From: | Oskari Saarenmaa <os(at)ohmu(dot)fi> |
---|---|
To: | Andres Freund <andres(at)2ndquadrant(dot)com>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Inefficient barriers on solaris with sun cc |
Date: | 2014-09-26 12:36:02 |
Message-ID: | 54255DB2.6070106@ohmu.fi |
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Lists: | pgsql-hackers |
25.09.2014, 16:34, Andres Freund kirjoitti:
> Binaries compiled on solaris using sun studio cc currently don't have
> compiler and memory barriers implemented. That means we fall back to
> relatively slow generic implementations for those. Especially compiler,
> read, write barriers will be much slower than necessary (since they all
> just need to prevent compiler reordering as both sparc and x86 are run
> in TSO mode under solaris).
Attached patch implements compiler and memory barriers for Solaris
Studio based on documentation at
http://docs.oracle.com/cd/E18659_01/html/821-1383/gjzmf.html
I defined read and write barriers as acquire and release barriers
instead of pure read and write ones as that's what other platforms
appear to do.
/ Oskari
Attachment | Content-Type | Size |
---|---|---|
0001-atomics-add-compiler-and-memory-barriers-for-solaris.patch | text/x-patch | 3.7 KB |
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