src/hotspot/share/services/attachListener.cpp
author dholmes
Mon, 11 Mar 2019 21:26:19 -0400
changeset 54065 f984aca565c1
parent 53858 e7cf035682e3
child 54786 ebf733a324d4
permissions -rw-r--r--
8219721: jcmd from earlier release will hang attaching to VM with JDK-8215622 applied Summary: fix compatibility issue caused by jmap update of 8215622 Reviewed-by: dholmes, ysuenaga, phh, sspitsyn Contributed-by: zanglin5@jd.com
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/*
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 * Copyright (c) 2005, 2019, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "classfile/javaClasses.hpp"
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#include "classfile/systemDictionary.hpp"
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#include "gc/shared/gcVMOperations.hpp"
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#include "memory/resourceArea.hpp"
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#include "oops/oop.inline.hpp"
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#include "oops/typeArrayOop.inline.hpp"
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#include "prims/jvmtiExport.hpp"
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#include "runtime/arguments.hpp"
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#include "runtime/flags/jvmFlag.hpp"
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#include "runtime/globals.hpp"
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#include "runtime/handles.inline.hpp"
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#include "runtime/java.hpp"
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#include "runtime/javaCalls.hpp"
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#include "runtime/os.hpp"
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#include "services/attachListener.hpp"
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#include "services/diagnosticCommand.hpp"
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#include "services/heapDumper.hpp"
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#include "services/writeableFlags.hpp"
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#include "utilities/debug.hpp"
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#include "utilities/formatBuffer.hpp"
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volatile bool AttachListener::_initialized;
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// Implementation of "properties" command.
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//
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// Invokes VMSupport.serializePropertiesToByteArray to serialize
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// the system properties into a byte array.
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static InstanceKlass* load_and_initialize_klass(Symbol* sh, TRAPS) {
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  Klass* k = SystemDictionary::resolve_or_fail(sh, true, CHECK_NULL);
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  InstanceKlass* ik = InstanceKlass::cast(k);
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  if (ik->should_be_initialized()) {
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    ik->initialize(CHECK_NULL);
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  }
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  return ik;
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}
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static jint get_properties(AttachOperation* op, outputStream* out, Symbol* serializePropertiesMethod) {
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  Thread* THREAD = Thread::current();
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  HandleMark hm;
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  // load VMSupport
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  Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport();
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  InstanceKlass* k = load_and_initialize_klass(klass, THREAD);
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  if (HAS_PENDING_EXCEPTION) {
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    java_lang_Throwable::print(PENDING_EXCEPTION, out);
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    CLEAR_PENDING_EXCEPTION;
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    return JNI_ERR;
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  }
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  // invoke the serializePropertiesToByteArray method
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  JavaValue result(T_OBJECT);
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  JavaCallArguments args;
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  Symbol* signature = vmSymbols::serializePropertiesToByteArray_signature();
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  JavaCalls::call_static(&result,
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                         k,
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                         serializePropertiesMethod,
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                         signature,
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                         &args,
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                         THREAD);
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  if (HAS_PENDING_EXCEPTION) {
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    java_lang_Throwable::print(PENDING_EXCEPTION, out);
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    CLEAR_PENDING_EXCEPTION;
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    return JNI_ERR;
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  }
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  // The result should be a [B
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  oop res = (oop)result.get_jobject();
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  assert(res->is_typeArray(), "just checking");
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  assert(TypeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking");
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  // copy the bytes to the output stream
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  typeArrayOop ba = typeArrayOop(res);
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  jbyte* addr = typeArrayOop(res)->byte_at_addr(0);
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  out->print_raw((const char*)addr, ba->length());
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  return JNI_OK;
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}
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// Implementation of "load" command.
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static jint load_agent(AttachOperation* op, outputStream* out) {
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  // get agent name and options
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  const char* agent = op->arg(0);
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  const char* absParam = op->arg(1);
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  const char* options = op->arg(2);
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  // If loading a java agent then need to ensure that the java.instrument module is loaded
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  if (strcmp(agent, "instrument") == 0) {
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    Thread* THREAD = Thread::current();
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    ResourceMark rm(THREAD);
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    HandleMark hm(THREAD);
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    JavaValue result(T_OBJECT);
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    Handle h_module_name = java_lang_String::create_from_str("java.instrument", THREAD);
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    JavaCalls::call_static(&result,
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                           SystemDictionary::module_Modules_klass(),
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                           vmSymbols::loadModule_name(),
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                           vmSymbols::loadModule_signature(),
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                           h_module_name,
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                           THREAD);
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    if (HAS_PENDING_EXCEPTION) {
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      java_lang_Throwable::print(PENDING_EXCEPTION, out);
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      CLEAR_PENDING_EXCEPTION;
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      return JNI_ERR;
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    }
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  }
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  return JvmtiExport::load_agent_library(agent, absParam, options, out);
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}
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// Implementation of "properties" command.
