dc3efb69cc
In preparation for changing the on-disk format eventually, as well as making the main code more readable.
210 lines
6.2 KiB
Python
Executable file
210 lines
6.2 KiB
Python
Executable file
#!/usr/bin/python
|
|
import sys, os, subprocess, glob, time, random
|
|
import options, jwack, atoi
|
|
|
|
optspec = """
|
|
redo [targets...]
|
|
--
|
|
j,jobs= maximum number of jobs to build at once
|
|
d,debug print dependency checks as they happen
|
|
v,verbose print commands as they are run
|
|
shuffle randomize the build order to find dependency bugs
|
|
"""
|
|
o = options.Options('redo', optspec)
|
|
(opt, flags, extra) = o.parse(sys.argv[1:])
|
|
|
|
targets = extra or ['all']
|
|
|
|
if opt.debug:
|
|
os.environ['REDO_DEBUG'] = str(opt.debug or 0)
|
|
if opt.verbose:
|
|
os.environ['REDO_VERBOSE'] = '1'
|
|
if opt.shuffle:
|
|
os.environ['REDO_SHUFFLE'] = '1'
|
|
|
|
if not os.environ.get('REDO_BASE', ''):
|
|
base = os.path.commonprefix([os.path.abspath(os.path.dirname(t))
|
|
for t in targets] + [os.getcwd()])
|
|
bsplit = base.split('/')
|
|
for i in range(len(bsplit)-1, 0, -1):
|
|
newbase = '/'.join(bsplit[:i])
|
|
if os.path.exists(newbase + '/.redo'):
|
|
base = newbase
|
|
break
|
|
os.environ['REDO_BASE'] = base
|
|
os.environ['REDO_STARTDIR'] = os.getcwd()
|
|
os.environ['REDO'] = os.path.abspath(sys.argv[0])
|
|
|
|
# FIXME: just wiping out all the locks is kind of cheating. But we
|
|
# only do this from the toplevel redo process, so unless the user
|
|
# deliberately starts more than one redo on the same repository, it's
|
|
# sort of ok.
|
|
for f in glob.glob('%s/.redo/lock^*' % base):
|
|
os.unlink(f)
|
|
|
|
|
|
import vars, state
|
|
from helpers import *
|
|
|
|
|
|
class BuildError(Exception):
|
|
pass
|
|
class BuildLocked(Exception):
|
|
pass
|
|
|
|
|
|
def _possible_do_files(t):
|
|
yield "%s.do" % t, t, ''
|
|
dirname,filename = os.path.split(t)
|
|
l = filename.split('.')
|
|
l[0] = os.path.join(dirname, l[0])
|
|
for i in range(1,len(l)+1):
|
|
basename = '.'.join(l[:i])
|
|
ext = '.'.join(l[i:])
|
|
if ext: ext = '.' + ext
|
|
yield (os.path.join(dirname, "default%s.do" % ext),
|
|
os.path.join(dirname, basename), ext)
|
|
|
|
|
|
def find_do_file(t):
|
|
for dofile,basename,ext in _possible_do_files(t):
|
|
debug2('%s: %s ?\n' % (t, dofile))
|
|
if os.path.exists(dofile):
|
|
state.add_dep(t, 'm', dofile)
|
|
return dofile,basename,ext
|
|
else:
|
|
state.add_dep(t, 'c', dofile)
|
|
return None,None,None
|
|
|
|
|
|
def _preexec(t):
|
|
os.environ['REDO_TARGET'] = os.path.basename(t)
|
|
os.environ['REDO_DEPTH'] = vars.DEPTH + ' '
|
|
dn = os.path.dirname(t)
|
|
if dn:
|
|
os.chdir(dn)
|
|
|
|
|
|
def _build(t):
|
|
if (os.path.exists(t) and not state.is_generated(t)
|
|
and not os.path.exists('%s.do' % t)):
