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annotate src/share/vm/runtime/dtraceJSDT.hpp @ 1972:f95d63e2154a

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6989984: Use standard include model for Hospot Summary: Replaced MakeDeps and the includeDB files with more standardized solutions. Reviewed-by: coleenp, kvn, kamg
author stefank
date Tue, 23 Nov 2010 13:22:55 -0800
parents c18cbe5936b8
children b92c45f2bc75
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1 /*
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2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_RUNTIME_DTRACEJSDT_HPP
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26 #define SHARE_VM_RUNTIME_DTRACEJSDT_HPP
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27
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28 #include "code/nmethod.hpp"
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29 #ifdef TARGET_ARCH_x86
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30 # include "nativeInst_x86.hpp"
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31 #endif
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32 #ifdef TARGET_ARCH_sparc
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33 # include "nativeInst_sparc.hpp"
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34 #endif
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35 #ifdef TARGET_ARCH_zero
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36 # include "nativeInst_zero.hpp"
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37 #endif
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38
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39 class RegisteredProbes;
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40 typedef jlong OpaqueProbes;
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41
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42 class DTraceJSDT : AllStatic {
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43 private:
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44
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45 static int pd_activate(void* moduleBaseAddress, jstring module,
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46 jint providers_count, JVM_DTraceProvider* providers);
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47 static void pd_dispose(int handle);
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48 static jboolean pd_is_supported();
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49
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50 public:
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51
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52 static OpaqueProbes activate(
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53 jint version, jstring module_name, jint providers_count,
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54 JVM_DTraceProvider* providers, TRAPS);
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55 static jboolean is_probe_enabled(jmethodID method);
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56 static void dispose(OpaqueProbes handle);
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57 static jboolean is_supported();
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58 };
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59
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60 class RegisteredProbes : public CHeapObj {
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61 private:
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62 nmethod** _nmethods; // all the probe methods
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63 size_t _count; // number of probe methods
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64 int _helper_handle; // DTrace-assigned identifier
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65
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66 public:
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67 RegisteredProbes(size_t count) {
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68 _count = count;
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69 _nmethods = NEW_C_HEAP_ARRAY(nmethod*, count);
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70 }
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71
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72 ~RegisteredProbes() {
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73 for (size_t i = 0; i < _count; ++i) {
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74 // Let the sweeper reclaim it
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75 _nmethods[i]->make_not_entrant();
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76 _nmethods[i]->method()->clear_code();
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77 }
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78 FREE_C_HEAP_ARRAY(nmethod*, _nmethods);
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79 _nmethods = NULL;
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80 _count = 0;
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81 }
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82
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83 static RegisteredProbes* toRegisteredProbes(OpaqueProbes p) {
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84 return (RegisteredProbes*)(intptr_t)p;
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85 }
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86
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87 static OpaqueProbes toOpaqueProbes(RegisteredProbes* p) {
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88 return (OpaqueProbes)(intptr_t)p;
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89 }
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90
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91 void set_helper_handle(int handle) { _helper_handle = handle; }
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92 int helper_handle() const { return _helper_handle; }
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93
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94 nmethod* nmethod_at(size_t i) {
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95 assert(i >= 0 && i < _count, "bad nmethod index");
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96 return _nmethods[i];
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97 }
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98
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99 void nmethod_at_put(size_t i, nmethod* nm) {
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100 assert(i >= 0 && i < _count, "bad nmethod index");
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101 _nmethods[i] = nm;
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102 }
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103 };
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104
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105 #endif // SHARE_VM_RUNTIME_DTRACEJSDT_HPP