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d4a4f3694c
Detect that the environment variable MAKEFLAGS specifies a jobserver pool to use, and automatically use it to control build parallelism when this is the case. NOTE: On Posix, the pipe-based protocol is not supported and will be detected. Ninja will print a warning on startup then ignore the content of MAKEFLAGS (there is a regression test for this). This is disabled is `--dry-run` or an explicit `-j<COUNT>` is passed on the command-line. Note that the `-l` option used to limit dispatch based on the overall load factor will still be in effect if used. + Use default member initialization for BuildConfig struct. + Add a new regression test suite that uses the misc/jobserver_pool.py script that was introduced in a previous commit, to verify that everything works properly.
43 lines
1.3 KiB
Python
Executable File
43 lines
1.3 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright 2024 Google Inc. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Simple utility used by the jobserver test. Wait for specific time, then write start/stop times to output file."""
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import argparse
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import time
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import sys
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from pathlib import Path
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def main():
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument(
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"--duration-ms",
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default="50",
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help="sleep duration in milliseconds (default 50)",
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)
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parser.add_argument("output_file", type=Path, help="output file name.")
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args = parser.parse_args()
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now_time_ns = time.time_ns()
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time.sleep(int(args.duration_ms) / 1000.0)
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args.output_file.write_text(f"{now_time_ns}\n{time.time_ns()}\n")
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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