1 /*
2 * Copyright (c) 2003, 2008, 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 // RedefineClasses tracing support via the TraceRedefineClasses
26 // option. A bit is assigned to each group of trace messages.
27 // Groups of messages are individually selectable. We have to use
28 // decimal values on the command line since the command option
29 // parsing logic doesn't like non-decimal numerics. The HEX values
30 // are used in the actual RC_TRACE() calls for sanity. To achieve
31 // the old cumulative behavior, pick the level after the one in
32 // which you are interested and subtract one, e.g., 33554431 will
33 // print every tracing message.
34 //
35 // 0x00000000 | 0 - default; no tracing messages
36 // 0x00000001 | 1 - name each target class before loading, after
37 // loading and after redefinition is completed
38 // 0x00000002 | 2 - print info if parsing, linking or
39 // verification throws an exception
40 // 0x00000004 | 4 - print timer info for the VM operation
41 // 0x00000008 | 8 - print subclass counter updates
42 // 0x00000010 | 16 - unused
43 // 0x00000020 | 32 - unused
44 // 0x00000040 | 64 - unused
104 //
105 // ((high << 1) - 1)
106 // Yields a mask that removes bits greater than the high bit value.
107 // This algorithm doesn't work with highest bit.
108 // ~(low - 1)
109 // Yields a mask that removes bits lower than the low bit value.
110 #define RC_TRACE_IN_RANGE(low, high) \
111 (((TraceRedefineClasses & ((high << 1) - 1)) & ~(low - 1)) != 0)
112
113 // Timer support macros. Only do timer operations if timer tracing
114 // is enabled. The "while (0)" is so we can use semi-colon at end of
115 // the macro.
116 #define RC_TIMER_START(t) \
117 if (RC_TRACE_ENABLED(0x00000004)) { \
118 t.start(); \
119 } while (0)
120 #define RC_TIMER_STOP(t) \
121 if (RC_TRACE_ENABLED(0x00000004)) { \
122 t.stop(); \
123 } while (0)
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1 /*
2 * Copyright (c) 2003, 2010, 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
107 //
108 // ((high << 1) - 1)
109 // Yields a mask that removes bits greater than the high bit value.
110 // This algorithm doesn't work with highest bit.
111 // ~(low - 1)
112 // Yields a mask that removes bits lower than the low bit value.
113 #define RC_TRACE_IN_RANGE(low, high) \
114 (((TraceRedefineClasses & ((high << 1) - 1)) & ~(low - 1)) != 0)
115
116 // Timer support macros. Only do timer operations if timer tracing
117 // is enabled. The "while (0)" is so we can use semi-colon at end of
118 // the macro.
119 #define RC_TIMER_START(t) \
120 if (RC_TRACE_ENABLED(0x00000004)) { \
121 t.start(); \
122 } while (0)
123 #define RC_TIMER_STOP(t) \
124 if (RC_TRACE_ENABLED(0x00000004)) { \
125 t.stop(); \
126 } while (0)
127
128 #endif // SHARE_VM_PRIMS_JVMTIREDEFINECLASSESTRACE_HPP
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