv transcript -> {section: bytes}."""
|
|
sections = {}
|
|
for line in text.splitlines():
|
|
stripped = line.strip()
|
|
if not stripped or stripped.startswith("section"):
|
|
continue
|
|
match = SIZE_ROW_RE.match(stripped)
|
|
if not match:
|
|
continue
|
|
sections[match.group(1)] = int(match.group(2))
|
|
return sections
|
|
|
|
|
|
def demangle(names, cxxfilt):
|
|
"""Batch-demangle through c++filt; a plain identifier passes through unchanged."""
|
|
ordered = list(names)
|
|
if not ordered:
|
|
return {}
|
|
if not cxxfilt or not (shutil.which(cxxfilt) or os.path.isfile(cxxfilt)):
|
|
return {name: name for name in ordered}
|
|
completed = subprocess.run([cxxfilt], input="\n".join(ordered) + "\n",
|
|
stdout=subprocess.PIPE, stderr=subprocess.DEVNULL, text=True)
|
|
lines = completed.stdout.splitlines()
|
|
if len(lines) != len(ordered):
|
|
return {name: name for name in ordered}
|
|
return dict(zip(ordered, lines))
|
|
|
|
|
|
def parent_scope(prefix):
|
|
"""`A::B::C::` -> `A::B::` (drop the last named component, keep the enclosing scope).
|
|
|
|
A de-nesting moves `A::B::C::X` to `A::B::X`, so folding the two spellings together
|
|
means deleting the `C::` component, NOT the whole prefix - deleting the whole prefix
|
|
would turn the before side into a bare `X` that no after-side name matches.
|
|
"""
|
|
body = prefix[:-2] if prefix.endswith("::") else prefix
|
|
cut = body.rfind("::")
|
|
return body[:cut + 2] if cut >= 0 else ""
|
|
|
|
|
|
def normalise(name, strip_scopes, rename_map):
|
|
"""Textual folding of the demangled name: this is what makes a de-nesting a rename."""
|
|
for scope in strip_scopes:
|
|
name = name.replace(scope, parent_scope(scope))
|
|
for old, new in rename_map:
|
|
name = name.replace(old, new)
|
|
return name
|
|
|
|
|
|
def build_side(path, nm_tool, size_tool, cxxfilt, strip_scopes, rename_map, canned=None):
|
|
if canned is None:
|
|
nm_text = subprocess.run([nm_tool, "--defined-only", "-S", path],
|
|
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
|
|
text=True, check=True).stdout
|
|
size_text = subprocess.run([size_tool, "--format=sysv", path],
|
|
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
|
|
text=True, check=True).stdout
|
|
else:
|
|
nm_text, size_text = canned
|
|
|
|
raw = parse_nm(nm_text)
|
|
demangled = demangle(raw.keys(), cxxfilt)
|
|
table = {}
|
|
for mangled, (kind, size) in raw.items():
|
|
key = normalise(demangled.get(mangled, mangled), strip_scopes, rename_map)
|
|
table.setdefault(key, []).append({"mangled": mangled, "type": kind,
|
|
"size": size or 0,
|
|
"demangled": demangled.get(mangled, mangled)})
|
|
folded = {}
|
|
for key, entries in table.items():
|
|
folded[key] = {
|
|
"size": sum(e["size"] for e in entries),
|
|
"count": len(entries),
|
|
"mangled": sorted(e["mangled"] for e in entries),
|
|
"type": entries[0]["type"],
|
|
}
|
|
return folded, parse_size(size_text), len(raw)
|
|
|
|
|
|
def bucket(before, after, only_names, threshold):
|
|
def wanted(name):
|
|
return not only_names or any(n in name for n in only_names)
|
|
|
|
removed, added, resized, renamed, unchanged = [], [], [], [], 0
|
|
for name in sorted(set(before) | set(after)):
|
|
b = before.get(name)
|
|
a = after.get(name)
|
|