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// See also: PrintSystemPropertiesDCmd class
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static jint get_system_properties(AttachOperation* op, outputStream* out) {
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  return get_properties(op, out, vmSymbols::serializePropertiesToByteArray_name());
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}
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// Implementation of "agent_properties" command.
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static jint get_agent_properties(AttachOperation* op, outputStream* out) {
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  return get_properties(op, out, vmSymbols::serializeAgentPropertiesToByteArray_name());
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}
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// Implementation of "datadump" command.
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//
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// Raises a SIGBREAK signal so that VM dump threads, does deadlock detection,
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// etc. In theory this command should only post a DataDumpRequest to any
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// JVMTI environment that has enabled this event. However it's useful to
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// trigger the SIGBREAK handler.
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static jint data_dump(AttachOperation* op, outputStream* out) {
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  if (!ReduceSignalUsage) {
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    AttachListener::pd_data_dump();
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  } else {
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    if (JvmtiExport::should_post_data_dump()) {
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      JvmtiExport::post_data_dump();
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    }
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  }
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  return JNI_OK;
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}
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// Implementation of "threaddump" command - essentially a remote ctrl-break
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// See also: ThreadDumpDCmd class
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//
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static jint thread_dump(AttachOperation* op, outputStream* out) {
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  bool print_concurrent_locks = false;
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  bool print_extended_info = false;
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  if (op->arg(0) != NULL) {
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    for (int i = 0; op->arg(0)[i] != 0; ++i) {
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      if (op->arg(0)[i] == 'l') {
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        print_concurrent_locks = true;
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      }
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      if (op->arg(0)[i] == 'e') {
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        print_extended_info = true;
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      }
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    }
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  }
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  // thread stacks
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  VM_PrintThreads op1(out, print_concurrent_locks, print_extended_info);
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  VMThread::execute(&op1);
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  // JNI global handles
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  VM_PrintJNI op2(out);
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  VMThread::execute(&op2);
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  // Deadlock detection
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  VM_FindDeadlocks op3(out);
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  VMThread::execute(&op3);
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  return JNI_OK;
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}
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// A jcmd attach operation request was received, which will now
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// dispatch to the diagnostic commands used for serviceability functions.
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static jint jcmd(AttachOperation* op, outputStream* out) {
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  Thread* THREAD = Thread::current();
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  // All the supplied jcmd arguments are stored as a single
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  // string (op->arg(0)). This is parsed by the Dcmd framework.
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  DCmd::parse_and_execute(DCmd_Source_AttachAPI, out, op->arg(0), ' ', THREAD);
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  if (HAS_PENDING_EXCEPTION) {
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    java_lang_Throwable::print(PENDING_EXCEPTION, out);
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    out->cr();
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    CLEAR_PENDING_EXCEPTION;
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    return JNI_ERR;
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  }
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  return JNI_OK;
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}
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// Implementation of "dumpheap" command.
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// See also: HeapDumpDCmd class
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//
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// Input arguments :-
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//   arg0: Name of the dump file
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//   arg1: "-live" or "-all"
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jint dump_heap(AttachOperation* op, outputStream* out) {
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  const char* path = op->arg(0);
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  if (path == NULL || path[0] == '\0') {
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    out->print_cr("No dump file specified");
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  } else {
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    bool live_objects_only = true;   // default is true to retain the behavior before this change is made
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    const char* arg1 = op->arg(1);
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    if (arg1 != NULL && (strlen(arg1) > 0)) {
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      if (strcmp(arg1, "-all") != 0 && strcmp(arg1, "-live") != 0) {
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        out->print_cr("Invalid argument to dumpheap operation: %s", arg1);
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        return JNI_ERR;
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      }
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      live_objects_only = strcmp(arg1, "-live") == 0;
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    }
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    // Request a full GC before heap dump if live_objects_only = true
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    // This helps reduces the amount of unreachable objects in the dump
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    // and makes it easier to browse.
