contrib/perf.py

39825:68ea1f8dcb84

except ImportError:
    pass
try:
    from mercurial import pycompat
    getargspec = pycompat.getargspec  # added to module after 4.5
except (ImportError, AttributeError):
    import inspect
    getargspec = inspect.getargspec

try:
    # 4.7+
    queue = pycompat.queue.Queue
except (AttributeError, ImportError):

# for "historical portability":
# define util.safehasattr forcibly, because util.safehasattr has been
# available since 1.9.3 (or 94b200a11cf7)
_undefined = object()
def safehasattr(thing, attr):
    return getattr(thing, attr, _undefined) is not _undefined
setattr(util, 'safehasattr', safehasattr)

# for "historical portability":
# define util.timer forcibly, because util.timer has been available
# since ae5d60bb70c9

        if ignoremissing:
            return None
        raise error.Abort((b"missing attribute %s of %s might break assumption"
                           b" of performance measurement") % (name, obj))

    origvalue = getattr(obj, name)
    class attrutil(object):
        def set(self, newvalue):
            setattr(obj, name, newvalue)
        def restore(self):
            setattr(obj, name, origvalue)

    return attrutil()

# utilities to examine each internal API changes

39826:6787dc1b93a9

except ImportError:
    pass
try:
    from mercurial import pycompat
    getargspec = pycompat.getargspec  # added to module after 4.5
    _sysstr = pycompat.sysstr         # since 4.0 (or 2219f4f82ede)
except (ImportError, AttributeError):
    import inspect
    getargspec = inspect.getargspec
    _sysstr = lambda x: x             # no py3 support

try:
    # 4.7+
    queue = pycompat.queue.Queue
except (AttributeError, ImportError):

# for "historical portability":
# define util.safehasattr forcibly, because util.safehasattr has been
# available since 1.9.3 (or 94b200a11cf7)
_undefined = object()
def safehasattr(thing, attr):
    return getattr(thing, _sysstr(attr), _undefined) is not _undefined
setattr(util, 'safehasattr', safehasattr)

# for "historical portability":
# define util.timer forcibly, because util.timer has been available
# since ae5d60bb70c9

        if ignoremissing:
            return None
        raise error.Abort((b"missing attribute %s of %s might break assumption"
                           b" of performance measurement") % (name, obj))

    origvalue = getattr(obj, _sysstr(name))
    class attrutil(object):
        def set(self, newvalue):
            setattr(obj, _sysstr(name), newvalue)
        def restore(self):
            setattr(obj, _sysstr(name), origvalue)

    return attrutil()

# utilities to examine each internal API changes