Mercurial > hg > graal-compiler
annotate src/share/vm/prims/jvmtiRedefineClassesTrace.hpp @ 1711:a6bff45449bc
6973570: OrderAccess::storestore() scales poorly on multi-socket x64 and sparc: cache-line ping-ponging
Summary: volatile store to static variable removed in favour of a volatile store to stack to avoid excessive cache coherency traffic; verified that the volatile store is not elided by any of our current compilers.
Reviewed-by: dholmes, dice, jcoomes, kvn
author | ysr |
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date | Tue, 10 Aug 2010 14:53:35 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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13 * accompanied this code). | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 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 | |
45 // 0x00000080 | 128 - unused | |
46 // 0x00000100 | 256 - previous class weak reference addition | |
47 // 0x00000200 | 512 - previous class weak reference mgmt during | |
48 // class unloading checks (GC) | |
49 // 0x00000400 | 1024 - previous class weak reference mgmt during | |
50 // add previous ops (GC) | |
51 // 0x00000800 | 2048 - previous class breakpoint mgmt | |
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6805864: 4/3 Problem with jvmti->redefineClasses: some methods don't get redefined
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52 // 0x00001000 | 4096 - detect calls to obsolete methods |
70998f2e05ef
6805864: 4/3 Problem with jvmti->redefineClasses: some methods don't get redefined
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53 // 0x00002000 | 8192 - fail a guarantee() in addition to detection |
0 | 54 // 0x00004000 | 16384 - unused |
55 // 0x00008000 | 32768 - old/new method matching/add/delete | |
56 // 0x00010000 | 65536 - impl details: CP size info | |
57 // 0x00020000 | 131072 - impl details: CP merge pass info | |
58 // 0x00040000 | 262144 - impl details: CP index maps | |
59 // 0x00080000 | 524288 - impl details: modified CP index values | |
60 // 0x00100000 | 1048576 - impl details: vtable updates | |
61 // 0x00200000 | 2097152 - impl details: itable updates | |
62 // 0x00400000 | 4194304 - impl details: constant pool cache updates | |
63 // 0x00800000 | 8388608 - impl details: methodComparator info | |
64 // 0x01000000 | 16777216 - impl details: nmethod evolution info | |
65 // 0x02000000 | 33554432 - impl details: annotation updates | |
66 // 0x04000000 | 67108864 - impl details: StackMapTable updates | |
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6599425: 4/3 OopMapCache::lookup() can cause later crash or assert() failure
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67 // 0x08000000 | 134217728 - impl details: OopMapCache updates |
0 | 68 // 0x10000000 | 268435456 - unused |
69 // 0x20000000 | 536870912 - unused | |
70 // 0x40000000 | 1073741824 - unused | |
71 // 0x80000000 | 2147483648 - unused | |
72 // | |
73 // Note: The ResourceMark is to cleanup resource allocated args. | |
74 // The "while (0)" is so we can use semi-colon at end of RC_TRACE(). | |
75 #define RC_TRACE(level, args) \ | |
76 if ((TraceRedefineClasses & level) != 0) { \ | |
77 ResourceMark rm; \ | |
78 tty->print("RedefineClasses-0x%x: ", level); \ | |
79 tty->print_cr args; \ | |
80 } while (0) | |
81 | |
82 #define RC_TRACE_WITH_THREAD(level, thread, args) \ | |
83 if ((TraceRedefineClasses & level) != 0) { \ | |
84 ResourceMark rm(thread); \ | |
85 tty->print("RedefineClasses-0x%x: ", level); \ | |
86 tty->print_cr args; \ | |
87 } while (0) | |
88 | |
89 #define RC_TRACE_MESG(args) \ | |
90 { \ | |
91 ResourceMark rm; \ | |
92 tty->print("RedefineClasses: "); \ | |
93 tty->print_cr args; \ | |
94 } while (0) | |
95 | |
96 // Macro for checking if TraceRedefineClasses has a specific bit | |
97 // enabled. Returns true if the bit specified by level is set. | |
98 #define RC_TRACE_ENABLED(level) ((TraceRedefineClasses & level) != 0) | |
99 | |
100 // Macro for checking if TraceRedefineClasses has one or more bits | |
101 // set in a range of bit values. Returns true if one or more bits | |
102 // is set in the range from low..high inclusive. Assumes that low | |
103 // and high are single bit values. | |
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) |