1 line
6.2 KiB
Plaintext
Executable File
1 line
6.2 KiB
Plaintext
Executable File
;
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; HeapPrivate.equ
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;
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; Heap memory managment module equates
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;
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; Copyright © 1989 Claris Corporation
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;
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; 6/8/89 Kevin A. Watts
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;
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;--------------------------------------------------------------
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; Conditional assembly flags - now defined in makefile
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;ZeroInit equ 1 ; initialize handles to zero?
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;ErrorCheck equ 2 ; error checking code?
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;Verbose equ 0 ; verbose? (1=WordBox,2=AlertBox)
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;VerboseErrors equ 0 ; alerts on normal errors?
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;Debug equ 0 ; debugging?
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;Profile equ 0 ; profiling?
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;Profile equ 's' ; profiling?
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;Squeezing equ 1 ; SqueezeHeap?
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;GrowBlocks equ 1 ; grow blocks in place?
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;HeapIO equ 3 ; 1 = H_WriteHeap, 2 = H_ReadHeap
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;DriverSupport equ 1 ; Driver creation of zero page?
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;VariableDSegSize equ 1 ; Variable sized data segments?
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;VariableISegSize equ 0 ; Variable sized index segments?
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;UseLastResort equ 0 ; Use last resort allocation strategy?
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; DEBRK - debugging macro
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MACRO
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DEBRK
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IF Debug THEN
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brk
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ENDIF
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ENDM
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; DEBRK2 - debugging macro
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MACRO
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DEBRK2
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IF Debug OR ErrorCheck THEN
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brk
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ENDIF
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ENDM
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; DEBRK3 - debugging macro
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MACRO
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DEBRK3
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IF VerboseErrors THEN
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; brk
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ENDIF
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ENDM
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;--------------------------------------------------------------
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H_THIS_VERSION equ $71
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H_VERSION7 equ $70
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H_ISEG_SIZE equ $1000 ; 4K index segments (1K indices)
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H_DSEG_SIZE equ $4000 ; 16K data segments
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H_MIN_COMPACT equ (H_DSEG_SIZE/8) ; free space required before compact
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H_MIN_SQUEEZE equ 40 ; segments must have this must free space
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; to be a candidate for squeezing into
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H_LARGE_BLOCK_SIZE equ $1000 ; blocks ³ 4K will be allocated as handles
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H_LARGE_BLOCK_FLAG equ $FF00
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H_LARGE_BLOCK_FLAG2 equ $EE00
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H_FREE_INDEX_FLAG equ $A000
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H_BLOCK_OVERHEAD equ 2 ; size of overhead in each heap block
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; verify that certain variables are correct in relation to each other
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IF (H_LARGE_BLOCK_FLAG ² H_LARGE_BLOCK_FLAG2) OR (H_LARGE_BLOCK_FLAG2 ² H_FREE_INDEX_FLAG) OR (H_FREE_INDEX_FLAG < $8000) THEN
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AERROR 'Must have H_LARGE_BLOCK_FLAG > H_LARGE_BLOCK_FLAG2 > H_FREE_INDEX_FLAG ³ $8000'
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ENDIF
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IF (H_LARGE_BLOCK_FLAG MOD $100) 0 THEN
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AERROR 'H_LARGE_BLOCK_FLAG must have low byte = $00'
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ENDIF
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IF (H_LARGE_BLOCK_FLAG2 MOD $100) 0 THEN
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AERROR 'H_LARGE_BLOCK_FLAG2 must have low byte = $00'
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ENDIF
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IF (H_FREE_INDEX_FLAG MOD $1000) 0 THEN
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AERROR 'H_FREE_INDEX_FLAG must have low 3 nibbles = $000'
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ENDIF
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include 'Heap.equ'
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; -----------
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; H_HeaderRec equates
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H_Header equ H_HeaderRec.Header
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H_Version equ H_HeaderRec.Version
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H_HeaderPtr equ H_HeaderRec.HeaderPtr
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H_NumISegments equ H_HeaderRec.NumISegments
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H_NumDSegments equ H_HeaderRec.NumDSegments
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H_FreeIndex equ H_HeaderRec.FreeIndex
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H_EndIndex equ H_HeaderRec.EndIndex
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ZHEADER_SHORT_SIZE equ H_HeaderRec.ZHEADER_SHORT_SIZE
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H_FreeListArray equ H_HeaderRec.FreeListArray
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H_ISegHandleLo equ H_HeaderRec.ISegHandleLo
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H_ISegHandleHi equ H_HeaderRec.ISegHandleHi
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H_DSegHandleLo equ H_HeaderRec.DSegHandleLo
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H_DSegHandleHi equ H_HeaderRec.DSegHandleHi
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H_ISegPtrLo equ H_HeaderRec.ISegPtrLo
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H_ISegPtrHi equ H_HeaderRec.ISegPtrHi
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H_DSegPtrLo equ H_HeaderRec.DSegPtrLo
