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#!/usr/bin/env python
from __future__ import print_function
'''Prepare a code coverage artifact.
- Collate raw profiles into one indexed profile.
- Generate html reports for the given binaries.
Caution: The positional arguments to this script must be specified before any
optional arguments, such as --restrict.
'''
import argparse
import glob
import os
import subprocess
import sys
def merge_raw_profiles(host_llvm_profdata, profile_data_dir, preserve_profiles):
print(':: Merging raw profiles...', end='')
sys.stdout.flush()
raw_profiles = glob.glob(os.path.join(profile_data_dir, '*.profraw'))
manifest_path = os.path.join(profile_data_dir, 'profiles.manifest')
profdata_path = os.path.join(profile_data_dir, 'Coverage.profdata')
with open(manifest_path, 'w') as manifest:
manifest.write('\n'.join(raw_profiles))
subprocess.check_call([host_llvm_profdata, 'merge', '-sparse', '-f',
manifest_path, '-o', profdata_path])
if not preserve_profiles:
for raw_profile in raw_profiles:
os.remove(raw_profile)
os.remove(manifest_path)
print('Done!')
return profdata_path
def prepare_html_report(host_llvm_cov, profile, report_dir, binaries,
restricted_dirs):
print(':: Preparing html report for {0}...'.format(binaries), end='')
sys.stdout.flush()
objects = []
for i, binary in enumerate(binaries):
if i == 0:
objects.append(binary)
else:
objects.extend(('-object', binary))
invocation = [host_llvm_cov, 'show'] + objects + ['-format', 'html',
'-instr-profile', profile, '-o', report_dir,
'-show-line-counts-or-regions', '-Xdemangler', 'c++filt',
'-Xdemangler', '-n'] + restricted_dirs
subprocess.check_call(invocation)
with open(os.path.join(report_dir, 'summary.txt'), 'wb') as Summary:
subprocess.check_call([host_llvm_cov, 'report'] + objects +
['-instr-profile', profile], stdout=Summary)
print('Done!')
def prepare_html_reports(host_llvm_cov, profdata_path, report_dir, binaries,
unified_report, restricted_dirs):
if unified_report:
prepare_html_report(host_llvm_cov, profdata_path, report_dir, binaries,
restricted_dirs)
else:
for binary in binaries:
binary_report_dir = os.path.join(report_dir,
os.path.basename(binary))
prepare_html_report(host_llvm_cov, profdata_path, binary_report_dir,
[binary], restricted_dirs)
if __name__ == '__main__':
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('host_llvm_profdata', help='Path to llvm-profdata')
parser.add_argument('host_llvm_cov', help='Path to llvm-cov')
parser.add_argument('profile_data_dir',
help='Path to the directory containing the raw profiles')
parser.add_argument('report_dir',
help='Path to the output directory for html reports')
parser.add_argument('binaries', metavar='B', type=str, nargs='*',
help='Path to an instrumented binary')
parser.add_argument('--only-merge', action='store_true',
help='Only merge raw profiles together, skip report '
'generation')
parser.add_argument('--preserve-profiles',
help='Do not delete raw profiles', action='store_true')
parser.add_argument('--use-existing-profdata',
help='Specify an existing indexed profile to use')
parser.add_argument('--unified-report', action='store_true',
help='Emit a unified report for all binaries')
parser.add_argument('--restrict', metavar='R', type=str, nargs='*',
default=[],
help='Restrict the reporting to the given source paths'
' (must be specified after all other positional arguments)')
args = parser.parse_args()
if args.use_existing_profdata and args.only_merge:
print('--use-existing-profdata and --only-merge are incompatible')
exit(1)
if args.use_existing_profdata:
profdata_path = args.use_existing_profdata
else:
profdata_path = merge_raw_profiles(args.host_llvm_profdata,
args.profile_data_dir,
args.preserve_profiles)
if not len(args.binaries):
print('No binaries specified, no work to do!')
exit(1)
if not args.only_merge:
prepare_html_reports(args.host_llvm_cov, profdata_path, args.report_dir,
args.binaries, args.unified_report, args.restrict)
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