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https://github.com/KolibriOS/kolibrios.git
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87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
// Emacs style mode select -*- C++ -*-
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//-----------------------------------------------------------------------------
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//
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// $Id:$
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//
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// Copyright (C) 1993-1996 by id Software, Inc.
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//
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// This source is available for distribution and/or modification
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// only under the terms of the DOOM Source Code License as
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// published by id Software. All rights reserved.
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//
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// The source 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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// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
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// for more details.
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//
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// DESCRIPTION:
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// Zone Memory Allocation, perhaps NeXT ObjectiveC inspired.
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// Remark: this was the only stuff that, according
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// to John Carmack, might have been useful for
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// Quake.
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//
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//---------------------------------------------------------------------
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#ifndef __Z_ZONE__
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#define __Z_ZONE__
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#include <stdio.h>
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//
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// ZONE MEMORY
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// PU - purge tags.
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// Tags < 100 are not overwritten until freed.
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#define PU_STATIC 1 // static entire execution time
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#define PU_SOUND 2 // static while playing
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#define PU_MUSIC 3 // static while playing
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#define PU_DAVE 4 // anything else Dave wants static
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#define PU_LEVEL 50 // static until level exited
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#define PU_LEVSPEC 51 // a special thinker in a level
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// Tags >= 100 are purgable whenever needed.
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#define PU_PURGELEVEL 100
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#define PU_CACHE 101
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void Z_Init (void);
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void* Z_Malloc (int size, int tag, void *ptr);
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void Z_Free (void *ptr);
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void Z_FreeTags (int lowtag, int hightag);
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void Z_DumpHeap (int lowtag, int hightag);
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void Z_FileDumpHeap (FILE *f);
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void Z_CheckHeap (void);
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void Z_ChangeTag2 (void *ptr, int tag);
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int Z_FreeMemory (void);
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typedef struct memblock_s
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{
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int size; // including the header and possibly tiny fragments
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void** user; // NULL if a free block
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int tag; // purgelevel
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int id; // should be ZONEID
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struct memblock_s* next;
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struct memblock_s* prev;
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} memblock_t;
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//
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// This is used to get the local FILE:LINE info from CPP
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// prior to really call the function in question.
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//
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#define Z_ChangeTag(p,t) \
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{ \
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if (( (memblock_t *)( (byte *)(p) - sizeof(memblock_t)))->id!=0x1d4a11) \
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I_Error("Z_CT at "__FILE__":%i",__LINE__); \
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Z_ChangeTag2(p,t); \
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};
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#endif
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//-----------------------------------------------------------------------------
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//
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// $Log:$
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//
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//-----------------------------------------------------------------------------
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