mirror of
https://gitlab.isc.org/isc-projects/bind9
synced 2025-08-22 10:10:06 +00:00
f7e5c1db38
This required couple of internal changes to the isc_mem_debugging. The isc_mem_debugging is now internal to isc_mem unit and there are three new functions: 1. isc_mem_setdebugging() can change the debugging setting for an individual memory context. This is need for the memory contexts used for OpenSSL, libxml and libuv accounting as recording and tracing memory is broken there. 2. isc_mem_debugon() / isc_mem_debugoff() can be used to change default memory debugging flags as well as debugging flags for isc_g_mctx. Additionally, the memory debugging is inconsistent across the code-base. For now, we are keeping the existing flags, but three new environment variables have been added 'ISC_MEM_DEBUGRECORD', 'ISC_MEM_DEBUGTRACE' and 'ISC_MEM_DEBUGUSAGE' to set the global debugging flags at any program using the memory contexts.
86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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*
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* SPDX-License-Identifier: MPL-2.0
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, you can obtain one at https://mozilla.org/MPL/2.0/.
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*
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* See the COPYRIGHT file distributed with this work for additional
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* information regarding copyright ownership.
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*/
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#include <isc/mem.h>
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#include <isc/util.h>
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#include <isc/xml.h>
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#ifdef HAVE_LIBXML2
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#include <libxml/parser.h>
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#include <libxml/xmlversion.h>
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#ifndef LIBXML_HAS_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS
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static isc_mem_t *isc__xml_mctx = NULL;
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static void *
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isc__xml_malloc(size_t size) {
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return isc_mem_allocate(isc__xml_mctx, size);
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}
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static void *
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isc__xml_realloc(void *ptr, size_t size) {
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return isc_mem_reallocate(isc__xml_mctx, ptr, size);
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}
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static char *
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isc__xml_strdup(const char *str) {
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return isc_mem_strdup(isc__xml_mctx, str);
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}
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static void
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isc__xml_free(void *ptr) {
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if (ptr == NULL) {
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return;
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}
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isc_mem_free(isc__xml_mctx, ptr);
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}
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#endif /* !LIBXML_HAS_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS) */
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#endif /* HAVE_LIBXML2 */
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void
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isc__xml_initialize(void) {
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#ifdef HAVE_LIBXML2
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#ifndef LIBXML_HAS_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS
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isc_mem_create("libxml2", &isc__xml_mctx);
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isc_mem_setdebugging(isc__xml_mctx, 0);
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isc_mem_setdestroycheck(isc__xml_mctx, false);
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RUNTIME_CHECK(xmlMemSetup(isc__xml_free, isc__xml_malloc,
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isc__xml_realloc, isc__xml_strdup) == 0);
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#endif /* !LIBXML_HAS_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS */
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xmlInitParser();
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#endif /* HAVE_LIBXML2 */
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}
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void
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isc__xml_shutdown(void) {
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#ifdef HAVE_LIBXML2
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xmlCleanupParser();
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#ifndef LIBXML_HAS_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS
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isc_mem_detach(&isc__xml_mctx);
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#endif /* !LIBXML_HAS_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS */
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#endif /* HAVE_LIBXML2 */
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}
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void
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isc__xml_setdestroycheck(bool check ISC_ATTR_UNUSED) {
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#ifdef HAVE_LIBXML2
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#ifndef LIBXML_HAS_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS
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isc_mem_setdestroycheck(isc__xml_mctx, check);
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#endif /* LIBXML_HAS_DEPRECATED_MEMORY_ALLOCATION_FUNCTIONS */
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#endif /* HAVE_LIBXML2 */
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}
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