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Diffstat (limited to 'deprecated/cwp/interpreter/symbolizer.py')
-rw-r--r-- | deprecated/cwp/interpreter/symbolizer.py | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/deprecated/cwp/interpreter/symbolizer.py b/deprecated/cwp/interpreter/symbolizer.py new file mode 100644 index 00000000..4ece480d --- /dev/null +++ b/deprecated/cwp/interpreter/symbolizer.py @@ -0,0 +1,129 @@ +# Copyright 2012 Google Inc. All Rights Reserved. +"""A script that symbolizes perf.data files.""" +import optparse +import os +import shutil +from subprocess import call +from subprocess import PIPE +from subprocess import Popen +from cros_utils import misc + +GSUTIL_CMD = 'gsutil cp gs://chromeos-image-archive/%s-release/%s/debug.tgz %s' +TAR_CMD = 'tar -zxvf %s -C %s' +PERF_BINARY = '/google/data/ro/projects/perf/perf' +VMLINUX_FLAG = ' --vmlinux=/usr/lib/debug/boot/vmlinux' +PERF_CMD = PERF_BINARY + ' report -i %s -n --symfs=%s' + VMLINUX_FLAG + + +def main(): + parser = optparse.OptionParser() + parser.add_option('--in', dest='in_dir') + parser.add_option('--out', dest='out_dir') + parser.add_option('--cache', dest='cache') + (opts, _) = parser.parse_args() + if not _ValidateOpts(opts): + return 1 + else: + for filename in os.listdir(opts.in_dir): + try: + _DownloadSymbols(filename, opts.cache) + _PerfReport(filename, opts.in_dir, opts.out_dir, opts.cache) + except: + print 'Exception caught. Continuing...' + return 0 + + +def _ValidateOpts(opts): + """Ensures all directories exist, before attempting to populate.""" + if not os.path.exists(opts.in_dir): + print "Input directory doesn't exist." + return False + if not os.path.exists(opts.out_dir): + print "Output directory doesn't exist. Creating it..." + os.makedirs(opts.out_dir) + if not os.path.exists(opts.cache): + print "Cache directory doesn't exist." + return False + return True + + +def _ParseFilename(filename, canonical=False): + """Returns a tuple (key, time, board, lsb_version). + If canonical is True, instead returns (database_key, board, canonical_vers) + canonical_vers includes the revision string. + """ + key, time, board, vers = filename.split('~') + if canonical: + vers = misc.GetChromeOSVersionFromLSBVersion(vers) + return (key, time, board, vers) + + +def _FormReleaseDir(board, version): + return '%s-release~%s' % (board, version) + + +def _DownloadSymbols(filename, cache): + """ Incrementally downloads appropriate symbols. + We store the downloads in cache, with each set of symbols in a TLD + named like cache/$board-release~$canonical_vers/usr/lib/debug + """ + _, _, board, vers = _ParseFilename(filename, canonical=True) + tmp_suffix = '.tmp' + + tarball_subdir = _FormReleaseDir(board, vers) + tarball_dir = os.path.join(cache, tarball_subdir) + tarball_path = os.path.join(tarball_dir, 'debug.tgz') + + symbol_subdir = os.path.join('usr', 'lib') + symbol_dir = os.path.join(tarball_dir, symbol_subdir) + + if os.path.isdir(symbol_dir): + print 'Symbol directory %s exists, skipping download.' % symbol_dir + return + else: + # First download using gsutil. + if not os.path.isfile(tarball_path): + download_cmd = GSUTIL_CMD % (board, vers, tarball_path + tmp_suffix) + print 'Downloading symbols for %s' % filename + print download_cmd + ret = call(download_cmd.split()) + if ret != 0: + print 'gsutil returned non-zero error code: %s.' % ret + # Clean up the empty directory structures. + os.remove(tarball_path + tmp_suffix) + raise IOError + + shutil.move(tarball_path + tmp_suffix, tarball_path) + + # Next, untar the tarball. + os.makedirs(symbol_dir + tmp_suffix) + extract_cmd = TAR_CMD % (tarball_path, symbol_dir + tmp_suffix) + print 'Extracting symbols for %s' % filename + print extract_cmd + ret = call(extract_cmd.split()) + if ret != 0: + print 'tar returned non-zero code: %s.' % ret + raise IOError + shutil.move(symbol_dir + tmp_suffix, symbol_dir) + os.remove(tarball_path) + + +def _PerfReport(filename, in_dir, out_dir, cache): + """ Call perf report on the file, storing output to the output dir. + The output is currently stored as $out_dir/$filename + """ + _, _, board, vers = _ParseFilename(filename, canonical=True) + symbol_cache_tld = _FormReleaseDir(board, vers) + input_file = os.path.join(in_dir, filename) + symfs = os.path.join(cache, symbol_cache_tld) + report_cmd = PERF_CMD % (input_file, symfs) + print 'Reporting.' + print report_cmd + report_proc = Popen(report_cmd.split(), stdout=PIPE) + outfile = open(os.path.join(out_dir, filename), 'w') + outfile.write(report_proc.stdout.read()) + outfile.close() + + +if __name__ == '__main__': + exit(main()) |