if b is None:
|
|
if wanted(name):
|
|
added.append({"name": name, "delta": a["size"], "before": 0, "after": a["size"]})
|
|
continue
|
|
if a is None:
|
|
if wanted(name):
|
|
removed.append({"name": name, "delta": -b["size"], "before": b["size"], "after": 0})
|
|
continue
|
|
if a["size"] != b["size"] and abs(a["size"] - b["size"]) > threshold:
|
|
if wanted(name):
|
|
resized.append({"name": name, "delta": a["size"] - b["size"],
|
|
"before": b["size"], "after": a["size"]})
|
|
continue
|
|
if a["mangled"] != b["mangled"]:
|
|
# same normalised name, byte-identical size: the pure-move signature
|
|
if wanted(name):
|
|
renamed.append({"name": name, "delta": 0,
|
|
"before": b["mangled"][0], "after": a["mangled"][0]})
|
|
continue
|
|
unchanged += 1
|
|
for group in (removed, added, resized):
|
|
group.sort(key=lambda row: (-abs(row["delta"]), row["name"]))
|
|
renamed.sort(key=lambda row: row["name"])
|
|
return removed, added, resized, renamed, unchanged
|
|
|
|
|
|
def markdown_table(title, rows, columns):
|
|
lines = ["", "### {} ({})".format(title, len(rows)), ""]
|
|
if not rows:
|
|
lines.append("_none_")
|
|
lines.append("")
|
|
return lines
|
|
lines.append("| " + " | ".join(columns) + " |")
|
|
lines.append("|" + "|".join(["---"] * len(columns)) + "|")
|
|
for row in rows:
|
|
lines.append("| " + " | ".join(str(cell).replace("|", "\\|") for cell in row) + " |")
|
|
lines.append("")
|
|
return lines
|
|
|
|
|
|
CANNED_BEFORE = ("""0000000000001000 0000000000000010 T MobileGL::MG_State::GLState::ProgramObject::LinkArtifacts::Reset()
|
|
0000000000002000 0000000000000020 T MobileGL::MG_State::GLState::ProgramObject::Link()
|
|
0000000000003000 0000000000000030 T MobileGL::Gone()
|
|
0000000000004000 0000000000000040 T MobileGL::Grew()
|
|
0000000000005000 T MobileGL::NoSize()
|
|
""", """libBefore.so :
|
|
section size addr
|
|
.text 1000 100
|
|
.data 200 2000
|
|
.bss 300 3000
|
|
Total 1500
|
|
""")
|
|
|
|
CANNED_AFTER = ("""0000000000001000 0000000000000010 T MobileGL::MG_State::GLState::LinkArtifacts::Reset()
|
|
0000000000002000 0000000000000020 T MobileGL::MG_State::GLState::ProgramObject::Link()
|
|
0000000000004000 0000000000000050 T MobileGL::Grew()
|
|
0000000000006000 0000000000000060 T MobileGL::BrandNew()
|
|
0000000000005000 T MobileGL::NoSize()
|
|
""", """libAfter.so :
|
|
section size addr
|
|
.text 1100 100
|
|
.data 200 2000
|
|
.bss 300 3000
|
|
Total 1600
|
|
""")
|
|
|
|
|
|
def gate_failures(added, removed, resized, renamed, text_delta, fail_on_added_bytes,
|
|
fail_on_symbol_set_change, fail_on_text_delta=False):
|
|
"""The reasons this run should fail, in the order they are reported. Empty means green.
|
|
|
|
Pure, and takes the buckets rather than the file paths, so the self-test can drive it from the
|
|
canned transcripts: a gate whose only test is a real build is a gate nobody re-tests.
|
|
|
|
P1's G1 is spelled `added == removed == resized == renamed == 0` and `.text` delta 0, so all
|
|
FOUR buckets are part of --fail-on-symbol-set-change and a budget of 0 bytes means zero
|
|
movement in EITHER direction. A shrunk .text and a resize with zero net delta are exactly the
|
|
shapes a guard rewrite produces, and both used to walk straight through this function.
