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mirror of https://github.com/trezor/trezor-firmware.git synced 2024-12-04 21:48:17 +00:00
trezor-firmware/src/trezor/utils.py
2016-12-12 15:26:49 +01:00

56 lines
1.2 KiB
Python

import sys
import gc
from TrezorUtils import halt, memcpy
from trezor import log
type_gen = type((lambda: (yield))())
type_genfunc = type((lambda: (yield)))
def _unimport_func(func):
def inner(*args, **kwargs):
mods = set(sys.modules)
try:
ret = func(*args, **kwargs)
finally:
for mod in sys.modules:
if mod not in mods:
log.debug(__name__, 'unimport %s', mod)
del sys.modules[mod]
gc.collect()
return ret
return inner
def _unimport_genfunc(genfunc):
async def inner(*args, **kwargs):
mods = set(sys.modules)
try:
ret = await genfunc(*args, **kwargs)
finally:
for mod in sys.modules:
if mod not in mods:
log.debug(__name__, 'unimport %s', mod)
del sys.modules[mod]
gc.collect()
return ret
return inner
def unimport(func):
if isinstance(func, type_genfunc):
return _unimport_genfunc(func)
else:
return _unimport_func(func)
def chunks(l, n):
for i in range(0, len(l), n):
yield l[i:i + n]
def ensure(cond):
if not cond:
raise AssertionError()