rom/exec/memory.h

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang:
   7 */
   8 #ifndef _MEMORY_H_
   9 #define _MEMORY_H_
  10
  11 #  include <aros/debug.h>
  12 #include <exec/lists.h>
  13 #include <exec/semaphores.h>
  14 #include <exec/memory.h>
  15 #include <stddef.h>
  16
  17 #define RTPOTx4(a)      ((a)>2?4:(a)>1?2:1)
  18
  19 #define RTPOTx10(a)     ((a)>=4?RTPOTx4(((a)+3)/4)*4:RTPOTx4(a))
  20
  21 #define RTPOTx100(a)    \
  22 ((a)>=0x10?RTPOTx10(((a)+0xf)/0x10)*0x10:RTPOTx10(a))
  23
  24 #define RTPOTx10000(a)  \
  25 ((a)>=0x100?RTPOTx100(((a)+0xff)/0x100)*0x100:RTPOTx100(a))
  26
  27 #define RTPOTx100000000(a)      \
  28 ((a)>=0x10000?RTPOTx10000(((a)+0xffff)/0x10000)*0x10000:RTPOTx10000(a))
  29
  30 #define ROUNDUP_TO_POWER_OF_TWO(a)      RTPOTx100(a)
  31
  32 /* Some defines for the memory handling functions. */
  33
  34 /* This is for the alignment of memchunk structures. */
  35 #define MEMCHUNK_TOTAL  \
  36 ROUNDUP_TO_POWER_OF_TWO(AROS_WORSTALIGN>sizeof(struct MemChunk)? \
  37 AROS_WORSTALIGN:sizeof(struct MemChunk))
  38
  39 /* This allows to take the end of the MemHeader as the first MemChunk. */
  40 #define MEMHEADER_TOTAL \
  41 ((sizeof(struct MemHeader)+MEMCHUNK_TOTAL-1)&~(MEMCHUNK_TOTAL-1))
  42
  43 /* Private Pool structure */
  44 struct Pool
  45 {
  46     struct MinList PuddleList;
  47     struct MinList BlockList;
  48     ULONG Requirements;
  49     ULONG PuddleSize;
  50     ULONG ThreshSize;
  51 };
  52
  53 struct ProtectedPool
  54 {
  55     struct Pool            pool;
  56     struct SignalSemaphore sem;
  57 };
  58
  59 struct Block
  60 {
  61     struct MinNode Node;
  62     ULONG Size;
  63 };
  64
  65 #if AROS_MUNGWALL_DEBUG
  66
  67 #define MUNGWALL_HEADER_ID 0x1ADEBCA1
  68
  69 /* This struct must not be bigger than MUNGWALLHEADER_SIZE!! */
  70
  71 struct MungwallHeader
  72 {
  73     union
  74     {
  75         struct
  76         {
  77             struct  MinNode     node;
  78             ULONG               magicid;
  79             ULONG               allocsize;
  80         } s;
  81         struct
  82         {
  83             UBYTE               blub[MUNGWALLHEADER_SIZE];
  84         } b;
  85     } u;
  86 };
  87
  88 #define mwh_node        u.s.node
  89 #define mwh_magicid     u.s.magicid
  90 #define mwh_allocsize   u.s.allocsize
  91
  92 #endif
  93
  94
  95 #define BLOCK_TOTAL \
  96 ((sizeof(struct Block)+AROS_WORSTALIGN-1)&~(AROS_WORSTALIGN-1))
  97
  98 #endif