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| 325 | serge | 1 | // Emacs style mode select -*- C++ -*- |
| 2 | //----------------------------------------------------------------------------- |
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| 3 | // |
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| 4 | // $Id:$ |
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| 5 | // |
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| 6 | // Copyright (C) 1993-1996 by id Software, Inc. |
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| 7 | // |
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| 8 | // This source is available for distribution and/or modification |
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| 9 | // only under the terms of the DOOM Source Code License as |
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| 10 | // published by id Software. All rights reserved. |
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| 11 | // |
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| 12 | // The source is distributed in the hope that it will be useful, |
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| 13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | // FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License |
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| 15 | // for more details. |
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| 16 | // |
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| 17 | // DESCRIPTION: |
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| 18 | // Zone Memory Allocation, perhaps NeXT ObjectiveC inspired. |
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| 19 | // Remark: this was the only stuff that, according |
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| 20 | // to John Carmack, might have been useful for |
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| 21 | // Quake. |
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| 22 | // |
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| 23 | //--------------------------------------------------------------------- |
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| 24 | |||
| 25 | |||
| 26 | |||
| 27 | #ifndef __Z_ZONE__ |
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| 28 | #define __Z_ZONE__ |
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| 29 | |||
| 30 | #include |
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| 31 | |||
| 32 | // |
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| 33 | // ZONE MEMORY |
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| 34 | // PU - purge tags. |
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| 35 | // Tags < 100 are not overwritten until freed. |
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| 36 | #define PU_STATIC 1 // static entire execution time |
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| 37 | #define PU_SOUND 2 // static while playing |
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| 38 | #define PU_MUSIC 3 // static while playing |
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| 39 | #define PU_DAVE 4 // anything else Dave wants static |
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| 40 | #define PU_LEVEL 50 // static until level exited |
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| 41 | #define PU_LEVSPEC 51 // a special thinker in a level |
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| 42 | // Tags >= 100 are purgable whenever needed. |
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| 43 | #define PU_PURGELEVEL 100 |
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| 44 | #define PU_CACHE 101 |
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| 45 | |||
| 46 | |||
| 47 | void Z_Init (void); |
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| 48 | void* Z_Malloc (int size, int tag, void *ptr); |
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| 49 | void Z_Free (void *ptr); |
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| 50 | void Z_FreeTags (int lowtag, int hightag); |
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| 51 | void Z_DumpHeap (int lowtag, int hightag); |
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| 52 | void Z_FileDumpHeap (FILE *f); |
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| 53 | void Z_CheckHeap (void); |
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| 54 | void Z_ChangeTag2 (void *ptr, int tag); |
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| 55 | int Z_FreeMemory (void); |
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| 56 | |||
| 57 | |||
| 58 | typedef struct memblock_s |
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| 59 | { |
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| 60 | int size; // including the header and possibly tiny fragments |
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| 61 | void** user; // NULL if a free block |
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| 62 | int tag; // purgelevel |
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| 63 | int id; // should be ZONEID |
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| 64 | struct memblock_s* next; |
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| 65 | struct memblock_s* prev; |
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| 66 | } memblock_t; |
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| 67 | |||
| 68 | // |
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| 69 | // This is used to get the local FILE:LINE info from CPP |
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| 70 | // prior to really call the function in question. |
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| 71 | // |
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| 72 | #define Z_ChangeTag(p,t) \ |
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| 73 | { \ |
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| 74 | if (( (memblock_t *)( (byte *)(p) - sizeof(memblock_t)))->id!=0x1d4a11) \ |
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| 75 | I_Error("Z_CT at "__FILE__":%i",__LINE__); \ |
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| 76 | Z_ChangeTag2(p,t); \ |
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| 77 | }; |
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| 78 | |||
| 79 | |||
| 80 | |||
| 81 | #endif |
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| 82 | //----------------------------------------------------------------------------- |
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| 83 | // |
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| 84 | // $Log:$ |
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| 85 | // |
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| 86 | //----------------------------------------------------------------------------- |