2003-04-28 19:58:43 +00:00
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/*
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2005-09-14 20:46:50 +00:00
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* Asterisk -- An open source telephony toolkit.
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2003-04-28 19:58:43 +00:00
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*
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2012-11-08 17:38:31 +00:00
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* Copyright (C) 1999 - 2012, Digium, Inc.
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2003-04-28 19:58:43 +00:00
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*
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2005-03-23 05:56:32 +00:00
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* Mark Spencer <markster@digium.com>
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2003-04-28 19:58:43 +00:00
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*
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2005-09-14 20:46:50 +00:00
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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2003-04-28 19:58:43 +00:00
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* This program is free software, distributed under the terms of
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2005-09-14 20:46:50 +00:00
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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2005-10-24 20:12:06 +00:00
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/*! \file
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2005-09-14 20:46:50 +00:00
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*
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2005-10-24 20:12:06 +00:00
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* \brief Memory Management
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2005-12-30 21:18:06 +00:00
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*
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* \author Mark Spencer <markster@digium.com>
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2012-11-08 17:38:31 +00:00
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* \author Richard Mudgett <rmudgett@digium.com>
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2003-04-28 19:58:43 +00:00
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*/
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2012-06-15 16:20:16 +00:00
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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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2005-06-06 20:27:51 +00:00
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#include "asterisk.h"
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2012-11-08 17:38:31 +00:00
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#if defined(__AST_DEBUG_MALLOC)
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2008-09-27 15:52:56 +00:00
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2005-06-06 23:12:05 +00:00
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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2005-06-06 20:27:51 +00:00
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2007-11-21 01:35:30 +00:00
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#include "asterisk/paths.h" /* use ast_config_AST_LOG_DIR */
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2008-07-11 14:16:15 +00:00
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#include <stddef.h>
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2006-06-07 18:54:56 +00:00
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#include <time.h>
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2005-04-21 06:02:45 +00:00
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#include "asterisk/cli.h"
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#include "asterisk/lock.h"
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2005-08-23 15:08:55 +00:00
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#include "asterisk/strings.h"
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2006-03-20 02:00:30 +00:00
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#include "asterisk/unaligned.h"
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2003-04-28 19:58:43 +00:00
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#define SOME_PRIME 563
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2006-02-15 01:48:54 +00:00
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enum func_type {
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FUNC_CALLOC = 1,
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FUNC_MALLOC,
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FUNC_REALLOC,
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FUNC_STRDUP,
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FUNC_STRNDUP,
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FUNC_VASPRINTF,
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FUNC_ASPRINTF
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};
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2003-04-28 19:58:43 +00:00
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/* Undefine all our macros */
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#undef malloc
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#undef calloc
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#undef realloc
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#undef strdup
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#undef strndup
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#undef free
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2004-01-14 06:35:01 +00:00
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#undef vasprintf
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2006-01-04 21:54:09 +00:00
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#undef asprintf
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2003-04-28 19:58:43 +00:00
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2012-11-08 17:38:31 +00:00
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#define FENCE_MAGIC 0xdeadbeef /*!< Allocated memory high/low fence overwrite check. */
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#define FREED_MAGIC 0xdeaddead /*!< Freed memory wipe filler. */
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#define MALLOC_FILLER 0x55 /*!< Malloced memory filler. Must not be zero. */
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2005-09-29 04:34:11 +00:00
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2003-05-06 00:01:32 +00:00
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static FILE *mmlog;
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2012-11-08 17:38:31 +00:00
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struct ast_region {
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2003-04-28 19:58:43 +00:00
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struct ast_region *next;
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2008-07-11 14:16:15 +00:00
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size_t len;
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2012-11-08 17:38:31 +00:00
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unsigned int cache; /* region was allocated as part of a cache pool */
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2006-08-21 19:18:09 +00:00
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unsigned int lineno;
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2006-02-15 01:48:54 +00:00
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enum func_type which;
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2012-11-08 17:38:31 +00:00
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char file[64];
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char func[40];
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/*!
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* \brief Lower guard fence.
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*
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* \note Must be right before data[].
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*
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* \note Padding between fence and data[] is irrelevent because
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* data[] is used to fill in the lower fence check value and not
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* the fence member. The fence member is to ensure that there
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* is space reserved for the fence check value.
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*/
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2005-09-29 04:34:11 +00:00
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unsigned int fence;
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2012-11-08 17:38:31 +00:00
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/*!
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* \brief Location of the requested malloc block to return.
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*
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* \note Must have the same alignment that malloc returns.
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* i.e., It is suitably aligned for any kind of varible.
