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| 1 #!/usr/bin/env python |
| 2 # Copyright (c) 2015 The Chromium Authors. All rights reserved. |
| 3 # Use of this source code is governed by a BSD-style license that can be |
| 4 # found in the LICENSE file. |
| 5 |
| 6 |
| 7 """Run the given command through LLVM's coverage tools.""" |
| 8 |
| 9 |
| 10 import argparse |
| 11 import os |
| 12 import subprocess |
| 13 |
| 14 |
| 15 BUILDTYPE = 'Coverage' |
| 16 PROFILE_DATA = 'default.profraw' |
| 17 PROFILE_DATA_MERGED = 'prof_merged' |
| 18 SKIA_OUT = 'SKIA_OUT' |
| 19 |
| 20 |
| 21 def _get_out_dir(): |
| 22 """Determine the location for compiled binaries.""" |
| 23 return os.path.join(os.environ.get(SKIA_OUT, os.path.realpath('out')), |
| 24 BUILDTYPE) |
| 25 |
| 26 |
| 27 def run_coverage(cmd): |
| 28 """Run the given command and return per-file coverage data. |
| 29 |
| 30 Assumes that the binary has been built using llvm_coverage_build and that |
| 31 LLVM 3.6 or newer is installed. |
| 32 """ |
| 33 binary_path = os.path.join(_get_out_dir(), cmd[0]) |
| 34 subprocess.call([binary_path] + cmd[1:]) |
| 35 try: |
| 36 subprocess.check_call( |
| 37 ['llvm-profdata', 'merge', PROFILE_DATA, |
| 38 '-output=%s' % PROFILE_DATA_MERGED]) |
| 39 finally: |
| 40 os.remove(PROFILE_DATA) |
| 41 try: |
| 42 return subprocess.check_output(['llvm-cov', 'show', '-no-colors', |
| 43 '-instr-profile', PROFILE_DATA_MERGED, |
| 44 binary_path]) |
| 45 finally: |
| 46 os.remove(PROFILE_DATA_MERGED) |
| 47 |
| 48 |
| 49 def main(): |
| 50 """Run coverage and generate a report.""" |
| 51 # Parse args. |
| 52 parser = argparse.ArgumentParser() |
| 53 parser.add_argument('--outResultsFile') |
| 54 args, cmd = parser.parse_known_args() |
| 55 |
| 56 # Run coverage. |
| 57 report = run_coverage(cmd) |
| 58 with open(args.outResultsFile, 'w') as f: |
| 59 f.write(report) |
| 60 |
| 61 |
| 62 if __name__ == '__main__': |
| 63 main() |
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