-/*
- * 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.
* Copyright (C) 2012 Xamarin Inc
*
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License 2.0 as published by the Free Software Foundation;
- *
- * This library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License 2.0 along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Licensed under the MIT license. See LICENSE file in the project root for full license information.
*/
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
+#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
+#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)
+
+#ifdef SGEN_CONCURRENT_MAJOR
+#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
-#error "Please define GC_CONF_NAME"
+#error "No nursery configuration specified"
#endif
#undef HANDLE_PTR
#define HANDLE_PTR(ptr,obj) do { \
void *__old = *(ptr); \
SGEN_OBJECT_LAYOUT_STATISTICS_MARK_BITMAP ((obj), (ptr)); \
- binary_protocol_scan_process_reference ((obj), (ptr), __old); \
+ binary_protocol_scan_process_reference ((full_object), (ptr), __old); \
if (__old) { \
SERIAL_COPY_OBJECT_FROM_OBJ ((ptr), queue); \
SGEN_COND_LOG (9, __old != *(ptr), "Overwrote field at %p with %p (was: %p)", (ptr), *(ptr), __old); \
} while (0)
static void
-SERIAL_SCAN_OBJECT (GCObject *object, SgenDescriptor desc, SgenGrayQueue *queue)
+SERIAL_SCAN_OBJECT (GCObject *full_object, SgenDescriptor desc, SgenGrayQueue *queue)
{
- char *start = (char*)object;
+ char *start = (char*)full_object;
SGEN_OBJECT_LAYOUT_STATISTICS_DECLARE_BITMAP;
#include "sgen-scan-object.h"
}
-#define FILL_MINOR_COLLECTOR_SCAN_OBJECT(collector) do { \
- (collector)->serial_ops.scan_object = SERIAL_SCAN_OBJECT; \
- (collector)->serial_ops.scan_vtype = SERIAL_SCAN_VTYPE; \
+static void
+SERIAL_SCAN_PTR_FIELD (GCObject *full_object, GCObject **ptr, SgenGrayQueue *queue)
+{
+ 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)