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H_DSegPtrHi equ H_HeaderRec.DSegPtrHi
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ZHEADER_SIZE equ H_HeaderRec.ZHEADER_SIZE
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H_FreeLists equ H_HeaderRec.FreeLists
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HANDLE_ARRAY equ H_HeaderRec.HANDLE_ARRAY
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;------------
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H_SegmentRec RECORD 0 ; Structure of a heap data segment
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SegFreeList DS.W H_N_FREE_LISTS ; free list heads for each block size
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SegSize DS.W 1 ; segment size
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SegEnd DS.W 1 ; offset to never used portion of segment
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SegFreeSpace DS.W 1 ; total free space in segment
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SegNumBlocks DS.W 1 ; number of blocks in segment
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DSEG_HDR_SIZE equ *
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SegData equ *
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ENDR ; H_Segment ----------------------
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; N.B. there is code that assumes that H_SegFreeList = 0
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H_SegFreeList equ H_SegmentRec.SegFreeList
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H_SegSize equ H_SegmentRec.SegSize
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H_SegEnd equ H_SegmentRec.SegEnd
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H_SegFreeSpace equ H_SegmentRec.SegFreeSpace
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H_SegNumBlocks equ H_SegmentRec.SegNumBlocks
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DSEG_HDR_SIZE equ H_SegmentRec.DSEG_HDR_SIZE
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; minimum allowable data segment size
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H_MIN_DSEG_SIZE equ H_LARGE_BLOCK_SIZE+DSEG_HDR_SIZE
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;------------
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H_BlockRec RECORD 0 ; Structure of a data block
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BlockSize DS.W 1 ; block size
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Data equ *
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ENDR ; H_Block ----------------------
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H_BlockSize equ H_BlockRec.BlockSize
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H_Data equ H_BlockRec.Data
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;------------
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; H_VariablesRec equates
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; 'Globals' - maintain value across heap calls
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H_ZPptr equ H_VariablesRec.H_ZPptr
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H_IsLocked equ H_VariablesRec.H_IsLocked
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H_MaxSegments equ H_VariablesRec.H_MaxSegments
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H_HeaderSize equ H_VariablesRec.H_HeaderSize
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H_DSegHOffsetLo equ H_VariablesRec.H_DSegHOffsetLo
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H_DSegHOffsetHi equ H_VariablesRec.H_DSegHOffsetHi
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H_ISegPOffsetLo equ H_VariablesRec.H_ISegPOffsetLo
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H_ISegPOffsetHi equ H_VariablesRec.H_ISegPOffsetHi
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H_DSegPOffsetLo equ H_VariablesRec.H_DSegPOffsetLo
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H_DSegPOffsetHi equ H_VariablesRec.H_DSegPOffsetHi
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; 'Locals' - not assumed to maintain value across heap calls
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BlockSize equ H_VariablesRec.BlockSize
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CopyHdr equ H_VariablesRec.CopyHdr
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DP equ H_VariablesRec.DP
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DataSize equ H_VariablesRec.DataSize
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EndPtr equ H_VariablesRec.EndPtr
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ErrorFlag equ H_VariablesRec.ErrorFlag
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FreeListOffset equ H_VariablesRec.FreeListOffset
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HasMoved equ H_VariablesRec.HasMoved
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Index equ H_VariablesRec.Index
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ISegPtr equ H_VariablesRec.ISegPtr
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SkipLastResort equ H_VariablesRec.SkipLastResort
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MaxFreeSeg equ H_VariablesRec.MaxFreeSeg
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MaxFreeSpace equ H_VariablesRec.MaxFreeSpace
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NewHeap equ H_VariablesRec.NewHeap
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Offset equ H_VariablesRec.Offset
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OldIndex equ H_VariablesRec.OldIndex
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OldPtr equ H_VariablesRec.OldPtr
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OldSize equ H_VariablesRec.OldSize
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Ptr equ H_VariablesRec.Ptr
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SegHandle equ H_VariablesRec.SegHandle
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Segment equ H_VariablesRec.Segment
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SegPtr equ H_VariablesRec.SegPtr
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SegSize equ H_VariablesRec.SegSize
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;------------
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IF H_LARGE_BLOCK_SIZE > (H_DSEG_SIZE-DSEG_HDR_SIZE) THEN
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AERROR 'Must have H_LARGE_BLOCK_SIZE ² (H_DSEG_SIZE-DSEG_HDR_SIZE)'
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ENDIF
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;--------------------------------------------------------------
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; Driver routines and globals
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IMPORT D_ReadHandle
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IMPORT D_WriteHandle
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IMPORT D_ReadHandle2
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IMPORT D_WriteHandle2
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IMPORT D_NeedHand
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IMPORT D_NeedHandle
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IMPORT D_GrowHandle
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IMPORT D_GrowLHandle
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;IMPORT D_ZeroBlock - done in Heap.equ for Driver:Init.aii
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IMPORT D_CheckPurge
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IMPORT D_AlertBox
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IMPORT D_WordBox
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IMPORT D_CloseWordBox
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IMPORT D_SystemHandle
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IMPORT D_TopModule
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