Mercurial > hg > graal-compiler
annotate src/share/vm/prims/jvmtiTrace.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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2 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved. |
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5 * This code is free software; you can redistribute it and/or modify it | |
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7 * published by the Free Software Foundation. | |
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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). | |
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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, | |
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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 /////////////////////////////////////////////////////////////// | |
26 // | |
27 // class JvmtiTrace | |
28 // | |
29 // Support for JVMTI tracing code | |
30 // | |
31 | |
32 // Support tracing except in product build on the client compiler | |
33 #ifndef PRODUCT | |
34 #define JVMTI_TRACE 1 | |
35 #else | |
36 #ifdef COMPILER2 | |
37 #define JVMTI_TRACE 1 | |
38 #endif | |
39 #endif | |
40 | |
41 #ifdef JVMTI_TRACE | |
42 | |
43 class JvmtiTrace : AllStatic { | |
44 | |
45 static bool _initialized; | |
46 static bool _on; | |
47 static bool _trace_event_controller; | |
48 static jbyte _trace_flags[]; | |
49 static jbyte _event_trace_flags[]; | |
50 static const char* _event_names[]; | |
51 static jint _max_function_index; | |
52 static jint _max_event_index; | |
53 static short _exclude_functions[]; | |
54 static const char* _function_names[]; | |
55 | |
56 public: | |
57 | |
58 enum { | |
59 SHOW_IN = 01, | |
60 SHOW_OUT = 02, | |
61 SHOW_ERROR = 04, | |
62 SHOW_IN_DETAIL = 010, | |
63 SHOW_OUT_DETAIL = 020, | |
64 SHOW_EVENT_TRIGGER = 040, | |
65 SHOW_EVENT_SENT = 0100 | |
66 }; | |
67 | |
68 static bool tracing() { return _on; } | |
69 static bool trace_event_controller() { return _trace_event_controller; } | |
70 static jbyte trace_flags(int num) { return _trace_flags[num]; } | |
71 static jbyte event_trace_flags(int num) { return _event_trace_flags[num]; } | |
72 static const char* function_name(int num) { return _function_names[num]; } // To Do: add range checking | |
73 | |
74 static const char* event_name(int num) { | |
75 static char* ext_event_name = (char*)"(extension event)"; | |
76 if (num >= JVMTI_MIN_EVENT_TYPE_VAL && num <= JVMTI_MAX_EVENT_TYPE_VAL) { | |
77 return _event_names[num]; | |
78 } else { | |
79 return ext_event_name; | |
80 } | |
81 } | |
82 | |
83 static const char* enum_name(const char** names, const jint* values, jint value); | |
84 | |
85 static void initialize(); | |
86 static void shutdown(); | |
87 | |
88 // return a valid string no matter what state the thread is in | |
89 static const char *safe_get_thread_name(Thread *thread); | |
90 | |
91 // return the name of the current thread | |
92 static const char *safe_get_current_thread_name(); | |
93 | |
94 // return a valid string no matter what the state of k_mirror | |
95 static const char *get_class_name(oop k_mirror); | |
96 }; | |
97 | |
98 #endif /*JVMTI_TRACE */ |