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git-svn-id: svn://svn.cc65.org/cc65/trunk@3 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/common/_heap.h

@@ -0,0 +1,43 @@
+/*
+ * _heap.h
+ *
+ * Ullrich von Bassewitz, 03.06.1998
+ *
+ */
+
+
+
+#ifndef __HEAP_H
+#define __HEAP_H
+
+
+
+/* Space needed for administering used blocks */
+#define HEAP_ADMIN_SPACE        sizeof (unsigned)
+
+/* The data type used to implement the free list. 
+ * Beware: Field order is significant!
+ */
+struct freeblock {
+    unsigned 		size;
+    struct freeblock*  	next;
+    struct freeblock*  	prev;
+};
+
+
+
+/* Variables that describe the heap */
+extern unsigned*       	  _horg;       	/* Bottom of heap */
+extern unsigned*  	  _hptr;	/* Current top */
+extern unsigned*  	  _hend;	/* Upper limit */
+extern struct freeblock*  _hfirst;	/* First free block in list */
+extern struct freeblock*  _hlast;	/* Last free block in list */
+
+
+
+/* End of _heap.h */
+
+#endif
+
+
+