Add zone.c

src/common/zone.c

@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 1997-2001 Id Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * =======================================================================
+ *
+ * Zone malloc. It's just a normal mallic with counter.
+ *
+ * =======================================================================
+ */ 
+
+#include "qcommon.h"
+#include "header/zone.h"
+
+#define Z_MAGIC 0x1d1d
+
+zhead_t	z_chain;
+int		z_count, z_bytes;
+
+void Z_Free (void *ptr)
+{
+	zhead_t	*z;
+
+	z = ((zhead_t *)ptr) - 1;
+
+	if (z->magic != Z_MAGIC)
+	{
+		printf( "free: %p failed\n", ptr );
+		abort();
+		Com_Error (ERR_FATAL, "Z_Free: bad magic");
+	}
+
+	z->prev->next = z->next;
+	z->next->prev = z->prev;
+
+	z_count--;
+	z_bytes -= z->size;
+	free (z);
+}
+
+void Z_Stats_f (void)
+{
+	Com_Printf ("%i bytes in %i blocks\n", z_bytes, z_count);
+}
+
+void Z_FreeTags (int tag)
+{
+	zhead_t	*z, *next;
+
+	for (z=z_chain.next ; z != &z_chain ; z=next)
+	{
+		next = z->next;
+
+		if (z->tag == tag)
+			Z_Free ((void *)(z+1));
+	}
+}
+
+void *Z_TagMalloc (int size, int tag)
+{
+	zhead_t	*z;
+
+	size = size + sizeof(zhead_t);
+	z = malloc(size);
+
+	if (!z)
+		Com_Error (ERR_FATAL, "Z_Malloc: failed on allocation of %i bytes",size);
+
+	memset (z, 0, size);
+	z_count++;
+	z_bytes += size;
+	z->magic = Z_MAGIC;
+	z->tag = tag;
+	z->size = size;
+
+	z->next = z_chain.next;
+	z->prev = &z_chain;
+	z_chain.next->prev = z;
+	z_chain.next = z;
+
+	return (void *)(z+1);
+}
+
+void *Z_Malloc (int size)
+{
+	return Z_TagMalloc (size, 0);
+}
+