3dbdfbc06f
Silently recover if REDO_CHEATFDS file descriptors are closed, because they aren't completely essential and MAKEFLAGS-related warnings already get printed if all file descriptors have been closed. If MAKEFLAGS --jobserver-auth flags are closed, improve the error message so that a) it's a normal error instead of an exception and b) we link to documentation about why it happens. Also write some more detailed documentation about what's going on here.
131 lines
4.8 KiB
Python
131 lines
4.8 KiB
Python
"""redo: build the listed targets whether they need it or not."""
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#
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# Copyright 2010-2018 Avery Pennarun and contributors
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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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#
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import sys, os, traceback
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from . import builder, env, helpers, jobserver, logs, options, state
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from .atoi import atoi
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from .logs import warn, err
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optspec = """
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redo [targets...]
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--
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j,jobs= maximum number of jobs to build at once
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d,debug print dependency checks as they happen
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v,verbose print commands as they are read from .do files (variables intact)
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x,xtrace print commands as they are executed (variables expanded)
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k,keep-going keep going as long as possible even if some targets fail
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shuffle randomize the build order to find dependency bugs
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version print the current version and exit
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redo-log options:
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no-log don't capture error output, just let it flow straight to stderr
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no-details only show 'redo' recursion trace (to see more later, use redo-log)
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no-status don't display build summary line at the bottom of the screen
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no-pretty don't pretty-print logs, show raw @@REDO output instead
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no-color disable ANSI color; --color to force enable (default: auto)
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debug-locks print messages about file locking (useful for debugging)
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debug-pids print process ids as part of log messages (useful for debugging)
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"""
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def main():
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o = options.Options(optspec)
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(opt, flags, extra) = o.parse(sys.argv[1:])
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targets = extra
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if opt.version:
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from . import version
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print version.TAG
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sys.exit(0)
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if opt.debug:
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os.environ['REDO_DEBUG'] = str(opt.debug or 0)
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if opt.verbose:
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os.environ['REDO_VERBOSE'] = '1'
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if opt.xtrace:
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os.environ['REDO_XTRACE'] = '1'
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if opt.keep_going:
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os.environ['REDO_KEEP_GOING'] = '1'
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if opt.shuffle:
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os.environ['REDO_SHUFFLE'] = '1'
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if opt.debug_locks:
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os.environ['REDO_DEBUG_LOCKS'] = '1'
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if opt.debug_pids:
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os.environ['REDO_DEBUG_PIDS'] = '1'
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# These might get overridden in subprocesses in builder.py
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def _set_defint(name, val):
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os.environ[name] = os.environ.get(name, str(int(val)))
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_set_defint('REDO_LOG', opt.log)
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_set_defint('REDO_PRETTY', opt.pretty)
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_set_defint('REDO_COLOR', opt.color)
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try:
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state.init(targets)
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if env.is_toplevel and not targets:
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targets = ['all']
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j = atoi(opt.jobs)
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if env.is_toplevel and (env.v.LOG or j > 1):
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builder.close_stdin()
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if env.is_toplevel and env.v.LOG:
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builder.start_stdin_log_reader(
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status=opt.status, details=opt.details,
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pretty=env.v.PRETTY, color=env.v.COLOR,
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debug_locks=opt.debug_locks, debug_pids=opt.debug_pids)
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else:
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logs.setup(
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tty=sys.stderr, parent_logs=env.v.LOG,
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pretty=env.v.PRETTY, color=env.v.COLOR)
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if (env.is_toplevel or j > 1) and env.v.LOCKS_BROKEN:
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warn('detected broken fcntl locks; parallelism disabled.\n')
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warn(' ...details: https://github.com/Microsoft/WSL/issues/1927\n')
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if j > 1:
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j = 1
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for t in targets:
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if os.path.exists(t):
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f = state.File(name=t)
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if not f.is_generated:
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warn(('%s: exists and not marked as generated; ' +
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'not redoing.\n') % f.nicename())
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state.rollback()
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if j < 0 or j > 1000:
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err('invalid --jobs value: %r\n' % opt.jobs)
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jobserver.setup(j)
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try:
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assert state.is_flushed()
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retcode = builder.run(targets, lambda t: (True, True))
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assert state.is_flushed()
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finally:
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try:
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state.rollback()
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finally:
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try:
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jobserver.force_return_tokens()
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except Exception, e: # pylint: disable=broad-except
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traceback.print_exc(100, sys.stderr)
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err('unexpected error: %r\n' % e)
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retcode = 1
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if env.is_toplevel:
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builder.await_log_reader()
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sys.exit(retcode)
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except (KeyboardInterrupt, helpers.ImmediateReturn):
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if env.is_toplevel:
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builder.await_log_reader()
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sys.exit(200)
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if __name__ == '__main__':
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main()
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