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*/
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unsigned char data[0] __attribute__((aligned));
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};
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/*! Hash table of lists of active allocated memory regions. */
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static struct ast_region *regions[SOME_PRIME];
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/*! Number of freed regions to keep around to delay actually freeing them. */
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#define FREED_MAX_COUNT 1500
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2003-04-28 19:58:43 +00:00
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2012-11-08 17:38:31 +00:00
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/*! Maximum size of a minnow block */
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#define MINNOWS_MAX_SIZE 50
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struct ast_freed_regions {
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/*! Memory regions that have been freed. */
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struct ast_region *regions[FREED_MAX_COUNT];
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/*! Next index into freed regions[] to use. */
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int index;
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};
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/*! Large memory blocks that have been freed. */
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static struct ast_freed_regions whales;
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/*! Small memory blocks that have been freed. */
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static struct ast_freed_regions minnows;
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#define HASH(a) (((unsigned long)(a)) % ARRAY_LEN(regions))
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2007-08-03 19:41:42 +00:00
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/*! Tracking this mutex will cause infinite recursion, as the mutex tracking
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* code allocates memory */
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AST_MUTEX_DEFINE_STATIC_NOTRACKING(reglock);
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2003-04-28 19:58:43 +00:00
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2006-08-21 19:18:09 +00:00
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#define astmm_log(...) \
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do { \
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fprintf(stderr, __VA_ARGS__); \
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if (mmlog) { \
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fprintf(mmlog, __VA_ARGS__); \
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fflush(mmlog); \
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} \
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} while (0)
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2012-11-08 17:38:31 +00:00
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/*!
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* \internal
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*
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* \note If DO_CRASH is not defined then the function returns.
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*
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* \return Nothing
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*/
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static void my_do_crash(void)
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{
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/*
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* Give the logger a chance to get the message out, just in case
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* we abort(), or Asterisk crashes due to whatever problem just
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* happened.
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*/
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usleep(1);
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ast_do_crash();
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}
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static void *__ast_alloc_region(size_t size, const enum func_type which, const char *file, int lineno, const char *func, unsigned int cache)
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2003-04-28 19:58:43 +00:00
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{
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struct ast_region *reg;
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2005-09-29 04:34:11 +00:00
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unsigned int *fence;
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2003-04-28 19:58:43 +00:00
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int hash;
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2006-08-21 19:18:09 +00:00
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if (!(reg = malloc(size + sizeof(*reg) + sizeof(*fence)))) {
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2012-11-08 17:38:31 +00:00
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astmm_log("Memory Allocation Failure - '%d' bytes at %s %s() line %d\n",
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(int) size, file, func, lineno);
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2008-11-19 00:59:48 +00:00
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return NULL;
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2003-04-28 19:58:43 +00:00
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}
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2006-08-21 19:18:09 +00:00
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reg->len = size;
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2006-12-27 18:33:44 +00:00
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reg->cache = cache;
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2012-11-08 17:38:31 +00:00
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reg->lineno = lineno;
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reg->which = which;
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ast_copy_string(reg->file, file, sizeof(reg->file));
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ast_copy_string(reg->func, func, sizeof(reg->func));
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/*
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* Init lower fence.
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*
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* We use the bytes just preceeding reg->data and not reg->fence
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* because there is likely to be padding between reg->fence and
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* reg->data for reg->data alignment.
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*/
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fence = (unsigned int *) (reg->data - sizeof(*fence));
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*fence = FENCE_MAGIC;
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/* Init higher fence. */
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fence = (unsigned int *) (reg->data + reg->len);
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2006-08-21 19:18:09 +00:00
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put_unaligned_uint32(fence, FENCE_MAGIC);
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2012-11-08 17:38:31 +00:00
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hash = HASH(reg->data);
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2006-08-21 19:18:09 +00:00
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ast_mutex_lock(®lock);
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reg->next = regions[hash];
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regions[hash] = reg;
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2003-08-13 15:25:16 +00:00
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ast_mutex_unlock(®lock);
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2006-08-21 19:18:09 +00:00
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2012-11-08 17:38:31 +00:00
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return reg->data;
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2003-04-28 19:58:43 +00:00
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}
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2012-11-08 17:38:31 +00:00
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/*!
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* \internal
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* \brief Wipe the region payload data with a known value.
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*
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* \param reg Region block to be wiped.
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*
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* \return Nothing
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*/
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static void region_data_wipe(struct ast_region *reg)
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2003-04-28 19:58:43 +00:00
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{
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2012-11-08 17:38:31 +00:00
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void *end;
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unsigned int *pos;
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/*
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* Wipe the lower fence, the payload, and whatever amount of the
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* higher fence that falls into alignment with the payload.
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*/
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end = reg->data + reg->len;
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for (pos = ®->fence; (void *) pos <= end; ++pos) {
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*pos = FREED_MAGIC;
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}
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}
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2012-03-22 19:51:16 +00:00
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2012-11-08 17:38:31 +00:00
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/*!
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* \internal
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* \brief Check the region payload data for memory corruption.
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*
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* \param reg Region block to be checked.
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*
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* \return Nothing
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*/
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static void region_data_check(struct ast_region *reg)
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{
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void *end;
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unsigned int *pos;
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/*
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* Check the lower fence, the payload, and whatever amount of
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* the higher fence that falls into alignment with the payload.
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*/
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end = reg->data + reg->len;
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for (pos = ®->fence; (void *) pos <= end; ++pos) {
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if (*pos != FREED_MAGIC) {
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astmm_log("WARNING: Memory corrupted after free of %p allocated at %s %s() line %d\n",
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reg->data, reg->file, reg->func, reg->lineno);
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my_do_crash();
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2003-04-28 19:58:43 +00:00
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break;
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}
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}
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2012-11-08 17:38:31 +00:00
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}
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/*!
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* \internal
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* \brief Flush the circular array of freed regions.
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*
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* \param freed Already freed region blocks storage.