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    HeapDumper dumper(live_objects_only /* request GC */);
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    int res = dumper.dump(op->arg(0));
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    if (res == 0) {
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      out->print_cr("Heap dump file created");
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    } else {
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      // heap dump failed
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      ResourceMark rm;
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      char* error = dumper.error_as_C_string();
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      if (error == NULL) {
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        out->print_cr("Dump failed - reason unknown");
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      } else {
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        out->print_cr("%s", error);
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      }
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    }
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  }
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  return JNI_OK;
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}
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// Implementation of "inspectheap" command
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// See also: ClassHistogramDCmd class
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//
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// Input arguments :-
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//   arg0: "-live" or "-all"
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//   arg1: Name of the dump file or NULL
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static jint heap_inspection(AttachOperation* op, outputStream* out) {
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  bool live_objects_only = true;   // default is true to retain the behavior before this change is made
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  outputStream* os = out;   // if path not specified or path is NULL, use out
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  fileStream* fs = NULL;
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  const char* arg0 = op->arg(0);
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  if (arg0 != NULL && (strlen(arg0) > 0)) {
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    if (strcmp(arg0, "-all") != 0 && strcmp(arg0, "-live") != 0) {
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      out->print_cr("Invalid argument to inspectheap operation: %s", arg0);
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      return JNI_ERR;
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    }
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    live_objects_only = strcmp(arg0, "-live") == 0;
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  }
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  const char* path = op->arg(1);
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  if (path != NULL) {
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    if (path[0] == '\0') {
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      out->print_cr("No dump file specified");
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    } else {
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      // create file
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      fs = new (ResourceObj::C_HEAP, mtInternal) fileStream(path);
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      if (fs == NULL) {
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        out->print_cr("Failed to allocate space for file: %s", path);
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        return JNI_ERR;
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      }
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      os = fs;
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    }
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  }
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  VM_GC_HeapInspection heapop(os, live_objects_only /* request full gc */);
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  VMThread::execute(&heapop);
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  if (os != NULL && os != out) {
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    out->print_cr("Heap inspection file created: %s", path);
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    delete fs;
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  }
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  return JNI_OK;
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}
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// Implementation of "setflag" command
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static jint set_flag(AttachOperation* op, outputStream* out) {
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  const char* name = NULL;
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  if ((name = op->arg(0)) == NULL) {
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    out->print_cr("flag name is missing");
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    return JNI_ERR;
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  }
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  FormatBuffer<80> err_msg("%s", "");
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  int ret = WriteableFlags::set_flag(op->arg(0), op->arg(1), JVMFlag::ATTACH_ON_DEMAND, err_msg);
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  if (ret != JVMFlag::SUCCESS) {
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    if (ret == JVMFlag::NON_WRITABLE) {
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      // if the flag is not manageable try to change it through
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      // the platform dependent implementation
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      return AttachListener::pd_set_flag(op, out);
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    } else {
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      out->print_cr("%s", err_msg.buffer());
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    }
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    return JNI_ERR;
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  }
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  return JNI_OK;
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}
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// Implementation of "printflag" command
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// See also: PrintVMFlagsDCmd class
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static jint print_flag(AttachOperation* op, outputStream* out) {
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  const char* name = NULL;
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  if ((name = op->arg(0)) == NULL) {
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    out->print_cr("flag name is missing");
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    return JNI_ERR;
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  }
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  JVMFlag* f = JVMFlag::find_flag((char*)name, strlen(name));
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  if (f) {
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    f->print_as_flag(out);
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    out->cr();
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   337
  } else {
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   338
    out->print_cr("no such flag '%s'", name);
489c9b5090e2 Initial load
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parents:
diff changeset
   339
  }
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   340
  return JNI_OK;
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diff changeset
   341
}
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diff changeset
   342
489c9b5090e2 Initial load
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   343
// Table to map operation names to functions.
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   344
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   345
// names must be of length <= AttachOperation::name_length_max
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   346
static AttachOperationFunctionInfo funcs[] = {
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   347
  { "agentProperties",  get_agent_properties },
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parents:
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   348
  { "datadump",         data_dump },
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parents:
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   349
  { "dumpheap",         dump_heap },
44993
f61bcd80ec1f 8178380: Module system implementation refresh (5/2017)
alanb
parents: 36795
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   350
  { "load",             load_agent },
1
489c9b5090e2 Initial load
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parents:
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   351
  { "properties",       get_system_properties },
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parents:
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   352
  { "threaddump",       thread_dump },
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parents:
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   353
  { "inspectheap",      heap_inspection },
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parents:
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   354
  { "setflag",          set_flag },
489c9b5090e2 Initial load
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parents:
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   355
  { "printflag",        print_flag },
11209
110525ac80b0 7104647: Adding a diagnostic command framework
fparain
parents: 8921
diff changeset
   356
  { "jcmd",             jcmd },
1
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parents:
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   357
  { NULL,               NULL }
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   358
};
489c9b5090e2 Initial load
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parents:
diff changeset
   359
489c9b5090e2 Initial load
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parents:
diff changeset
   360
489c9b5090e2 Initial load
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parents:
diff changeset
   361
489c9b5090e2 Initial load
duke
parents:
diff changeset
   362
// The Attach Listener threads services a queue. It dequeues an operation
489c9b5090e2 Initial load
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parents:
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   363
// from the queue, examines the operation name (command), and dispatches
489c9b5090e2 Initial load
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parents:
diff changeset
   364
// to the corresponding function to perform the operation.
