Memory handling with sentinel checking and pools with tags for grouped free'ing. More...

#include "common.h"
#include <SDL_thread.h>

Include dependency graph for mem.cpp:

Data Structures
struct	memBlockFoot_t
struct	memBlock_t
struct	memPool_t

Macros
#define	MEM_MAX_POOLNAME 64
#define	MEM_HASH 11
#define	MEM_HEAD_SENTINEL_TOP 0xFEBDFAED
#define	MEM_HEAD_SENTINEL_BOT 0xD0BAF0FF
#define	MEM_FOOT_SENTINEL 0xF00DF00D
#define	MEM_MAX_POOLCOUNT 32

Functions
static memPool_t *	Mem_FindPool (const char *name)
memPool_t *	_Mem_CreatePool (const char name, const char fileName, const int fileLine)
void	_Mem_DeletePool (memPool_t pool, const char fileName, const int fileLine)
static memBlock_t *	Mem_PtrToBlock (void *const ptr)
static void *	Mem_BlockToPtr (memBlock_t *const mem)
static memBlockFoot_t *	Mem_BlockToFooter (memBlock_t *const mem)
static size_t	Mem_BlockRawSize (memBlock_t const *const mem)
static void	_Mem_CheckSentinels (memBlock_t const mem, const char fileName, const int fileLine)
void	_Mem_Free (void ptr, const char fileName, const int fileLine)
void	_Mem_FreeTag (memPool_t pool, const int tagNum, const char fileName, const int fileLine)
	Free memory blocks assigned to a specified tag within a pool.
void	_Mem_FreePool (memPool_t pool, const char fileName, const int fileLine)
	Free all items within a pool.
void *	_Mem_Alloc (size_t size, bool zeroFill, memPool_t pool, const int tagNum, const char fileName, const int fileLine)
	Optionally returns 0 filled memory allocated in a pool with a tag.
void *	_Mem_ReAlloc (void ptr, size_t size, const char fileName, const int fileLine)
char *	_Mem_PoolStrDupTo (const char in, char out, memPool_t pool, const int tagNum, const char *fileName, const int fileLine)
	Saves a string to client hunk.
void *	_Mem_PoolDup (const void in, size_t size, memPool_t pool, const int tagNum, const char *fileName, const int fileLine)
char *	_Mem_PoolStrDup (const char in, memPool_t pool, const int tagNum, const char *fileName, const int fileLine)
	No need to null terminate the extra spot because Mem_Alloc returns zero-filled memory.
uint32_t	_Mem_PoolSize (memPool_t *pool)
uint32_t	_Mem_ChangeTag (memPool_t *pool, const int tagFrom, const int tagTo)
static void	_Mem_CheckPoolIntegrity (memPool_t pool, const char fileName, const int fileLine)
void	_Mem_CheckGlobalIntegrity (const char *fileName, const int fileLine)
bool	_Mem_AllocatedInPool (memPool_t pool, const void pointer)
void	Mem_Init (void)
void	Mem_Shutdown (void)

Variables
static SDL_mutex *	z_lock
static memPool_t	m_poolList [MEM_MAX_POOLCOUNT]
static uint32_t	m_numPools

Detailed Description

Memory handling with sentinel checking and pools with tags for grouped free'ing.

Definition in file mem.cpp.

Macro Definition Documentation

◆ MEM_FOOT_SENTINEL

#define MEM_FOOT_SENTINEL 0xF00DF00D

Definition at line 70 of file mem.cpp.

Referenced by _Mem_Alloc(), and _Mem_CheckSentinels().

◆ MEM_HASH

#define MEM_HASH 11

Definition at line 33 of file mem.cpp.

Referenced by _Mem_Alloc(), _Mem_AllocatedInPool(), _Mem_ChangeTag(), _Mem_CheckPoolIntegrity(), _Mem_CreatePool(), _Mem_Free(), _Mem_FreePool(), and _Mem_FreeTag().

◆ MEM_HEAD_SENTINEL_BOT

#define MEM_HEAD_SENTINEL_BOT 0xD0BAF0FF

Definition at line 69 of file mem.cpp.

Referenced by _Mem_Alloc(), and _Mem_CheckSentinels().

