mmgr.cpp

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				{
					if (au->prev)	au->prev->next = au->next;
					if (au->next)	au->next->prev = au->prev;
				}
			}

			// Re-insert it back into the hash table

			hashIndex = ((unsigned int) au->reportedAddress >> 4) & (hashSize - 1);
			if (hashTable[hashIndex]) hashTable[hashIndex]->prev = au;
			au->next = hashTable[hashIndex];
			au->prev = NULL;
			hashTable[hashIndex] = au;
		}

		// Account for the new allocatin unit in our stats

		stats.totalReportedMemory += au->reportedSize;
		stats.totalActualMemory   += au->actualSize;
		if (stats.totalReportedMemory > stats.peakReportedMemory) stats.peakReportedMemory = stats.totalReportedMemory;
		if (stats.totalActualMemory   > stats.peakActualMemory)   stats.peakActualMemory   = stats.totalActualMemory;
		int	deltaReportedSize = reportedSize - originalReportedSize;
		if (deltaReportedSize > 0)
		{
			stats.accumulatedReportedMemory += deltaReportedSize;
			stats.accumulatedActualMemory += deltaReportedSize;
		}

		// Prepare the allocation unit for use (wipe it with recognizable garbage)

		wipeWithPattern(au, unusedPattern, originalReportedSize);

		// If you hit this assert, then something went wrong, because the allocation unit was properly validated PRIOR to
		// the reallocation. This should not happen.
		m_assert(m_validateAllocUnit(au));

		// Validate every single allocated unit in memory

		if (alwaysValidateAll) m_validateAllAllocUnits();

		// Log the result

		if (alwaysLogAll) log("[~] ---->             addr 0x%08X", (unsigned int) au->reportedAddress);

		// Resetting the globals insures that if at some later time, somebody calls our memory manager from an unknown
		// source (i.e. they didn't include our H file) then we won't think it was the last allocation.

		resetGlobals();

		// Return the (reported) address of the new allocation unit

		#ifdef TEST_MEMORY_MANAGER
		log("[D] EXIT : m_reallocator()");
		#endif

		return au->reportedAddress;
	}
	catch(const char *err)
	{
		// Deal with the errors

		log("[!] %s", err);
		resetGlobals();

		#ifdef TEST_MEMORY_MANAGER
		log("[D] EXIT : m_reallocator()");
		#endif

		return NULL;
	}
}

// ---------------------------------------------------------------------------------------------------------------------------------
// Deallocate memory and track it
// ---------------------------------------------------------------------------------------------------------------------------------

void	m_deallocator(const char *sourceFile, const unsigned int sourceLine, const char *sourceFunc, const unsigned int deallocationType, const void *reportedAddress)
{
	try
	{
		#ifdef TEST_MEMORY_MANAGER
		log("[D] ENTER: m_deallocator()");
		#endif

		// Log the request

		if (alwaysLogAll) log("[-] ----- %8s of addr 0x%08X           by %s", allocationTypes[deallocationType], (unsigned int) reportedAddress, ownerString(sourceFile, sourceLine, sourceFunc));

		// Go get the allocation unit

		sAllocUnit	*au = findAllocUnit(reportedAddress);

		// If you hit this assert, you tried to deallocate RAM that wasn't allocated by this memory manager.
		m_assert(au != NULL);
		if (au == NULL) throw "Request to deallocate RAM that was never allocated";

		// If you hit this assert, then the allocation unit that is about to be deallocated is damaged. But you probably
		// already know that from a previous assert you should have seen in validateAllocUnit() :)
		m_assert(m_validateAllocUnit(au));

		// If you hit this assert, then this deallocation was made from a source that isn't setup to use this memory
		// tracking software, use the stack frame to locate the source and include our H file.
		m_assert(deallocationType != m_alloc_unknown);

