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Posted to bugs@apr.apache.org by bu...@apache.org on 2007/11/05 08:38:54 UTC
DO NOT REPLY [Bug 43793] New: - builtin atomics on Windows
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http://issues.apache.org/bugzilla/show_bug.cgi?id=43793
Summary: builtin atomics on Windows
Product: APR
Version: HEAD
Platform: PC
OS/Version: Windows XP
Status: NEW
Keywords: PatchAvailable
Severity: enhancement
Priority: P3
Component: APR
AssignedTo: bugs@apr.apache.org
ReportedBy: serai@lans-tv.com
http://msdn2.microsoft.com/en-us/library/26td21ds(vs.71).aspx
VC++ 7.1 has
_InterlockedCompareExchange
_InterlockedDecrement
_InterlockedExchange
_InterlockedExchangeAdd
_InterlockedIncrement
I'm not sure if compilers prior to 7.1 have them.
http://msdn2.microsoft.com/en-us/library/wt813x6k(VS.80).aspx
on x86_64 and Itanium VC++ 8 has
_InterlockedExchangePointer
_InterlockedCompareExchangePointer
These are more useful than atomics of Win32API because:
1) faster
2) They accept both singed and unsigned variable acceptable,
so there's no need to use casts.
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DO NOT REPLY [Bug 43793] - builtin atomics on Windows
Posted by bu...@apache.org.
DO NOT REPLY TO THIS EMAIL, BUT PLEASE POST YOUR BUG�
RELATED COMMENTS THROUGH THE WEB INTERFACE AVAILABLE AT
<http://issues.apache.org/bugzilla/show_bug.cgi?id=43793>.
ANY REPLY MADE TO THIS MESSAGE WILL NOT BE COLLECTED AND�
INSERTED IN THE BUG DATABASE.
http://issues.apache.org/bugzilla/show_bug.cgi?id=43793
------- Additional Comments From serai@lans-tv.com 2007-11-05 00:02 -------
Created an attachment (id=21085)
--> (http://issues.apache.org/bugzilla/attachment.cgi?id=21085&action=view)
against trunk
I left IA64 and x86_64 apr_atomic_casptr and apr_atomic_xchgptr untouched
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