Mercurial > hg > graal-compiler
view src/share/vm/prims/jvmtiRedefineClassesTrace.hpp @ 13000:209aa13ab8c0
8024927: Nashorn performance regression with CompressedOops
Summary: Allocate compressed class space at end of Java heap. For small heap sizes, without CDS, save some space so compressed classes can have the same favorable compression as oops
Reviewed-by: stefank, hseigel, goetz
author | coleenp |
---|---|
date | Fri, 25 Oct 2013 15:19:29 -0400 |
parents | 6b19fe41b577 |
children |
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/* * 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