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2116. [bug] 'rndc reload' could cause the cache to continually

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be cleaned. [RT #16401]
This commit is contained in:
Mark Andrews
2006-12-07 06:27:34 +00:00
parent 13290782cb
commit e60f01cdd2
2 changed files with 18 additions and 1 deletions
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3
CHANGES
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@@ -1,3 +1,6 @@
2116. [bug] 'rndc reload' could cause the cache to continually
be cleaned. [RT #16401]
2115. [bug] 'rndc reconfig' could trigger a INSIST if the
number of masters for a zone was reduced. [RT #16444]

16
lib/isc/mem.c
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@@ -15,7 +15,7 @@
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: mem.c,v 1.126 2006/01/04 23:50:24 marka Exp $ */
/* $Id: mem.c,v 1.127 2006/12/07 06:27:34 marka Exp $ */
/*! \file */
@@ -1462,17 +1462,28 @@ void
isc_mem_setwater(isc_mem_t *ctx, isc_mem_water_t water, void *water_arg,
size_t hiwater, size_t lowater)
{
isc_boolean_t callwater = ISC_FALSE;
isc_mem_water_t oldwater;
void *oldwater_arg;
REQUIRE(VALID_CONTEXT(ctx));
REQUIRE(hiwater >= lowater);
MCTXLOCK(ctx, &ctx->lock);
oldwater = ctx->water;
oldwater_arg = ctx->water_arg;
if (water == NULL) {
callwater = ctx->hi_called;
ctx->water = NULL;
ctx->water_arg = NULL;
ctx->hi_water = 0;
ctx->lo_water = 0;
ctx->hi_called = ISC_FALSE;
} else {
if (ctx->hi_called &&
(ctx->water != water || ctx->water_arg != water_arg ||
ctx->inuse < lowater || lowater == 0))
callwater = ISC_TRUE;
ctx->water = water;
ctx->water_arg = water_arg;
ctx->hi_water = hiwater;
@@ -1480,6 +1491,9 @@ isc_mem_setwater(isc_mem_t *ctx, isc_mem_water_t water, void *water_arg,
ctx->hi_called = ISC_FALSE;
}
MCTXUNLOCK(ctx, &ctx->lock);
if (callwater && oldwater != NULL)
(oldwater)(oldwater_arg, ISC_MEM_LOWATER);
}
/*