1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/prims/jvmtiRedefineClassesTrace.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,138 @@
1.4 +/*
1.5 + * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef SHARE_VM_PRIMS_JVMTIREDEFINECLASSESTRACE_HPP
1.29 +#define SHARE_VM_PRIMS_JVMTIREDEFINECLASSESTRACE_HPP
1.30 +
1.31 +// RedefineClasses tracing support via the TraceRedefineClasses
1.32 +// option. A bit is assigned to each group of trace messages.
1.33 +// Groups of messages are individually selectable. We have to use
1.34 +// decimal values on the command line since the command option
1.35 +// parsing logic doesn't like non-decimal numerics. The HEX values
1.36 +// are used in the actual RC_TRACE() calls for sanity. To achieve
1.37 +// the old cumulative behavior, pick the level after the one in
1.38 +// which you are interested and subtract one, e.g., 33554431 will
1.39 +// print every tracing message.
1.40 +//
1.41 +// 0x00000000 | 0 - default; no tracing messages
1.42 +// 0x00000001 | 1 - name each target class before loading, after
1.43 +// loading and after redefinition is completed
1.44 +// 0x00000002 | 2 - print info if parsing, linking or
1.45 +// verification throws an exception
1.46 +// 0x00000004 | 4 - print timer info for the VM operation
1.47 +// 0x00000008 | 8 - print subclass counter updates
1.48 +// 0x00000010 | 16 - unused
1.49 +// 0x00000020 | 32 - unused
1.50 +// 0x00000040 | 64 - unused
1.51 +// 0x00000080 | 128 - unused
1.52 +// 0x00000100 | 256 - previous class weak reference addition
1.53 +// 0x00000200 | 512 - previous class weak reference mgmt during
1.54 +// class unloading checks (GC)
1.55 +// 0x00000400 | 1024 - previous class weak reference mgmt during
1.56 +// add previous ops (GC)
1.57 +// 0x00000800 | 2048 - previous class breakpoint mgmt
1.58 +// 0x00001000 | 4096 - detect calls to obsolete methods
1.59 +// 0x00002000 | 8192 - fail a guarantee() in addition to detection
1.60 +// 0x00004000 | 16384 - detect old/obsolete methods in metadata
1.61 +// 0x00008000 | 32768 - old/new method matching/add/delete
1.62 +// 0x00010000 | 65536 - impl details: CP size info
1.63 +// 0x00020000 | 131072 - impl details: CP merge pass info
1.64 +// 0x00040000 | 262144 - impl details: CP index maps
1.65 +// 0x00080000 | 524288 - impl details: modified CP index values
1.66 +// 0x00100000 | 1048576 - impl details: vtable updates
1.67 +// 0x00200000 | 2097152 - impl details: itable updates
1.68 +// 0x00400000 | 4194304 - impl details: constant pool cache updates
1.69 +// 0x00800000 | 8388608 - impl details: methodComparator info
1.70 +// 0x01000000 | 16777216 - impl details: nmethod evolution info
1.71 +// 0x02000000 | 33554432 - impl details: annotation updates
1.72 +// 0x04000000 | 67108864 - impl details: StackMapTable updates
1.73 +// 0x08000000 | 134217728 - impl details: OopMapCache updates
1.74 +// 0x10000000 | 268435456 - unused
1.75 +// 0x20000000 | 536870912 - unused
1.76 +// 0x40000000 | 1073741824 - unused
1.77 +// 0x80000000 | 2147483648 - unused
1.78 +
1.79 +// Macro for checking if TraceRedefineClasses has a specific bit
1.80 +// enabled. Returns true if the bit specified by level is set.
1.81 +#define RC_TRACE_ENABLED(level) ((TraceRedefineClasses & level) != 0)
1.82 +
1.83 +// Macro for checking if TraceRedefineClasses has one or more bits
1.84 +// set in a range of bit values. Returns true if one or more bits
1.85 +// is set in the range from low..high inclusive. Assumes that low
1.86 +// and high are single bit values.
1.87 +//
1.88 +// ((high << 1) - 1)
1.89 +// Yields a mask that removes bits greater than the high bit value.
1.90 +// This algorithm doesn't work with highest bit.
1.91 +// ~(low - 1)
1.92 +// Yields a mask that removes bits lower than the low bit value.
1.93 +#define RC_TRACE_IN_RANGE(low, high) \
1.94 +(((TraceRedefineClasses & ((high << 1) - 1)) & ~(low - 1)) != 0)
1.95 +
1.96 +// Note: The ResourceMark is to cleanup resource allocated args.
1.97 +// The "do {...} while (0)" is so we can use semi-colon at end of RC_TRACE().
1.98 +#define RC_TRACE(level, args) do { \
1.99 + if (RC_TRACE_ENABLED(level)) { \
1.100 + ResourceMark rm; \
1.101 + tty->print("RedefineClasses-0x%x: ", level); \
1.102 + tty->print_cr args; \
1.103 + } \
1.104 +} while (0)
1.105 +
1.106 +#define RC_TRACE_NO_CR(level, args) do { \
1.107 + if (RC_TRACE_ENABLED(level)) { \
1.108 + ResourceMark rm; \
1.109 + tty->print("RedefineClasses-0x%x: ", level); \
1.110 + tty->print args; \
1.111 + } \
1.112 +} while (0)
1.113 +
1.114 +#define RC_TRACE_WITH_THREAD(level, thread, args) do { \
1.115 + if (RC_TRACE_ENABLED(level)) { \
1.116 + ResourceMark rm(thread); \
1.117 + tty->print("RedefineClasses-0x%x: ", level); \
1.118 + tty->print_cr args; \
1.119 + } \
1.120 +} while (0)
1.121 +
1.122 +#define RC_TRACE_MESG(args) do { \
1.123 + ResourceMark rm; \
1.124 + tty->print("RedefineClasses: "); \
1.125 + tty->print_cr args; \
1.126 +} while (0)
1.127 +
1.128 +// Timer support macros. Only do timer operations if timer tracing is enabled.
1.129 +// The "do {...} while (0)" is so we can use semi-colon at end of the macro.
1.130 +#define RC_TIMER_START(t) do { \
1.131 + if (RC_TRACE_ENABLED(0x00000004)) { \
1.132 + t.start(); \
1.133 + } \
1.134 +} while (0)
1.135 +#define RC_TIMER_STOP(t) do { \
1.136 + if (RC_TRACE_ENABLED(0x00000004)) { \
1.137 + t.stop(); \
1.138 + } \
1.139 +} while (0)
1.140 +
1.141 +#endif // SHARE_VM_PRIMS_JVMTIREDEFINECLASSESTRACE_HPP
