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annotate src/share/vm/runtime/dtraceJSDT.cpp @ 196:d1605aabd0a1 jdk7-b30

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6719955: Update copyright year Summary: Update copyright year for files that have been modified in 2008 Reviewed-by: ohair, tbell
author xdono
date Wed, 02 Jul 2008 12:55:16 -0700
parents 018d5b58dd4f
children 45463a04ca27
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1 /*
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2 * Copyright 1997-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 #include "incls/_precompiled.incl"
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26 #include "incls/_dtraceJSDT.cpp.incl"
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27
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28 #ifdef HAVE_DTRACE_H
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29
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30 jlong DTraceJSDT::activate(
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31 jint version, jstring module_name, jint providers_count,
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32 JVM_DTraceProvider* providers, TRAPS) {
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33
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34 size_t count = 0;
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35 RegisteredProbes* probes = NULL;
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36
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37 if (!is_supported()) {
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38 return 0;
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39 }
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40
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41 assert(module_name != NULL, "valid module name");
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42 assert(providers != NULL, "valid provider array");
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43
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44 for (int i = 0; i < providers_count; ++i) {
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45 count += providers[i].probe_count;
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46 }
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47 probes = new RegisteredProbes(count);
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48 count = 0;
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49
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50 for (int i = 0; i < providers_count; ++i) {
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51 assert(providers[i].name != NULL, "valid provider name");
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52 assert(providers[i].probe_count == 0 || providers[i].probes != NULL,
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53 "valid probe count");
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54 for (int j = 0; j < providers[i].probe_count; ++j) {
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55 JVM_DTraceProbe* probe = &(providers[i].probes[j]);
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56 assert(probe != NULL, "valid probe");
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57 assert(probe->method != NULL, "valid method");
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58 assert(probe->name != NULL, "valid probe name");
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59 assert(probe->function != NULL, "valid probe function spec");
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60 methodHandle h_method =
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61 methodHandle(THREAD, JNIHandles::resolve_jmethod_id(probe->method));
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62 nmethod* nm = AdapterHandlerLibrary::create_dtrace_nmethod(h_method);
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63 h_method()->set_not_compilable(CompLevel_highest_tier);
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64 h_method()->set_code(h_method, nm);
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65 probes->nmethod_at_put(count++, nm);
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66 }
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67 }
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68
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69 int handle = pd_activate((void*)probes,
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70 module_name, providers_count, providers);
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71 if (handle <= 0) {
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72 delete probes;
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73 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(),
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74 "Unable to register DTrace probes (internal error).");
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75 }
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76 probes->set_helper_handle(handle);
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77 return RegisteredProbes::toOpaqueProbes(probes);
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78 }
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79
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80 jboolean DTraceJSDT::is_probe_enabled(jmethodID method) {
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81 methodOop m = JNIHandles::resolve_jmethod_id(method);
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82 return nativeInstruction_at(m->code()->trap_address())->is_dtrace_trap();
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83 }
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84
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85 void DTraceJSDT::dispose(OpaqueProbes probes) {
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86 RegisteredProbes* p = RegisteredProbes::toRegisteredProbes(probes);
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87 if (probes != -1 && p != NULL) {
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88 pd_dispose(p->helper_handle());
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89 delete p;
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90 }
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91 }
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92
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93 jboolean DTraceJSDT::is_supported() {
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94 return pd_is_supported();
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95 }
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96
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97 #else // HAVE_DTRACE_H
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98
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99 jlong DTraceJSDT::activate(
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100 jint version, jstring module_name, jint providers_count,
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101 JVM_DTraceProvider* providers, TRAPS) {
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102 return 0;
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103 }
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104
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105 jboolean DTraceJSDT::is_probe_enabled(jmethodID method) {
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106 return false;
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107 }
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108
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109 void DTraceJSDT::dispose(OpaqueProbes probes) {
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110 return;
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111 }
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112
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113 jboolean DTraceJSDT::is_supported() {
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114 return false;
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115 }
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116
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117 #endif // ndef HAVE_DTRACE_H