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104 lines
3.3 KiB
PHP
104 lines
3.3 KiB
PHP
{
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$Id$
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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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PMemoryManager = ^TMemoryManager;
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TMemoryManager = record
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NeedLock : boolean;
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Getmem : Function(Size:Longint):Pointer;
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Freemem : Function(p:pointer):Longint;
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FreememSize : Function(p:pointer;Size:Longint):Longint;
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AllocMem : Function(Size:longint):Pointer;
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ReAllocMem : Function(var p:pointer;Size:longint):Pointer;
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MemSize : function(p:pointer):Longint;
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MemAvail : Function:Longint;
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MaxAvail : Function:Longint;
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HeapSize : Function:Longint;
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end;
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TMemoryMutexManager = record
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MutexInit : procedure;
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MutexDone : procedure;
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MutexLock : procedure;
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MutexUnlock : procedure;
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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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procedure SetMemoryMutexManager(var MutexMgr: TMemoryMutexManager);
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{ Variables }
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const
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growheapsize1 : longint=256*1024; { < 256k will grow with 256k }
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growheapsize2 : longint=1024*1024; { > 256k will grow with 1m }
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ReturnNilIfGrowHeapFails : boolean = false;
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var
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heaporg,heapptr,heapend,heaperror,freelist : pointer;
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{ Default MemoryManager functions }
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Function SysGetmem(Size:Longint):Pointer;
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Function SysFreemem(p:pointer):Longint;
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Function SysFreememSize(p:pointer;Size:Longint):Longint;
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Function SysMemSize(p:pointer):Longint;
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Function SysAllocMem(size:longint):Pointer;
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function SysTryResizeMem(var p:pointer;size : longint):boolean;
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Function SysReAllocMem(var p:pointer;size:longint):Pointer;
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Function Sysmemavail:Longint;
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Function Sysmaxavail:Longint;
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Function Sysheapsize:longint;
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{ Tp7 functions }
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Procedure Getmem(Var p:pointer;Size:Longint);
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Procedure Freemem(p:pointer;Size:Longint);
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Function memavail:Longint;
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Function maxavail:Longint;
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{ FPC additions }
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Function MemSize(p:pointer):Longint;
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Function heapsize:longint;
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{ Delphi functions }
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function GetMem(size:longint):pointer;
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function Freemem(p:pointer):longint;
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function AllocMem(Size:Longint):pointer;
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function ReAllocMem(var p:pointer;Size:Longint):pointer;
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{ Do nothing functions, are only here for tp7 compat }
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Procedure mark(var p : pointer);
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Procedure release(var p : pointer);
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{$ifndef ValueGetmem}
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{ Needed to solve overloading problem with call from assembler (PFV) }
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Procedure AsmGetmem(var p:pointer;size:Longint);
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{$endif ValueGetmem}
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{$ifndef ValueFreemem}
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Procedure AsmFreemem(var p:pointer);
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{$endif ValueFreemem}
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{
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$Log$
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Revision 1.6 2002-10-30 20:39:13 peter
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* MemoryManager record has a field NeedLock if the wrapper functions
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need to provide locking for multithreaded programs
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Revision 1.5 2002/10/14 19:39:17 peter
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* threads unit added for thread support
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Revision 1.4 2002/09/07 15:07:45 peter
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* old logs removed and tabs fixed
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}
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