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*
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* \return Nothing
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*/
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static void freed_regions_flush(struct ast_freed_regions *freed)
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{
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int idx;
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struct ast_region *old;
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ast_mutex_lock(®lock);
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for (idx = 0; idx < ARRAY_LEN(freed->regions); ++idx) {
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old = freed->regions[idx];
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freed->regions[idx] = NULL;
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if (old) {
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region_data_check(old);
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free(old);
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}
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}
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freed->index = 0;
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2003-08-13 15:25:16 +00:00
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ast_mutex_unlock(®lock);
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2012-11-08 17:38:31 +00:00
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}
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/*!
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* \internal
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* \brief Delay freeing a region block.
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*
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* \param freed Already freed region blocks storage.
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* \param reg Region block to be freed.
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*
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* \return Nothing
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*/
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static void region_free(struct ast_freed_regions *freed, struct ast_region *reg)
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{
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struct ast_region *old;
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2006-08-21 19:18:09 +00:00
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2012-11-08 17:38:31 +00:00
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region_data_wipe(reg);
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ast_mutex_lock(®lock);
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old = freed->regions[freed->index];
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freed->regions[freed->index] = reg;
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++freed->index;
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if (ARRAY_LEN(freed->regions) <= freed->index) {
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freed->index = 0;
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}
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ast_mutex_unlock(®lock);
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if (old) {
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region_data_check(old);
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free(old);
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}
|
2003-04-28 19:58:43 +00:00
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}
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2012-11-08 17:38:31 +00:00
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/*!
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* \internal
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* \brief Remove a region from the active regions.
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*
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* \param ptr Region payload data pointer.
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*
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* \retval region on success.
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* \retval NULL if not found.
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*/
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static struct ast_region *region_remove(void *ptr)
|
2003-04-28 19:58:43 +00:00
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{
|
2008-09-17 20:25:40 +00:00
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int hash;
|
2012-11-08 17:38:31 +00:00
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struct ast_region *reg;
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struct ast_region *prev = NULL;
|
2008-09-17 20:25:40 +00:00
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hash = HASH(ptr);
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|
2003-08-13 15:25:16 +00:00
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ast_mutex_lock(®lock);
|
2006-08-21 19:18:09 +00:00
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for (reg = regions[hash]; reg; reg = reg->next) {
|
2003-04-28 19:58:43 +00:00
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|
if (reg->data == ptr) {
|
2012-11-08 17:38:31 +00:00
|
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|
if (prev) {
|
2003-04-28 19:58:43 +00:00
|
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|
prev->next = reg->next;
|
2012-11-08 17:38:31 +00:00
|
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|
} else {
|
2003-04-28 19:58:43 +00:00
|
|
|
regions[hash] = reg->next;
|
2012-11-08 17:38:31 +00:00
|
|
|
}
|
2003-04-28 19:58:43 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
prev = reg;
|
|
|
|
}
|
2003-08-13 15:25:16 +00:00
|
|
|
ast_mutex_unlock(®lock);
|
2006-08-21 19:18:09 +00:00
|
|
|
|
2012-11-08 17:38:31 +00:00
|
|
|
return reg;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*!
|
|
|
|
* \internal
|
|
|
|
* \brief Check the fences of a region.
|
|
|
|
*
|
|
|
|
* \param reg Region block to check.
|
|
|
|
*
|
|
|
|
* \return Nothing
|
|
|
|
*/
|
|
|
|
static void region_check_fences(struct ast_region *reg)
|
|
|
|
{
|
|
|
|
unsigned int *fence;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We use the bytes just preceeding reg->data and not reg->fence
|
|
|
|
* because there is likely to be padding between reg->fence and
|
|
|
|
* reg->data for reg->data alignment.
|
|
|
|
*/
|
|
|
|
fence = (unsigned int *) (reg->data - sizeof(*fence));
|
|
|
|
if (*fence != FENCE_MAGIC) {
|
|
|
|
astmm_log("WARNING: Low fence violation of %p allocated at %s %s() line %d\n",
|
|
|
|
reg->data, reg->file, reg->func, reg->lineno);
|
|
|
|
my_do_crash();
|
|
|
|
}
|
|
|
|
fence = (unsigned int *) (reg->data + reg->len);
|
|
|
|
if (get_unaligned_uint32(fence) != FENCE_MAGIC) {
|
|
|
|
astmm_log("WARNING: High fence violation of %p allocated at %s %s() line %d\n",
|
|
|
|
reg->data, reg->file, reg->func, reg->lineno);
|
|
|
|
my_do_crash();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __ast_free_region(void *ptr, const char *file, int lineno, const char *func)
|
|
|
|
{
|
|
|
|
struct ast_region *reg;
|
|
|
|
|
|
|
|
if (!ptr) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
reg = region_remove(ptr);
|
2003-04-28 19:58:43 +00:00
|
|
|
if (reg) {
|
2012-11-08 17:38:31 +00:00
|
|
|
region_check_fences(reg);
|
|
|
|
|
|
|
|
if (reg->len <= MINNOWS_MAX_SIZE) {
|
|
|
|
region_free(&minnows, reg);
|
|
|
|
} else {
|
|
|
|
region_free(&whales, reg);
|
2005-09-29 04:34:11 +00:00
|
|
|
}
|
2003-05-06 00:01:32 +00:00
|
|
|
} else {
|
2012-11-08 17:38:31 +00:00
|
|
|
/*
|
|
|
|
* This memory region is not registered. It could be because of
|
|
|
|
* a double free or the memory block was not allocated by the
|
|
|
|
* malloc debug code.
