//format could be hex or char.
void StandardMemoryPool :: dumpToStdOut(uint32 ElemInLine, const uint32 format) const
{
uint32 i = 0, j = 0;
uint32 residue = 0;
uint8 *ptr = m_poolMemory;
printf("\n\n");
mem_debug_log("\n\nStart to dump memory pool.");
mem_debug_log("Type: Standard Memory");
mem_debug_log("Total Size: %lu", m_totalPoolSize);
mem_debug_log("Free Size: %lu", m_freePoolSize);
printf("\n\nMemory pool ------------------------------------------------------------------------------------------------\n\n");
residue = m_poolSize%ElemInLine;
for(i = 0; i < m_poolSize/ElemInLine; i ++)
{
for(j = 0; j < ElemInLine; j++)
{
if(format == DUMP_HEX)
{
printf("[Address: %p] : 0x%x",ptr, *ptr);
}
else if(format == DUMP_CHAR)
{
printf("[Address: %p] : %c ",ptr, *ptr);
}
else
{
mem_error_log("Error dump format.\n");
return;
}
ptr ++;
}
printf("\n");
}
if(residue)
{
for(i = 0; i < residue; i++)
{
printf("%c", *ptr);
ptr ++;
}
printf("\n");
}
printf("\n\nMemory pool ------------------------------------------------------------------------------------------------\n");
mem_debug_log("Finish to dump memory pool.");
printf("\n\n");
}
StandardMemoryPool :: StandardMemoryPool(uint64 sizeInBytes, uint32 boundsCheck)
{
if(!sizeInBytes)
{
mem_error_log("Can not create memory pool with size 0");
}
m_poolSize = sizeInBytes;
m_boundsCheck = boundsCheck;
m_poolMemory = new uint8[sizeInBytes];
//Log
mem_debug_log("StandardPool Constructor initialization in address %p with size %lu\n", m_poolMemory, sizeInBytes);
mem_debug_log("StandardPool created with m_trashOnCreation:%d m_trashOnAlloc: %d m_trashOnFree :%d m_boundsCheck %d", m_trashOnCreation, m_trashOnAlloc, m_trashOnFree, m_boundsCheck);
m_freePoolSize = sizeInBytes - sizeof(Chunk);
m_totalPoolSize = sizeInBytes;
// Trash it if required
if(m_trashOnCreation)
{
memset(m_poolMemory, s_trashOnCreation, sizeInBytes);
}
if(m_boundsCheck)
{
m_freePoolSize -= s_boundsCheckSize * 2;
Chunk freeChunk(sizeInBytes - sizeof(Chunk) - 2 * s_boundsCheckSize);
freeChunk.name_set(MEMORY_POOL_BLOCK_NAME);
freeChunk.write(m_poolMemory + s_boundsCheckSize);
memcpy(m_poolMemory, s_startBound, s_boundsCheckSize);
memcpy(m_poolMemory + sizeInBytes - s_boundsCheckSize, s_endBound, s_boundsCheckSize);
freeChunk.m_next = NULL;
freeChunk.m_prev = NULL;
}
else
{
Chunk freeChunk(sizeInBytes - sizeof(Chunk));
freeChunk.name_set(MEMORY_POOL_BLOCK_NAME);
freeChunk.write(m_poolMemory);
freeChunk.m_next = NULL;
freeChunk.m_prev = NULL;
}
#ifdef MEM_DEBUG_ON
dumpToStdOut(DUMP_ELEMENT_PER_LINE, DUMP_HEX);
#endif
}
void StandardMemoryPool :: dump_memory_block_list(const std::string& fileName) const
{
FILE* f = NULL;
uint32 i = 1;
Chunk *block = (Chunk *)(m_boundsCheck == 1 ? m_poolMemory + s_boundsCheckSize : m_poolMemory);
if(block == NULL)
{
mem_error_log("block list is NULL.");
return;
}
mem_debug_log("Start to print the memory block list. Memory total size: %lu, Free memory size: %lu. \n\n\n", m_totalPoolSize, m_freePoolSize);
f = fopen(fileName.c_str(), "w+");
if(!f)
{
mem_error_log("File open error: %s", strerror(errno));
return;
}
fprintf(f, "Memory block list ------------------------------------------------------------------------------------------------\n\n");
while(block)
{
fprintf(f, "[block: %d] address: %p name: %s free: %d size:%d-->\n", i, block, block->m_name, block->m_free, block->m_userdataSize);
block = block->m_next;
i++;
}
fprintf(f, "[last block] NULL\n\n\n");
fclose(f);
}
/**
* \brief Dump the memory state to file
*/
void StandardMemoryPool :: dumpToFile(const std::string& fileName, const uint32 itemsPerLine, const uint32 format) const
{
FILE* f = NULL;
uint32 i = 0, j = 0;
uint8 *ptr = m_poolMemory;
uint32 residue = m_poolSize%itemsPerLine;
f = fopen(fileName.c_str(), "w+");
if(!f)
{
mem_error_log("File open error: %s", strerror(errno));
return;
}
