1cb000ece1
In redo-ifchange, this might be a good idea, since you might just want to set a dependency on it, so we won't say anything from inside builder.py. But if you're calling redo.py, that means you expect it to be rebuilt, since there's no other reason to try. So print a warning. (This is what make does, more or less.)
129 lines
4.2 KiB
Python
Executable file
129 lines
4.2 KiB
Python
Executable file
#!/usr/bin/python
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import sys, os, errno, stat
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if not sys.argv[1:]:
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sys.exit(0) # nothing to do, so we can't possibly do it wrong
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import vars_init
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vars_init.init(sys.argv[1:])
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import vars, state, builder, jwack
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from helpers import unlink
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from log import debug, debug2, err
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CLEAN = 0
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DIRTY = 1
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def dirty_deps(f, depth, max_changed):
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if vars.DEBUG >= 1:
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debug('%s?%s\n' % (depth, f.nicename()))
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if f.failed_runid:
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debug('%s-- DIRTY (failed last time)\n' % depth)
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return DIRTY
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if f.changed_runid == None:
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debug('%s-- DIRTY (never built)\n' % depth)
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return DIRTY
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if f.changed_runid > max_changed:
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debug('%s-- DIRTY (built)\n' % depth)
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return DIRTY # has been built more recently than parent
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if f.is_checked():
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if vars.DEBUG >= 1:
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debug('%s-- CLEAN (checked)\n' % depth)
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return CLEAN # has already been checked during this session
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if not f.stamp:
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debug('%s-- DIRTY (no stamp)\n' % depth)
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return DIRTY
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newstamp = f.read_stamp()
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if f.stamp != newstamp:
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if newstamp == state.STAMP_MISSING:
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debug('%s-- DIRTY (missing)\n' % depth)
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else:
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debug('%s-- DIRTY (mtime)\n' % depth)
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if f.csum:
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return [f]
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else:
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return DIRTY
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must_build = []
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for mode,f2 in f.deps():
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dirty = CLEAN
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if mode == 'c':
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if os.path.exists(os.path.join(vars.BASE, f2.name)):
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debug('%s-- DIRTY (created)\n' % depth)
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dirty = DIRTY
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elif mode == 'm':
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sub = dirty_deps(f2, depth = depth + ' ',
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max_changed = max(f.changed_runid,
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f.checked_runid))
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if sub:
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debug('%s-- DIRTY (sub)\n' % depth)
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dirty = sub
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else:
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assert(mode in ('c','m'))
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if not f.csum:
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# f is a "normal" target: dirty f2 means f is instantly dirty
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if dirty:
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# if dirty==DIRTY, this means f is definitely dirty.
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# if dirty==[...], it's a list of the uncertain children.
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return dirty
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else:
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# f is "checksummable": dirty f2 means f needs to redo,
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# but f might turn out to be clean after that (ie. our parent
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# might not be dirty).
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if dirty == DIRTY:
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# f2 is definitely dirty, so f definitely needs to
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# redo. However, after that, f might turn out to be
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# unchanged.
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return [f]
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elif isinstance(dirty,list):
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# our child f2 might be dirty, but it's not sure yet. It's
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# given us a list of targets we have to redo in order to
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# be sure.
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must_build += dirty
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if must_build:
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# f is *maybe* dirty because at least one of its children is maybe
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# dirty. must_build has accumulated a list of "topmost" uncertain
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# objects in the tree. If we build all those, we can then
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# redo-ifchange f and it won't have any uncertainty next time.
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return must_build
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# if we get here, it's because the target is clean
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if f.is_override:
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builder.warn_override(f.name)
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f.set_checked()
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f.save()
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return CLEAN
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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 builder.ImmediateReturn(32)
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dirty = dirty_deps(f, depth = '', max_changed = vars.RUNID)
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return dirty==[f] and DIRTY or dirty
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rv = 202
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try:
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if vars.TARGET and not vars.UNLOCKED:
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me = os.path.join(vars.STARTDIR,
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os.path.join(vars.PWD, vars.TARGET))
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f = state.File(name=me)
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debug2('TARGET: %r %r %r\n' % (vars.STARTDIR, vars.PWD, vars.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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try:
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targets = sys.argv[1:]
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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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rv = builder.main(targets, should_build)
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finally:
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jwack.force_return_tokens()
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except KeyboardInterrupt:
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sys.exit(200)
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state.commit()
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sys.exit(rv)
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