		// If you hit this assert, you were trying to deallocate RAM that was not allocated in a way that is compatible with
		// the deallocation method requested. In other words, you have a allocation/deallocation mismatch.
		m_assert((deallocationType == m_alloc_delete       && au->allocationType == m_alloc_new      ) ||
			 (deallocationType == m_alloc_delete_array && au->allocationType == m_alloc_new_array) ||
			 (deallocationType == m_alloc_free         && au->allocationType == m_alloc_malloc   ) ||
			 (deallocationType == m_alloc_free         && au->allocationType == m_alloc_calloc   ) ||
			 (deallocationType == m_alloc_free         && au->allocationType == m_alloc_realloc  ) ||
			 (deallocationType == m_alloc_unknown                                                ) );

		// If you hit this assert, then the "break on dealloc" flag for this allocation unit is set. Interrogate the 'au'
		// variable to determine information about this allocation unit.
		m_assert(au->breakOnDealloc == false);

		// Wipe the deallocated RAM with a new pattern. This doen't actually do us much good in debug mode under WIN32,
		// because Microsoft's memory debugging & tracking utilities will wipe it right after we do. Oh well.

		wipeWithPattern(au, releasedPattern);

		// Do the deallocation

		free(au->actualAddress);

		// Remove this allocation unit from the hash table

		unsigned int	hashIndex = ((unsigned int) au->reportedAddress >> 4) & (hashSize - 1);
		if (hashTable[hashIndex] == au)
		{
			hashTable[hashIndex] = au->next;
		}
		else
		{
			if (au->prev)	au->prev->next = au->next;
			if (au->next)	au->next->prev = au->prev;
		}

		// Remove this allocation from our stats

		stats.totalReportedMemory -= au->reportedSize;
		stats.totalActualMemory   -= au->actualSize;
		stats.totalAllocUnitCount--;

		// Add this allocation unit to the front of our reservoir of unused allocation units

		memset(au, 0, sizeof(sAllocUnit));
		au->next = reservoir;
		reservoir = au;

		// Resetting the globals insures that if at some later time, somebody calls our memory manager from an unknown
		// source (i.e. they didn't include our H file) then we won't think it was the last allocation.

		resetGlobals();

		// Validate every single allocated unit in memory

		if (alwaysValidateAll) m_validateAllAllocUnits();

		// If we're in the midst of static deinitialization time, track any pending memory leaks

		if (staticDeinitTime) dumpLeakReport();
	}
	catch(const char *err)
	{
		// Deal with errors

		log("[!] %s", err);
		resetGlobals();
	}

	#ifdef TEST_MEMORY_MANAGER
	log("[D] EXIT : m_deallocator()");
	#endif
}

// ---------------------------------------------------------------------------------------------------------------------------------
// -DOC- The following utilitarian allow you to become proactive in tracking your own memory, or help you narrow in on those tough
// bugs.
// ---------------------------------------------------------------------------------------------------------------------------------

bool	m_validateAddress(const void *reportedAddress)
{
	// Just see if the address exists in our allocation routines

	return findAllocUnit(reportedAddress) != NULL;
}

// ---------------------------------------------------------------------------------------------------------------------------------

bool	m_validateAllocUnit(const sAllocUnit *allocUnit)
{
	// Make sure the padding is untouched

	long	*pre = (long *) allocUnit->actualAddress;
	long	*post = (long *) ((char *)allocUnit->actualAddress + allocUnit->actualSize - paddingSize * sizeof(long));
	bool	errorFlag = false;
	for (unsigned int i = 0; i < paddingSize; i++, pre++, post++)
	{
		if (*pre != (long) prefixPattern)
		{
			log("[!] A memory allocation unit was corrupt because of an underrun:");
			m_dumpAllocUnit(allocUnit, "  ");
			errorFlag = true;
		}

		// If you hit this assert, then you should know that this allocation unit has been damaged. Something (possibly the
		// owner?) has underrun the allocation unit (modified a few bytes prior to the start). You can interrogate the
		// variable 'allocUnit' to see statistics and information about this damaged allocation unit.
		m_assert(*pre == (long) prefixPattern);

		if (*post != (long) postfixPattern)
		{
			log("[!] A memory allocation unit was corrupt because of an overrun:");
			m_dumpAllocUnit(allocUnit, "  ");
			errorFlag = true;
		}

