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 #if defined(__AROSEXEC_SMP__)
  17 #define MEM_LOCK        do { Forbid(); EXEC_SPINLOCK_LOCK(&PrivExecBase(SysBase)->MemListSpinLock, NULL, SPINLOCK_MODE_WRITE); } while(0)
  18 #define MEM_LOCK_SHARED do { Forbid(); EXEC_SPINLOCK_LOCK(&PrivExecBase(SysBase)->MemListSpinLock, NULL, SPINLOCK_MODE_READ); } while(0)
  19 #define MEM_UNLOCK      do { EXEC_SPINLOCK_UNLOCK(&PrivExecBase(SysBase)->MemListSpinLock); Permit(); } while(0)
  20 #else
  21 #if defined(__AROSEXEC_BROKENMEMLOCK__)
  22 #define MEM_LOCK        ObtainSemaphore(&PrivExecBase(SysBase)->MemListSem)
  23 #define MEM_LOCK_SHARED ObtainSemaphoreShared(&PrivExecBase(SysBase)->MemListSem)
  24 #define MEM_UNLOCK      ReleaseSemaphore(&PrivExecBase(SysBase)->MemListSem)
  25 #else
  26 #define MEM_LOCK        Forbid()
  27 #define MEM_LOCK_SHARED Forbid()
  28 #define MEM_UNLOCK      Permit()
  29 #endif
  30 #endif
  31
  32 #define POOL_MAGIC AROS_MAKE_ID('P','o','O','l')
  33
  34 /* Private Pool structure */
  35 struct Pool
  36 {
  37     struct MinList PuddleList;
  38     ULONG Requirements;
  39     ULONG PuddleSize;
  40     ULONG PoolMagic;
  41 };
  42
  43 struct ProtectedPool
  44 {
  45     struct Pool            pool;
  46     struct SignalSemaphore sem;
  47 };
  48
  49 struct Block
  50 {
  51     struct MinNode Node;
  52     ULONG Size;
  53 };
  54
  55 struct checkMemHandlersState
  56 {
  57     struct Node           *cmhs_CurNode;
  58     struct MemHandlerData  cmhs_Data;
  59 };
  60
  61 struct TraceLocation;
  62
  63 struct MemHeaderAllocatorCtx;
  64
  65 /* Returns existing or allocates new ctx */
  66 struct MemHeaderAllocatorCtx * mhac_GetSysCtx(struct MemHeader * mh, struct ExecBase * SysBase);
  67 void mhac_PoolMemHeaderSetup(struct MemHeader * mh, struct ProtectedPool * pool);
  68 ULONG mhac_GetCtxSize();
  69 /* Clears ctx if it already exists for a given MemHeader */
  70 void mhac_ClearSysCtx(struct MemHeader * mh, struct ExecBase * SysBase);
  71
  72 struct MemHeader *FindMem(APTR address, struct ExecBase *SysBase);
  73 APTR stdAlloc(struct MemHeader *mh, struct MemHeaderAllocatorCtx *mhac, IPTR byteSize, ULONG requirements, struct TraceLocation *loc, struct ExecBase *SysBase);
  74 void stdDealloc(struct MemHeader *freeList, struct MemHeaderAllocatorCtx *mhac, APTR memoryBlock, IPTR byteSize, struct TraceLocation *loc, struct ExecBase *SysBase);
  75
  76 APTR InternalAllocAbs(APTR location, IPTR byteSize, struct ExecBase *SysBase);
  77 void InternalFreeMem(APTR location, IPTR byteSize, struct TraceLocation *loc, struct ExecBase *SysBase);
  78 APTR AllocMemHeader(IPTR size, ULONG flags, struct TraceLocation *loc, struct ExecBase *SysBase);
  79 void FreeMemHeader(APTR addr, struct TraceLocation *loc, struct ExecBase *SysBase);
  80
  81 APTR InternalAllocPooled(APTR poolHeader, IPTR memSize, ULONG flags, struct TraceLocation *loc, struct ExecBase *SysBase);
  82 void InternalFreePooled(APTR poolHeader, APTR memory, IPTR memSize, struct TraceLocation *loc, struct ExecBase *SysBase);
  83
  84 ULONG checkMemHandlers(struct checkMemHandlersState *cmhs, struct ExecBase *SysBase);
  85
  86 APTR nommu_AllocMem(IPTR byteSize, ULONG flags, struct TraceLocation *loc, struct ExecBase *SysBase);
  87 APTR nommu_AllocAbs(APTR location, IPTR byteSize, struct ExecBase *SysBase);
  88 void nommu_FreeMem(APTR memoryBlock, IPTR byteSize, struct TraceLocation *loc, struct ExecBase *SysBase);
  89 IPTR nommu_AvailMem(ULONG attributes, struct ExecBase *SysBase);
  90
  91 #define PME_FREE_NO_CHUNK       1
  92 #define PME_FREE_INV_POOL       2
  93 #define PME_FREE_MXD_POOL       3
  94 #define PME_ALLOC_INV_POOL      4
  95 #define PME_DEL_POOL_INV_POOL   5
  96
  97 void PoolManagerAlert(ULONG code, ULONG flags, IPTR memSize, APTR memory, APTR poolHeaderMH, APTR poolHeader);
  98
  99 #define BLOCK_TOTAL \
 100 ((sizeof(struct Block)+AROS_WORSTALIGN-1)&~(AROS_WORSTALIGN-1))
 101
 102 #endif