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Statistic difference on memory allocations between an old and a new
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Frame of a traceback.
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Sequence of Frame instances sorted from the most recent frame
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Get the traceback where the Python object *obj* was allocated.
Return a Traceback instance.
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did not trace the allocation of the object.
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Trace of a memory block.
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__match_frame= s zFilter.__match_framec C s | j | | � | j AS)N)�_Filter__match_framer^ )r r5 r7 r r r � _match_frameF s zFilter._match_framec s^ � j r: t � f d d � | D� � r/ � j S� j Sn | d \ } } � j | | � Sd S)Nc 3 s' | ] \ } } � j | | � Vq d S)N)rc )r? r5 r7 )r r r rA K s z*Filter._match_traceback.<locals>.<genexpr>r )r` �anyr^ rd )r r r5 r7 r )r r �_match_tracebackI s
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Snapshot of traces of memory blocks allocated by Python.
c C s t | � | _ | | _ d S)N)rT rV �traceback_limit)r rV rh r r r r Z s zSnapshot.__init__c C s3 t | d � � } t j | | t j � Wd QRXd S)z1
Write the snapshot into a file.
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Load a snapshot from a file.
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Snapshot.loadc s` | d � | r3 t � f d d � | D� � s3 d S| r\ t � f d d � | D� � r\ d Sd S)Nr6 c 3 s | ] } | j � � Vq d S)N)rf )r? � trace_filter)r r r rA r s z)Snapshot._filter_trace.<locals>.<genexpr>Fc 3 s | ] } | j � � Vq d S)N)rf )r? rp )r r r rA v s T)re )r �include_filters�exclude_filtersr@ r )r r �
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zSnapshot._filter_tracec s� t | t � s( t d t | � j � � | r� g � g � x4 | D], } | j r` � j | � qA � j | � qA W� � � f d d � � j j D� } n � j j j � } t
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Create a new Snapshot instance with a filtered traces sequence, filters
is a list of Filter instances. If filters is an empty list, return a
new Snapshot instance with a copy of the traces.
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<listcomp>� s z*Snapshot.filter_traces.<locals>.<listcomp>) rB r � TypeError�typer" r^ r, rV rU �copyrg rh )r �filtersrp Z
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#zSnapshot._group_byFc C sA | j | | � } t | j � � } | j d d d t j � | S)zd
Group statistics by key_type. Return a sorted list of Statistic
instances.
�reverseT�key)r~ �list�values�sortr r! )r r| r} Zgroupedr/ r r r r/ � s zSnapshot.statisticsc C sP | j | | � } | j | | � } t | | � } | j d d d t j � | S)z�
Compute the differences with an old snapshot old_snapshot. Get
statistics as a sorted list of StatisticDiff instances, grouped by
group_by.
r Tr� )r~ r1 r� r' r! )r Z old_snapshotr| r} r. r- r/ r r r �
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Take a snapshot of traces of memory blocks allocated by Python.
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