|
|
|
|
*/
|
|
|
|
astmm_log("WARNING: Freeing unregistered memory %p by %s %s() line %d\n",
|
|
|
|
ptr, file, func, lineno);
|
|
|
|
my_do_crash();
|
2003-05-06 00:01:32 +00:00
|
|
|
}
|
2003-04-28 19:58:43 +00:00
|
|
|
}
|
|
|
|
|
2012-03-22 19:51:16 +00:00
|
|
|
void *__ast_calloc(size_t nmemb, size_t size, const char *file, int lineno, const char *func)
|
2003-04-28 19:58:43 +00:00
|
|
|
{
|
|
|
|
void *ptr;
|
2006-08-21 19:18:09 +00:00
|
|
|
|
2012-11-08 17:38:31 +00:00
|
|
|
ptr = __ast_alloc_region(size * nmemb, FUNC_CALLOC, file, lineno, func, 0);
|
|
|
|
if (ptr) {
|
2006-12-27 18:33:44 +00:00
|
|
|
memset(ptr, 0, size * nmemb);
|
2012-11-08 17:38:31 +00:00
|
|
|
}
|
2006-12-27 18:33:44 +00:00
|
|
|
|
|
|
|
return ptr;
|
|
|
|
}
|
|
|
|
|
2012-03-22 19:51:16 +00:00
|
|
|
void *__ast_calloc_cache(size_t nmemb, size_t size, const char *file, int lineno, const char *func)
|
2006-12-27 18:33:44 +00:00
|
|
|
{
|
|
|
|
void *ptr;
|
|
|
|
|
2012-11-08 17:38:31 +00:00
|
|
|
ptr = __ast_alloc_region(size * nmemb, FUNC_CALLOC, file, lineno, func, 1);
|
|
|
|
if (ptr) {
|
2003-04-28 19:58:43 +00:00
|
|
|
memset(ptr, 0, size * nmemb);
|
2012-11-08 17:38:31 +00:00
|
|
|
}
|
2006-08-21 19:18:09 +00:00
|
|
|
|
2003-04-28 19:58:43 +00:00
|
|
|
return ptr;
|
|
|
|
}
|
|
|
|
|
2012-03-22 19:51:16 +00:00
|
|
|
void *__ast_malloc(size_t size, const char *file, int lineno, const char *func)
|
2003-04-28 19:58:43 +00:00
|
|
|
{
|
2012-11-08 17:38:31 +00:00
|
|
|
void *ptr;
|
|
|
|
|
|
|
|
ptr = __ast_alloc_region(size, FUNC_MALLOC, file, lineno, func, 0);
|
|
|
|
if (ptr) {
|
|
|
|
/* Make sure that the malloced memory is not zero. */
|
|
|
|
memset(ptr, MALLOC_FILLER, size);
|
|
|
|
}
|
|
|
|
|
|
|
|
return ptr;
|
2003-04-28 19:58:43 +00:00
|
|
|
}
|
|
|
|
|
2012-03-22 19:51:16 +00:00
|
|
|
void __ast_free(void *ptr, const char *file, int lineno, const char *func)
|
2003-04-28 19:58:43 +00:00
|
|
|
{
|
|
|
|
__ast_free_region(ptr, file, lineno, func);
|
|
|
|
}
|
|
|
|
|
2012-11-08 17:38:31 +00:00
|
|
|
/*!
|
|
|
|
* \note reglock must be locked before calling.
|
|
|
|
*/
|
|
|
|
static struct ast_region *region_find(void *ptr)
|
2003-04-28 19:58:43 +00:00
|
|
|
{
|
2012-11-08 17:38:31 +00:00
|
|
|
int hash;
|
|
|
|
struct ast_region *reg;
|
2006-08-21 19:18:09 +00:00
|
|
|
|
2012-11-08 17:38:31 +00:00
|
|
|
hash = HASH(ptr);
|
|
|
|
for (reg = regions[hash]; reg; reg = reg->next) {
|
|
|
|
if (reg->data == ptr) {
|
|
|
|
break;
|
|
|
|
}
|
2003-04-28 19:58:43 +00:00
|
|
|
}
|
2006-08-21 19:18:09 +00:00
|
|
|
|
2012-11-08 17:38:31 +00:00
|
|
|
return reg;
|
|
|
|
}
|
|
|
|
|
|
|
|
void *__ast_realloc(void *ptr, size_t size, const char *file, int lineno, const char *func)
|
|
|
|
{
|
|
|
|
size_t len;
|
|
|
|
struct ast_region *found;
|
|
|
|
void *new_mem;
|
2006-08-21 19:18:09 +00:00
|
|
|
|
|
|
|
if (ptr) {
|
2012-11-08 17:38:31 +00:00
|
|
|
ast_mutex_lock(®lock);
