comparison hgdemandimport/demandimportpy3.py @ 37843:670eb4fa1b86

demandimport: make module ignores a set (API)

The list of modules to ignore is used for membership testing. Yet
it is defined as a list.

Sets are more efficient for membership testing. So this commit converts
the module list to a set.

Since we took an API hit, I renamed the variable to further clarify
the change.

This appears to reduce the CPU time for running 300 invocations of
`hg log -r. -T '{rev}'` on my i7-6700K:

before: 18.64s
after:  18.44s

Differential Revision: https://phab.mercurial-scm.org/D3440

37840:853001c84114

    """This is a LazyLoader except it also follows the _deactivated global and
    the ignore list.
    """
    def exec_module(self, module):
        """Make the module load lazily."""
        if _deactivated or module.__name__ in ignore:
            self.loader.exec_module(module)
        else:
            super().exec_module(module)

# This is 3.6+ because with Python 3.5 it isn't possible to lazily load

        (_extensions_loader, importlib.machinery.EXTENSION_SUFFIXES),
        (_source_loader, importlib.machinery.SOURCE_SUFFIXES),
        (_bytecode_loader, importlib.machinery.BYTECODE_SUFFIXES),
    )

ignore = []

def init(ignorelist):
    global ignore
    ignore = ignorelist

def isenabled():
    return _makefinder in sys.path_hooks and not _deactivated

def disable():

37843:670eb4fa1b86

    """This is a LazyLoader except it also follows the _deactivated global and
    the ignore list.
    """
    def exec_module(self, module):
        """Make the module load lazily."""
        if _deactivated or module.__name__ in ignores:
            self.loader.exec_module(module)
        else:
            super().exec_module(module)

# This is 3.6+ because with Python 3.5 it isn't possible to lazily load

        (_extensions_loader, importlib.machinery.EXTENSION_SUFFIXES),
        (_source_loader, importlib.machinery.SOURCE_SUFFIXES),
        (_bytecode_loader, importlib.machinery.BYTECODE_SUFFIXES),
    )

ignores = set()

def init(ignoreset):
    global ignores
    ignores = ignoreset

def isenabled():
    return _makefinder in sys.path_hooks and not _deactivated

def disable():