/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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
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*/
// 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
// 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
//
// Note: The ResourceMark is to cleanup resource allocated args.
// The "while (0)" is so we can use semi-colon at end of RC_TRACE().
if ((TraceRedefineClasses & level) != 0) { \
ResourceMark rm; \
} while (0)
if ((TraceRedefineClasses & level) != 0) { \
ResourceMark rm; \
} while (0)
if ((TraceRedefineClasses & level) != 0) { \
} while (0)
{ \
ResourceMark rm; \
} while (0)
// Macro for checking if TraceRedefineClasses has a specific bit
// enabled. Returns true if the bit specified by level is set.
// 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.
// 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)
#endif // SHARE_VM_PRIMS_JVMTIREDEFINECLASSESTRACE_HPP