Quelle fix_stacks.py Sprache: Python

#!/usr/bin/env python3
# vim:sw=4:ts=4:et:
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

# This script uses `fix-stacks` to post-process the entries produced by
# MozFormatCodeAddress().

import atexit
import os
import platform
import re
import sys
from subprocess import PIPE, Popen

# Matches lines produced by MozFormatCodeAddress(), e.g.
# `#01: ???[tests/example +0x43a0]`.
line_re = re.compile(r"#\d+: .+\[.+ \+0x[0-9A-Fa-f]+\]")

fix_stacks = None

def autobootstrap():
    import buildconfig
    from mozbuild.configure import ConfigureSandbox

    sandbox = ConfigureSandbox(
        {},
        argv=[
            "configure",
            "--help",
            "--host={}".format(buildconfig.substs["HOST_ALIAS"]),
        ],
    )
    moz_configure = os.path.join(buildconfig.topsrcdir, "build", "moz.configure")
    sandbox.include_file(os.path.join(moz_configure, "init.configure"))
    sandbox.include_file(os.path.join(moz_configure, "bootstrap.configure"))
    # Expand the `bootstrap_path` template for "fix-stacks", and execute the
    # expanded function via `_value_for`, which will trigger autobootstrap.
    sandbox._value_for(sandbox["bootstrap_path"]("fix-stacks"))

def initFixStacks(jsonMode, slowWarning, breakpadSymsDir, hide_errors):
    # Look in MOZ_FETCHES_DIR (for automation), then in MOZBUILD_STATE_PATH
    # (for a local build where the user has that set), then in ~/.mozbuild
    # (for a local build with default settings).
    base = os.environ.get(
        "MOZ_FETCHES_DIR",
        os.environ.get("MOZBUILD_STATE_PATH", os.path.expanduser("~/.mozbuild")),
    )
    fix_stacks_exe = base + "/fix-stacks/fix-stacks"
    if platform.system() == "Windows":
        fix_stacks_exe = fix_stacks_exe + ".exe"

    if not (os.path.isfile(fix_stacks_exe) and os.access(fix_stacks_exe, os.X_OK)):
        try:
            autobootstrap()
        except ImportError:
            # We're out-of-tree (e.g. tests tasks on CI) and can't autobootstrap
            # (we shouldn't anyways).
            pass

    if not (os.path.isfile(fix_stacks_exe) and os.access(fix_stacks_exe, os.X_OK)):
        raise Exception("cannot find `fix-stacks`; please run `./mach bootstrap`")

    args = [fix_stacks_exe]
    if jsonMode:
        args.append("-j")
    if breakpadSymsDir:
        args.append("-b")
        args.append(breakpadSymsDir)

    # Sometimes we need to prevent errors from going to stderr.
    stderr = open(os.devnull) if hide_errors else None

    global fix_stacks
    fix_stacks = Popen(
        args, stdin=PIPE, stdout=PIPE, stderr=stderr, universal_newlines=True
    )

    # Shut down the fix_stacks process on exit. We use `terminate()`
    # because it is more forceful than `wait()`, and the Python docs warn
    # about possible deadlocks with `wait()`.
    def cleanup(fix_stacks):
        for fn in [fix_stacks.stdin.close, fix_stacks.terminate]:
            try:
                fn()
            except OSError:
                pass

    atexit.register(cleanup, fix_stacks)

    if slowWarning:
        print(
            "Initializing stack-fixing for the first stack frame, this may take a while..."
        )

def fixSymbols(
    line, jsonMode=False, slowWarning=False, breakpadSymsDir=None, hide_errors=False
):
    is_bytes = isinstance(line, bytes)
    line_str = line.decode("utf-8") if is_bytes else line
    if line_re.search(line_str) is None:
        return line

    if not fix_stacks:
        initFixStacks(jsonMode, slowWarning, breakpadSymsDir, hide_errors)

    # Sometimes `line` is lacking a trailing newline. If we pass such a `line`
    # to `fix-stacks` it will wait until it receives a newline, causing this
    # script to hang. So we add a newline if one is missing and then remove it
    # from the output.
    is_missing_newline = not line_str.endswith("\n")
    if is_missing_newline:
        line_str = line_str + "\n"
    fix_stacks.stdin.write(line_str)
    fix_stacks.stdin.flush()
    out = fix_stacks.stdout.readline()
    if is_missing_newline:
        out = out[:-1]

    if is_bytes and not isinstance(out, bytes):
        out = out.encode("utf-8")
    return out

if __name__ == "__main__":
    bpsyms = os.environ.get("BREAKPAD_SYMBOLS_PATH", None)
    for line in sys.stdin:
        sys.stdout.write(fixSymbols(line, breakpadSymsDir=bpsyms))

quality94%

¤ Dauer der Verarbeitung: 0.13 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.