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Memory.i
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1990-08-27
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{
Memory.i for PCQ Pascal
}
{$I "Include:Exec/Nodes.i"}
type
{***** MemChunk ***************************************************}
MemChunk = record
mc_Next : ^MemChunk; { pointer to next chunk }
mc_Bytes : Integer; { chunk byte size }
end;
MemChunkPtr = ^MemChunk;
{***** MemHeader **************************************************}
MemHeader = record
mh_Node : Node;
mh_Attributes : Short; { characteristics of this region }
mh_First : MemChunkPtr; { first free region }
mh_Lower : Address; { lower memory bound }
mh_Upper : Address; { upper memory bound+1 }
mh_Free : Integer; { total number of free bytes }
end;
MemHeaderPtr = ^MemHeader;
{***** MemEntry ***************************************************}
MemEntry = record
meu_ReqsAddr : Integer; { the AllocMem requirements or addr }
me_Length : Integer; { the length of this memory region }
end;
MemEntryPtr = ^MemEntry;
{***** MemList ****************************************************}
MemList = record
ml_Node : Node;
ml_NumEntries : Short; { number of entries in this struct }
ml_ME : Array [0..0] of MemEntry; { the first entry }
end;
MemListPtr = ^MemList;
{----- Memory Requirement Types ---------------------------}
const
MEMF_PUBLIC = 1;
MEMF_CHIP = 2;
MEMF_FAST = 4;
MEMF_CLEAR = $10000;
MEMF_LARGEST = $20000;
MEM_BLOCKSIZE = 8;
MEM_BLOCKMASK = 7;
Procedure AddMemList(size, attr, pri : Integer; base : Address; name : String);
External;
Function AllocAbs(bytesize : Integer; location : Address) : Address;
External;
Function Allocate(mem : MemHeaderPtr; bytesize : Integer) : Address;
External;
Function AllocEntry(mem : MemListPtr) : MemListPtr;
External;
Function AllocMem(bytesize : Integer; reqs : Integer) : Address;
External;
Function AvailMem(attr : Integer) : Integer;
External;
Procedure CopyMem(source, dest : Address; size : Integer);
External;
Procedure CopyMemQuick(source, dest : Address; size : Integer);
External;
Procedure Deallocate(header : MemHeaderPtr; block : Address; size : Integer);
External;
Procedure FreeEntry(memList : MemListPtr);
External;
Procedure FreeMem(memBlock : Address; size : Integer);
External;
Procedure InitStruct(table, memory : Address; size : Integer);
External;
Function TypeOfMem(mem : Address) : Integer;
External;