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 /* Private Pool structure */
  34 struct Pool
  35 {
  36     struct MinList PuddleList;
  37     ULONG Requirements;
  38     ULONG PuddleSize;
  39 };
  40
  41 struct ProtectedPool
  42 {
  43     struct Pool            pool;
  44     struct SignalSemaphore sem;
  45 };
  46
  47 struct Block
  48 {
  49     struct MinNode Node;
  50     ULONG Size;
  51 };
  52
  53 struct checkMemHandlersState
  54 {
  55     struct Node           *cmhs_CurNode;
  56     struct MemHandlerData  cmhs_Data;
  57 };
  58
  59 struct TraceLocation;
  60
  61 struct MemHeader *FindMem(APTR address, struct ExecBase *SysBase);
  62 APTR stdAlloc(struct MemHeader *mh, IPTR byteSize, ULONG requirements, struct TraceLocation *loc, struct ExecBase *SysBase);
  63 void stdDealloc(struct MemHeader *freeList, APTR memoryBlock, IPTR byteSize, struct TraceLocation *loc, struct ExecBase *SysBase);
  64
  65 APTR InternalAllocAbs(APTR location, IPTR byteSize, struct ExecBase *SysBase);
  66 void InternalFreeMem(APTR location, IPTR byteSize, struct TraceLocation *loc, struct ExecBase *SysBase);
  67 APTR AllocMemHeader(IPTR size, ULONG flags, struct TraceLocation *loc, struct ExecBase *SysBase);
  68 void FreeMemHeader(APTR addr, struct TraceLocation *loc, struct ExecBase *SysBase);
  69
  70 APTR InternalAllocPooled(APTR poolHeader, IPTR memSize, ULONG flags, struct TraceLocation *loc, struct ExecBase *SysBase);
  71 void InternalFreePooled(APTR memory, IPTR memSize, struct TraceLocation *loc, struct ExecBase *SysBase);
  72
  73 ULONG checkMemHandlers(struct checkMemHandlersState *cmhs, struct ExecBase *SysBase);
  74
  75 APTR nommu_AllocMem(IPTR byteSize, ULONG flags, struct TraceLocation *loc, struct ExecBase *SysBase);
  76 APTR nommu_AllocAbs(APTR location, IPTR byteSize, struct ExecBase *SysBase);
  77 void nommu_FreeMem(APTR memoryBlock, IPTR byteSize, struct TraceLocation *loc, struct ExecBase *SysBase);
  78 IPTR nommu_AvailMem(ULONG attributes, struct ExecBase *SysBase);
  79
  80 #define BLOCK_TOTAL \
  81 ((sizeof(struct Block)+AROS_WORSTALIGN-1)&~(AROS_WORSTALIGN-1))
  82
  83 #endif