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# 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
import json
import os
import shutil
import tempfile
from mozlog import get_proxy_logger
from .symbolication import ProfileSymbolicator
LOG = get_proxy_logger("profiler")
def save_gecko_profile(profile, filename):
with open(filename, "w") as f:
json.dump(profile, f)
def symbolicate_profile_json(profile_path, objdir_path):
Symbolicate a single JSON profile.
temp_dir = tempfile.mkdtemp()
missing_symbols_zip = os.path.join(temp_dir, "")
firefox_symbol_path = os.path.join(objdir_path, "dist", "crashreporter-symbols")
if not os.path.isdir(firefox_symbol_path):
windows_symbol_path = os.path.join(temp_dir, "windows")
symbol_paths = {"FIREFOX": firefox_symbol_path, "WINDOWS": windows_symbol_path}
symbolicator = ProfileSymbolicator(
# Trace-level logging (verbose)
"enableTracing": 0,
# Fallback server if symbol is not found locally
# Maximum number of symbol files to keep in memory
"maxCacheEntries": 2000000,
# Frequency of checking for recent symbols to
# cache (in hours)
"prefetchInterval": 12,
# Oldest file age to prefetch (in hours)
"prefetchThreshold": 48,
# Maximum number of library versions to pre-fetch
# per library
"prefetchMaxSymbolsPerLib": 3,
# Default symbol lookup directories
"defaultApp": "FIREFOX",
"defaultOs": "WINDOWS",
# Paths to .SYM files, expressed internally as a
# mapping of app or platform names to directories
# Note: App & OS names from requests are converted
# to all-uppercase internally
"symbolPaths": symbol_paths,
"Symbolicating the performance profile... This could take a couple "
"of minutes."
with open(profile_path, "r", encoding="utf-8") as profile_file:
profile = json.load(profile_file)
symbolicator.dump_and_integrate_missing_symbols(profile, missing_symbols_zip)
# Overwrite the profile in place.
save_gecko_profile(profile, profile_path)
except MemoryError:
"Ran out of memory while trying"
" to symbolicate profile {0}".format(profile_path)
except Exception as e:
LOG.error("Encountered an exception during profile symbolication")