|
|
"""
|
|
reasons = []
|
|
if fail_on_symbol_set_change and (added or removed or resized or renamed):
|
|
reasons.append(
|
|
"--fail-on-symbol-set-change: {} symbol(s) added, {} removed, {} resized, {} renamed. "
|
|
"None of that is a property of the build machine, so any change here is a source "
|
|
"change - name each one in the commit message or fix it.".format(
|
|
len(added), len(removed), len(resized), len(renamed)))
|
|
if fail_on_text_delta and text_delta != 0:
|
|
reasons.append(
|
|
"--fail-on-text-delta: .text moved by {:+d} bytes.".format(text_delta))
|
|
if fail_on_added_bytes is not None:
|
|
# A budget of zero is not "must not grow", it is "must not move": the pull build of a
|
|
# strangler that got smaller is just as much a code change as one that got bigger, and G1
|
|
# names the delta, not its sign. A positive budget keeps the older, one-sided meaning.
|
|
if fail_on_added_bytes == 0 and text_delta != 0 and not fail_on_text_delta:
|
|
reasons.append(
|
|
"--fail-on-added-bytes 0: .text moved by {:+d} bytes (a budget of 0 means the "
|
|
"section must be byte-identical, in either direction).".format(text_delta))
|
|
elif fail_on_added_bytes > 0 and text_delta > fail_on_added_bytes:
|
|
reasons.append(
|
|
"--fail-on-added-bytes {}: .text grew by {} bytes.".format(
|
|
fail_on_added_bytes, text_delta))
|
|
return reasons
|
|
|
|
|
|
def self_test():
|
|
strip = ["MobileGL::MG_State::GLState::ProgramObject::"]
|
|
before, before_sections, before_count = build_side(None, None, None, None, strip, [],
|
|
canned=CANNED_BEFORE)
|
|
after, after_sections, after_count = build_side(None, None, None, None, strip, [],
|
|
canned=CANNED_AFTER)
|
|
removed, added, resized, renamed, unchanged = bucket(before, after, [], 0)
|
|
problems = []
|
|
if before_count != 5 or after_count != 5:
|
|
problems.append("nm parse counts: {} / {} (expected 5 / 5)".format(before_count, after_count))
|
|
if [r["name"] for r in removed] != ["MobileGL::Gone()"]:
|
|
problems.append("removed bucket: {}".format([r["name"] for r in removed]))
|
|
if [r["name"] for r in added] != ["MobileGL::BrandNew()"]:
|
|
problems.append("added bucket: {}".format([r["name"] for r in added]))
|
|
if [(r["name"], r["delta"]) for r in resized] != [("MobileGL::Grew()", 0x10)]:
|
|
problems.append("resized bucket: {}".format([(r["name"], r["delta"]) for r in resized]))
|
|
# `ProgramObject::LinkArtifacts::Reset` -> `LinkArtifacts::Reset` folds to the same
|
|
# normalised name at the same size: renamed-only, not added+removed.
|
|
if [r["name"] for r in renamed] != ["MobileGL::MG_State::GLState::LinkArtifacts::Reset()"]:
|
|
problems.append("renamed bucket: {}".format([r["name"] for r in renamed]))
|
|
if unchanged != 2: # ProgramObject::Link() and NoSize()
|
|
problems.append("unchanged count: {} (expected 2)".format(unchanged))
|
|
if before_sections.get(".text") != 1000 or after_sections.get("Total") != 1600:
|
|
problems.append("size --format=sysv parse: {} / {}".format(before_sections, after_sections))