|
|
|
|
found = region_find(ptr);
|
|
|
|
if (!found) {
|
|
|
|
ast_mutex_unlock(®lock);
|
|
|
|
astmm_log("WARNING: Realloc of unregistered memory %p by %s %s() line %d\n",
|
|
|
|
ptr, file, func, lineno);
|
|
|
|
my_do_crash();
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
len = found->len;
|
|
|
|
ast_mutex_unlock(®lock);
|
|
|
|
} else {
|
|
|
|
found = NULL;
|
|
|
|
len = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!size) {
|
2006-08-21 19:18:09 +00:00
|
|
|
__ast_free_region(ptr, file, lineno, func);
|
2012-11-08 17:38:31 +00:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
new_mem = __ast_alloc_region(size, FUNC_REALLOC, file, lineno, func, 0);
|
|
|
|
if (new_mem) {
|
|
|
|
if (found) {
|
|
|
|
/* Copy the old data to the new malloced memory. */
|
|
|
|
if (size <= len) {
|
|
|
|
memcpy(new_mem, ptr, size);
|
|
|
|
} else {
|
|
|
|
memcpy(new_mem, ptr, len);
|
|
|
|
/* Make sure that the added memory is not zero. */
|
|
|
|
memset(new_mem + len, MALLOC_FILLER, size - len);
|
|
|
|
}
|
|
|
|
__ast_free_region(ptr, file, lineno, func);
|
|
|
|
} else {
|
|
|
|
/* Make sure that the malloced memory is not zero. */
|
|
|
|
memset(new_mem, MALLOC_FILLER, size);
|
|
|
|
}
|
2003-04-28 19:58:43 +00:00
|
|
|
}
|
2012-03-22 19:51:16 +00:00
|
|
|
|
2012-11-08 17:38:31 +00:00
|
|
|
return new_mem;
|
2003-04-28 19:58:43 +00:00
|
|
|
}
|
|
|
|
|
2012-03-22 19:51:16 +00:00
|
|
|
char *__ast_strdup(const char *s, const char *file, int lineno, const char *func)
|
2003-04-28 19:58:43 +00:00
|
|
|
{
|
|
|
|
size_t len;
|
|
|
|
void *ptr;
|
2006-08-21 19:18:09 +00:00
|
|
|
|
2003-04-28 19:58:43 +00:00
|
|
|
if (!s)
|
|
|
|
return NULL;
|
2006-08-21 19:18:09 +00:00
|
|
|
|
2003-04-28 19:58:43 +00:00
|
|
|
len = strlen(s) + 1;
|
2006-12-27 18:33:44 +00:00
|
|
|
if ((ptr = __ast_alloc_region(len, FUNC_STRDUP, file, lineno, func, 0)))
|
2003-04-28 19:58:43 +00:00
|
|
|
strcpy(ptr, s);
|
2006-08-21 19:18:09 +00:00
|
|
|
|
2003-04-28 19:58:43 +00:00
|
|
|
return ptr;
|
|
|
|
}
|
|
|
|
|
2012-03-22 19:51:16 +00:00
|
|
|
char *__ast_strndup(const char *s, size_t n, const char *file, int lineno, const char *func)
|
2003-04-28 19:58:43 +00:00
|
|
|
{
|
|
|
|
size_t len;
|
2012-09-07 23:10:05 +00:00
|
|
|
char *ptr;
|
2006-08-21 19:18:09 +00:00
|
|
|
|
2012-09-07 23:10:05 +00:00
|
|
|
if (!s) {
|
2003-04-28 19:58:43 +00:00
|
|
|
return NULL;
|
2012-09-07 23:10:05 +00:00
|
|
|
}
|
2006-08-21 19:18:09 +00:00
|
|
|
|
2012-09-07 23:10:05 +00:00
|
|
|
len = strnlen(s, n);
|
|
|
|
if ((ptr = __ast_alloc_region(len + 1, FUNC_STRNDUP, file, lineno, func, 0))) {
|
|
|
|
memcpy(ptr, s, len);
|
|
|
|
ptr[len] = '\0';
|
|
|
|
}
|
2006-08-21 19:18:09 +00:00
|
|
|
|
2003-04-28 19:58:43 +00:00
|
|
|
return ptr;
|
|
|
|
}
|
|
|
|
|
2006-01-04 21:54:09 +00:00
|
|
|
int __ast_asprintf(const char *file, int lineno, const char *func, char **strp, const char *fmt, ...)
