* Turning on heavy statistics will turn off the managed allocator and
* the managed write barrier.
*/
-//#define HEAVY_STATISTICS
+// #define HEAVY_STATISTICS
/*
* Define this to allow the user to change the nursery size by
/*
* The binary protocol enables logging a lot of the GC ativity in a way that is not very
- * intrusive and produce a compact file that can be searched using a custom tool.
- *
+ * intrusive and produces a compact file that can be searched using a custom tool. This
+ * option enables very fine-grained binary protocol events, which will make the GC a tiny
+ * bit less efficient even if no binary protocol file is generated.
+ */
+//#define SGEN_HEAVY_BINARY_PROTOCOL
+
+/*
+ * This enables checks whenever objects are enqueued in gray queues.
+ * Right now the only check done is that we never enqueue nursery
+ * pointers in the concurrent collector.
+ */
+//#define SGEN_CHECK_GRAY_OBJECT_ENQUEUE
+
+/*
+ * This keeps track of where a gray object queue section is and
+ * whether it is where it should be.
*/
-//#define SGEN_BINARY_PROTOCOL
+//#define SGEN_CHECK_GRAY_OBJECT_SECTIONS
/*
* Define this and use the "xdomain-checks" MONO_GC_DEBUG option to
*/
//#define XDOMAIN_CHECKS_IN_WBARRIER
-#ifndef SGEN_BINARY_PROTOCOL
+/*
+ * Define this to get number of objects marked information in the
+ * concurrent GC DTrace probes. Has a small performance impact, so
+ * it's disabled by default.
+ */
+//#define SGEN_COUNT_NUMBER_OF_MAJOR_OBJECTS_MARKED
+
+/*
+ * Object layout statistics gather a histogram of reference locations
+ * over all scanned objects. We use this information to improve GC
+ * descriptors to speed up scanning. This does not provide any
+ * troubleshooting assistance (unless you are troubled in highly
+ * unusual ways) and makes scanning slower.
+ */
+//#define SGEN_OBJECT_LAYOUT_STATISTICS
+
+#ifndef SGEN_HEAVY_BINARY_PROTOCOL
#ifndef HEAVY_STATISTICS
#define MANAGED_ALLOCATION
#ifndef XDOMAIN_CHECKS_IN_WBARRIER
* Maximum level of asserts to enable on this build.
* FIXME replace all magic numbers with defines.
*/
-#define SGEN_MAX_ASSERT_LEVEL 2
+#define SGEN_MAX_ASSERT_LEVEL 5
#define GC_BITS_PER_WORD (sizeof (mword) * 8)
#define SGEN_MAX_NURSERY_WASTE 512
-/* This is also the MAJOR_SECTION_SIZE for the copying major
- collector */
-#define SGEN_PINNED_CHUNK_SIZE (128 * 1024)
-
-/*
- * Number of entries of a sequential store buffer.
- * This number represents how frequently we'll have to alloc
- * a new buffer, so it's a tradeoff of potential wasted space and
- * increased performance.
- *
- * The current value of 1024 was probably selected because it fits a x86 page.
- * There's no history on the why's of this value besides this.
- */
-#define DEFAULT_REMSET_SIZE 1024
-
-
/*
* Minimum allowance for nursery allocations, as a multiple of the size of nursery.
*
#define SGEN_MIN_SAVE_TARGET_RATIO 0.1
#define SGEN_MAX_SAVE_TARGET_RATIO 2.0
+/*
+ * Configurable cementing parameters.
+ *
+ * The hash table size should be a prime. If there are too many
+ * pinned nursery objects with many references from the major heap,
+ * this number must be increased.
+ *
+ * The threshold is the number of references from the major heap to a
+ * pinned nursery object which triggers cementing: if there are more
+ * than that number of references, the pinned object is cemented until
+ * the next major collection.
+ */
+#define SGEN_CEMENT_HASH_SIZE 61
+#define SGEN_CEMENT_THRESHOLD 1000
+
#endif
projects / mono.git / blobdiff