489c9b5090e2 Initial load
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parents:
diff changeset
   365
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parents:
diff changeset
   366
static void attach_listener_thread_entry(JavaThread* thread, TRAPS) {
489c9b5090e2 Initial load
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parents:
diff changeset
   367
  os::set_priority(thread, NearMaxPriority);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   368
49737
01960eec4570 8201321: NMT: Unnecessary re-recording thread stack and size when attaching listener to JavaThread
zgu
parents: 49361
diff changeset
   369
  assert(thread == Thread::current(), "Must be");
01960eec4570 8201321: NMT: Unnecessary re-recording thread stack and size when attaching listener to JavaThread
zgu
parents: 49361
diff changeset
   370
  assert(thread->stack_base() != NULL && thread->stack_size() > 0,
01960eec4570 8201321: NMT: Unnecessary re-recording thread stack and size when attaching listener to JavaThread
zgu
parents: 49361
diff changeset
   371
         "Should already be setup");
14120
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 13952
diff changeset
   372
1
489c9b5090e2 Initial load
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parents:
diff changeset
   373
  if (AttachListener::pd_init() != 0) {
489c9b5090e2 Initial load
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parents:
diff changeset
   374
    return;
489c9b5090e2 Initial load
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parents:
diff changeset
   375
  }
489c9b5090e2 Initial load
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parents:
diff changeset
   376
  AttachListener::set_initialized();
489c9b5090e2 Initial load
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parents:
diff changeset
   377
489c9b5090e2 Initial load
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parents:
diff changeset
   378
  for (;;) {
489c9b5090e2 Initial load
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parents:
diff changeset
   379
    AttachOperation* op = AttachListener::dequeue();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   380
    if (op == NULL) {
489c9b5090e2 Initial load
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parents:
diff changeset
   381
      return;   // dequeue failed or shutdown
489c9b5090e2 Initial load
duke
parents:
diff changeset
   382
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   383
489c9b5090e2 Initial load
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parents:
diff changeset
   384
    ResourceMark rm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   385
    bufferedStream st;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   386
    jint res = JNI_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   387
489c9b5090e2 Initial load
duke
parents:
diff changeset
   388
    // handle special detachall operation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   389
    if (strcmp(op->name(), AttachOperation::detachall_operation_name()) == 0) {
489c9b5090e2 Initial load
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parents:
diff changeset
   390
      AttachListener::detachall();
44993
f61bcd80ec1f 8178380: Module system implementation refresh (5/2017)
alanb
parents: 36795
diff changeset
   391
    } else if (!EnableDynamicAgentLoading && strcmp(op->name(), "load") == 0) {
f61bcd80ec1f 8178380: Module system implementation refresh (5/2017)
alanb
parents: 36795
diff changeset
   392
      st.print("Dynamic agent loading is not enabled. "
f61bcd80ec1f 8178380: Module system implementation refresh (5/2017)
alanb
parents: 36795
diff changeset
   393
               "Use -XX:+EnableDynamicAgentLoading to launch target VM.");
f61bcd80ec1f 8178380: Module system implementation refresh (5/2017)
alanb
parents: 36795
diff changeset
   394
      res = JNI_ERR;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   395
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   396
      // find the function to dispatch too
489c9b5090e2 Initial load
duke
parents:
diff changeset
   397
      AttachOperationFunctionInfo* info = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   398
      for (int i=0; funcs[i].name != NULL; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   399
        const char* name = funcs[i].name;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   400
        assert(strlen(name) <= AttachOperation::name_length_max, "operation <= name_length_max");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   401
        if (strcmp(op->name(), name) == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   402
          info = &(funcs[i]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
          break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   406
489c9b5090e2 Initial load
duke
parents:
diff changeset
   407
      // check for platform dependent attach operation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
      if (info == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
        info = AttachListener::pd_find_operation(op->name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
      if (info != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
        // dispatch to the function that implements this operation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
        res = (info->func)(op, &st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
        st.print("Operation %s not recognized!", op->name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
        res = JNI_ERR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
    // operation complete - send result and output to client
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
    op->complete(res, &st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
22197
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   426
bool AttachListener::has_init_error(TRAPS) {
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   427
  if (HAS_PENDING_EXCEPTION) {
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   428
    tty->print_cr("Exception in VM (AttachListener::init) : ");
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   429
    java_lang_Throwable::print(PENDING_EXCEPTION, tty);
