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comparison: src/share/vm/prims/jvmtiRedefineClassesTrace.hpp
src/share/vm/prims/jvmtiRedefineClassesTrace.hpp
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| 1 /* | |
| 2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #ifndef SHARE_VM_PRIMS_JVMTIREDEFINECLASSESTRACE_HPP | |
| 26 #define SHARE_VM_PRIMS_JVMTIREDEFINECLASSESTRACE_HPP | |
| 27 | |
| 28 // RedefineClasses tracing support via the TraceRedefineClasses | |
| 29 // option. A bit is assigned to each group of trace messages. | |
| 30 // Groups of messages are individually selectable. We have to use | |
| 31 // decimal values on the command line since the command option | |
| 32 // parsing logic doesn't like non-decimal numerics. The HEX values | |
| 33 // are used in the actual RC_TRACE() calls for sanity. To achieve | |
| 34 // the old cumulative behavior, pick the level after the one in | |
| 35 // which you are interested and subtract one, e.g., 33554431 will | |
| 36 // print every tracing message. | |
| 37 // | |
| 38 // 0x00000000 | 0 - default; no tracing messages | |
| 39 // 0x00000001 | 1 - name each target class before loading, after | |
| 40 // loading and after redefinition is completed | |
| 41 // 0x00000002 | 2 - print info if parsing, linking or | |
| 42 // verification throws an exception | |
| 43 // 0x00000004 | 4 - print timer info for the VM operation | |
| 44 // 0x00000008 | 8 - print subclass counter updates | |
| 45 // 0x00000010 | 16 - unused | |
| 46 // 0x00000020 | 32 - unused | |
| 47 // 0x00000040 | 64 - unused | |
| 48 // 0x00000080 | 128 - unused | |
| 49 // 0x00000100 | 256 - previous class weak reference addition | |
| 50 // 0x00000200 | 512 - previous class weak reference mgmt during | |
| 51 // class unloading checks (GC) | |
| 52 // 0x00000400 | 1024 - previous class weak reference mgmt during | |
| 53 // add previous ops (GC) | |
| 54 // 0x00000800 | 2048 - previous class breakpoint mgmt | |
| 55 // 0x00001000 | 4096 - detect calls to obsolete methods | |
| 56 // 0x00002000 | 8192 - fail a guarantee() in addition to detection | |
| 57 // 0x00004000 | 16384 - detect old/obsolete methods in metadata | |
| 58 // 0x00008000 | 32768 - old/new method matching/add/delete | |
| 59 // 0x00010000 | 65536 - impl details: CP size info | |
| 60 // 0x00020000 | 131072 - impl details: CP merge pass info | |
| 61 // 0x00040000 | 262144 - impl details: CP index maps | |
| 62 // 0x00080000 | 524288 - impl details: modified CP index values | |
| 63 // 0x00100000 | 1048576 - impl details: vtable updates | |
| 64 // 0x00200000 | 2097152 - impl details: itable updates | |
| 65 // 0x00400000 | 4194304 - impl details: constant pool cache updates | |
| 66 // 0x00800000 | 8388608 - impl details: methodComparator info | |
| 67 // 0x01000000 | 16777216 - impl details: nmethod evolution info | |
| 68 // 0x02000000 | 33554432 - impl details: annotation updates | |
| 69 // 0x04000000 | 67108864 - impl details: StackMapTable updates | |
| 70 // 0x08000000 | 134217728 - impl details: OopMapCache updates | |
| 71 // 0x10000000 | 268435456 - unused | |
| 72 // 0x20000000 | 536870912 - unused | |
| 73 // 0x40000000 | 1073741824 - unused | |
| 74 // 0x80000000 | 2147483648 - unused | |
| 75 | |
| 76 // Macro for checking if TraceRedefineClasses has a specific bit | |
| 77 // enabled. Returns true if the bit specified by level is set. | |
| 78 #define RC_TRACE_ENABLED(level) ((TraceRedefineClasses & level) != 0) | |
| 79 | |
| 80 // Macro for checking if TraceRedefineClasses has one or more bits | |
| 81 // set in a range of bit values. Returns true if one or more bits | |
| 82 // is set in the range from low..high inclusive. Assumes that low | |
| 83 // and high are single bit values. | |
| 84 // | |
| 85 // ((high << 1) - 1) | |
| 86 // Yields a mask that removes bits greater than the high bit value. | |
| 87 // This algorithm doesn't work with highest bit. | |
| 88 // ~(low - 1) | |
| 89 // Yields a mask that removes bits lower than the low bit value. | |
| 90 #define RC_TRACE_IN_RANGE(low, high) \ | |
| 91 (((TraceRedefineClasses & ((high << 1) - 1)) & ~(low - 1)) != 0) | |
| 92 | |
| 93 // Note: The ResourceMark is to cleanup resource allocated args. | |
| 94 // The "do {...} while (0)" is so we can use semi-colon at end of RC_TRACE(). | |
| 95 #define RC_TRACE(level, args) do { \ | |
| 96 if (RC_TRACE_ENABLED(level)) { \ | |
| 97 ResourceMark rm; \ | |
| 98 tty->print("RedefineClasses-0x%x: ", level); \ | |
| 99 tty->print_cr args; \ | |
| 100 } \ | |
| 101 } while (0) | |
| 102 | |
| 103 #define RC_TRACE_NO_CR(level, args) do { \ | |
| 104 if (RC_TRACE_ENABLED(level)) { \ | |
| 105 ResourceMark rm; \ | |
| 106 tty->print("RedefineClasses-0x%x: ", level); \ | |
| 107 tty->print args; \ | |
| 108 } \ | |
| 109 } while (0) | |
| 110 | |
| 111 #define RC_TRACE_WITH_THREAD(level, thread, args) do { \ | |
| 112 if (RC_TRACE_ENABLED(level)) { \ | |
| 113 ResourceMark rm(thread); \ | |
| 114 tty->print("RedefineClasses-0x%x: ", level); \ | |
| 115 tty->print_cr args; \ | |
| 116 } \ | |
| 117 } while (0) | |
| 118 | |
| 119 #define RC_TRACE_MESG(args) do { \ | |
| 120 ResourceMark rm; \ | |
| 121 tty->print("RedefineClasses: "); \ | |
| 122 tty->print_cr args; \ | |
| 123 } while (0) | |
| 124 | |
| 125 // Timer support macros. Only do timer operations if timer tracing is enabled. | |
| 126 // The "do {...} while (0)" is so we can use semi-colon at end of the macro. | |
| 127 #define RC_TIMER_START(t) do { \ | |
| 128 if (RC_TRACE_ENABLED(0x00000004)) { \ | |
| 129 t.start(); \ | |
| 130 } \ | |
| 131 } while (0) | |
| 132 #define RC_TIMER_STOP(t) do { \ | |
| 133 if (RC_TRACE_ENABLED(0x00000004)) { \ | |
| 134 t.stop(); \ | |
| 135 } \ | |
| 136 } while (0) | |
| 137 | |
| 138 #endif // SHARE_VM_PRIMS_JVMTIREDEFINECLASSESTRACE_HPP |
