path: root/test/Parallel/multiple-parents.py

#!/usr/bin/env python
#
# MIT License
#
# Copyright The SCons Foundation
#
# Permission is hereby granted, free of charge, to any person obtaining
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# without limitation the rights to use, copy, modify, merge, publish,
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# The above copyright notice and this permission notice shall be included
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"""
Verify that a failed build action with -j works as expected.
"""

import sys

import TestSCons

_python_ = TestSCons._python_

try:
    import threading
except ImportError:
    # if threads are not supported, then
    # there is nothing to test
    TestCmd.no_result()
    sys.exit()


test = TestSCons.TestSCons()

# Test that we can handle parallel builds with a dependency graph
# where:
#    a) Some nodes have multiple parents
#    b) Some targets fail building
#    c) Some targets succeed building
#    d) Some children are ignored
#    e) Some children are pre-requesites
#    f) Some children have side-effects
#    g) Some sources are missing
#    h) Builds that are interrupted

test.write('SConstruct', """
vars = Variables()
vars.Add(BoolVariable('interrupt', 'Interrupt the build.', False))
DefaultEnvironment(tools=[])  # test speedup
varEnv = Environment(variables=vars)

def fail_action(target=None, source=None, env=None):
    return 2

def simulate_keyboard_interrupt(target=None, source=None, env=None):
    # Directly invoked the SIGINT handler to simulate a
    # KeyboardInterrupt. This hack is necessary because there is no
    # easy way to get access to the current Job/Taskmaster object.
    import signal

    handler = signal.getsignal(signal.SIGINT)
    handler(signal.SIGINT, None)
    return 0

interrupt = Command(target='interrupt', source='', action=simulate_keyboard_interrupt)

touch0 = Touch('${TARGETS[0]}')
touch1 = Touch('${TARGETS[1]}')
touch2 = Touch('${TARGETS[2]}')

failed0 = Command(target='failed00', source='', action=fail_action)
ok0 = Command(
    target=['ok00a', 'ok00b', 'ok00c'],
    source='',
    action=[touch0, touch1, touch2],
)
prereq0 = Command(target='prereq00', source='', action=touch0)
ignore0 = Command(target='ignore00', source='', action=touch0)
igreq0 = Command(target='igreq00', source='', action=touch0)
missing0 = Command(target='missing00', source='MissingSrc', action=touch0)
withSE0 = Command(
    target=['withSE00a', 'withSE00b', 'withSE00c'],
    source='',
    action=[touch0, touch1, touch2, Touch('side_effect')],
)
SideEffect('side_effect', withSE0)

prev_level = failed0 + ok0 + ignore0 + missing0 + withSE0
prev_prereq = prereq0
prev_ignore = ignore0
prev_igreq = igreq0

if varEnv['interrupt']:
    prev_level = prev_level + interrupt

for i in range(1, 20):

    failed = Command(target='failed%02d' % i, source='', action=fail_action)
    ok = Command(
        target=['ok%02da' % i, 'ok%02db' % i, 'ok%02dc' % i],
        source='',
        action=[touch0, touch1, touch2],
    )
    prereq = Command(target='prereq%02d' % i, source='', action=touch0)
    ignore = Command(target='ignore%02d' % i, source='', action=touch0)
    igreq = Command(target='igreq%02d' % i, source='', action=touch0)
    missing = Command(target='missing%02d' % i, source='MissingSrc', action=touch0)
    withSE = Command(
        target=['withSE%02da' % i, 'withSE%02db' % i, 'withSE%02dc' % i],
        source='',
        action=[touch0, touch1, touch2, Touch('side_effect')],
    )
    SideEffect('side_effect', withSE)

    next_level = failed + ok + ignore + igreq + missing + withSE

    for j in range(1, 10):
        a = Alias('a%02d%02d' % (i, j), prev_level)

        Requires(a, prev_prereq)
        Ignore(a, prev_ignore)

        Requires(a, prev_igreq)
        Ignore(a, prev_igreq)

        next_level = next_level + a

    prev_level = next_level
    prev_prereq = prereq
    prev_ignore = ignore
    prev_igreq = igreq

all = Alias('all', prev_level)

Requires(all, prev_prereq)
Ignore(all, prev_ignore)

Requires(all, prev_igreq)
Ignore(all, prev_igreq)

