Message 340411 - Python tracker

Message340411

Author	lzhao
Recipients	lzhao
Date	2019-04-17.15:53:41
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1555516421.89.0.141629661161.issue36648@roundup.psfhosted.org>
In-reply-to

Content
anonymous mappings is not part of the POSIX standard, python user just need to specified -1 as fd value when do anonymous map, for example: m = mmap.mmap(-1, 100) then python adapter module(mmapmodule.c) try to specify MAP_SHARED or MAP_PRIVATE based on operate system requirement, Linux require MAP_SHARED, VxWorks require MAP_PRIVATE, this different should be hidden by this module, and python user won't be affected. Currently, mmap is only adapted for the system which use MAP_SHARED when do anonymous map, VxWorks need be supported. https://en.wikipedia.org/wiki/Mmap

Content

anonymous mappings is not part of the POSIX standard, python user just need to specified -1 as fd value when do anonymous map, for example:

m = mmap.mmap(-1, 100)

then python adapter module(mmapmodule.c) try to specify MAP_SHARED or MAP_PRIVATE based on operate system requirement, Linux require MAP_SHARED, VxWorks require MAP_PRIVATE, this different should be hidden by this module, and python user won't be affected.

Currently, mmap is only adapted for the system which use MAP_SHARED when do anonymous map, VxWorks need be supported.

https://en.wikipedia.org/wiki/Mmap

History
Date	User	Action	Args
2019-04-17 15:53:41	lzhao	set	recipients: + lzhao
2019-04-17 15:53:41	lzhao	set	messageid: <1555516421.89.0.141629661161.issue36648@roundup.psfhosted.org>
2019-04-17 15:53:41	lzhao	link	issue36648 messages
2019-04-17 15:53:41	lzhao	create