fprintf(f, "Memory pool ------------------------------------------------------------------------------------------------\n\n");
fprintf(f, "Type: Standard Memory\n");
fprintf(f, "Total Size: %lu\n", m_totalPoolSize);
fprintf(f, "Free Size: %lu\n", m_freePoolSize);
for(i = 0; i < m_poolSize/itemsPerLine; i ++)
{
for(j = 0; j < itemsPerLine; j++)
{
if(format == DUMP_HEX)
{
fprintf(f, "[Address: %p] : 0x%x ",ptr, *ptr);
}
else if(format == DUMP_CHAR)
{
fprintf(f, "[Address: %p] : %c ",ptr, *ptr);
}
else
{
mem_error_log("Error dump format.\n");
return;
}
ptr ++;
}
fprintf(f, "\n");
}
if(residue)
{
for(i = 0; i < residue; i++)
{
fprintf(f, "%c", *ptr);
ptr ++;
}
fprintf(f, "\n");
}
fprintf(f, "\n\nMemory pool ------------------------------------------------------------------------------------------------\n");
mem_debug_log("Successful to dump memory pool.");
fclose(f);
}
static void
dbg_remove_free_queue(void)
{
struct dbg_malloc_header *hdr;
struct dbg_malloc_trailer *trlr;
size_t real_size;
unsigned long *dp;
size_t i;
char *data;
int overwrite;
hdr = free_queue;
trlr = trlr_from_hdr(hdr);
free_queue = trlr->next;
if (!free_queue)
free_queue_tail = NULL;
free_queue_len--;
data = ((char *) hdr) + sizeof(*hdr);
if (hdr->signature != FREE_SIGNATURE) {
mem_debug_log(data, hdr, trlr, NULL, "Header overrun");
goto out;
}
real_size = dbg_align(hdr->size);
overwrite = 0;
dp = (unsigned long *) data;
for (i=0; i<real_size; i+=sizeof(unsigned long), dp++)
if (*dp != FREE_SIGNATURE)
overwrite = 1;
if (overwrite)
mem_debug_log(data, hdr, trlr, NULL, "Write while free");
out:
malloc_os_hnd->mem_free(hdr);
}
void StandardMemoryPool :: memory_pool_info() const
{
mem_debug_log("Start to log memory pool information.");
printf("\n\nMemory Pool information:\n");
printf("Address: %p\n", m_poolMemory);
printf("Total space: %lu\n", m_totalPoolSize);
printf("Free space: %lu\n", m_freePoolSize);
printf("Trash on allocate: %d\n", m_trashOnAlloc);
printf("Trash on creation: %d\n", m_trashOnCreation);
printf("Trash on free: %d\n", m_trashOnFree);
}
void
ipmi_debug_malloc_cleanup(void)
{
struct dbg_malloc_trailer *trlr;
if (DEBUG_MALLOC) {
/* Check the free queue for any problems. */
while (free_queue_len > 0) {
dbg_remove_free_queue();
}
/* Now log everything that was still allocated. */
while (alloced) {
trlr = trlr_from_hdr(alloced);
mem_debug_log(((char *) alloced) + sizeof(*alloced),
alloced, NULL, NULL, "Never freed");
alloced = trlr->next;
}
}
}
int Chunk :: name_set(const char *name)
{
if(!name)
{
mem_error_log("memory block name is NULL.");
return FALSE;
}
if(strlen(name) > BLOCK_NAME_LEN)
{
mem_error_log("memory block name length larger than 16.");
return FALSE;
}
memset(m_name, '\0', BLOCK_NAME_LEN);
strncpy(m_name, name, strlen(name));
//Log
mem_debug_log("New set memory block name: %s", m_name);
return TRUE;
}
void StandardMemoryPool :: memory_block_list() const
{
uint32 i = 1;
Chunk *block = (Chunk *)(m_boundsCheck == 1 ? m_poolMemory + s_boundsCheckSize : m_poolMemory);
if(block == NULL)
{
mem_error_log("block list is NULL.");
return;
}
mem_debug_log("Start to print the memory block list. Memory total size: %lu, Free memory size: %lu. \n\n\n", m_totalPoolSize, m_freePoolSize);
while(block)
{
printf("[block: %d] address: %p name: %s free: %d size:%d-->\n", i, block, block->m_name, block->m_free, block->m_userdataSize);
block = block->m_next;
i++;
}
printf("[last block] NULL\n\n\n");
}
void *StandardMemoryPool :: allocate(uint64 size)
{
mem_debug_log("Start to allocate block with size.");
// dumpToFile("pool.xml", 4, DUMP_HEX);
// memory_block_list();
#ifdef MEM_DEBUG_ON
memory_block_list();
#endif
if(size > MAX_MEMPOOL_SIZE || size == 0)
{
mem_error_log("Wrong memory pool size.\n");
return NULL;
}
uint64 requiredSize = size + sizeof(Chunk);
if(m_boundsCheck)
{
requiredSize += s_boundsCheckSize *2;
}
Chunk *block = (Chunk *)(m_boundsCheck == 1 ? m_poolMemory + s_boundsCheckSize : m_poolMemory);
