jdk8-mips64-public/hotspot: src/share/vm/runtime/dtraceJSDT.cpp@d5d065957597 (annotated)

src/share/vm/runtime/dtraceJSDT.cpp@d5d065957597 (annotated)

src/share/vm/runtime/dtraceJSDT.cpp

Fri, 03 Sep 2010 17:51:07 -0700

author: iveresov
date: Fri, 03 Sep 2010 17:51:07 -0700
changeset 2138: d5d065957597
parent 1907: c18cbe5936b8
child 2314: f95d63e2154a
permissions: -rw-r--r--

6953144: Tiered compilation
Summary: Infrastructure for tiered compilation support (interpreter + c1 + c2) for 32 and 64 bit. Simple tiered policy implementation.
Reviewed-by: kvn, never, phh, twisti

 /*
  * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "incls/_precompiled.incl"
 #include "incls/_dtraceJSDT.cpp.incl"
 #ifdef HAVE_DTRACE_H
 jlong DTraceJSDT::activate(
     jint version, jstring module_name, jint providers_count,
     JVM_DTraceProvider* providers, TRAPS) {
   size_t count = 0;
   RegisteredProbes* probes = NULL;
   if (!is_supported()) {
     return 0;
   }
   assert(module_name != NULL, "valid module name");
   assert(providers != NULL, "valid provider array");
   for (int i = 0; i < providers_count; ++i) {
     count += providers[i].probe_count;
   }
   probes = new RegisteredProbes(count);
   count = 0;
   for (int i = 0; i < providers_count; ++i) {
     assert(providers[i].name != NULL, "valid provider name");
     assert(providers[i].probe_count == 0 || providers[i].probes != NULL,
            "valid probe count");
     for (int j = 0; j < providers[i].probe_count; ++j) {
       JVM_DTraceProbe* probe = &(providers[i].probes[j]);
       assert(probe != NULL, "valid probe");
       assert(probe->method != NULL, "valid method");
       assert(probe->name != NULL, "valid probe name");
       assert(probe->function != NULL, "valid probe function spec");
       methodHandle h_method =
         methodHandle(THREAD, JNIHandles::resolve_jmethod_id(probe->method));
       nmethod* nm = AdapterHandlerLibrary::create_dtrace_nmethod(h_method);
       if (nm == NULL) {
         delete probes;
         THROW_MSG_0(vmSymbols::java_lang_RuntimeException(),
           "Unable to register DTrace probes (CodeCache: no room for DTrace nmethods).");
       }
       h_method()->set_not_compilable();
       h_method()->set_code(h_method, nm);
       probes->nmethod_at_put(count++, nm);
     }
   }
   int handle = pd_activate((void*)probes,
     module_name, providers_count, providers);
   if (handle <= 0) {
     delete probes;
     THROW_MSG_0(vmSymbols::java_lang_RuntimeException(),
       "Unable to register DTrace probes (internal error).");
   }
   probes->set_helper_handle(handle);
   return RegisteredProbes::toOpaqueProbes(probes);
 }
 jboolean DTraceJSDT::is_probe_enabled(jmethodID method) {
   methodOop m = JNIHandles::resolve_jmethod_id(method);
   return nativeInstruction_at(m->code()->trap_address())->is_dtrace_trap();
 }
 void DTraceJSDT::dispose(OpaqueProbes probes) {
   RegisteredProbes* p = RegisteredProbes::toRegisteredProbes(probes);
   if (probes != -1 && p != NULL) {
     pd_dispose(p->helper_handle());
     delete p;
   }
 }
 jboolean DTraceJSDT::is_supported() {
   return pd_is_supported();
 }
 #else // HAVE_DTRACE_H
 jlong DTraceJSDT::activate(
     jint version, jstring module_name, jint providers_count,
     JVM_DTraceProvider* providers, TRAPS) {
   return 0;
 }
 jboolean DTraceJSDT::is_probe_enabled(jmethodID method) {
   return false;
 }
 void DTraceJSDT::dispose(OpaqueProbes probes) {
   return;
 }
 jboolean DTraceJSDT::is_supported() {
   return false;
 }
 #endif // ndef HAVE_DTRACE_H

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/runtime/dtraceJSDT.cpp@d5d065957597 (annotated)

src/share/vm/runtime/dtraceJSDT.cpp