rom/exec/memory.h

   1 /*
   2     Copyright © 1995-2011, 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 <exec/lists.h>
  12 #include <exec/semaphores.h>
  13 #include <exec/memory.h>
  14 #include <stddef.h>
  15
  16 /*
  17  * EXPERIMENTAL: use semaphore protection instead of Forbid()/Permit() for
  18  * system memory allocation routines.
  19  * In case of problems use definitions below.
  20  *
  21  * Many m68k programs assume forbid state won't get broken.
  22  */
  23 #ifndef __mc68000
  24 #define MEM_LOCK        ObtainSemaphore(&PrivExecBase(SysBase)->MemListSem)
  25 #define MEM_LOCK_SHARED ObtainSemaphoreShared(&PrivExecBase(SysBase)->MemListSem)
  26 #define MEM_UNLOCK      ReleaseSemaphore(&PrivExecBase(SysBase)->MemListSem)
  27 #else
  28 #define MEM_LOCK        Forbid()
  29 #define MEM_LOCK_SHARED Forbid()
  30 #define MEM_UNLOCK      Permit()
  31 #endif
  32
  33 #define POOL_MAGIC AROS_MAKE_ID('P','o','O','l')
  34
  35 /* Private Pool structure */
  36 struct Pool
  37 {
  38     struct MinList PuddleList;
  39     ULONG Requirements;
  40     ULONG PuddleSize;
  41     ULONG PoolMagic;
  42 };
  43
  44 struct ProtectedPool
  45 {
  46     struct Pool            pool;
  47     struct SignalSemaphore sem;
  48 };
  49
  50 struct Block
  51 {
  52     struct MinNode Node;
  53     ULONG Size;
  54 };
  55
  56 struct checkMemHandlersState
  57 {
  58     struct Node           *cmhs_CurNode;
  59     struct MemHandlerData  cmhs_Data;
  60 };
  61
  62 struct TraceLocation;
  63
  64 struct MemHeaderAllocatorCtx;
  65
  66 /* Returns existing or allocates new ctx */
  67 struct MemHeaderAllocatorCtx * mhac_GetSysCtx(struct MemHeader * mh, struct ExecBase * SysBase);
  68 void mhac_PoolMemHeaderSetup(struct MemHeader * mh, struct ProtectedPool * pool);
  69 ULONG mhac_GetCtxSize();
  70 /* Clears ctx if it already exists for a given MemHeader */
  71 void mhac_ClearSysCtx(struct MemHeader * mh, struct ExecBase * SysBase);
  72
  73 struct MemHeader *FindMem(APTR address, struct ExecBase *SysBase);
  74 APTR stdAlloc(struct MemHeader *mh, struct MemHeaderAllocatorCtx *mhac, IPTR byteSize, ULONG requirements, struct TraceLocation *loc, struct ExecBase *SysBase);
  75 void stdDealloc(struct MemHeader *freeList, struct MemHeaderAllocatorCtx *mhac, APTR memoryBlock, IPTR byteSize, struct TraceLocation *loc, struct ExecBase *SysBase);
  76
  77 APTR InternalAllocAbs(APTR location, IPTR byteSize, struct ExecBase *SysBase);
  78 void InternalFreeMem(APTR location, IPTR byteSize, struct TraceLocation *loc, struct ExecBase *SysBase);
  79 APTR AllocMemHeader(IPTR size, ULONG flags, struct TraceLocation *loc, struct ExecBase *SysBase);
  80 void FreeMemHeader(APTR addr, struct TraceLocation *loc, struct ExecBase *SysBase);
  81
  82 APTR InternalAllocPooled(APTR poolHeader, IPTR memSize, ULONG flags, struct TraceLocation *loc, struct ExecBase *SysBase);
  83 void InternalFreePooled(APTR poolHeader, APTR memory, IPTR memSize, struct TraceLocation *loc, struct ExecBase *SysBase);
  84
  85 ULONG checkMemHandlers(struct checkMemHandlersState *cmhs, struct ExecBase *SysBase);
  86
  87 APTR nommu_AllocMem(IPTR byteSize, ULONG flags, struct TraceLocation *loc, struct ExecBase *SysBase);
  88 APTR nommu_AllocAbs(APTR location, IPTR byteSize, struct ExecBase *SysBase);
  89 void nommu_FreeMem(APTR memoryBlock, IPTR byteSize, struct TraceLocation *loc, struct ExecBase *SysBase);
  90 IPTR nommu_AvailMem(ULONG attributes, struct ExecBase *SysBase);
  91
  92 #define PME_FREE_NO_CHUNK       1
  93 #define PME_FREE_INV_POOL       2
  94 #define PME_FREE_MXD_POOL       3
  95 #define PME_ALLOC_INV_POOL      4
  96 #define PME_DEL_POOL_INV_POOL   5
  97
  98 void PoolManagerAlert(ULONG code, ULONG flags, IPTR memSize, APTR memory, APTR poolHeaderMH, APTR poolHeader);
  99
 100 #define BLOCK_TOTAL \
 101 ((sizeof(struct Block)+AROS_WORSTALIGN-1)&~(AROS_WORSTALIGN-1))
 102
 103 #endif