◆ MEM_HEAD_SENTINEL_TOP

#define MEM_HEAD_SENTINEL_TOP 0xFEBDFAED

Definition at line 68 of file mem.cpp.

Referenced by _Mem_Alloc(), and _Mem_CheckSentinels().

◆ MEM_MAX_POOLCOUNT

#define MEM_MAX_POOLCOUNT 32

Definition at line 74 of file mem.cpp.

Referenced by _Mem_CreatePool().

◆ MEM_MAX_POOLNAME

#define MEM_MAX_POOLNAME 64

Definition at line 32 of file mem.cpp.

Referenced by _Mem_CreatePool().

Function Documentation

◆ _Mem_Alloc()

void * _Mem_Alloc	(	size_t	size,
		bool	zeroFill,
		memPool_t *	pool,
		const int	tagNum,
		const char *	fileName,
		const int	fileLine )

Optionally returns 0 filled memory allocated in a pool with a tag.

Definition at line 281 of file mem.cpp.

References memBlock_t::allocFile, memBlock_t::allocLine, memPool_t::blockCount, memPool_t::blocks, memBlock_t::botSentinel, memPool_t::byteCount, Mem_BlockToFooter(), Mem_BlockToPtr(), MEM_FOOT_SENTINEL, MEM_HASH, MEM_HEAD_SENTINEL_BOT, MEM_HEAD_SENTINEL_TOP, memBlock_t::memSize, memBlock_t::next, memBlock_t::pool, memBlockFoot_t::sentinel, Sys_Error(), memBlock_t::tagNum, memBlock_t::topSentinel, UFO_SIZE_T, and z_lock.

Referenced by _Mem_PoolDup(), _Mem_PoolStrDup(), and _Mem_ReAlloc().

◆ _Mem_AllocatedInPool()

bool _Mem_AllocatedInPool	(	memPool_t *	pool,
		const void *	pointer )

Searches a given pointer in all memory pool blocks

Parameters

pool	The pool to search the pointer in
pointer	The pointer to search in the pool

Definition at line 486 of file mem.cpp.

References memPool_t::blocks, Mem_BlockToPtr(), MEM_HASH, memBlock_t::next, and pointer.

Referenced by UI_FreeStringProperty(), and UI_ResetData().

◆ _Mem_ChangeTag()

uint32_t _Mem_ChangeTag	(	memPool_t *	pool,
		const int	tagFrom,
		const int	tagTo )

Definition at line 426 of file mem.cpp.

References memPool_t::blocks, MEM_HASH, and memBlock_t::next.

◆ _Mem_CheckGlobalIntegrity()

void _Mem_CheckGlobalIntegrity	(	const char *	fileName,
		const int	fileLine )

Definition at line 470 of file mem.cpp.

References _Mem_CheckPoolIntegrity(), i, memPool_t::inUse, m_numPools, and m_poolList.

◆ _Mem_CheckPoolIntegrity()

void _Mem_CheckPoolIntegrity	(	memPool_t *	pool,
		const char *	fileName,
		const int	fileLine )

static

Definition at line 445 of file mem.cpp.

References _Mem_CheckSentinels(), memPool_t::blockCount, memPool_t::blocks, memPool_t::byteCount, Mem_BlockRawSize(), MEM_HASH, memBlock_t::next, and Sys_Error().

Referenced by _Mem_CheckGlobalIntegrity().

◆ _Mem_CheckSentinels()

void _Mem_CheckSentinels	(	memBlock_t *const	mem,
		const char *	fileName,
		const int	fileLine )

static

Definition at line 183 of file mem.cpp.

References memBlock_t::allocFile, memBlock_t::allocLine, memBlock_t::botSentinel, Mem_BlockToFooter(), MEM_FOOT_SENTINEL, MEM_HEAD_SENTINEL_BOT, MEM_HEAD_SENTINEL_TOP, memPool_t::name, memBlock_t::pool, Sys_Error(), and memBlock_t::topSentinel.

Referenced by _Mem_CheckPoolIntegrity(), _Mem_Free(), and _Mem_ReAlloc().

