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update notes to talk about -X showrefcount

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Benjamin Peterson 2014-03-30 17:16:09 -04:00
parent 3da9fbbe83
commit ff57aefa97
1 changed files with 5 additions and 3 deletions
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Misc/SpecialBuilds.txt
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@ -13,12 +13,14 @@ Py_REF_DEBUG
------------ ------------
Turn on aggregate reference counting. This arranges that extern _Py_RefTotal Turn on aggregate reference counting. This arranges that extern _Py_RefTotal
hold a count of all references, the sum of ob_refcnt across all objects. In a hold a count of all references, the sum of ob_refcnt across all objects.
debug-mode build, this is where the "8288" comes from in Passing ``-X showrefcount`` on the command line causes the interactive
interpreter to print the reference count total as well the number of memory
blocks allocated after each statement:
>>> 23 >>> 23
23 23
[8288 refs] [8288 refs, 14332 blocks]
>>> >>>
Note that if this count increases when you're not storing away new objects, Note that if this count increases when you're not storing away new objects,