233 lines
6.6 KiB
C
233 lines
6.6 KiB
C
/* mem_track.h
|
|
*
|
|
* Copyright (C) 2006-2016 wolfSSL Inc.
|
|
*
|
|
* This file is part of wolfSSL.
|
|
*
|
|
* wolfSSL is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* wolfSSL is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
|
|
*/
|
|
|
|
|
|
/* The memory tracker overrides the wolfSSL memory callback system and uses a
|
|
* static to track the total, peak and currently allocated bytes.
|
|
*
|
|
* If you are already using the memory callbacks then enabling this will
|
|
* override the memory callbacks and prevent your memory callbacks from
|
|
* working. This assumes malloc() and free() are available. Feel free to
|
|
* customize this for your needs.
|
|
|
|
* The enable this feature define the following:
|
|
* #define USE_WOLFSSL_MEMORY
|
|
* #define WOLFSSL_TRACK_MEMORY
|
|
*
|
|
* On startup call:
|
|
* InitMemoryTracker();
|
|
*
|
|
* When ready to dump the memory report call:
|
|
* ShowMemoryTracker();
|
|
*
|
|
* Report example:
|
|
* total Allocs = 228
|
|
* total Bytes = 93442
|
|
* peak Bytes = 8840
|
|
* current Bytes = 0
|
|
*
|
|
*
|
|
* You can also:
|
|
* #define WOLFSSL_DEBUG_MEMORY
|
|
*
|
|
* To print every alloc/free along with the function and line number.
|
|
* Example output:
|
|
* Alloc: 0x7fa14a500010 -> 120 at wc_InitRng:496
|
|
* Free: 0x7fa14a500010 -> 120 at wc_FreeRng:606
|
|
*/
|
|
|
|
|
|
#ifndef WOLFSSL_MEM_TRACK_H
|
|
#define WOLFSSL_MEM_TRACK_H
|
|
|
|
#if defined(USE_WOLFSSL_MEMORY) && !defined(WOLFSSL_STATIC_MEMORY)
|
|
|
|
#include "wolfssl/wolfcrypt/logging.h"
|
|
|
|
typedef struct memoryStats {
|
|
size_t totalAllocs; /* number of allocations */
|
|
size_t totalBytes; /* total number of bytes allocated */
|
|
size_t peakBytes; /* concurrent max bytes */
|
|
size_t currentBytes; /* total current bytes in use */
|
|
} memoryStats;
|
|
|
|
typedef struct memHint {
|
|
size_t thisSize; /* size of this memory */
|
|
void* thisMemory; /* actual memory for user */
|
|
} memHint;
|
|
|
|
typedef struct memoryTrack {
|
|
union {
|
|
memHint hint;
|
|
byte alignit[16]; /* make sure we have strong alignment */
|
|
} u;
|
|
} memoryTrack;
|
|
|
|
#if defined(WOLFSSL_TRACK_MEMORY)
|
|
#define DO_MEM_STATS
|
|
static memoryStats ourMemStats;
|
|
#endif
|
|
|
|
/* if defined to not using inline then declare function prototypes */
|
|
#ifdef NO_INLINE
|
|
#define STATIC
|
|
WOLFSSL_LOCAL void* TrackMalloc(size_t sz);
|
|
WOLFSSL_LOCAL void TrackFree(void* ptr);
|
|
WOLFSSL_LOCAL void* TrackRealloc(void* ptr, size_t sz);
|
|
WOLFSSL_LOCAL int InitMemoryTracker(void);
|
|
WOLFSSL_LOCAL void ShowMemoryTracker(void);
|
|
#else
|
|
#define STATIC static
|
|
#endif
|
|
|
|
#ifdef WOLFSSL_DEBUG_MEMORY
|
|
STATIC INLINE void* TrackMalloc(size_t sz, const char* func, unsigned int line)
|
|
#else
|
|
STATIC INLINE void* TrackMalloc(size_t sz)
|
|
#endif
|
|
{
|
|
memoryTrack* mt;
|
|
|
|
if (sz == 0)
|
|
return NULL;
|
|
|
|