while(block)
{
if(block->m_free && block->m_userdataSize >= requiredSize)
{
break;
}
block = block->m_next;
}
uint8 * blockData = (uint8 *)block;
// If block is found, return NULL
if(!block)
{
mem_error_log("Free block not found.");
return NULL;
}
else
{
mem_debug_log("First free block address: %p.", blockData);
}
// If the block is valid, create a new free block with what remains of the block memory
uint64 freeUserDataSize = block->m_userdataSize - requiredSize;
//Log
mem_debug_log("User required allocate size: %lu, block remain size:%lu, sizeof(Chunk): %lu", requiredSize, freeUserDataSize, sizeof(Chunk));
if( freeUserDataSize > s_minFreeBlockSize)
{
Chunk freeBlock(freeUserDataSize);
freeBlock.m_next = block->m_next;
freeBlock.m_prev = block;
//Log
mem_debug_log("New header saved in address: %p", blockData + requiredSize);
if(freeBlock.m_next)
{
freeBlock.m_next->m_prev = (Chunk*)(blockData + requiredSize);
}
freeBlock.write(blockData + requiredSize);
if(m_boundsCheck)
{
memcpy(blockData + requiredSize - s_boundsCheckSize, s_startBound, s_boundsCheckSize);
}
block->m_next = (Chunk*)(blockData + requiredSize);
block->m_userdataSize = size;
}
// If a block is found, update the pool size
m_freePoolSize -= block->m_userdataSize;
// Set the memory block
block->m_free = false;
// Move the memory around if guards are needed
if(m_boundsCheck)
{
memcpy(blockData - s_boundsCheckSize, s_startBound, s_boundsCheckSize);
memcpy(blockData + sizeof(Chunk) + block->m_userdataSize, s_endBound, s_boundsCheckSize);
}
//Trash on alloc if required
if(m_trashOnAlloc)
{
memset(blockData + sizeof(Chunk), s_trashOnAllocSignature, block->m_userdataSize);
}
#ifdef MEM_DEBUG_ON
//memory_block_list();
//dumpToStdOut(DUMP_ELEMENT_PER_LINE, DUMP_HEX);
#endif
//Log
mem_debug_log("Retrun allocated block address: %p", blockData + sizeof(Chunk));
mem_debug_log("Type: Standard Memory");
mem_debug_log("Total Size: %lu", m_totalPoolSize);
mem_debug_log("Free Size: %lu", m_freePoolSize);
return (blockData + sizeof(Chunk));
}
StandardMemoryPool :: ~StandardMemoryPool()
{
mem_debug_log("StandardPool Deconstructor deconstruction.");
delete [] m_poolMemory;
}
static void
ipmi_debug_free(void *to_free, void **tb)
{
struct dbg_malloc_header *hdr;
struct dbg_malloc_trailer *trlr;
struct dbg_malloc_trailer *trlr2;
size_t i;
size_t real_size;
unsigned long *dp;
char *data = to_free;
int overwrite;
if (to_free == NULL) {
mem_debug_log(data, NULL, NULL, tb, "Free called with NULL");
return;
}
hdr = (struct dbg_malloc_header *) (data - sizeof(*hdr));
if ((hdr->signature != SIGNATURE) && (hdr->signature != FREE_SIGNATURE)) {
mem_debug_log(data, NULL, NULL, tb, "Free of invalid data");
return;
}
trlr = trlr_from_hdr(hdr);
if (hdr->signature == FREE_SIGNATURE) {
mem_debug_log(data, hdr, trlr, tb, "Double free");
return;
}
/* Remove it from the alloced list. */
if (trlr->next) {
trlr2 = trlr_from_hdr(trlr->next);
trlr2->prev = trlr->prev;
} else {
alloced_tail = trlr->prev;
if (alloced_tail) {
trlr2 = trlr_from_hdr(alloced_tail);
trlr2->next = NULL;
}
}
if (trlr->prev) {
trlr2 = trlr_from_hdr(trlr->prev);
trlr2->next = trlr->next;
} else {
alloced = trlr->next;
if (alloced) {
trlr2 = trlr_from_hdr(alloced);
trlr2->prev = NULL;
}
}
real_size = dbg_align(hdr->size);
/* Check for writes after the end of data. */
overwrite = 0;
for (i=0; i<TB_SIZE; i++)
if (trlr->tb[i] != ((void *) SIGNATURE))
overwrite = 1;
for (i=hdr->size; i<real_size; i++)
if (data[i] != BYTE_SIGNATURE)
overwrite = 1;
if (overwrite) {
mem_debug_log(data, hdr, trlr, tb, "Overwrite");
}
hdr->signature = FREE_SIGNATURE;
#ifdef HAVE_EXECINFO_H
memcpy(trlr->tb, tb, sizeof(trlr->tb));
#endif
/* Fill the data area with a signature. */
dp = (unsigned long *) (((char *) hdr) + sizeof(*hdr));
for (i=0; i<real_size; i+=sizeof(unsigned long), dp++)
*dp = FREE_SIGNATURE;
enqueue_dbg_free(hdr, trlr);
}