The Meson Build System
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72 lines
2.6 KiB
72 lines
2.6 KiB
# SPDX-License-Identifier: Apache-2.0 |
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# Copyright 2018 The Meson development team |
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from __future__ import annotations |
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import itertools |
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import fnmatch |
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import concurrent.futures |
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from pathlib import Path |
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from ..compilers import lang_suffixes |
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from ..mesonlib import quiet_git |
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import typing as T |
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if T.TYPE_CHECKING: |
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import subprocess |
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def parse_pattern_file(fname: Path) -> T.List[str]: |
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patterns = [] |
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try: |
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with fname.open(encoding='utf-8') as f: |
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for line in f: |
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pattern = line.strip() |
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if pattern and not pattern.startswith('#'): |
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patterns.append(pattern) |
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except FileNotFoundError: |
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pass |
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return patterns |
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def run_tool(name: str, srcdir: Path, builddir: Path, fn: T.Callable[..., subprocess.CompletedProcess], *args: T.Any) -> int: |
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patterns = parse_pattern_file(srcdir / f'.{name}-include') |
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globs: T.Union[T.List[T.List[Path]], T.List[T.Generator[Path, None, None]]] |
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if patterns: |
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globs = [srcdir.glob(p) for p in patterns] |
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else: |
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r, o = quiet_git(['ls-files'], srcdir) |
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if r: |
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globs = [[Path(srcdir, f) for f in o.splitlines()]] |
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else: |
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globs = [srcdir.glob('**/*')] |
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patterns = parse_pattern_file(srcdir / f'.{name}-ignore') |
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ignore = [str(builddir / '*')] |
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ignore.extend([str(srcdir / p) for p in patterns]) |
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suffixes = set(lang_suffixes['c']).union(set(lang_suffixes['cpp'])) |
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suffixes.add('h') |
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suffixes = {f'.{s}' for s in suffixes} |
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futures = [] |
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returncode = 0 |
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e = concurrent.futures.ThreadPoolExecutor() |
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try: |
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for f in itertools.chain(*globs): |
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strf = str(f) |
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if f.is_dir() or f.suffix not in suffixes or \ |
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any(fnmatch.fnmatch(strf, i) for i in ignore): |
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continue |
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futures.append(e.submit(fn, f, *args)) |
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concurrent.futures.wait( |
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futures, |
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return_when=concurrent.futures.FIRST_EXCEPTION |
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) |
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finally: |
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# We try to prevent new subprocesses from being started by canceling |
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# the futures, but this is not water-tight: some may have started |
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# between the wait being interrupted or exited and the futures being |
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# canceled. (A fundamental fix would probably require the ability to |
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# terminate such subprocesses upon cancellation of the future.) |
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for x in futures: # Python >=3.9: e.shutdown(cancel_futures=True) |
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x.cancel() |
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e.shutdown() |
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if futures: |
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returncode = max(x.result().returncode for x in futures) |
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return returncode
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