--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/prims/jvmtiRedefineClassesTrace.hpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,123 @@
+/*
+ * Copyright 2003-2006 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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 General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// RedefineClasses tracing support via the TraceRedefineClasses
+// option. A bit is assigned to each group of trace messages.
+// Groups of messages are individually selectable. We have to use
+// decimal values on the command line since the command option
+// parsing logic doesn't like non-decimal numerics. The HEX values
+// are used in the actual RC_TRACE() calls for sanity. To achieve
+// the old cumulative behavior, pick the level after the one in
+// which you are interested and subtract one, e.g., 33554431 will
+// print every tracing message.
+//
+// 0x00000000 | 0 - default; no tracing messages
+// 0x00000001 | 1 - name each target class before loading, after
+// loading and after redefinition is completed
+// 0x00000002 | 2 - print info if parsing, linking or
+// verification throws an exception
+// 0x00000004 | 4 - print timer info for the VM operation
+// 0x00000008 | 8 - print subclass counter updates
+// 0x00000010 | 16 - unused
+// 0x00000020 | 32 - unused
+// 0x00000040 | 64 - unused
+// 0x00000080 | 128 - unused
+// 0x00000100 | 256 - previous class weak reference addition
+// 0x00000200 | 512 - previous class weak reference mgmt during
+// class unloading checks (GC)
+// 0x00000400 | 1024 - previous class weak reference mgmt during
+// add previous ops (GC)
+// 0x00000800 | 2048 - previous class breakpoint mgmt
+// 0x00001000 | 4096 - unused
+// 0x00002000 | 8192 - unused
+// 0x00004000 | 16384 - unused
+// 0x00008000 | 32768 - old/new method matching/add/delete
+// 0x00010000 | 65536 - impl details: CP size info
+// 0x00020000 | 131072 - impl details: CP merge pass info
+// 0x00040000 | 262144 - impl details: CP index maps
+// 0x00080000 | 524288 - impl details: modified CP index values
+// 0x00100000 | 1048576 - impl details: vtable updates
+// 0x00200000 | 2097152 - impl details: itable updates
+// 0x00400000 | 4194304 - impl details: constant pool cache updates
+// 0x00800000 | 8388608 - impl details: methodComparator info
+// 0x01000000 | 16777216 - impl details: nmethod evolution info
+// 0x02000000 | 33554432 - impl details: annotation updates
+// 0x04000000 | 67108864 - impl details: StackMapTable updates
+// 0x08000000 | 134217728 - unused
+// 0x10000000 | 268435456 - unused
+// 0x20000000 | 536870912 - unused
+// 0x40000000 | 1073741824 - unused
+// 0x80000000 | 2147483648 - unused
+//
+// Note: The ResourceMark is to cleanup resource allocated args.
+// The "while (0)" is so we can use semi-colon at end of RC_TRACE().
+#define RC_TRACE(level, args) \
+ if ((TraceRedefineClasses & level) != 0) { \
+ ResourceMark rm; \
+ tty->print("RedefineClasses-0x%x: ", level); \
+ tty->print_cr args; \
+ } while (0)
+
+#define RC_TRACE_WITH_THREAD(level, thread, args) \
+ if ((TraceRedefineClasses & level) != 0) { \
+ ResourceMark rm(thread); \
+ tty->print("RedefineClasses-0x%x: ", level); \
+ tty->print_cr args; \
+ } while (0)
+
+#define RC_TRACE_MESG(args) \
+ { \
+ ResourceMark rm; \
+ tty->print("RedefineClasses: "); \
+ tty->print_cr args; \
+ } while (0)
+
+// Macro for checking if TraceRedefineClasses has a specific bit
+// enabled. Returns true if the bit specified by level is set.
+#define RC_TRACE_ENABLED(level) ((TraceRedefineClasses & level) != 0)
+
+// Macro for checking if TraceRedefineClasses has one or more bits
+// set in a range of bit values. Returns true if one or more bits
+// is set in the range from low..high inclusive. Assumes that low
+// and high are single bit values.
+//
+// ((high << 1) - 1)
+// Yields a mask that removes bits greater than the high bit value.
+// This algorithm doesn't work with highest bit.
+// ~(low - 1)
+// Yields a mask that removes bits lower than the low bit value.
+#define RC_TRACE_IN_RANGE(low, high) \
+(((TraceRedefineClasses & ((high << 1) - 1)) & ~(low - 1)) != 0)
+
+// Timer support macros. Only do timer operations if timer tracing
+// is enabled. The "while (0)" is so we can use semi-colon at end of
+// the macro.
+#define RC_TIMER_START(t) \
+ if (RC_TRACE_ENABLED(0x00000004)) { \
+ t.start(); \
+ } while (0)
+#define RC_TIMER_STOP(t) \
+ if (RC_TRACE_ENABLED(0x00000004)) { \
+ t.stop(); \
+ } while (0)