Default(all)
""")

re_error = """\
(scons: \\*\\*\\* \\[failed\\d+] Error 2\\n)|\
(scons: \\*\\*\\* \\[missing\\d+] Source `MissingSrc' not found, needed by target `missing\\d+'\\.(  Stop\\.)?\\n)|\
(scons: \\*\\*\\* \\[\\w+] Build interrupted\\.\\n)|\
(scons: Build interrupted\\.\\n)\
"""

re_errors = "(" + re_error + ")+"

# Make the script chatty so lack of output doesn't fool buildbot into
# thinking it's hung.

sys.stdout.write('Initial build.\n')
test.run(arguments = 'all',
         status = 2,
         stderr = "scons: *** [failed19] Error 2\n")
test.must_not_exist(test.workpath('side_effect'))
for i in range(20):
    test.must_not_exist(test.workpath('ok%02da' % i))
    test.must_not_exist(test.workpath('ok%02db' % i))
    test.must_not_exist(test.workpath('ok%02dc' % i))
    test.must_not_exist(test.workpath('ignore%02d' % i))
    test.must_not_exist(test.workpath('withSE%02da' % i))
    test.must_not_exist(test.workpath('withSE%02db' % i))
    test.must_not_exist(test.workpath('withSE%02dc' % i))

# prereq19 and igreq19 will exist because, as prerequisites,
# they are now evaluated *before* the direct children of the Node.
for i in range(19):
    test.must_not_exist(test.workpath('prereq%02d' % i))
    test.must_not_exist(test.workpath('igreq%02d' % i))
test.must_exist(test.workpath('prereq19'))
test.must_exist(test.workpath('igreq19'))


sys.stdout.write('-j8 all\n')
for i in range(3):
    test.run(arguments = '-c all')

    test.run(arguments = '-j8 all',
             status = 2,
             stderr = re_errors,
             match=TestSCons.match_re_dotall)


sys.stdout.write('-j 8 -k all\n')
for i in range(3):
    test.run(arguments = '-c all')

    test.run(arguments = '-j 8 -k all',
             status = 2,
             stderr = re_errors,
             match=TestSCons.match_re_dotall)
    test.must_exist(test.workpath('side_effect'))
    for i in range(20):
        test.must_exist(test.workpath('ok%02da' % i))
        test.must_exist(test.workpath('ok%02db' % i))
        test.must_exist(test.workpath('ok%02dc' % i))
        test.must_exist(test.workpath('prereq%02d' % i))
        test.must_not_exist(test.workpath('ignore%02d' % i))
        test.must_exist(test.workpath('igreq%02d' % i))
        test.must_exist(test.workpath('withSE%02da' % i))
        test.must_exist(test.workpath('withSE%02db' % i))
        test.must_exist(test.workpath('withSE%02dc' % i))


sys.stdout.write('all --random\n')
for i in range(3):
    test.run(arguments = 'all --random',
             status = 2,
             stderr = re_errors,
             match=TestSCons.match_re_dotall)


sys.stdout.write('-j8 --random all\n')
for i in range(3):
    test.run(arguments = '-c all')

    test.run(arguments = '-j8 --random all',
             status = 2,
             stderr = re_errors,
             match=TestSCons.match_re_dotall)


sys.stdout.write('-j8 -k --random all\n')
for i in range(3):
    test.run(arguments = '-c all')

    test.run(arguments = '-j 8 -k --random all',
             status = 2,
             stderr = re_errors,
             match=TestSCons.match_re_dotall)
    test.must_exist(test.workpath('side_effect'))
    for i in range(20):
        test.must_exist(test.workpath('ok%02da' % i))
        test.must_exist(test.workpath('ok%02db' % i))
        test.must_exist(test.workpath('ok%02dc' % i))
        test.must_exist(test.workpath('prereq%02d' % i))
        test.must_not_exist(test.workpath('ignore%02d' % i))
        test.must_exist(test.workpath('igreq%02d' % i))
        test.must_exist(test.workpath('withSE%02da' % i))
        test.must_exist(test.workpath('withSE%02db' % i))
        test.must_exist(test.workpath('withSE%02dc' % i))


sys.stdout.write('-j8 -k --random all interupt=yes\n')
for i in range(3):
    test.run(arguments = '-c all')

    test.run(arguments = '-j 8 -k --random interrupt=yes all',
             status = 2,
             stderr = re_errors,
             match=TestSCons.match_re_dotall)


test.pass_test()

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