glue_memory.c File Reference

Implement the system dependend memory functions. More...

#include <stdlib.h>
#include <string.h>
#include "stb_os.h"
#include "glue_debug.h"
#include "glue_memory.h"

Go to the source code of this file.

Classes
struct	s_strings_block

Macros
#define	MallocFunc   STB_MemAlloc
#define	FreeFunc   STB_MemFree
#define	MAX_BLK_STRS   0x80 /* 128 memory blocks */
#define	VTINY_BITS   2
#define	MIGIT_BITS   3
#define	SMALL_BITS   4
#define	MEDUM_BITS   5
#define	LARGE_BITS   6
#define	STR_DATA_SIZE(bz)   (MAX_BLK_STRS << bz)
#define	STR_BLCK_SIZE(bz)   STR_DATA_SIZE(bz) + sizeof(S_STRINGS_BLOCK)
#define	CONTROL_SIZE   (MAX_BLK_STRS >> 3)
#define	BlkStrFree(head, bz, data)
#define	theMemSize   size
#define	BlkStrAlloc(bk, bz, ln)   BlkStrAlloc(bk, bz)

Typedefs
typedef struct s_strings_block	S_STRINGS_BLOCK

Functions
void	MHEG5freeMemFunc (void *what)
	Free some memory allocated by a call to MHEG5getMemFunc. More...
void *	MHEG5getMemFunc (int size)
	Allocate a block of memory from the free pool. This function should be called using the macro MHEG5getMem. This ensures that the callingFunction parameter is only passed in when MHEG5LOG is defined. More...
void	STR_Shutdown (void)
void	STR_TidyUp (void)
unsigned char *	STR_DataAlloc (unsigned int len)
void	STR_DataFree (unsigned char *data, unsigned int len)
void	MHG_DebugMemStats (int line)
BOOLEAN	MH5GlueMemoryInitialise (void)
void	MH5GlueMemoryTerminate (void)
S_STRING	MH5GlueStringCopy (S_STRING source)
S_STRING	MH5GlueStringConcat (S_STRING src1, S_STRING src2)
S_STRING	MH5GlueStringAlloc (U32BIT size)
S_STRING	MH5GlueStringCreate (U32BIT size, U8BIT *data)
void	MH5GlueStringFree (S_STRING *pStr)

Variables
S_STRINGS_BLOCK *	vtiny_strmem_head = NULL
S_STRINGS_BLOCK *	migit_strmem_head = NULL
S_STRINGS_BLOCK *	small_strmem_head = NULL
S_STRINGS_BLOCK *	medum_strmem_head = NULL
S_STRINGS_BLOCK *	large_strmem_head = NULL

Detailed Description

Implement the system dependend memory functions.

Date

05/02/2002

Author

R.Freeman

Definition in file glue_memory.c.

Macro Definition Documentation

#define BlkStrAlloc	(		bk,
			bz,
			ln
	)		BlkStrAlloc(bk, bz)

Definition at line 544 of file glue_memory.c.

#define BlkStrFree	(		head,
			bz,
			data
	)

Value:

{  S_STRINGS_BLOCK *pBlk = head; \
      do { \
         unsigned char *blk_data = (unsigned char *)pBlk + sizeof(S_STRINGS_BLOCK); \
         if (data >= blk_data \
             && data < blk_data + STR_DATA_SIZE(bz)) \
         {  int tmp; \
            tmp = (data - blk_data) >> bz; \
            pBlk->control[tmp >> 3] &= (U8BIT) ~(1 << (tmp & 7)); \
            break; \
         } \
         pBlk = pBlk->next; \
      } while (pBlk != NULL); \
      if (pBlk == NULL) { TRACE(TERROR, ("Not freed %x", data)) } \
   }

Definition at line 52 of file glue_memory.c.

#define CONTROL_SIZE   (MAX_BLK_STRS >> 3)

Definition at line 50 of file glue_memory.c.

