.ycm_extra_conf.py
author Ted Mielczarek <ted@mielczarek.org>
Wed, 12 Apr 2017 15:06:22 -0400
changeset 403929 b5552791f6c8da640cfcb248ba4681d4d31594a5
parent 352341 578ebd592745ff2b7647b205576f20b5b36f3327
child 515141 2a22490b8a06c9a5eef192ef3192386f8e7ff74f
permissions -rw-r--r--
bug 1355961 - add some sccache stats to build_metrics. r=gps This commit makes sccache dump JSON stats at the end of the build, and then reads them in `BuildScript.generate_build_stats` and adds them to the build_metrics we submit to Perfherder. The stats dumping is done in Makefile.in where we currently dump verbose sccache stats because sccache doesn't persist stats to disk right now and it will also shut down its server process after 5 minutes, so when the post-build automation steps take more than 5 minutes the server shuts down and the stats are lost. Currently it's collecting: * Cache hit rate * Cache write errors * Non-cacheable requests (compiler invocations that sccache can't cache) We can always grow this list later. MozReview-Commit-ID: J9CwU7XB05I

# 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/.

import imp
import os
import shlex
import sys
try:
    from StringIO import StringIO
except ImportError:
    from io import StringIO

old_bytecode = sys.dont_write_bytecode
sys.dont_write_bytecode = True

path = os.path.join(os.path.dirname(__file__), 'mach')

if not os.path.exists(path):
    path = os.path.join(os.path.dirname(__file__), 'config.status')
    config = imp.load_module('_buildconfig', open(path), path, ('', 'r', imp.PY_SOURCE))
    path = os.path.join(config.topsrcdir, 'mach')
mach_module = imp.load_module('_mach', open(path), path, ('', 'r', imp.PY_SOURCE))

sys.dont_write_bytecode = old_bytecode

def FlagsForFile(filename):
    mach = mach_module.get_mach()
    out = StringIO()

    # Mach calls sys.stdout.fileno(), so we need to fake it when capturing it.
    # Returning an invalid file descriptor does the trick.
    out.fileno = lambda: -1
    out.encoding = None
    mach.run(['compileflags', filename], stdout=out, stderr=out)

    flag_list = shlex.split(out.getvalue())

    # This flag is added by Fennec for android build and causes ycmd to fail to parse the file.
    # Removing this flag is a workaround until ycmd starts to handle this flag properly.
    # https://github.com/Valloric/YouCompleteMe/issues/1490
    final_flags = [x for x in flag_list if not x.startswith('-march=armv')]

    return {
        'flags': final_flags,
        'do_cache': True
    }