|
|
|
|
{
|
|
|
|
int size;
|
|
|
|
va_list ap, ap2;
|
|
|
|
char s;
|
|
|
|
|
|
|
|
*strp = NULL;
|
|
|
|
va_start(ap, fmt);
|
|
|
|
va_copy(ap2, ap);
|
|
|
|
size = vsnprintf(&s, 1, fmt, ap2);
|
|
|
|
va_end(ap2);
|
2006-12-27 18:33:44 +00:00
|
|
|
if (!(*strp = __ast_alloc_region(size + 1, FUNC_ASPRINTF, file, lineno, func, 0))) {
|
2006-01-04 21:54:09 +00:00
|
|
|
va_end(ap);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
vsnprintf(*strp, size + 1, fmt, ap);
|
|
|
|
va_end(ap);
|
|
|
|
|
|
|
|
return size;
|
|
|
|
}
|
|
|
|
|
2012-03-22 19:51:16 +00:00
|
|
|
int __ast_vasprintf(char **strp, const char *fmt, va_list ap, const char *file, int lineno, const char *func)
|
2004-01-14 06:35:01 +00:00
|
|
|
{
|
2005-11-16 02:20:16 +00:00
|
|
|
int size;
|
|
|
|
va_list ap2;
|
|
|
|
char s;
|
|
|
|
|
|
|
|
*strp = NULL;
|
|
|
|
va_copy(ap2, ap);
|
|
|
|
size = vsnprintf(&s, 1, fmt, ap2);
|
|
|
|
va_end(ap2);
|
2006-12-27 18:33:44 +00:00
|
|
|
if (!(*strp = __ast_alloc_region(size + 1, FUNC_VASPRINTF, file, lineno, func, 0))) {
|
2006-01-04 21:54:09 +00:00
|
|
|
va_end(ap);
|
2005-11-16 02:20:16 +00:00
|
|
|
return -1;
|
2006-01-04 21:54:09 +00:00
|
|
|
}
|
2005-11-16 02:20:16 +00:00
|
|
|
vsnprintf(*strp, size + 1, fmt, ap);
|
|
|
|
|
|
|
|
return size;
|
2004-01-14 06:35:01 +00:00
|
|
|
}
|
|
|
|
|
2007-09-20 23:14:30 +00:00
|
|
|
static char *handle_memory_show(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
|
2003-04-28 19:58:43 +00:00
|
|
|
{
|
2009-05-22 16:53:41 +00:00
|
|
|
const char *fn = NULL;
|
2003-04-28 19:58:43 +00:00
|
|
|
struct ast_region *reg;
|
2006-08-21 19:18:09 +00:00
|
|
|
unsigned int x;
|
2005-08-03 04:50:09 +00:00
|
|
|
unsigned int len = 0;
|
2006-12-27 18:33:44 +00:00
|
|
|
unsigned int cache_len = 0;
|
2006-08-21 19:18:09 +00:00
|
|
|
unsigned int count = 0;
|
|
|
|
|
2007-09-20 23:14:30 +00:00
|
|
|
switch (cmd) {
|
|
|
|
case CLI_INIT:
|
|
|
|
e->command = "memory show allocations";
|
|
|
|
e->usage =
|
2012-11-08 17:38:31 +00:00
|
|
|
"Usage: memory show allocations [<file>|anomolies]\n"
|
|
|
|
" Dumps a list of segments of allocated memory.\n"
|
|
|
|
" Defaults to listing all memory allocations.\n"
|
|
|
|
" <file> - Restricts output to memory allocated by the file.\n"
|
|
|
|
" anomolies - Only check for fence violations.\n";
|
2007-11-06 19:51:37 +00:00
|
|
|
return NULL;
|
2007-09-20 23:14:30 +00:00
|
|
|
case CLI_GENERATE:
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (a->argc > 3)
|
|
|
|
fn = a->argv[3];
|
2003-04-28 19:58:43 +00:00
|
|
|
|
2007-10-29 19:47:52 +00:00
|
|
|
ast_mutex_lock(®lock);
|
2012-11-08 17:38:31 +00:00
|
|
|
for (x = 0; x < ARRAY_LEN(regions); x++) {
|
2006-08-21 19:18:09 +00:00
|
|
|
for (reg = regions[x]; reg; reg = reg->next) {
|
2005-09-29 04:34:11 +00:00
|
|
|
if (!fn || !strcasecmp(fn, reg->file) || !strcasecmp(fn, "anomolies")) {
|
2012-11-08 17:38:31 +00:00
|
|
|
region_check_fences(reg);
|
2005-09-29 04:34:11 +00:00
|
|
|
}
|
2003-04-28 19:58:43 +00:00
|
|
|
if (!fn || !strcasecmp(fn, reg->file)) {
|
2012-03-22 19:51:16 +00:00
|
|
|
ast_cli(a->fd, "%10d bytes allocated%s in %20s at line %5d of %s\n",
|
|
|
|
(int) reg->len, reg->cache ? " (cache)" : "",
|
2006-12-27 18:33:44 +00:00
|
|
|
reg->func, reg->lineno, reg->file);
|
2003-04-28 19:58:43 +00:00
|
|
|
len += reg->len;
|
2006-12-27 18:33:44 +00:00
|
|
|
if (reg->cache)
|
|
|
|
cache_len += reg->len;
|
2003-04-28 19:58:43 +00:00
|
|
|
count++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2007-10-29 19:47:52 +00:00
|
|
|
ast_mutex_unlock(®lock);
|
2012-03-22 19:51:16 +00:00
|
|
|
|
2006-12-27 18:33:44 +00:00
|
|
|
if (cache_len)
|
2007-09-20 23:14:30 +00:00
|
|
|
ast_cli(a->fd, "%d bytes allocated (%d in caches) in %d allocations\n", len, cache_len, count);
