1 /* 2 Copyright (C) 1994-1995 Apogee Software, Ltd. 3 4 This program is free software; you can redistribute it and/or 5 modify it under the terms of the GNU General Public License 6 as published by the Free Software Foundation; either version 2 7 of the License, or (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 12 13 See the GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 18 19 */ 20 //*************************************************************************** 21 // 22 // Z_Zone Memory management Constants 23 // 24 //*************************************************************************** 25 26 27 #ifndef _z_zone_public 28 #define _z_zone_public 29 30 31 extern int lowmemory; 32 33 // tags < 100 are not overwritten until freed 34 #define PU_STATIC 1 // static entire execution time 35 #define PU_GAME 20 // static until game completed 36 #define PU_LEVELSTRUCT 49 // start of static until level exited 37 #define PU_LEVEL 50 // start of static until level exited 38 #define PU_LEVELEND 51 // end of static until level exited 39 40 // tags >= 100 are purgable whenever needed 41 #define PU_PURGELEVEL 100 42 #define PU_CACHE 101 43 #define PU_CACHEWALLS 155 44 #define PU_CACHESPRITES 154 45 #define PU_CACHEBJWEAP 153 46 #define PU_CACHEACTORS 152 47 #define PU_CACHESOUNDS 120 48 #define PU_FLAT 102 49 #define PU_PATCH 103 50 #define PU_TEXTURE 104 51 52 #define URGENTLEVELSTART PU_LEVEL 53 54 //*************************************************************************** 55 // 56 // Z_ZONE.C - Carmack's Memory manager for protected mode 57 // 58 //*************************************************************************** 59 60 extern int zonememorystarted; 61 62 void Z_Init (int size, int min); // Starts up Memory manager (size is in bytes), (min is minimum requirement) 63 void Z_Free (void *ptr); // Free a pointer in Z_Zone's domain 64 void *Z_Malloc (int size, int tag, void *user); // Malloc You can pass a NULL user if the tag is < PU_PURGELEVEL 65 void *Z_LevelMalloc (int size, int tag, void *user); // Level Malloc for level structures 66 void Z_FreeTags (int lowtag, int hightag); // Free a series of memory tags 67 void Z_DumpHeap (int lowtag, int hightag); // Dump the heap (for debugging purposes) 68 void Z_CheckHeap (void); // Check the heap for corruption 69 void Z_ChangeTag (void *ptr, int tag); // Change the tag of a memory item 70 int Z_HeapSize ( void ); // Return the total heap size 71 int Z_UsedHeap ( void ); // Return used portion of heap size 72 int Z_AvailHeap ( void ); // Returns largest available contiguous block 73 int Z_UsedStaticHeap ( void ); // Returns amount of heap which is static ( < PURGELEVEL ) 74 void Z_ShutDown( void ); 75 int Z_GetSize (void *ptr); 76 int Z_UsedLevelHeap ( void ); 77 void Z_Realloc (void ** ptr, int newsize); 78 79 #endif 80