|
|
# an existing source file that is not marked as a generated file.
|
|
# This step is mentioned by djb in his notes. It turns out to be
|
|
# important to prevent infinite recursion. For example, a rule
|
|
# called default.c.do could be used to try to produce hello.c,
|
|
# which is undesirable since hello.c existed already.
|
|
state.stamp(t)
|
|
return # success
|
|
state.unstamp(t)
|
|
state.start(t)
|
|
(dofile, basename, ext) = find_do_file(t)
|
|
if not dofile:
|
|
raise BuildError('no rule to make %r' % t)
|
|
state.stamp(dofile)
|
|
unlink(t)
|
|
tmpname = '%s.redo.tmp' % t
|
|
unlink(tmpname)
|
|
f = open(tmpname, 'w+')
|
|
|
|
# this will run in the dofile's directory, so use only basenames here
|
|
argv = ['sh', '-e',
|
|
os.path.basename(dofile),
|
|
os.path.basename(basename), # target name (extension removed)
|
|
ext, # extension (if any), including leading dot
|
|
os.path.basename(tmpname) # randomized output file name
|
|
]
|
|
if vars.VERBOSE:
|
|
argv[1] += 'v'
|
|
log_('\n')
|
|
log('%s\n' % relpath(t, vars.STARTDIR))
|
|
rv = subprocess.call(argv, preexec_fn=lambda: _preexec(t),
|
|
stdout=f.fileno())
|
|
if rv==0:
|
|
if os.path.exists(tmpname) and os.stat(tmpname).st_size:
|
|
# there's a race condition here, but if the tmpfile disappears
|
|
# at *this* point you deserve to get an error, because you're
|
|
# doing something totally scary.
|
|
os.rename(tmpname, t)
|
|
else:
|
|
unlink(tmpname)
|
|
state.stamp(t)
|
|
else:
|
|
unlink(tmpname)
|
|
state.unstamp(t)
|
|
f.close()
|
|
if rv != 0:
|
|
raise BuildError('%s: exit code %d' % (t,rv))
|
|
if vars.VERBOSE:
|
|
log('%s (done)\n\n' % relpath(t, vars.STARTDIR))
|
|
|
|
|
|
def build(t):
|
|
mkdirp('%s/.redo' % vars.BASE)
|
|
lock = state.Lock(t)
|
|
lock.lock()
|
|
if not lock.owned:
|
|
log('%s (locked...)\n' % relpath(t, vars.STARTDIR))
|
|
os._exit(199)
|
|
try:
|
|
try:
|
|
return _build(t)
|
|
except BuildError, e:
|
|
err('%s\n' % e)
|
|
finally:
|
|
lock.unlock()
|
|
os._exit(1)
|
|
|
|
|
|
def main():
|
|
retcode = 0
|
|
locked = {}
|
|
waits = {}
|
|
if vars.SHUFFLE:
|
|
random.shuffle(targets)
|
|
for t in targets:
|
|
if os.path.exists('%s/all.do' % t):
|
|
# t is a directory, but it has a default target
|
|
t = '%s/all' % t
|
|
waits[t] = jwack.start_job(t, lambda: build(t))
|
|
jwack.wait_all()
|
|
for t,pd in waits.items():
|
|
assert(pd.rv != None)
|
|
if pd.rv == 199:
|
|
# target was locked
|
|
locked[t] = 1
|
|
elif pd.rv:
|
|
err('%s: exit code was %r\n' % (t, pd.rv))
|
|
retcode = 1
|
|
for t in locked.keys():
|
|
lock = state.Lock(t)
|
|
lock.wait()
|
|
relp = relpath(t, vars.STARTDIR)
|
|
log('%s (...unlocked!)\n' % relp)
|
|
if state.stamped(t) == None:
|
|
err('%s: failed in another thread\n' % relp)
|
|
retcode = 2
|
|
return retcode
|
|
|
|
|
|
if not vars.DEPTH:
|
|
# toplevel call to redo
|
|
exenames = [os.path.abspath(sys.argv[0]), os.path.realpath(sys.argv[0])]
|
|
if exenames[0] == exenames[1]:
|
|
exenames = [exenames[0]]
|
|
dirnames = [os.path.dirname(p) for p in exenames]
|
|
os.environ['PATH'] = ':'.join(dirnames) + ':' + os.environ['PATH']
|
|
|
|
try:
|
|
j = atoi.atoi(opt.jobs or 1)
|
|
if j < 1 or j > 1000:
|
|
err('invalid --jobs value: %r\n' % opt.jobs)
|
|
jwack.setup(j)
|
|
try:
|
|
retcode = main()
|
|
finally:
|
|
jwack.force_return_tokens()
|
|
if retcode:
|
|
err('exiting: %d\n' % retcode)
|
|
sys.exit(retcode)
|
|
except KeyboardInterrupt:
|
|
sys.exit(200)
|