adding gc framework

1 files changed, 31 insertions, 0 deletions

diff --git a/gc.h b/gc.h
new file mode 100644
index 0000000..417462f
--- /dev/null
+++ b/gc.h
@@ -0,0 +1,31 @@
+#ifndef GC_H
+#define GC_H
+
+#include "model.h"
+#include <map>
+
+const int GC_QUEUE_SIZE = 262144;
+
+typedef std::map<EvalObj*, size_t> EvalObj2Int;
+
+class GarbageCollector {
+
+    struct PendingEntry {
+        EvalObj *obj;
+        PendingEntry *next;
+        PendingEntry(EvalObj *obj, PendingEntry *next);
+    };
+
+    EvalObj2Int mapping;
+    size_t pend_cnt;
+    PendingEntry *pending_list;
+
+    public:
+    void force();
+    void expose(EvalObj *ptr);
+    EvalObj *attach(EvalObj *ptr);
+};
+
+extern GarbageCollector gc;
+
+#endif