|
|
# The three gates, driven from the same canned transcripts: the after side adds one symbol,
|
|
# removes one, resizes one, renames one and grows .text by 100, so each flag must fire, each
|
|
# must stay quiet when it is not asked for, and --fail-on-added-bytes must accept a delta it
|
|
# was told to tolerate.
|
|
text_delta = after_sections.get(".text", 0) - before_sections.get(".text", 0)
|
|
if gate_failures(added, removed, resized, renamed, text_delta, None, False):
|
|
problems.append("gates fired with no flag set")
|
|
if len(gate_failures(added, removed, resized, renamed, text_delta, None, True)) != 1:
|
|
problems.append("--fail-on-symbol-set-change did not fire on 1 added + 1 removed")
|
|
if len(gate_failures(added, removed, resized, renamed, text_delta, 0, False)) != 1:
|
|
problems.append("--fail-on-added-bytes 0 did not fire on a +100 .text delta")
|
|
if gate_failures(added, removed, resized, renamed, text_delta, 100, False):
|
|
problems.append("--fail-on-added-bytes 100 fired on a +100 .text delta")
|
|
if len(gate_failures([], [], [], [], text_delta, 0, True)) != 1:
|
|
problems.append("an unchanged symbol set still tripped --fail-on-symbol-set-change")
|
|
# The three shapes that used to walk through: a SHRUNK .text under a zero budget, a resize with
|
|
# no net delta, and a rename with no net delta. G1 forbids all three by name.
|
|
if not gate_failures([], [], [], [], -4096, 0, False):
|
|
problems.append("--fail-on-added-bytes 0 passed a .text that SHRANK by 4096 bytes")
|
|
if not gate_failures([], [], resized, [], 0, None, True):
|
|
problems.append("--fail-on-symbol-set-change passed a resized symbol at zero net delta")
|
|
if not gate_failures([], [], [], renamed, 0, None, True):
|
|
problems.append("--fail-on-symbol-set-change passed a renamed symbol at zero net delta")
|
|
if not gate_failures([], [], [], [], -4096, None, False, True):
|
|
problems.append("--fail-on-text-delta passed a .text that SHRANK by 4096 bytes")
|
|
if gate_failures([], [], [], [], 0, None, False, True):
|
|
problems.append("--fail-on-text-delta fired on a zero .text delta")
|
|
for problem in problems:
|
|
say("self-test: " + problem)
|
|
say("self-test: " + ("OK (2 canned transcripts, 5 buckets, 3 gates)" if not problems else "FAILED"))
|
|
return 0 if not problems else 1
|
|
|
|
|
|
def main():
|
|
parser = argparse.ArgumentParser(description=__doc__,
|
|
formatter_class=argparse.RawDescriptionHelpFormatter)
|
|
parser.add_argument("--before", help="the baseline libMobileGL.so")
|
|
parser.add_argument("--after", help="the libMobileGL.so under test")
|
|
parser.add_argument("--nm", default="nm")
|
|
parser.add_argument("--size", default="size")
|
|
parser.add_argument("--cxxfilt", default="c++filt")
|
|
parser.add_argument("--markdown", default=None, help="write the Markdown report here")
|
|
parser.add_argument("--json", default=None, help="write the machine-readable result here")
|
|
parser.add_argument("--strip-scope", action="append", default=[], metavar="PREFIX",
|
|
help="de-nest this scope in demangled names before comparing: PREFIX "
|
|
"'A::B::C::' rewrites every 'A::B::C::X' to 'A::B::X' (repeatable). "
|
|
"This is what folds a de-nesting into a rename instead of an "
|
|
"added+removed pair, including inside template arguments.")
