Fri, 25 Jan 2013 10:04:08 -0500
8000692: Remove old KERNEL code
Summary: Removed depreciated kernel VM source code from hotspot VM
Reviewed-by: dholmes, acorn
1 /*
2 * Copyright (c) 1997, 2012, 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 */
25 #include "precompiled.hpp"
26 #include "classfile/javaClasses.hpp"
27 #include "code/codeBlob.hpp"
28 #include "memory/allocation.hpp"
29 #include "prims/jvm.h"
30 #include "runtime/dtraceJSDT.hpp"
31 #include "runtime/jniHandles.hpp"
32 #include "runtime/os.hpp"
33 #include "utilities/exceptions.hpp"
34 #include "utilities/globalDefinitions.hpp"
35 #include "utilities/utf8.hpp"
37 #ifdef HAVE_DTRACE_H
39 jlong DTraceJSDT::activate(
40 jint version, jstring module_name, jint providers_count,
41 JVM_DTraceProvider* providers, TRAPS) {
43 size_t count = 0;
44 RegisteredProbes* probes = NULL;
46 if (!is_supported()) {
47 return 0;
48 }
50 assert(module_name != NULL, "valid module name");
51 assert(providers != NULL, "valid provider array");
53 for (int i = 0; i < providers_count; ++i) {
54 count += providers[i].probe_count;
55 }
56 probes = new RegisteredProbes(count);
57 count = 0;
59 for (int i = 0; i < providers_count; ++i) {
60 assert(providers[i].name != NULL, "valid provider name");
61 assert(providers[i].probe_count == 0 || providers[i].probes != NULL,
62 "valid probe count");
63 for (int j = 0; j < providers[i].probe_count; ++j) {
64 JVM_DTraceProbe* probe = &(providers[i].probes[j]);
65 assert(probe != NULL, "valid probe");
66 assert(probe->method != NULL, "valid method");
67 assert(probe->name != NULL, "valid probe name");
68 assert(probe->function != NULL, "valid probe function spec");
69 methodHandle h_method =
70 methodHandle(THREAD, Method::resolve_jmethod_id(probe->method));
71 nmethod* nm = AdapterHandlerLibrary::create_dtrace_nmethod(h_method);
72 if (nm == NULL) {
73 delete probes;
74 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(),
75 "Unable to register DTrace probes (CodeCache: no room for DTrace nmethods).");
76 }
77 h_method()->set_not_compilable();
78 h_method()->set_code(h_method, nm);
79 probes->nmethod_at_put(count++, nm);
80 }
81 }
83 int handle = pd_activate((void*)probes,
84 module_name, providers_count, providers);
85 if (handle < 0) {
86 delete probes;
87 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(),
88 "Unable to register DTrace probes (internal error).");
89 }
90 probes->set_helper_handle(handle);
91 return RegisteredProbes::toOpaqueProbes(probes);
92 }
94 jboolean DTraceJSDT::is_probe_enabled(jmethodID method) {
95 Method* m = Method::resolve_jmethod_id(method);
96 return nativeInstruction_at(m->code()->trap_address())->is_dtrace_trap();
97 }
99 void DTraceJSDT::dispose(OpaqueProbes probes) {
100 RegisteredProbes* p = RegisteredProbes::toRegisteredProbes(probes);
101 if (probes != -1 && p != NULL) {
102 pd_dispose(p->helper_handle());
103 delete p;
104 }
105 }
107 jboolean DTraceJSDT::is_supported() {
108 return pd_is_supported();
109 }
111 #else // HAVE_DTRACE_H
113 jlong DTraceJSDT::activate(
114 jint version, jstring module_name, jint providers_count,
115 JVM_DTraceProvider* providers, TRAPS) {
116 return 0;
117 }
119 jboolean DTraceJSDT::is_probe_enabled(jmethodID method) {
120 return false;
121 }
123 void DTraceJSDT::dispose(OpaqueProbes probes) {
124 return;
125 }
127 jboolean DTraceJSDT::is_supported() {
128 return false;
129 }
131 #endif // ndef HAVE_DTRACE_H