gc: add Nit GC

[nit.git] / clib / gc.h

diff --git a/clib/gc.h b/clib/gc.h
new file mode 100644 (file)
index 0000000..8dd4af2
--- /dev/null
+++ b/clib/gc.h
@@ -0,0 +1,61 @@
+/* This file is part of NIT ( http://www.nitlanguage.org ).
+ *
+ * Copyright 2009 Julien Chevalier <chevjulien@gmail.com>
+ *
+ * This file is free software, which comes along with NIT.  This software 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.  You can modify it is you want,  provided this header
+ * is kept unaltered, and a notification of the changes is added.
+ * You  are  allowed  to  redistribute it and sell it, alone or is a part of
+ * another product.
+ */
+
+#ifndef GC
+#define GC
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include "nit_common.h"
+#include "gc_static_objects_list.h"
+
+/* Markbit manipulations */
+#define GET_MARKBIT(x) (((val_t)(x[0].vft)) & 1)
+#define SET_MARKBIT(x) ((x)->vft = (void*)(((bigint)((x)->vft)) | 1))
+#define REMOVE_MARKBIT(x) (x ^ 1)
+
+#define HEAP_ACTIVE_SIZE_MIN 3000
+
+typedef struct heap {
+       char *heapPointer;
+       unsigned long size;
+}heap;
+
+typedef struct TBOX_struct {
+       const classtable_elt_t * vft;
+       char * val;
+       bigint object_id;
+} * BOX_struct;
+
+heap* heapActive;
+heap* heapInactive;
+char *allocationPointer;
+char *evacuationPointer;
+char *scavengingPointer;
+
+unsigned long heapActiveUsedSize;
+
+GC_List staticObjects;
+
+void Nit_gc_init();
+
+val_t GC_evacuation(obj_t object);
+
+void GC_scavenging();
+
+void* Nit_gc_malloc( size_t size );
+
+void GC_add_static_object(val_t * pointer);
+
+#endif