mt = (memoryTrack*)malloc(sizeof(memoryTrack) + sz);
|
|
if (mt == NULL)
|
|
return NULL;
|
|
|
|
mt->u.hint.thisSize = sz;
|
|
mt->u.hint.thisMemory = (byte*)mt + sizeof(memoryTrack);
|
|
|
|
#ifdef WOLFSSL_DEBUG_MEMORY
|
|
printf("Alloc: %p -> %u at %s:%d\n", mt->u.hint.thisMemory, (word32)sz, func, line);
|
|
#endif
|
|
|
|
#ifdef DO_MEM_STATS
|
|
ourMemStats.totalAllocs++;
|
|
ourMemStats.totalBytes += sz;
|
|
ourMemStats.currentBytes += sz;
|
|
if (ourMemStats.currentBytes > ourMemStats.peakBytes)
|
|
ourMemStats.peakBytes = ourMemStats.currentBytes;
|
|
#endif
|
|
|
|
return mt->u.hint.thisMemory;
|
|
}
|
|
|
|
|
|
#ifdef WOLFSSL_DEBUG_MEMORY
|
|
STATIC INLINE void TrackFree(void* ptr, const char* func, unsigned int line)
|
|
#else
|
|
STATIC INLINE void TrackFree(void* ptr)
|
|
#endif
|
|
{
|
|
memoryTrack* mt;
|
|
|
|
if (ptr == NULL) {
|
|
return;
|
|
}
|
|
|
|
mt = (memoryTrack*)ptr;
|
|
--mt; /* same as minus sizeof(memoryTrack), removes header */
|
|
|
|
#ifdef DO_MEM_STATS
|
|
ourMemStats.currentBytes -= mt->u.hint.thisSize;
|
|
#endif
|
|
|
|
#ifdef WOLFSSL_DEBUG_MEMORY
|
|
printf("Free: %p -> %u at %s:%d\n", ptr, (word32)mt->u.hint.thisSize, func, line);
|
|
#endif
|
|
|
|
free(mt);
|
|
}
|
|
|
|
|
|
#ifdef WOLFSSL_DEBUG_MEMORY
|
|
STATIC INLINE void* TrackRealloc(void* ptr, size_t sz, const char* func, unsigned int line)
|
|
#else
|
|
STATIC INLINE void* TrackRealloc(void* ptr, size_t sz)
|
|
#endif
|
|
{
|
|
#ifdef WOLFSSL_DEBUG_MEMORY
|
|
void* ret = TrackMalloc(sz, func, line);
|
|
#else
|
|
void* ret = TrackMalloc(sz);
|
|
#endif
|
|
|
|
if (ptr) {
|
|
/* if realloc is bigger, don't overread old ptr */
|
|
memoryTrack* mt = (memoryTrack*)ptr;
|
|
--mt; /* same as minus sizeof(memoryTrack), removes header */
|
|
|
|
if (mt->u.hint.thisSize < sz)
|
|
sz = mt->u.hint.thisSize;
|
|
}
|
|
|
|
if (ret && ptr)
|
|
XMEMCPY(ret, ptr, sz);
|
|
|
|
if (ret) {
|
|
#ifdef WOLFSSL_DEBUG_MEMORY
|
|
TrackFree(ptr, func, line);
|
|
#else
|
|
TrackFree(ptr);
|
|
#endif
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
STATIC INLINE int InitMemoryTracker(void)
|
|
{
|
|
int ret = wolfSSL_SetAllocators(TrackMalloc, TrackFree, TrackRealloc);
|
|
if (ret < 0) {
|
|
printf("wolfSSL SetAllocators failed for track memory\n");
|
|
return ret;
|
|
}
|
|
|
|
#ifdef DO_MEM_STATS
|
|
ourMemStats.totalAllocs = 0;
|
|
ourMemStats.totalBytes = 0;
|
|
ourMemStats.peakBytes = 0;
|
|
ourMemStats.currentBytes = 0;
|
|
#endif
|
|
|
|
return ret;
|
|
}
|
|
|
|
STATIC INLINE void ShowMemoryTracker(void)
|
|
{
|
|
#ifdef DO_MEM_STATS
|
|
printf("total Allocs = %9lu\n",
|
|
(unsigned long)ourMemStats.totalAllocs);
|
|
printf("total Bytes = %9lu\n",
|
|
(unsigned long)ourMemStats.totalBytes);
|
|
printf("peak Bytes = %9lu\n",
|
|
(unsigned long)ourMemStats.peakBytes);
|
|
printf("current Bytes = %9lu\n",
|
|
(unsigned long)ourMemStats.currentBytes);
|
|
#endif
|
|
}
|
|
|
|
#endif /* USE_WOLFSSL_MEMORY */
|
|
|
|
#endif /* WOLFSSL_MEM_TRACK_H */
|
|
|