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Rename CACHE_LINE_SIZE to PG_CACHE_LINE_SIZE.
As noted in http://bugs.debian.org/763098 there is a conflict between
postgres' definition of CACHE_LINE_SIZE and the definition by various
*bsd platforms. It's debatable who has the right to define such a
name, but postgres' use was only introduced in 375d8526f2
(9.4), so
it seems like a good idea to rename it.
Discussion: 20140930195756.GC27407@msg.df7cb.de
Per complaint of Christoph Berg in the above email, although he's not
the original bug reporter.
Backpatch to 9.4 where the define was introduced.
This commit is contained in:
@ -409,7 +409,7 @@ typedef struct
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typedef union WALInsertLockPadded
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{
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WALInsertLock l;
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char pad[CACHE_LINE_SIZE];
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char pad[PG_CACHE_LINE_SIZE];
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} WALInsertLockPadded;
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/*
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@ -436,7 +436,7 @@ typedef struct XLogCtlInsert
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* read on every WAL insertion, but updated rarely, and we don't want
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* those reads to steal the cache line containing Curr/PrevBytePos.
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*/
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char pad[CACHE_LINE_SIZE];
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char pad[PG_CACHE_LINE_SIZE];
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/*
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* fullPageWrites is the master copy used by all backends to determine
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