|
|
parser.add_argument("--rename-map", action="append", default=[], metavar="OLD=NEW",
|
|
help="textual OLD=NEW substitution on demangled names (repeatable)")
|
|
parser.add_argument("--only-names", default=None,
|
|
help="comma-separated: list only symbols whose demangled text contains one")
|
|
parser.add_argument("--threshold", type=int, default=0,
|
|
help="ignore size deltas of at most this many bytes")
|
|
parser.add_argument("--fail-on-added-bytes", type=int, default=None,
|
|
help="exit non-zero when .text grew by more than this many bytes; 0 is "
|
|
"special and means the section must be BYTE-IDENTICAL, so a shrink "
|
|
"fails it too (that is what P1's G1 asks for)")
|
|
parser.add_argument("--fail-on-text-delta", action="store_true",
|
|
help="exit non-zero when .text moved at all, in either direction. The "
|
|
"explicit spelling of what --fail-on-added-bytes 0 also does.")
|
|
parser.add_argument("--fail-on-symbol-set-change", action="store_true",
|
|
help="exit non-zero when any defined symbol was added, removed, resized or "
|
|
"renamed (the four buckets of the report; --strip-scope decides which "
|
|
"of added+removed vs renamed a de-nesting lands in, it does not "
|
|
"excuse it). Compared at threshold 0 whatever --threshold says.")
|
|
parser.add_argument("--self-test", action="store_true")
|
|
args = parser.parse_args()
|
|
|
|
if args.self_test:
|
|
return self_test()
|
|
|
|
if not args.before or not args.after:
|
|
parser.error("--before and --after are required (or use --self-test)")
|
|
|
|
if args.fail_on_added_bytes is not None and args.fail_on_added_bytes < 0:
|
|
parser.error("--fail-on-added-bytes takes a byte budget of 0 or more")
|
|
|
|
rename_map = []
|
|
for entry in args.rename_map:
|
|
if "=" not in entry:
|
|
parser.error("--rename-map expects OLD=NEW, got " + entry)
|
|
old, new = entry.split("=", 1)
|
|
rename_map.append((old, new))
|
|
only_names = [n.strip() for n in args.only_names.split(",")] if args.only_names else []
|
|
|
|
before, before_sections, before_count = build_side(
|
|
args.before, args.nm, args.size, args.cxxfilt, args.strip_scope, rename_map)
|
|
after, after_sections, after_count = build_side(
|
|
args.after, args.nm, args.size, args.cxxfilt, args.strip_scope, rename_map)
|
|
|
|
removed, added, resized, renamed, unchanged = bucket(before, after, only_names, args.threshold)
|
|
# --threshold is a REPORT control - "do not list resizes smaller than this" - and a gate that
|
|
# read the thresholded buckets would quietly weaken itself the day someone raised it. The gates
|
|
# always see the threshold-0 buckets.
|
|
if args.threshold:
|
|
gate_removed, gate_added, gate_resized, gate_renamed, _ = bucket(before, after, only_names, 0)
|
|
else:
|
|
gate_removed, gate_added, gate_resized, gate_renamed = removed, added, resized, renamed
|
|
|
|
before_text = before_sections.get(".text", 0)
|
|
after_text = after_sections.get(".text", 0)
|
|
delta = after_text - before_text
|
|
percent = (100.0 * delta / before_text) if before_text else 0.0
|
|
|
|
say("before: {} ({} bytes on disk)".format(args.before, os.path.getsize(args.before)))
|
|
say("after : {} ({} bytes on disk)".format(args.after, os.path.getsize(args.after)))
|
|
if args.strip_scope:
|
|
say("strip-scope: " + " ; ".join(args.strip_scope))
|
|
if rename_map:
|
|
say("rename-map: " + " ; ".join("{}={}".format(o, n) for o, n in rename_map))
|
|
say(".text {} -> {} ({:+d}, {:+.3f}%)".format(before_text, after_text, delta, percent))
|
|
for section in INTERESTING_SECTIONS:
|
|
if section == ".text":
|
|
continue
|
|
b = before_sections.get(section)
|
|
a = after_sections.get(section)
|
|
if b is None and a is None:
|
|
continue
|
|
say("{} {} -> {} ({:+d})".format(section, b or 0, a or 0, (a or 0) - (b or 0)))
|
|
say("{} -> {} defined symbols: {} added, {} removed, {} resized, {} renamed".format(
|
|
before_count, after_count, len(added), len(removed), len(resized), len(renamed)))
