115 lines
4.5 KiB
C
115 lines
4.5 KiB
C
/*
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File: Zone.h
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Contains: Information needed by heap management routines, regardless of whether we
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are in 24-bit or 32-bit zone. Mode specific information is in Zone24.h
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and Zone32.h.
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Written by: Phil Goldman
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Copyright: © 1986-1991 by Apple Computer, Inc., all rights reserved.
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Change History (most recent first):
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<6> 4/9/91 DFH VL, #83672 : Added GetProcessMgrHiMaxBlock vector definitions.
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<5> 4/7/91 DFH gbm, WS#JC-PM-005 : Added MIN_PHYSICAL_SIZE_EITHER_MODE.
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<4> 3/14/91 DFH gbm,#82504, #82681, #83168, #83182, #83207: Removed
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GUARANTEED_SYSHEAP_FREE_CONTIGUOUS_SPACE.
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<3> 2/21/91 DFH dba,#82504, #82681, #83168, #83182, #83207: Added
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GetSystemHiFreeBytes vector. need to grow.
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<0> x/xx/86 PYG New Today.
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*/
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/* Macros for heap access */
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#define SIZEOF_ZONE_HEADER (sizeof(Zone) - sizeof(short))
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#define SIZEOF_24BIT_BLOCK_HEADER ((unsigned int) 8)
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#define SIZEOF_32BIT_BLOCK_HEADER ((unsigned int) 12)
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#define HEAP_FREE_SPACE(theZone) ((theZone)->zcbFree)
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#define FNoRvrAlloc (1<<5)
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#define ZONE_BYTES_PER_MP (8*1024)
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#define MIN_PHYSICAL_SIZE_EITHER_MODE ((unsigned int) 16)
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#define MIN_LOGICAL_SIZE ((unsigned int) 4)
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#define SIZEOF_SMALLEST_PTR_DATUM MIN_LOGICAL_SIZE
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#define MAX_LOGICAL_SIZE (0xFFFFFFF0)
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#define MINGROWTH ((unsigned int) 16)
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#define MAX_TOO_FEW_SYS_MPS ((unsigned int) 32)
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#define EXTRA_SLOP_FOR_NEXT_TIME (10*1024)
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/* maxSize that works both in 24-bit and 32-bit modes
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* NOTE: This must not be too big, since the memory manager automatically
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* adds the block header size to this value, which would cause it to wrap
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* to a small positive number.
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*/
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#define compactAll 0xFFFFFF00
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/* Typedef that zone files can share */
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typedef unsigned long FreeBlockAddr; /* address of free block */
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/* Function prototypes */
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typedef pascal long (*GZProcPtr)(long cbNeeded);
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pascal long ProcessMgr_GZProc_Glue(u_size cbNeeded)
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extern;
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pascal long ProcessMgrSysGZProc(u_size cbNeeded)
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extern;
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void MakeNonRelocatable24(Ptr *);
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void MakeNonRelocatable32(Ptr *);
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/* Function prototypes for vectored routines */
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typedef u_size (*zvr1Ptr) (Handle, Boolean *);
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typedef void (*zvr2Ptr) (THz pZone, u_size cbNeeded);
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typedef void (*zvr3Ptr) (THz oldZone, THz newZone);
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typedef long (*zvr4Ptr) (u_size cbNeeded);
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typedef Ptr (*zvr5Ptr) (Ptr ceilingPtr);
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typedef FreeBlockAddr (*zvr6Ptr) (u_size size, Ptr lockPtr);
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typedef long (*zvr7Ptr) (FreeBlockAddr pTopBlock);
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typedef FreeBlockAddr (*zvr8Ptr) (FreeBlockAddr pBlockHdr, u_size newSize);
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typedef FreeBlockAddr (*zvr9Ptr) (FreeBlockAddr pBlock, Handle *pHandle,u_size sizeNeeded, short sizeCorrection);
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typedef Ptr (*zvr10Ptr) (THz pZone);
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typedef u_size (*zvr11Ptr) (void);
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typedef u_size (*zvr12Ptr) (void);
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/* Macros to get vectored routines */
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#define GetProcessMgrLoFreeBytes (*vrGetProcessMgrLoFreeBytes)
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#define ExtendZone (*vrExtendZone)
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#define MoveZone (*vrMoveZone)
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#define ShrinkProcessMgrZone (*vrShrinkProcessMgrZone)
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#define GetLockPtr (*vrGetLockPtr)
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#define GetHighestLargeFreeBlock (*vrGetHighestLargeFreeBlock)
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#define GetTopBlockSize (*vrGetTopBlockSize)
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#define FreeTop (*vrFreeTop)
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#define ChipOffRelocFromFree (*vrChipOffRelocFromFree)
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#define ZoneMPBlockPtr (*vrZoneMPBlockPtr)
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#define GetSystemHiFreeBytes (*vrGetSystemHiFreeBytes)
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#define GetProcessMgrHiMaxBlock (*vrGetProcessMgrHiMaxBlock)
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/* Import the vectors */
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extern zvr1Ptr vrGetProcessMgrLoFreeBytes;
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extern zvr2Ptr vrExtendZone;
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extern zvr3Ptr vrMoveZone;
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extern zvr4Ptr vrShrinkProcessMgrZone;
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extern zvr5Ptr vrGetLockPtr;
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extern zvr6Ptr vrGetHighestLargeFreeBlock;
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extern zvr7Ptr vrGetTopBlockSize;
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extern zvr8Ptr vrFreeTop;
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extern zvr9Ptr vrChipOffRelocFromFree;
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extern zvr10Ptr vrZoneMPBlockPtr;
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extern zvr11Ptr vrGetSystemHiFreeBytes;
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extern zvr12Ptr vrGetProcessMgrHiMaxBlock;
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/* Import the non-vectored routines */
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extern void InitVectorTable24(void);
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extern void InitVectorTable32(void);
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/* Exports */
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void InitHeaps(void);
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pascal long MyGrowZone(unsigned long);
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u_size ProcessMgrMaxBlock(void);
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u_size StraddleBlockSize(u_size *, u_size *, Handle, Boolean *);
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void ReclaimSpaceIfSysHeapLow(Handle *);
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#define LogicalToPhysicalSize(size) (size) += (In32BitMode) ? SIZEOF_32BIT_BLOCK_HEADER : SIZEOF_24BIT_BLOCK_HEADER;
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#define PhysicalToLogicalSize(size) (size) -= (In32BitMode) ? SIZEOF_32BIT_BLOCK_HEADER : SIZEOF_24BIT_BLOCK_HEADER;
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