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 1 /******************************************************************************
 2 *
 3 * Copyright (C) 2006, The Gentee Group. All rights reserved. 
 4 * This file is part of the Gentee open source project - http://www.gentee.com. 
 5 * 
 6 * THIS FILE IS PROVIDED UNDER THE TERMS OF THE GENTEE LICENSE ("AGREEMENT"). 
 7 * ANY USE, REPRODUCTION OR DISTRIBUTION OF THIS FILE CONSTITUTES RECIPIENTS 
 8 * ACCEPTANCE OF THE AGREEMENT.
 9 *
10 * ID: memory 18.10.06 0.0.A.
11 *
12 * Author: Alexey Krivonogov
13 *
14 * Summary: This file provides functionality for memory management.
15 *
16 ******************************************************************************/
17 
18 #ifndef _MEMORY_
19 #define _MEMORY_
20 
21    #ifdef __cplusplus               
22       extern "C" {                 
23    #endif // __cplusplus      
24 
25 #include "types.h"
26 
27 /*--------------------------------------------------------------------------
28 * Defines
29 */
30 #define MEM_EDGE       0xFFFF     // Alloc from heap if the memory size 
31                                   // is less or equal than MEM_EDGE 
32 #define MEM_HEAPSIZE   0x40000    // The minimum size of the heap
33 
34 typedef struct _heap
35 {
36    pvoid   ptr;          // Pointer to the heap memory
37    puint   chain;        // Array of ABC_COUNT free chains
38    uint    size;         // The summary memory size
39    uint    remain;       // The remain size of the heap
40    uint    free;         // The size of free blocks
41 } heap, * pheap;
42 
43 typedef struct memory
44 {
45    pheap   heaps;        // Array of ABC_COUNT heaps
46    uint    last;         // The number of the latest active heap
47    puint   sid;          // Array of ABC_COUNT limits of block sizes
48 } memory;
49  
50 extern pubyte _lower;
51 extern pubyte _bin;
52 extern pubyte _hex;
53 extern pubyte _dec;
54 extern pubyte _name;
55 
56 /*--------------------------------------------------------------------------
57 The each memory block begins two bytes.
58 1. The number of heap ( from 0 to MAX_BYTE ). 
59 2. The id of block size. The block doesn't belong to any heap if it equals 
60 MAX_BYTE. 
61 If the block is free then it contains the next free block with the same id.
62 */
63 //--------------------------------------------------------------------------
64 
65 pvoid  DLL_EXPORT STDCALL mem_alloc( uint size );
66 pvoid  STDCALL mem_allocz( uint size );
67 pvoid  DLL_EXPORT STDCALL mem_copy( pvoid dest, pvoid src, uint len );
68 void   STDCALL mem_copyui( puint dest, puint src, uint len );
69 uint   DLL_EXPORT STDCALL mem_copyuntilzero( pubyte dest, pubyte src  );
70 uint   STDCALL mem_deinit( void );
71 uint   DLL_EXPORT STDCALL mem_free( pvoid ptr );
72 uint   STDCALL mem_getsize( pvoid ptr );
73 uint   STDCALL mem_init( void );
74 uint   STDCALL mem_index( pubyte dest, uint number );
75 uint   STDCALL mem_iseqzero( pvoid dest, pvoid src );
76 uint   DLL_EXPORT STDCALL mem_len( pvoid data );
77 uint   STDCALL mem_lensh( pvoid data );
78 void   STDCALL mem_move( pvoid dest, pvoid src, uint len );
79 pvoid  DLL_EXPORT STDCALL mem_zero( pvoid dest, uint len );
80 void   STDCALL mem_zeroui( puint dest, uint len );
81 int    STDCALL mem_cmp( pvoid dest, pvoid src, uint len );
82 int    DLL_EXPORT STDCALL mem_cmpign( pvoid dest, pvoid src, uint len );
83 void   STDCALL mem_swap( pubyte left, pubyte right, uint len );
84 //uint STDCALL memstat();
85 //extern uint  bufnum;
86 
87 //--------------------------------------------------------------------------
88 
89    #ifdef __cplusplus              
90       }                            
91    #endif // __cplusplus
92 
93 #endif // _MEMORY_