diff options
Diffstat (limited to 'contrib/bind9/lib/isc/mem.c')
| -rw-r--r-- | contrib/bind9/lib/isc/mem.c | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/contrib/bind9/lib/isc/mem.c b/contrib/bind9/lib/isc/mem.c index 9c37d7478bdb..59f59241b84d 100644 --- a/contrib/bind9/lib/isc/mem.c +++ b/contrib/bind9/lib/isc/mem.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2004-2009 Internet Systems Consortium, Inc. ("ISC") + * Copyright (C) 2004-2010 Internet Systems Consortium, Inc. ("ISC") * Copyright (C) 1997-2003 Internet Software Consortium. * * Permission to use, copy, modify, and/or distribute this software for any @@ -15,7 +15,7 @@ * PERFORMANCE OF THIS SOFTWARE. */ -/* $Id: mem.c,v 1.145.120.4 2009/02/16 03:17:05 marka Exp $ */ +/* $Id: mem.c,v 1.145.120.4.24.2 2010/08/12 23:46:25 tbox Exp $ */ /*! \file */ @@ -141,6 +141,7 @@ struct isc_mem { size_t hi_water; size_t lo_water; isc_boolean_t hi_called; + isc_boolean_t is_overmem; isc_mem_water_t water; void * water_arg; ISC_LIST(isc_mempool_t) pools; @@ -764,6 +765,7 @@ isc_mem_createx2(size_t init_max_size, size_t target_size, ctx->hi_water = 0; ctx->lo_water = 0; ctx->hi_called = ISC_FALSE; + ctx->is_overmem = ISC_FALSE; ctx->water = NULL; ctx->water_arg = NULL; ctx->magic = MEM_MAGIC; @@ -1102,6 +1104,10 @@ isc__mem_get(isc_mem_t *ctx, size_t size FLARG) { } ADD_TRACE(ctx, ptr, size, file, line); + if (ctx->hi_water != 0U && ctx->inuse > ctx->hi_water && + !ctx->is_overmem) { + ctx->is_overmem = ISC_TRUE; + } if (ctx->hi_water != 0U && !ctx->hi_called && ctx->inuse > ctx->hi_water) { call_water = ISC_TRUE; @@ -1159,6 +1165,10 @@ isc__mem_put(isc_mem_t *ctx, void *ptr, size_t size FLARG) * when the context was pushed over hi_water but then had * isc_mem_setwater() called with 0 for hi_water and lo_water. */ + if (ctx->is_overmem && + (ctx->inuse < ctx->lo_water || ctx->lo_water == 0U)) { + ctx->is_overmem = ISC_FALSE; + } if (ctx->hi_called && (ctx->inuse < ctx->lo_water || ctx->lo_water == 0U)) { if (ctx->water != NULL) @@ -1345,6 +1355,11 @@ isc__mem_allocate(isc_mem_t *ctx, size_t size FLARG) { #if ISC_MEM_TRACKLINES ADD_TRACE(ctx, si, si[-1].u.size, file, line); #endif + if (ctx->hi_water != 0U && ctx->inuse > ctx->hi_water && + !ctx->is_overmem) { + ctx->is_overmem = ISC_TRUE; + } + if (ctx->hi_water != 0U && !ctx->hi_called && ctx->inuse > ctx->hi_water) { ctx->hi_called = ISC_TRUE; @@ -1433,6 +1448,11 @@ isc__mem_free(isc_mem_t *ctx, void *ptr FLARG) { * when the context was pushed over hi_water but then had * isc_mem_setwater() called with 0 for hi_water and lo_water. */ + if (ctx->is_overmem && + (ctx->inuse < ctx->lo_water || ctx->lo_water == 0U)) { + ctx->is_overmem = ISC_FALSE; + } + if (ctx->hi_called && (ctx->inuse < ctx->lo_water || ctx->lo_water == 0U)) { ctx->hi_called = ISC_FALSE; @@ -1559,6 +1579,18 @@ isc_mem_setwater(isc_mem_t *ctx, isc_mem_water_t water, void *water_arg, (oldwater)(oldwater_arg, ISC_MEM_LOWATER); } +isc_boolean_t +isc_mem_isovermem(isc_mem_t *ctx) { + REQUIRE(VALID_CONTEXT(ctx)); + + /* + * We don't bother to lock the context because 100% accuracy isn't + * necessary (and even if we locked the context the returned value + * could be different from the actual state when it's used anyway) + */ + return (ctx->is_overmem); +} + void isc_mem_setname(isc_mem_t *ctx, const char *name, void *tag) { REQUIRE(VALID_CONTEXT(ctx)); |