X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=mono%2Fsgen%2Fsgen-minor-scan-object.h;h=f0baac8f87ebcdc8561b7ded135a3a033f74a33d;hb=1e58d75461d3a60ac6be6ff60b30d7e67cdd3dee;hp=cc3e7a4539e794037d54c6055196b2d9df815fef;hpb=fee5ece80556eb45d16da5f6c0fde991e5af1d40;p=mono.git

diff --git a/mono/sgen/sgen-minor-scan-object.h b/mono/sgen/sgen-minor-scan-object.h
index cc3e7a4539e..f0baac8f87e 100644
--- a/mono/sgen/sgen-minor-scan-object.h
+++ b/mono/sgen/sgen-minor-scan-object.h
@@ -1,5 +1,6 @@
-/*
- * sgen-minor-scan-object.h: Object scanning in the nursery collectors.
+/**
+ * \file
+ * Object scanning in the nursery collectors.
  *
  * Copyright 2001-2003 Ximian, Inc
  * Copyright 2003-2010 Novell, Inc.
@@ -13,17 +14,34 @@ extern guint64 stat_scan_object_called_nursery;
 #undef SERIAL_SCAN_OBJECT
 #undef SERIAL_SCAN_VTYPE
 #undef SERIAL_SCAN_PTR_FIELD
+#undef SERIAL_DRAIN_GRAY_STACK
 
 #if defined(SGEN_SIMPLE_NURSERY)
 
+#ifdef SGEN_SIMPLE_PAR_NURSERY
+#ifdef SGEN_CONCURRENT_MAJOR
+#define SERIAL_SCAN_OBJECT simple_par_nursery_serial_with_concurrent_major_scan_object
+#define SERIAL_SCAN_VTYPE simple_par_nursery_serial_with_concurrent_major_scan_vtype
+#define SERIAL_SCAN_PTR_FIELD simple_par_nursery_serial_with_concurrent_major_scan_ptr_field
+#define SERIAL_DRAIN_GRAY_STACK simple_par_nursery_serial_with_concurrent_major_drain_gray_stack
+#else
+#define SERIAL_SCAN_OBJECT simple_par_nursery_serial_scan_object
+#define SERIAL_SCAN_VTYPE simple_par_nursery_serial_scan_vtype
+#define SERIAL_SCAN_PTR_FIELD simple_par_nursery_serial_scan_ptr_field
+#define SERIAL_DRAIN_GRAY_STACK simple_par_nursery_serial_drain_gray_stack
+#endif
+#else
 #ifdef SGEN_CONCURRENT_MAJOR
 #define SERIAL_SCAN_OBJECT simple_nursery_serial_with_concurrent_major_scan_object
 #define SERIAL_SCAN_VTYPE simple_nursery_serial_with_concurrent_major_scan_vtype
 #define SERIAL_SCAN_PTR_FIELD simple_nursery_serial_with_concurrent_major_scan_ptr_field
+#define SERIAL_DRAIN_GRAY_STACK simple_nursery_serial_with_concurrent_major_drain_gray_stack
 #else
 #define SERIAL_SCAN_OBJECT simple_nursery_serial_scan_object
 #define SERIAL_SCAN_VTYPE simple_nursery_serial_scan_vtype
 #define SERIAL_SCAN_PTR_FIELD simple_nursery_serial_scan_ptr_field
+#define SERIAL_DRAIN_GRAY_STACK simple_nursery_serial_drain_gray_stack
+#endif
 #endif
 
 #elif defined (SGEN_SPLIT_NURSERY)
@@ -32,10 +50,12 @@ extern guint64 stat_scan_object_called_nursery;
 #define SERIAL_SCAN_OBJECT split_nursery_serial_with_concurrent_major_scan_object
 #define SERIAL_SCAN_VTYPE split_nursery_serial_with_concurrent_major_scan_vtype
 #define SERIAL_SCAN_PTR_FIELD split_nursery_serial_with_concurrent_major_scan_ptr_field
+#define SERIAL_DRAIN_GRAY_STACK split_nursery_serial_with_concurrent_major_drain_gray_stack
 #else
 #define SERIAL_SCAN_OBJECT split_nursery_serial_scan_object
 #define SERIAL_SCAN_VTYPE split_nursery_serial_scan_vtype
 #define SERIAL_SCAN_PTR_FIELD split_nursery_serial_scan_ptr_field
+#define SERIAL_DRAIN_GRAY_STACK split_nursery_serial_drain_gray_stack
 #endif
 
 #else
@@ -95,8 +115,39 @@ SERIAL_SCAN_PTR_FIELD (GCObject *full_object, GCObject **ptr, SgenGrayQueue *que
 	HANDLE_PTR (ptr, NULL);
 }
 
+static gboolean
+SERIAL_DRAIN_GRAY_STACK (SgenGrayQueue *queue)
+{
+#ifdef SGEN_SIMPLE_PAR_NURSERY
+	int i;
+	/*
+	 * We do bounded iteration so we can switch to optimized context
+	 * when we are the last worker remaining.
+	 */
+	for (i = 0; i < 32; i++) {
+#else
+	for (;;) {
+#endif
+		GCObject *obj;
+		SgenDescriptor desc;
+
+#ifdef SGEN_SIMPLE_PAR_NURSERY
+		GRAY_OBJECT_DEQUEUE_PARALLEL (queue, &obj, &desc);
+#else
+		GRAY_OBJECT_DEQUEUE_SERIAL (queue, &obj, &desc);
+#endif
+		if (!obj)
+			return TRUE;
+
+		SERIAL_SCAN_OBJECT (obj, desc, queue);
+	}
+
+	return FALSE;
+}
+
 #define FILL_MINOR_COLLECTOR_SCAN_OBJECT(ops)	do {			\
 		(ops)->scan_object = SERIAL_SCAN_OBJECT;			\
 		(ops)->scan_vtype = SERIAL_SCAN_VTYPE;			\
 		(ops)->scan_ptr_field = SERIAL_SCAN_PTR_FIELD;		\
+		(ops)->drain_gray_stack = SERIAL_DRAIN_GRAY_STACK;	\
 	} while (0)