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atrcopy
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First profiling speedup: cache call to np_byte_bounds

This commit is contained in:
Rob McMullen 2017-10-05 19:41:51 -07:00
parent acd52f0eaa
commit 678148b6a1
1 changed files with 16 additions and 9 deletions
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25
atrcopy/segments.py
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@ -160,6 +160,7 @@ class SegmentData(object):
extra = UserExtraData()
self.extra = extra
self.reverse_index_mapping = None
self.calc_lookups()
def __str__(self):
return "SegmentData id=%x indexed=%s data=%s len=%s" % (id(self), self.is_indexed, type(self.data), len(self.data))
@ -179,6 +180,7 @@ class SegmentData(object):
self.style = newstyle
else:
raise ValueError("Can't resize a view of a segment")
self.calc_lookups()
def replace_arrays(self, base_raw):
newsize = len(base_raw)
@ -198,6 +200,17 @@ class SegmentData(object):
self.style = base_raw.style[start:end]
else:
raise ValueError("The base SegmentData object should use the resize method to replace arrays")
self.calc_lookups()
def calc_lookups(self):
if self.is_base:
# these values not needed if indexed or is base array, so force bad
# values that will raise exception if they are used
self.data_start, self.data_end = None, None
self.base_start, self.base_end = None, None
else:
self.data_start, self.data_end = np.byte_bounds(self.data)
self.base_start, self.base_end = np.byte_bounds(self.data.base)
@property
def bufferedio(self):
@ -247,9 +260,7 @@ class SegmentData(object):
else:
basearray = self.data
return 0, len(basearray)
data_start, data_end = np.byte_bounds(self.data)
base_start, base_end = np.byte_bounds(self.data.base)
return int(data_start - base_start), int(data_end - base_start)
return int(self.data_start - self.base_start), int(self.data_end - self.base_start)
def get_raw_index(self, i):
"""Get index into base array's raw data, given the index into this
@ -259,9 +270,7 @@ class SegmentData(object):
return int(self.order[i])
if self.data.base is None:
return int(i)
data_start, data_end = np.byte_bounds(self.data)
base_start, base_end = np.byte_bounds(self.data.base)
return int(data_start - base_start + i)
return int(self.data_start - self.base_start + i)
def get_indexes_from_base(self):
"""Get array of indexes from the base array, as if this raw data were
@ -343,9 +352,7 @@ class SegmentData(object):
else:
if self.data.base is None:
return int(base_index)
data_start, data_end = np.byte_bounds(self.data)
base_start, base_end = np.byte_bounds(self.data.base)
return int(base_start + base_index - data_start)
return int(self.base_start + base_index - self.data_start)
class DefaultSegment(object):