fix for lift blocking due to imprecision at very low frame times (slowmo)

[xonotic/darkplaces.git] / zone.h

diff --git a/zone.h b/zone.h
index d50265fbdc263feda5777f82e122d54db901e843..8db00453c8ca23fc05c986391bab4c25c888c43a 100644 (file)
--- a/zone.h
+++ b/zone.h
@@ -21,30 +21,38 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #ifndef ZONE_H
 #define ZONE_H
 
+// LordHavoc: this is pointless with a good C library
+//#define MEMCLUMPING
+
 #define POOLNAMESIZE 128
+#if MEMCLUMPING
 // give malloc padding so we can't waste most of a page at the end
 #define MEMCLUMPSIZE (65536 - 1536)
 // smallest unit we care about is this many bytes
 #define MEMUNIT 8
 #define MEMBITS (MEMCLUMPSIZE / MEMUNIT)
 #define MEMBITINTS (MEMBITS / 32)
+#define MEMCLUMP_SENTINEL 0xABADCAFE
+#endif
 
 #define MEMHEADER_SENTINEL1 0xDEADF00D
 #define MEMHEADER_SENTINEL2 0xDF
-#define MEMCLUMP_SENTINEL 0xABADCAFE
 
 typedef struct memheader_s
 {
-       // next memheader in chain belonging to pool
-       struct memheader_s *chain;
+       // next and previous memheaders in chain belonging to pool
+       struct memheader_s *next;
+       struct memheader_s *prev;
        // pool this memheader belongs to
        struct mempool_s *pool;
+#if MEMCLUMPING
        // clump this memheader lives in, NULL if not in a clump
        struct memclump_s *clump;
+#endif
        // size of the memory after the header (excluding header and sentinel2)
        int size;
        // file name and line where Mem_Alloc was called
-       char *filename;
+       const char *filename;
        int fileline;
        // should always be MEMHEADER_SENTINEL1
        int sentinel1;
@@ -52,6 +60,7 @@ typedef struct memheader_s
 }
 memheader_t;
 
+#if MEMCLUMPING
 typedef struct memclump_s
 {
        // contents of the clump
@@ -72,13 +81,18 @@ typedef struct memclump_s
        struct memclump_s *chain;
 }
 memclump_t;
+#endif
 
 typedef struct mempool_s
 {
+       // should always be MEMHEADER_SENTINEL1
+       int sentinel1;
        // chain of individual memory allocations
        struct memheader_s *chain;
+#if MEMCLUMPING
        // chain of clumps (if any)
        struct memclump_s *clumpchain;
+#endif
        // total memory allocated in this pool (inside memheaders)
        int totalsize;
        // total memory allocated in this pool (actual malloc total)
@@ -89,6 +103,11 @@ typedef struct mempool_s
        char name[POOLNAMESIZE];
        // linked into global mempool list
        struct mempool_s *next;
+       // file name and line where Mem_AllocPool was called
+       const char *filename;
+       int fileline;
+       // should always be MEMHEADER_SENTINEL1
+       int sentinel2;
 }
 mempool_t;
 
@@ -100,13 +119,13 @@ mempool_t;
 #define Mem_FreePool(pool) _Mem_FreePool(pool, __FILE__, __LINE__)
 #define Mem_EmptyPool(pool) _Mem_EmptyPool(pool, __FILE__, __LINE__)
 
-void *_Mem_Alloc(mempool_t *pool, int size, char *filename, int fileline);
-void _Mem_Free(void *data, char *filename, int fileline);
-mempool_t *_Mem_AllocPool(char *name, char *filename, int fileline);
-void _Mem_FreePool(mempool_t **pool, char *filename, int fileline);
-void _Mem_EmptyPool(mempool_t *pool, char *filename, int fileline);
-void _Mem_CheckSentinels(void *data, char *filename, int fileline);
-void _Mem_CheckSentinelsGlobal(char *filename, int fileline);
+void *_Mem_Alloc(mempool_t *pool, int size, const char *filename, int fileline);
+void _Mem_Free(void *data, const char *filename, int fileline);
+mempool_t *_Mem_AllocPool(const char *name, const char *filename, int fileline);
+void _Mem_FreePool(mempool_t **pool, const char *filename, int fileline);
+void _Mem_EmptyPool(mempool_t *pool, const char *filename, int fileline);
+void _Mem_CheckSentinels(void *data, const char *filename, int fileline);
+void _Mem_CheckSentinelsGlobal(const char *filename, int fileline);
 
 // used for temporary allocations
 mempool_t *tempmempool;