|
2006-12-27 18:33:44 +00:00
|
|
|
else
|
2007-09-20 23:14:30 +00:00
|
|
|
ast_cli(a->fd, "%d bytes allocated in %d allocations\n", len, count);
|
2012-03-22 19:51:16 +00:00
|
|
|
|
2007-09-20 23:14:30 +00:00
|
|
|
return CLI_SUCCESS;
|
2003-04-28 19:58:43 +00:00
|
|
|
}
|
|
|
|
|
2007-09-20 23:14:30 +00:00
|
|
|
static char *handle_memory_show_summary(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
|
2003-04-28 19:58:43 +00:00
|
|
|
{
|
2009-05-22 16:53:41 +00:00
|
|
|
const char *fn = NULL;
|
2003-04-28 19:58:43 +00:00
|
|
|
int x;
|
|
|
|
struct ast_region *reg;
|
2005-08-03 04:50:09 +00:00
|
|
|
unsigned int len = 0;
|
2006-12-27 18:33:44 +00:00
|
|
|
unsigned int cache_len = 0;
|
2003-04-28 19:58:43 +00:00
|
|
|
int count = 0;
|
2006-08-21 19:18:09 +00:00
|
|
|
struct file_summary {
|
|
|
|
char fn[80];
|
|
|
|
int len;
|
2006-12-27 18:33:44 +00:00
|
|
|
int cache_len;
|
2006-08-21 19:18:09 +00:00
|
|
|
int count;
|
|
|
|
struct file_summary *next;
|
|
|
|
} *list = NULL, *cur;
|
2012-03-22 19:51:16 +00:00
|
|
|
|
2007-09-20 23:14:30 +00:00
|
|
|
switch (cmd) {
|
|
|
|
case CLI_INIT:
|
|
|
|
e->command = "memory show summary";
|
|
|
|
e->usage =
|
|
|
|
"Usage: memory show summary [<file>]\n"
|
|
|
|
" Summarizes heap memory allocations by file, or optionally\n"
|
2012-11-08 17:38:31 +00:00
|
|
|
" by function, if a file is specified.\n";
|
2007-11-07 00:16:03 +00:00
|
|
|
return NULL;
|
2007-09-20 23:14:30 +00:00
|
|
|
case CLI_GENERATE:
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2012-03-22 19:51:16 +00:00
|
|
|
if (a->argc > 3)
|
2007-09-20 23:14:30 +00:00
|
|
|
fn = a->argv[3];
|
2003-04-28 19:58:43 +00:00
|
|
|
|
2003-08-13 15:25:16 +00:00
|
|
|
ast_mutex_lock(®lock);
|
2012-11-08 17:38:31 +00:00
|
|
|
for (x = 0; x < ARRAY_LEN(regions); x++) {
|
2006-08-21 19:18:09 +00:00
|
|
|
for (reg = regions[x]; reg; reg = reg->next) {
|
|
|
|
if (fn && strcasecmp(fn, reg->file))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
for (cur = list; cur; cur = cur->next) {
|
|
|
|
if ((!fn && !strcmp(cur->fn, reg->file)) || (fn && !strcmp(cur->fn, reg->func)))
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (!cur) {
|
2012-07-31 20:21:43 +00:00
|
|
|
cur = ast_alloca(sizeof(*cur));
|
2006-08-21 19:18:09 +00:00
|
|
|
memset(cur, 0, sizeof(*cur));
|
|
|
|
ast_copy_string(cur->fn, fn ? reg->func : reg->file, sizeof(cur->fn));
|
|
|
|
cur->next = list;
|
|
|
|
list = cur;
|
2003-04-28 19:58:43 +00:00
|
|
|
}
|
2006-08-21 19:18:09 +00:00
|
|
|
|
|
|
|
cur->len += reg->len;
|
2006-12-27 18:33:44 +00:00
|
|
|
if (reg->cache)
|
|
|
|
cur->cache_len += reg->len;
|
2006-08-21 19:18:09 +00:00
|
|
|
cur->count++;
|
2003-04-28 19:58:43 +00:00
|
|
|
}
|
|
|
|
}
|
2003-08-13 15:25:16 +00:00
|
|
|
ast_mutex_unlock(®lock);
|
2012-03-22 19:51:16 +00:00
|
|
|
|
2003-04-28 19:58:43 +00:00
|
|
|
/* Dump the whole list */
|
2006-08-21 19:18:09 +00:00
|
|
|
for (cur = list; cur; cur = cur->next) {
|
2006-09-20 22:14:04 +00:00
|
|
|
len += cur->len;
|
2006-12-27 18:33:44 +00:00
|
|
|
cache_len += cur->cache_len;
|
2006-09-20 22:14:04 +00:00
|
|
|
count += cur->count;
|
2006-12-27 18:33:44 +00:00
|
|
|
if (cur->cache_len) {
|
|
|
|
if (fn) {
|
2012-03-22 19:51:16 +00:00
|
|
|
ast_cli(a->fd, "%10d bytes (%10d cache) in %d allocations in function '%s' of '%s'\n",
|
2006-12-27 18:33:44 +00:00
|
|
|
cur->len, cur->cache_len, cur->count, cur->fn, fn);
|
|
|
|
} else {
|
2012-03-22 19:51:16 +00:00
|
|
|
ast_cli(a->fd, "%10d bytes (%10d cache) in %d allocations in file '%s'\n",
|
2006-12-27 18:33:44 +00:00
|
|
|
cur->len, cur->cache_len, cur->count, cur->fn);
|
|
|
|
}
|
2005-08-03 04:50:09 +00:00
|
|
|
} else {
|
2006-12-27 18:33:44 +00:00
