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.
70 lines
2.3 KiB
Python
70 lines
2.3 KiB
Python
"""redo-ifchange: build the given targets if they have changed."""
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import os, sys, traceback
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from . import env, builder, deps, helpers, jobserver, logs, state
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from .logs import debug2, err
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def should_build(t):
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f = state.File(name=t)
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if f.is_failed():
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raise helpers.ImmediateReturn(32)
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dirty = deps.isdirty(f, depth='', max_changed=env.v.RUNID,
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already_checked=[])
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return f.is_generated, dirty == [f] and deps.DIRTY or dirty
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def main():
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rv = 202
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try:
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targets = sys.argv[1:]
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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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if env.is_toplevel and env.v.LOG:
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builder.close_stdin()
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builder.start_stdin_log_reader(
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status=True, details=True,
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pretty=True, color=True, debug_locks=False, debug_pids=False)
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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.v.TARGET and not env.v.UNLOCKED:
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me = os.path.join(env.v.STARTDIR,
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os.path.join(env.v.PWD, env.v.TARGET))
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f = state.File(name=me)
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debug2('TARGET: %r %r %r\n'
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% (env.v.STARTDIR, env.v.PWD, env.v.TARGET))
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else:
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f = me = None
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debug2('redo-ifchange: not adding depends.\n')
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jobserver.setup(0)
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try:
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if f:
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for t in targets:
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f.add_dep('m', t)
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f.save()
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state.commit()
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rv = builder.run(targets, should_build)
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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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rv = 1
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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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state.commit()
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if env.is_toplevel:
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builder.await_log_reader()
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sys.exit(rv)
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if __name__ == '__main__':
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main()
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