kamg@551: /*
coleenp@4037:  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
kamg@551:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
kamg@551:  *
kamg@551:  * This code is free software; you can redistribute it and/or modify it
kamg@551:  * under the terms of the GNU General Public License version 2 only, as
kamg@551:  * published by the Free Software Foundation.
kamg@551:  *
kamg@551:  * This code is distributed in the hope that it will be useful, but WITHOUT
kamg@551:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
kamg@551:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
kamg@551:  * version 2 for more details (a copy is included in the LICENSE file that
kamg@551:  * accompanied this code).
kamg@551:  *
kamg@551:  * You should have received a copy of the GNU General Public License version
kamg@551:  * 2 along with this work; if not, write to the Free Software Foundation,
kamg@551:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
kamg@551:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
kamg@551:  *
kamg@551:  */
kamg@551: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "classfile/javaClasses.hpp"
stefank@2314: #include "code/codeBlob.hpp"
stefank@2314: #include "memory/allocation.hpp"
stefank@2314: #include "prims/jvm.h"
stefank@2314: #include "runtime/dtraceJSDT.hpp"
stefank@2314: #include "runtime/jniHandles.hpp"
stefank@2314: #include "runtime/os.hpp"
stefank@2314: #include "utilities/exceptions.hpp"
stefank@2314: #include "utilities/globalDefinitions.hpp"
stefank@2314: #include "utilities/utf8.hpp"
kamg@551: 
kamg@551: #ifdef HAVE_DTRACE_H
kamg@551: 
kamg@551: jlong DTraceJSDT::activate(
kamg@551:     jint version, jstring module_name, jint providers_count,
kamg@551:     JVM_DTraceProvider* providers, TRAPS) {
kamg@551: 
kamg@551:   size_t count = 0;
kamg@551:   RegisteredProbes* probes = NULL;
kamg@551: 
kamg@551:   if (!is_supported()) {
kamg@551:     return 0;
kamg@551:   }
kamg@551: 
kamg@551:   assert(module_name != NULL, "valid module name");
kamg@551:   assert(providers != NULL, "valid provider array");
kamg@551: 
kamg@551:   for (int i = 0; i < providers_count; ++i) {
kamg@551:     count += providers[i].probe_count;
kamg@551:   }
kamg@551:   probes = new RegisteredProbes(count);
kamg@551:   count = 0;
kamg@551: 
kamg@551:   for (int i = 0; i < providers_count; ++i) {
kamg@551:     assert(providers[i].name != NULL, "valid provider name");
kamg@551:     assert(providers[i].probe_count == 0 || providers[i].probes != NULL,
kamg@551:            "valid probe count");
kamg@551:     for (int j = 0; j < providers[i].probe_count; ++j) {
kamg@551:       JVM_DTraceProbe* probe = &(providers[i].probes[j]);
kamg@551:       assert(probe != NULL, "valid probe");
kamg@551:       assert(probe->method != NULL, "valid method");
kamg@551:       assert(probe->name != NULL, "valid probe name");
kamg@551:       assert(probe->function != NULL, "valid probe function spec");
kamg@551:       methodHandle h_method =
coleenp@4037:         methodHandle(THREAD, Method::resolve_jmethod_id(probe->method));
kamg@551:       nmethod* nm = AdapterHandlerLibrary::create_dtrace_nmethod(h_method);
kvn@1177:       if (nm == NULL) {
kvn@1177:         delete probes;
kvn@1177:         THROW_MSG_0(vmSymbols::java_lang_RuntimeException(),
kvn@1177:           "Unable to register DTrace probes (CodeCache: no room for DTrace nmethods).");
kvn@1177:       }
iveresov@2138:       h_method()->set_not_compilable();
kamg@551:       h_method()->set_code(h_method, nm);
kamg@551:       probes->nmethod_at_put(count++, nm);
kamg@551:     }
kamg@551:   }
kamg@551: 
kamg@551:   int handle = pd_activate((void*)probes,
kamg@551:     module_name, providers_count, providers);
kamg@3554:   if (handle < 0) {
kamg@551:     delete probes;
kamg@551:     THROW_MSG_0(vmSymbols::java_lang_RuntimeException(),
kamg@551:       "Unable to register DTrace probes (internal error).");
kamg@551:   }
kamg@551:   probes->set_helper_handle(handle);
kamg@551:   return RegisteredProbes::toOpaqueProbes(probes);
kamg@551: }
kamg@551: 
kamg@551: jboolean DTraceJSDT::is_probe_enabled(jmethodID method) {
coleenp@4037:   Method* m = Method::resolve_jmethod_id(method);
kamg@551:   return nativeInstruction_at(m->code()->trap_address())->is_dtrace_trap();
kamg@551: }
kamg@551: 
kamg@551: void DTraceJSDT::dispose(OpaqueProbes probes) {
kamg@551:   RegisteredProbes* p = RegisteredProbes::toRegisteredProbes(probes);
kamg@551:   if (probes != -1 && p != NULL) {
kamg@551:     pd_dispose(p->helper_handle());
kamg@551:     delete p;
kamg@551:   }
kamg@551: }
kamg@551: 
kamg@551: jboolean DTraceJSDT::is_supported() {
kamg@551:   return pd_is_supported();
kamg@551: }
kamg@551: 
kamg@551: #else // HAVE_DTRACE_H
kamg@551: 
kamg@551: jlong DTraceJSDT::activate(
kamg@551:     jint version, jstring module_name, jint providers_count,
kamg@551:     JVM_DTraceProvider* providers, TRAPS) {
kamg@551:   return 0;
kamg@551: }
kamg@551: 
kamg@551: jboolean DTraceJSDT::is_probe_enabled(jmethodID method) {
kamg@551:   return false;
kamg@551: }
kamg@551: 
kamg@551: void DTraceJSDT::dispose(OpaqueProbes probes) {
kamg@551:   return;
kamg@551: }
kamg@551: 
kamg@551: jboolean DTraceJSDT::is_supported() {
kamg@551:   return false;
kamg@551: }
kamg@551: 
kamg@551: #endif // ndef HAVE_DTRACE_H