| 1 |
/* |
| 2 |
* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
| 3 |
* |
| 4 |
* Copyright (C) 2002 by the past and present ircd coders, and others. |
| 5 |
* |
| 6 |
* This program is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* This program is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| 19 |
* USA |
| 20 |
*/ |
| 21 |
|
| 22 |
/*! \file balloc.h |
| 23 |
* \brief A block allocator |
| 24 |
* \version $Id$ |
| 25 |
* \todo Get rid of all typedefs in this file |
| 26 |
*/ |
| 27 |
|
| 28 |
#ifndef INCLUDED_balloc_h |
| 29 |
#define INCLUDED_balloc_h |
| 30 |
|
| 31 |
#include "config.h" |
| 32 |
#include "client.h" |
| 33 |
#include "tools.h" |
| 34 |
#include "memory.h" |
| 35 |
#include "ircd_defs.h" |
| 36 |
|
| 37 |
|
| 38 |
/*! \brief Block contains status information for |
| 39 |
* an allocated block in our heap. |
| 40 |
*/ |
| 41 |
struct Block |
| 42 |
{ |
| 43 |
int freeElems; /*!< Number of available elems */ |
| 44 |
size_t alloc_size; /*!< Size of data space for each block */ |
| 45 |
struct Block* next; /*!< Next in our chain of blocks */ |
| 46 |
void* elems; /*!< Points to allocated memory */ |
| 47 |
dlink_list free_list; /*!< Chain of free memory blocks */ |
| 48 |
}; |
| 49 |
|
| 50 |
typedef struct Block Block; |
| 51 |
|
| 52 |
struct MemBlock |
| 53 |
{ |
| 54 |
dlink_node self; /*!< Node for linking into free_list */ |
| 55 |
Block *block; /*!< Which block we belong to */ |
| 56 |
}; |
| 57 |
typedef struct MemBlock MemBlock; |
| 58 |
|
| 59 |
/*! \brief BlockHeap contains the information for the root node of the |
| 60 |
* memory heap. |
| 61 |
*/ |
| 62 |
struct BlockHeap |
| 63 |
{ |
| 64 |
size_t elemSize; /*!< Size of each element to be stored */ |
| 65 |
int elemsPerBlock; /*!< Number of elements per block */ |
| 66 |
int blocksAllocated; /*!< Number of blocks allocated */ |
| 67 |
int freeElems; /*!< Number of free elements */ |
| 68 |
Block* base; /*!< Pointer to first block */ |
| 69 |
const char *name; /*!< Name of the heap */ |
| 70 |
struct BlockHeap *next; /*!< Pointer to next heap */ |
| 71 |
}; |
| 72 |
|
| 73 |
typedef struct BlockHeap BlockHeap; |
| 74 |
|
| 75 |
|
| 76 |
extern int BlockHeapFree(BlockHeap *, void *); |
| 77 |
extern void * BlockHeapAlloc(BlockHeap *); |
| 78 |
|
| 79 |
extern BlockHeap* BlockHeapCreate(const char *const, size_t, int); |
| 80 |
extern int BlockHeapDestroy(BlockHeap *); |
| 81 |
extern void initBlockHeap(void); |
| 82 |
extern void block_heap_report_stats(struct Client *); |
| 83 |
#endif /* INCLUDED_balloc_h */ |
