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Diffstat (limited to 'src/z_zone.h')
| -rw-r--r-- | src/z_zone.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/z_zone.h b/src/z_zone.h new file mode 100644 index 00000000..d8feea7c --- /dev/null +++ b/src/z_zone.h @@ -0,0 +1,89 @@ +// Emacs style mode select -*- C++ -*- +//----------------------------------------------------------------------------- +// +// $Id: z_zone.h 4 2005-07-23 16:19:41Z fraggle $ +// +// Copyright (C) 1993-1996 by id Software, Inc. +// +// This source is available for distribution and/or modification +// only under the terms of the DOOM Source Code License as +// published by id Software. All rights reserved. +// +// The source is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License +// for more details. +// +// DESCRIPTION: +// Zone Memory Allocation, perhaps NeXT ObjectiveC inspired. +// Remark: this was the only stuff that, according +// to John Carmack, might have been useful for +// Quake. +// +//--------------------------------------------------------------------- + + + +#ifndef __Z_ZONE__ +#define __Z_ZONE__ + +#include <stdio.h> + +// +// ZONE MEMORY +// PU - purge tags. +// Tags < 100 are not overwritten until freed. +#define PU_STATIC 1 // static entire execution time +#define PU_SOUND 2 // static while playing +#define PU_MUSIC 3 // static while playing +#define PU_DAVE 4 // anything else Dave wants static +#define PU_LEVEL 50 // static until level exited +#define PU_LEVSPEC 51 // a special thinker in a level +// Tags >= 100 are purgable whenever needed. +#define PU_PURGELEVEL 100 +#define PU_CACHE 101 + + +void Z_Init (void); +void* Z_Malloc (int size, int tag, void *ptr); +void Z_Free (void *ptr); +void Z_FreeTags (int lowtag, int hightag); +void Z_DumpHeap (int lowtag, int hightag); +void Z_FileDumpHeap (FILE *f); +void Z_CheckHeap (void); +void Z_ChangeTag2 (void *ptr, int tag); +int Z_FreeMemory (void); + + +typedef struct memblock_s +{ + int size; // including the header and possibly tiny fragments + void** user; // NULL if a free block + int tag; // purgelevel + int id; // should be ZONEID + struct memblock_s* next; + struct memblock_s* prev; +} memblock_t; + +// +// This is used to get the local FILE:LINE info from CPP +// prior to really call the function in question. +// +#define Z_ChangeTag(p,t) \ +{ \ + if (( (memblock_t *)( (byte *)(p) - sizeof(memblock_t)))->id!=0x1d4a11) \ + I_Error("Z_CT at "__FILE__":%i",__LINE__); \ + Z_ChangeTag2(p,t); \ +}; + + + +#endif +//----------------------------------------------------------------------------- +// +// $Log$ +// Revision 1.1 2005/07/23 16:19:55 fraggle +// Initial revision +// +// +//----------------------------------------------------------------------------- |