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BUG: Fix memory leak in Rolling.min and Rolling.max (#25893) #25926

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Merged
merged 6 commits into from
Apr 1, 2019
Merged

BUG: Fix memory leak in Rolling.min and Rolling.max (#25893) #25926

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f055be9
BUG: Fix memory leak in Rolling.min and Rolling.max (#25893)
ArtificialQualia Mar 29, 2019
d451801
remove uneccesary args, add const
ArtificialQualia Mar 30, 2019
42d3140
added asv tests, improved fix
ArtificialQualia Mar 30, 2019
5530f5b
Merge branch 'master' into fix-memory-leak
ArtificialQualia Mar 30, 2019
d9ca438
add comments, reduce ASV test runtime
ArtificialQualia Mar 30, 2019
1d9f93a
ASV testing changes
ArtificialQualia Mar 31, 2019
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1 change: 1 addition & 0 deletions doc/source/whatsnew/v0.25.0.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -372,6 +372,7 @@ Groupby/Resample/Rolling
- Bug in :func:`pandas.core.groupby.GroupBy.agg` when applying a aggregation function to timezone aware data (:issue:`23683`)
- Bug in :func:`pandas.core.groupby.GroupBy.first` and :func:`pandas.core.groupby.GroupBy.last` where timezone information would be dropped (:issue:`21603`)
- Ensured that ordering of outputs in ``groupby`` aggregation functions is consistent across all versions of Python (:issue:`25692`)
- Bug in :meth:`pandas.core.window.Rolling.min` and :meth:`pandas.core.window.Rolling.max` that caused a memory leak (:issue:`25893`)


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10 changes: 4 additions & 6 deletions pandas/_libs/window.pyx
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Expand Up @@ -1251,7 +1251,7 @@ cdef _roll_min_max(ndarray[numeric] values, int64_t win, int64_t minp,
ignoring NaNs.
"""
cdef:
ndarray[int64_t] starti, endi
int64_t[:] starti, endi
int64_t N
bint is_variable

Expand All @@ -1263,12 +1263,12 @@ cdef _roll_min_max(ndarray[numeric] values, int64_t win, int64_t minp,
return _roll_min_max_variable(values, starti, endi, N, win, minp,
is_max)
else:
return _roll_min_max_fixed(values, starti, endi, N, win, minp, is_max)
return _roll_min_max_fixed(values, N, win, minp, is_max)


cdef _roll_min_max_variable(ndarray[numeric] values,
ndarray[int64_t] starti,
ndarray[int64_t] endi,
const int64_t[:] starti,
const int64_t[:] endi,
int64_t N,
int64_t win,
int64_t minp,
Expand Down Expand Up @@ -1349,8 +1349,6 @@ cdef _roll_min_max_variable(ndarray[numeric] values,


cdef _roll_min_max_fixed(ndarray[numeric] values,
ndarray[int64_t] starti,
ndarray[int64_t] endi,
int64_t N,
int64_t win,
int64_t minp,
Expand Down