# PY2 -> buffer
# PY3 -> memoryview
# (rationale: a lot of functions do not accept memoryview on py2 - e.g. adler32)
def xbuffer(obj, offset=0, size=None):
if size is None:
size = len(obj) - offset
if PY2:
return buffer(obj, offset, size)
else:
return memoryview(obj)[offset : offset + size]
tmpf = None
blksize = 2 * 1024 * 1024 # XXX hardcoded
filesize = 512 * 1024 * 1024
nulladler32 = nulladler32_bysize(filesize)
ffadler32 = ffadler32_bysize(filesize)
# setup whole-hole OS file
def setup_module():
global tmpf
tmpf = NamedTemporaryFile(prefix="hole.", delete=False)
tmpf.close()
fd = os.open(tmpf.name, O_RDWR | O_TRUNC)
ftruncate(fd, filesize)
close(fd)
def teardown_module():
# Wendelin.bigfile | benchmarks for zodb backend
#
# TODO text
from wendelin.bigfile.file_zodb import ZBigFile
from wendelin.lib.mem import memset
from wendelin.lib.testing import getTestDB, Adler32, nulladler32_bysize, ffadler32_bysize
from wendelin.lib.zodb import dbclose
import transaction
testdb = None
from wendelin.bigfile.tests.bench_0virtmem import filesize, blksize # to get comparable timings
blen = filesize // blksize
nulladler32 = nulladler32_bysize(blen * blksize)
ffadler32 = ffadler32_bysize(blen * blksize)
def setup_module():
global testdb
testdb = getTestDB()
testdb.setup()
root = testdb.dbopen()
root['zfile'] = ZBigFile(blksize)
transaction.commit()
dbclose(root)
def teardown_module():
testdb.teardown()