		// If you hit this assert, then you should know that this allocation unit has been damaged. Something (possibly the
		// owner?) has overrun the allocation unit (modified a few bytes after the end). You can interrogate the variable
		// 'allocUnit' to see statistics and information about this damaged allocation unit.
		m_assert(*post == (long) postfixPattern);
	}

	// Return the error status (we invert it, because a return of 'false' means error)

	return !errorFlag;
}

// ---------------------------------------------------------------------------------------------------------------------------------

bool	m_validateAllAllocUnits()
{
	// Just go through each allocation unit in the hash table and count the ones that have errors

	unsigned int	errors = 0;
	unsigned int	allocCount = 0;
	for (unsigned int i = 0; i < hashSize; i++)
	{
		sAllocUnit	*ptr = hashTable[i];
		while(ptr)
		{
			allocCount++;
			if (!m_validateAllocUnit(ptr)) errors++;
			ptr = ptr->next;
		}
	}

	// Test for hash-table correctness

	if (allocCount != stats.totalAllocUnitCount)
	{
		log("[!] Memory tracking hash table corrupt!");
		errors++;
	}

	// If you hit this assert, then the internal memory (hash table) used by this memory tracking software is damaged! The
	// best way to track this down is to use the alwaysLogAll flag in conjunction with STRESS_TEST macro to narrow in on the
	// offending code. After running the application with these settings (and hitting this assert again), interrogate the
	// memory.log file to find the previous successful operation. The corruption will have occurred between that point and this
	// assertion.
	m_assert(allocCount == stats.totalAllocUnitCount);

	// If you hit this assert, then you've probably already been notified that there was a problem with a allocation unit in a
	// prior call to validateAllocUnit(), but this assert is here just to make sure you know about it. :)
	m_assert(errors == 0);

	// Log any errors

	if (errors) log("[!] While validting all allocation units, %d allocation unit(s) were found to have problems", errors);

	// Return the error status

	return errors != 0;
}

// ---------------------------------------------------------------------------------------------------------------------------------
// -DOC- Unused RAM calculation routines. Use these to determine how much of your RAM is unused (in bytes)
// ---------------------------------------------------------------------------------------------------------------------------------

unsigned int	m_calcUnused(const sAllocUnit *allocUnit)
{
	const unsigned long	*ptr = (const unsigned long *) allocUnit->reportedAddress;
	unsigned int		count = 0;

	for (unsigned int i = 0; i < allocUnit->reportedSize; i += sizeof(long), ptr++)
	{
		if (*ptr == unusedPattern) count += sizeof(long);
	}

	return count;
}

// ---------------------------------------------------------------------------------------------------------------------------------

unsigned int	m_calcAllUnused()
{
	// Just go through each allocation unit in the hash table and count the unused RAM

	unsigned int	total = 0;
	for (unsigned int i = 0; i < hashSize; i++)
	{
		sAllocUnit	*ptr = hashTable[i];
		while(ptr)
		{
			total += m_calcUnused(ptr);
			ptr = ptr->next;
		}
	}

	return total;
}

// ---------------------------------------------------------------------------------------------------------------------------------
// -DOC- The following functions are for logging and statistics reporting.
// ---------------------------------------------------------------------------------------------------------------------------------

void	m_dumpAllocUnit(const sAllocUnit *allocUnit, const char *prefix)
{
	log("[I] %sAddress (reported): %010p",       prefix, allocUnit->reportedAddress);
	log("[I] %sAddress (actual)  : %010p",       prefix, allocUnit->actualAddress);
	log("[I] %sSize (reported)   : 0x%08X (%s)", prefix, allocUnit->reportedSize, memorySizeString(allocUnit->reportedSize));
	log("[I] %sSize (actual)     : 0x%08X (%s)", prefix, allocUnit->actualSize, memorySizeString(allocUnit->actualSize));
	log("[I] %sOwner             : %s(%d)::%s",  prefix, allocUnit->sourceFile, allocUnit->sourceLine, allocUnit->sourceFunc);
	log("[I] %sAllocation type   : %s",          prefix, allocationTypes[allocUnit->allocationType]);
	log("[I] %sAllocation number : %d",          prefix, allocUnit->allocationNumber);
}

// ---------------------------------------------------------------------------------------------------------------------------------

void