|
|
|
if (fn) {
|
2012-03-22 19:51:16 +00:00
|
|
|
ast_cli(a->fd, "%10d bytes in %d allocations in function '%s' of '%s'\n",
|
2006-12-27 18:33:44 +00:00
|
|
|
cur->len, cur->count, cur->fn, fn);
|
|
|
|
} else {
|
2012-03-22 19:51:16 +00:00
|
|
|
ast_cli(a->fd, "%10d bytes in %d allocations in file '%s'\n",
|
2006-12-27 18:33:44 +00:00
|
|
|
cur->len, cur->count, cur->fn);
|
|
|
|
}
|
2005-08-03 04:50:09 +00:00
|
|
|
}
|
2003-04-28 19:58:43 +00:00
|
|
|
}
|
2006-08-21 19:18:09 +00:00
|
|
|
|
2006-12-27 18:33:44 +00:00
|
|
|
if (cache_len)
|
2007-09-20 23:14:30 +00:00
|
|
|
ast_cli(a->fd, "%d bytes allocated (%d in caches) in %d allocations\n", len, cache_len, count);
|
2006-12-27 18:33:44 +00:00
|
|
|
else
|
2007-09-20 23:14:30 +00:00
|
|
|
ast_cli(a->fd, "%d bytes allocated in %d allocations\n", len, count);
|
2006-08-21 19:18:09 +00:00
|
|
|
|
2007-09-20 23:14:30 +00:00
|
|
|
return CLI_SUCCESS;
|
2003-04-28 19:58:43 +00:00
|
|
|
}
|
|
|
|
|
2006-09-18 19:54:18 +00:00
|
|
|
static struct ast_cli_entry cli_memory[] = {
|
2007-10-22 20:05:18 +00:00
|
|
|
AST_CLI_DEFINE(handle_memory_show, "Display outstanding memory allocations"),
|
|
|
|
AST_CLI_DEFINE(handle_memory_show_summary, "Summarize outstanding memory allocations"),
|
2006-09-18 19:54:18 +00:00
|
|
|
};
|
2003-04-28 19:58:43 +00:00
|
|
|
|
2012-11-08 17:38:31 +00:00
|
|
|
/*!
|
|
|
|
* \internal
|
|
|
|
* \return Nothing
|
|
|
|
*/
|
|
|
|
static void mm_atexit_final(void)
|
2003-04-28 19:58:43 +00:00
|
|
|
{
|
2012-11-08 17:38:31 +00:00
|
|
|
FILE *log;
|
2008-07-11 14:16:15 +00:00
|
|
|
|
2012-11-08 17:38:31 +00:00
|
|
|
/* Flush all delayed memory free circular arrays. */
|
|
|
|
freed_regions_flush(&whales);
|
|
|
|
freed_regions_flush(&minnows);
|
|
|
|
|
|
|
|
/* Close the log file. */
|
|
|
|
log = mmlog;
|
|
|
|
mmlog = NULL;
|
|
|
|
if (log) {
|
|
|
|
fclose(log);
|
2008-07-11 14:16:15 +00:00
|
|
|
}
|
2012-11-08 17:38:31 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*!
|
|
|
|
* \brief Initialize malloc debug phase 1.
|
|
|
|
*
|
|
|
|
* \note Must be called first thing in main().
|
|
|
|
*
|
|
|
|
* \return Nothing
|
|
|
|
*/
|
|
|
|
void __ast_mm_init_phase_1(void)
|
|
|
|
{
|
|
|
|
atexit(mm_atexit_final);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*!
|
|
|
|
* \internal
|
|
|
|
* \return Nothing
|
|
|
|
*/
|
|
|
|
static void mm_atexit_ast(void)
|
|
|
|
{
|
|
|
|
ast_cli_unregister_multiple(cli_memory, ARRAY_LEN(cli_memory));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*!
|
|
|
|
* \brief Initialize malloc debug phase 2.
|
|
|
|
*
|
|
|
|
* \return Nothing
|
|
|
|
*/
|
|
|
|
void __ast_mm_init_phase_2(void)
|
|
|
|
{
|
|
|
|
char filename[PATH_MAX];
|
2006-08-21 19:18:09 +00:00
|
|
|
|
2008-12-05 10:31:25 +00:00
|
|
|
ast_cli_register_multiple(cli_memory, ARRAY_LEN(cli_memory));
|
2012-03-22 19:51:16 +00:00
|
|
|
|
2007-12-18 09:46:18 +00:00
|
|
|
snprintf(filename, sizeof(filename), "%s/mmlog", ast_config_AST_LOG_DIR);
|
2012-03-22 19:51:16 +00:00
|
|
|
|
2008-02-05 23:00:15 +00:00
|
|
|
ast_verb(1, "Asterisk Malloc Debugger Started (see %s))\n", filename);
|
2012-03-22 19:51:16 +00:00
|
|
|
|
2012-11-08 17:38:31 +00:00
|
|
|
mmlog = fopen(filename, "a+");
|
|
|
|
if (mmlog) {
|
|
|
|
fprintf(mmlog, "%ld - New session\n", (long) time(NULL));
|
2003-05-08 18:51:06 +00:00
|
|
|
fflush(mmlog);
|
2012-11-08 17:38:31 +00:00
|
|
|
} else {
|
|
|
|
ast_log(LOG_ERROR, "Could not open malloc debug log file: %s\n", filename);
|
2003-05-08 18:51:06 +00:00
|
|
|
}
|
2012-11-08 17:38:31 +00:00
|
|
|
|
|
|
|
ast_register_atexit(mm_atexit_ast);
|
2003-04-28 19:58:43 +00:00
|
|
|
}
|
|
|
|
|
2012-11-08 17:38:31 +00:00
|
|
|
#endif /* defined(__AST_DEBUG_MALLOC) */
|