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Improve API of GenericXLogRegister().

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Rename this function to GenericXLogRegisterBuffer() to make it clearer
what it does, and leave room for other sorts of "register" actions in
future.  Also, replace its "bool isNew" argument with an integer flags
argument, so as to allow adding more flags in future without an API
break.

Alexander Korotkov, adjusted slightly by me
This commit is contained in:
Tom Lane
2016-04-12 11:42:06 -04:00
parent bdf7db8192
commit 5713f03973
6 changed files with 41 additions and 31 deletions
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9
contrib/bloom/blutils.c
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@ -39,7 +39,7 @@ PG_FUNCTION_INFO_V1(blhandler);
/* Kind of relation optioms for bloom index */
static relopt_kind bl_relopt_kind;
static int32 myRand();
static int32 myRand(void);
static void mySrand(uint32 seed);
/*
@ -173,15 +173,16 @@ initBloomState(BloomState *state, Relation index)
static int32 next;
static int32
myRand()
myRand(void)
{
/*
/*----------
* Compute x = (7^5 * x) mod (2^31 - 1)
* without overflowing 31 bits:
* (2^31 - 1) = 127773 * (7^5) + 2836
* From "Random number generators: good ones are hard to find",
* Park and Miller, Communications of the ACM, vol. 31, no. 10,
* October 1988, p. 1195.
*----------
*/
int32 hi, lo, x;
@ -418,7 +419,7 @@ BloomInitMetapage(Relation index)
/* Initialize contents of meta page */
state = GenericXLogStart(index);
metaPage = GenericXLogRegister(state, metaBuffer, true);
metaPage = GenericXLogRegisterBuffer(state, metaBuffer, GENERIC_XLOG_FULL_IMAGE);
BloomInitPage(metaPage, BLOOM_META);
metadata = BloomPageGetMeta(metaPage);