jdk8-mips64-public/hotspot: src/share/vm/prims/jvmtiRedefineClassesTrace.hpp@833b0f92429a (annotated)

src/share/vm/prims/jvmtiRedefineClassesTrace.hpp@833b0f92429a (annotated)

src/share/vm/prims/jvmtiRedefineClassesTrace.hpp

Wed, 27 Aug 2014 08:19:12 -0400

author: zgu
date: Wed, 27 Aug 2014 08:19:12 -0400
changeset 7074: 833b0f92429a
parent 4871: 6b19fe41b577
child 6876: 710a3c8b516e
permissions: -rw-r--r--

8046598: Scalable Native memory tracking development
Summary: Enhance scalability of native memory tracking
Reviewed-by: coleenp, ctornqvi, gtriantafill

 /*
  * Copyright (c) 2003, 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #ifndef SHARE_VM_PRIMS_JVMTIREDEFINECLASSESTRACE_HPP
 #define SHARE_VM_PRIMS_JVMTIREDEFINECLASSESTRACE_HPP
 // 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 - detect calls to obsolete methods
 //    0x00002000 |       8192 - fail a guarantee() in addition to detection
 //    0x00004000 |      16384 - detect old/obsolete methods in metadata
 //    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 - impl details: OopMapCache updates
 //    0x10000000 |  268435456 - unused
 //    0x20000000 |  536870912 - unused
 //    0x40000000 | 1073741824 - unused
 //    0x80000000 | 2147483648 - unused
 // 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)
 // Note: The ResourceMark is to cleanup resource allocated args.
 // The "do {...} while (0)" is so we can use semi-colon at end of RC_TRACE().
 #define RC_TRACE(level, args) do { \
   if (RC_TRACE_ENABLED(level)) { \
     ResourceMark rm; \
     tty->print("RedefineClasses-0x%x: ", level); \
     tty->print_cr args; \
   } \
 } while (0)
 #define RC_TRACE_NO_CR(level, args) do { \
   if (RC_TRACE_ENABLED(level)) { \
     ResourceMark rm; \
     tty->print("RedefineClasses-0x%x: ", level); \
     tty->print args; \
   } \
 } while (0)
 #define RC_TRACE_WITH_THREAD(level, thread, args) do { \
   if (RC_TRACE_ENABLED(level)) { \
     ResourceMark rm(thread); \
     tty->print("RedefineClasses-0x%x: ", level); \
     tty->print_cr args; \
   } \
 } while (0)
 #define RC_TRACE_MESG(args) do { \
   ResourceMark rm; \
   tty->print("RedefineClasses: "); \
   tty->print_cr args; \
 } while (0)
 // Timer support macros. Only do timer operations if timer tracing is enabled.
 // The "do {...} while (0)" is so we can use semi-colon at end of the macro.
 #define RC_TIMER_START(t) do { \
   if (RC_TRACE_ENABLED(0x00000004)) { \
     t.start(); \
   } \
 } while (0)
 #define RC_TIMER_STOP(t) do { \
   if (RC_TRACE_ENABLED(0x00000004)) { \
     t.stop(); \
   } \
 } while (0)
 #endif // SHARE_VM_PRIMS_JVMTIREDEFINECLASSESTRACE_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/prims/jvmtiRedefineClassesTrace.hpp@833b0f92429a (annotated)

src/share/vm/prims/jvmtiRedefineClassesTrace.hpp