#define FreeFunc   STB_MemFree

Definition at line 39 of file glue_memory.c.

#define LARGE_BITS   6

Definition at line 47 of file glue_memory.c.

#define MallocFunc   STB_MemAlloc

Definition at line 38 of file glue_memory.c.

#define MAX_BLK_STRS   0x80 /* 128 memory blocks */

Definition at line 42 of file glue_memory.c.

#define MEDUM_BITS   5

Definition at line 46 of file glue_memory.c.

#define MIGIT_BITS   3

Definition at line 44 of file glue_memory.c.

#define SMALL_BITS   4

Definition at line 45 of file glue_memory.c.

#define STR_BLCK_SIZE

(

bz

)

STR_DATA_SIZE(bz) + sizeof(S_STRINGS_BLOCK)

Definition at line 49 of file glue_memory.c.

#define STR_DATA_SIZE

(

bz

)

(MAX_BLK_STRS << bz)

Definition at line 48 of file glue_memory.c.

#define theMemSize   size

#define VTINY_BITS   2

Definition at line 43 of file glue_memory.c.

Typedef Documentation

typedef struct s_strings_block S_STRINGS_BLOCK

Function Documentation

BOOLEAN MH5GlueMemoryInitialise

(

void

)

Definition at line 807 of file glue_memory.c.

void MH5GlueMemoryTerminate

(

void

)

Definition at line 830 of file glue_memory.c.

S_STRING MH5GlueStringAlloc

(

U32BIT

size

)

Definition at line 924 of file glue_memory.c.

S_STRING MH5GlueStringConcat	(	S_STRING	src1,
		S_STRING	src2
	)

Definition at line 881 of file glue_memory.c.

S_STRING MH5GlueStringCopy

(

S_STRING

source

)

Definition at line 847 of file glue_memory.c.

S_STRING MH5GlueStringCreate	(	U32BIT	size,
		U8BIT *	data
	)

Definition at line 956 of file glue_memory.c.

void MH5GlueStringFree

(

S_STRING *

pStr

)

Definition at line 986 of file glue_memory.c.

void MHEG5freeMemFunc

(

void *

what

)

Free some memory allocated by a call to MHEG5getMemFunc.

Parameters

what	Pointer to allocated memory.

Returns

void

Definition at line 190 of file glue_memory.c.

void* MHEG5getMemFunc

(

int

size

)

Allocate a block of memory from the free pool. This function should be called using the macro MHEG5getMem. This ensures that the callingFunction parameter is only passed in when MHEG5LOG is defined.

Parameters

callingFunction	Pointer to the calling function (only when MHEG5LOG is defined).
size	Size in bytes of the memory region to allocate.

Returns

Pointer to allocated memory, or NULL if allocation fails.

Definition at line 291 of file glue_memory.c.

void MHG_DebugMemStats

(

int

line

)

Definition at line 708 of file glue_memory.c.

unsigned char* STR_DataAlloc

(

unsigned int

len

)

Definition at line 596 of file glue_memory.c.

void STR_DataFree	(	unsigned char *	data,
		unsigned int	len
	)

Definition at line 668 of file glue_memory.c.

void STR_Shutdown

(

void

)

Definition at line 497 of file glue_memory.c.

void STR_TidyUp

(

void

)

Definition at line 533 of file glue_memory.c.

Variable Documentation

S_STRINGS_BLOCK* large_strmem_head = NULL

Definition at line 101 of file glue_memory.c.

S_STRINGS_BLOCK* medum_strmem_head = NULL

Definition at line 100 of file glue_memory.c.

S_STRINGS_BLOCK* migit_strmem_head = NULL

Definition at line 98 of file glue_memory.c.

S_STRINGS_BLOCK* small_strmem_head = NULL

Definition at line 99 of file glue_memory.c.

S_STRINGS_BLOCK* vtiny_strmem_head = NULL

Definition at line 97 of file glue_memory.c.