◆ _Mem_CreatePool()

memPool_t * _Mem_CreatePool	(	const char *	name,
		const char *	fileName,
		const int	fileLine )

See also: _Mem_DeletePool

Definition at line 103 of file mem.cpp.

References memPool_t::blockCount, memPool_t::blocks, memPool_t::byteCount, Com_Printf(), memPool_t::createFile, memPool_t::createLine, i, memPool_t::inUse, m_numPools, m_poolList, Mem_FindPool(), MEM_HASH, MEM_MAX_POOLCOUNT, MEM_MAX_POOLNAME, memPool_t::name, name, Q_strncpyz(), and Sys_Error().

◆ _Mem_DeletePool()

void _Mem_DeletePool	(	memPool_t *	pool,
		const char *	fileName,
		const int	fileLine )

See also: _Mem_CreatePool; _Mem_FreePool

Definition at line 146 of file mem.cpp.

References _Mem_FreePool(), memPool_t::inUse, and memPool_t::name.

◆ _Mem_Free()

void _Mem_Free	(	void *	ptr,
		const char *	fileName,
		const int	fileLine )

See also: _Mem_FreePool

Definition at line 204 of file mem.cpp.

References _Mem_CheckSentinels(), memPool_t::blockCount, memPool_t::blocks, memPool_t::byteCount, Mem_BlockRawSize(), MEM_HASH, Mem_PtrToBlock(), memBlock_t::next, memBlock_t::pool, and z_lock.

Referenced by _Mem_FreePool(), _Mem_FreeTag(), _Mem_ReAlloc(), FS_FreeFile(), and SV_MemFree().

◆ _Mem_FreePool()

void _Mem_FreePool	(	memPool_t *	pool,
		const char *	fileName,
		const int	fileLine )

Free all items within a pool.

See also: _Mem_CreatePool; _Mem_DeletePool

Definition at line 262 of file mem.cpp.

References _Mem_Free(), memPool_t::blockCount, memPool_t::blocks, memPool_t::byteCount, Mem_BlockToPtr(), and MEM_HASH.

Referenced by _Mem_DeletePool().

◆ _Mem_FreeTag()

void _Mem_FreeTag	(	memPool_t *	pool,
		const int	tagNum,
		const char *	fileName,
		const int	fileLine )

Free memory blocks assigned to a specified tag within a pool.

Definition at line 243 of file mem.cpp.

References _Mem_Free(), memPool_t::blocks, Mem_BlockToPtr(), and MEM_HASH.

Referenced by SV_FreeTags().

◆ _Mem_PoolDup()

void * _Mem_PoolDup	(	const void *	in,
		size_t	size,
		memPool_t *	pool,
		const int	tagNum,
		const char *	fileName,
		const int	fileLine )

Definition at line 389 of file mem.cpp.

References _Mem_Alloc().

◆ _Mem_PoolSize()

uint32_t _Mem_PoolSize ( memPool_t * pool )

Parameters

[in] pool The pool to get the size from

Definition at line 418 of file mem.cpp.

References memPool_t::byteCount.

◆ _Mem_PoolStrDup()

char * _Mem_PoolStrDup	(	const char *	in,
		memPool_t *	pool,
		const int	tagNum,
		const char *	fileName,
		const int	fileLine )

No need to null terminate the extra spot because Mem_Alloc returns zero-filled memory.

Parameters

[in]	in	String to store in the given pool
[in]	pool	The pool to allocate the memory in
[in]	tagNum
[in]	fileName	The filename where this function was called from
[in]	fileLine	The line where this function was called from

Definition at line 407 of file mem.cpp.

References _Mem_Alloc().

Referenced by _Mem_PoolStrDupTo().

◆ _Mem_PoolStrDupTo()

char * _Mem_PoolStrDupTo	(	const char *	in,
		char **	out,
		memPool_t *	pool,
		const int	tagNum,
		const char *	fileName,
		const int	fileLine )

Saves a string to client hunk.

Parameters

[in]	in	String to store in the given pool
[out]	out	The location where you want the pool pointer to be stored
[in]	pool	The pool to allocate the memory in
[in]	tagNum
[in]	fileName	The filename where this function was called from
[in]	fileLine	The line where this function was called from