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101 lines
3.4 KiB
PHP
101 lines
3.4 KiB
PHP
{
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This file is part of the Free Pascal run time library.
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Copyright (c) 1999-2000 by the Free Pascal development team
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Heap manager interface section
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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**********************************************************************}
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{ Memorymanager }
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type
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TFPCHeapStatus = record
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MaxHeapSize,
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MaxHeapUsed,
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CurrHeapSize,
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CurrHeapUsed,
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CurrHeapFree : ptruint;
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end;
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THeapStatus = record
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TotalAddrSpace: Cardinal;
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TotalUncommitted: Cardinal;
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TotalCommitted: Cardinal;
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TotalAllocated: Cardinal;
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TotalFree: Cardinal;
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FreeSmall: Cardinal;
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FreeBig: Cardinal;
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Unused: Cardinal;
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Overhead: Cardinal;
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HeapErrorCode: Cardinal;
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end;
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PMemoryManager = ^TMemoryManager;
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TMemoryManager = record
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NeedLock : boolean; // Obsolete
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Getmem : Function(Size:ptruint):Pointer;
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Freemem : Function(p:pointer):ptruint;
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FreememSize : Function(p:pointer;Size:ptruint):ptruint;
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AllocMem : Function(Size:ptruint):Pointer;
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ReAllocMem : Function(var p:pointer;Size:ptruint):Pointer;
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MemSize : function(p:pointer):ptruint;
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InitThread : procedure;
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DoneThread : procedure;
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RelocateHeap : procedure;
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GetHeapStatus : function :THeapStatus;
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GetFPCHeapStatus : function :TFPCHeapStatus;
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end;
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procedure GetMemoryManager(var MemMgr: TMemoryManager);
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procedure SetMemoryManager(const MemMgr: TMemoryManager);
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function IsMemoryManagerSet: Boolean;
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{ Variables }
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const
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MaxKeptOSChunks: DWord = 4; { if more than MaxKeptOSChunks are free, the heap manager will release
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chunks back to the OS }
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growheapsizesmall : ptruint=32*1024; { fixed-size small blocks will grow with 32k }
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growheapsize1 : ptruint=256*1024; { < 256k will grow with 256k }
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growheapsize2 : ptruint=1024*1024; { > 256k will grow with 1m }
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var
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ReturnNilIfGrowHeapFails : boolean;
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{ Default MemoryManager functions }
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Function SysGetmem(Size:ptruint):Pointer;
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Function SysFreemem(p:pointer):ptruint;
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Function SysFreememSize(p:pointer;Size:ptruint):ptruint;
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Function SysMemSize(p:pointer):ptruint;
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Function SysAllocMem(size:ptruint):Pointer;
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function SysTryResizeMem(var p:pointer;size:ptruint):boolean;
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Function SysReAllocMem(var p:pointer;size:ptruint):Pointer;
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function SysGetHeapStatus:THeapStatus;
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function SysGetFPCHeapStatus:TFPCHeapStatus;
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{ Tp7 functions }
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Procedure Getmem(Out p:pointer;Size:ptruint);
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Procedure Getmemory(Out p:pointer;Size:ptruint);
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Procedure Freemem(p:pointer;Size:ptruint);
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Procedure Freememory(p:pointer;Size:ptruint);
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{ FPC additions }
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Function MemSize(p:pointer):ptruint;
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{ Delphi functions }
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function GetMem(size:ptruint):pointer;
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function GetMemory(size:ptruint):pointer; cdecl;
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function Freemem(p:pointer):ptruint;
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function Freememory(p:pointer):ptruint; cdecl;
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function AllocMem(Size:ptruint):pointer;
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function ReAllocMem(var p:pointer;Size:ptruint):pointer;
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function ReAllocMemory(p:pointer;Size:ptruint):pointer; cdecl;
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function GetHeapStatus:THeapStatus;
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function GetFPCHeapStatus:TFPCHeapStatus;
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{ Bootstrapping }
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