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   430
    tty->cr();
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   431
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   432
    CLEAR_PENDING_EXCEPTION;
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   433
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   434
    return true;
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   435
  } else {
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   436
    return false;
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   437
  }
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   438
}
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   439
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
// Starts the Attach Listener thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
void AttachListener::init() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
  EXCEPTION_MARK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
  const char thread_name[] = "Attach Listener";
22197
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   445
  Handle string = java_lang_String::create_from_str(thread_name, THREAD);
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   446
  if (has_init_error(THREAD)) {
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   447
    return;
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   448
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
  // Initialize thread_oop to put it into the system threadGroup
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
  Handle thread_group (THREAD, Universe::system_thread_group());
50217
843fc56f4686 8203381: Replace InstanceKlass::allocate_instance_handle with JavaCalls::construct_new_instance
iklam
parents: 49902
diff changeset
   452
  Handle thread_oop = JavaCalls::construct_new_instance(SystemDictionary::Thread_klass(),
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7397
diff changeset
   453
                       vmSymbols::threadgroup_string_void_signature(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
                       thread_group,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
                       string,
20067
e0337f5f9f5a 6989981: jstack causes "fatal error: ExceptionMark destructor expects no pending exceptions"
sla
parents: 18025
diff changeset
   456
                       THREAD);
22197
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   457
  if (has_init_error(THREAD)) {
20067
e0337f5f9f5a 6989981: jstack causes "fatal error: ExceptionMark destructor expects no pending exceptions"
sla
parents: 18025
diff changeset
   458
    return;
e0337f5f9f5a 6989981: jstack causes "fatal error: ExceptionMark destructor expects no pending exceptions"
sla
parents: 18025
diff changeset
   459
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 36795
diff changeset
   461
  Klass* group = SystemDictionary::ThreadGroup_klass();
50217
843fc56f4686 8203381: Replace InstanceKlass::allocate_instance_handle with JavaCalls::construct_new_instance
iklam
parents: 49902
diff changeset
   462
  JavaValue result(T_VOID);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
  JavaCalls::call_special(&result,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
                        thread_group,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
                        group,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7397
diff changeset
   466
                        vmSymbols::add_method_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7397
diff changeset
   467
                        vmSymbols::thread_void_signature(),
50217
843fc56f4686 8203381: Replace InstanceKlass::allocate_instance_handle with JavaCalls::construct_new_instance
iklam
parents: 49902
diff changeset
   468
                        thread_oop,
20067
e0337f5f9f5a 6989981: jstack causes "fatal error: ExceptionMark destructor expects no pending exceptions"
sla
parents: 18025
diff changeset
   469
                        THREAD);
22197
41ea552a447d 6730115: Fastdebug VM crashes with "ExceptionMark destructor expects no pending exceptions" error
zgu
parents: 20291
diff changeset
   470
  if (has_init_error(THREAD)) {
20067
e0337f5f9f5a 6989981: jstack causes "fatal error: ExceptionMark destructor expects no pending exceptions"
sla
parents: 18025
diff changeset
   471
    return;
e0337f5f9f5a 6989981: jstack causes "fatal error: ExceptionMark destructor expects no pending exceptions"
sla
parents: 18025
diff changeset
   472
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
  { MutexLocker mu(Threads_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
    JavaThread* listener_thread = new JavaThread(&attach_listener_thread_entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
    // Check that thread and osthread were created
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
    if (listener_thread == NULL || listener_thread->osthread() == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
      vm_exit_during_initialization("java.lang.OutOfMemoryError",
22758
c6b6abb73544 7182040: volano29 limited by os resource on Linux - need better diagnostic message
iklam
parents: 22555
diff changeset
   480
                                    os::native_thread_creation_failed_msg());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
    java_lang_Thread::set_thread(thread_oop(), listener_thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
    java_lang_Thread::set_daemon(thread_oop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
    listener_thread->set_threadObj(thread_oop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
    Threads::add(listener_thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
    Thread::start(listener_thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
// Performs clean-up tasks on platforms where we can detect that the last
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
// client has detached
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
void AttachListener::detachall() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
  // call the platform dependent clean-up
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
  pd_detachall();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
}