|
|
# The two counts differ by the folding: several mangled symbols can share one
|
|
# normalised demangled name (local aliases, `.cold` parts, identical-COMDAT clones).
|
|
say("{} -> {} normalised names, {} unchanged (name, size and mangling all identical)".format(
|
|
len(before), len(after), unchanged))
|
|
if only_names:
|
|
say("listing restricted to names containing: " + ", ".join(only_names))
|
|
gates = gate_failures(gate_added, gate_removed, gate_resized, gate_renamed, delta,
|
|
args.fail_on_added_bytes, args.fail_on_symbol_set_change,
|
|
args.fail_on_text_delta)
|
|
if (args.fail_on_added_bytes is None and not args.fail_on_symbol_set_change
|
|
and not args.fail_on_text_delta):
|
|
say("no gate flag: informational run")
|
|
elif args.threshold:
|
|
say("gates compare at threshold 0 ({} added, {} removed, {} resized, {} renamed there); "
|
|
"--threshold {} only shortens the report".format(
|
|
len(gate_added), len(gate_removed), len(gate_resized), len(gate_renamed),
|
|
args.threshold))
|
|
|
|
lines = ["# MobileGL symbol report", "",
|
|
"| side | path | file bytes | .text |",
|
|
"|---|---|---|---|",
|
|
"| before | `{}` | {} | {} |".format(args.before, os.path.getsize(args.before), before_text),
|
|
"| after | `{}` | {} | {} |".format(args.after, os.path.getsize(args.after), after_text),
|
|
"",
|
|
"`.text` {} -> {} ({:+d}, {:+.3f}%). {} -> {} defined symbols: "
|
|
"{} added, {} removed, {} resized, {} renamed, {} unchanged.".format(
|
|
before_text, after_text, delta, percent, before_count, after_count,
|
|
len(added), len(removed), len(resized), len(renamed), unchanged)]
|
|
lines += markdown_table("Removed", [(r["name"], r["before"]) for r in removed],
|
|
["symbol", "bytes"])
|
|
lines += markdown_table("Added", [(r["name"], r["after"]) for r in added],
|
|
["symbol", "bytes"])
|
|
lines += markdown_table("Resized", [(r["name"], r["before"], r["after"], "{:+d}".format(r["delta"]))
|
|
for r in resized],
|
|
["symbol", "before", "after", "delta"])
|
|
lines += markdown_table("Renamed only (same size)",
|
|
[(r["name"], r["before"], r["after"]) for r in renamed],
|
|
["normalised symbol", "before mangling", "after mangling"])
|
|
report = "\n".join(lines) + "\n"
|
|
|
|
if args.markdown:
|
|
with open(args.markdown, "w", encoding="utf-8", newline="\n") as handle:
|
|
handle.write(report)
|
|
say("markdown written to " + args.markdown)
|
|
else:
|
|
print(report)
|
|
|
|
if args.json:
|
|
with open(args.json, "w", encoding="utf-8", newline="\n") as handle:
|
|
json.dump({"before": args.before, "after": args.after,
|
|
"sections_before": before_sections, "sections_after": after_sections,
|
|
"removed": removed, "added": added, "resized": resized,
|
|
"renamed": renamed, "unchanged": unchanged}, handle, indent=2)
|
|
handle.write("\n")
|
|
say("json written to " + args.json)
|
|
|
|
# After the report is written, never before: a gate that fired is exactly when someone needs
|
|
# the Markdown and the JSON.
|
|
for reason in gates:
|
|
say("FAIL " + reason)
|
|
return 1 if gates else 0
|
|
|
|
|
|
if __name__ == "__main__":
|
|
sys.exit(main())
|