view src/share/vm/runtime/hpi.cpp @ 1145:e018e6884bd8

6631166: CMS: better heuristics when combatting fragmentation Summary: Autonomic per-worker free block cache sizing, tunable coalition policies, fixes to per-size block statistics, retuned gain and bandwidth of some feedback loop filters to allow quicker reactivity to abrupt changes in ambient demand, and other heuristics to reduce fragmentation of the CMS old gen. Also tightened some assertions, including those related to locking. Reviewed-by: jmasa
author ysr
date Wed, 23 Dec 2009 09:23:54 -0800
parents d1605aabd0a1
children c18cbe5936b8
line wrap: on
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/*
 * Copyright 1998-2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 */

# include "incls/_precompiled.incl"
# include "incls/_hpi.cpp.incl"

extern "C" {
  static void unimplemented_panic(const char *fmt, ...) {
    // mitigate testing damage from bug 6626677
    warning("hpi::unimplemented_panic called");
  }

  static void unimplemented_monitorRegister(sys_mon_t *mid, char *info_str) {
    Unimplemented();
  }
}

static vm_calls_t callbacks = {
  jio_fprintf,
  unimplemented_panic,
  unimplemented_monitorRegister,

  NULL, // unused
  NULL, // unused
  NULL  // unused
};

GetInterfaceFunc        hpi::_get_interface = NULL;
HPI_FileInterface*      hpi::_file          = NULL;
HPI_SocketInterface*    hpi::_socket        = NULL;
HPI_LibraryInterface*   hpi::_library       = NULL;
HPI_SystemInterface*    hpi::_system        = NULL;

jint hpi::initialize()
{
  initialize_get_interface(&callbacks);
  if (_get_interface == NULL)
    return JNI_ERR;

  jint result;

  result = (*_get_interface)((void **)&_file, "File", 1);
  if (result != 0) {
    if (TraceHPI) tty->print_cr("Can't find HPI_FileInterface");
    return JNI_ERR;
  }


  result = (*_get_interface)((void **)&_library, "Library", 1);
  if (result != 0) {
    if (TraceHPI) tty->print_cr("Can't find HPI_LibraryInterface");
    return JNI_ERR;
  }

  result = (*_get_interface)((void **)&_system, "System", 1);
  if (result != 0) {
    if (TraceHPI) tty->print_cr("Can't find HPI_SystemInterface");
    return JNI_ERR;
  }

  return JNI_OK;
}

jint hpi::initialize_socket_library()
{
  if (_get_interface == NULL) {
    if (TraceHPI) {
      tty->print_cr("Fatal HPI error: reached initialize_socket_library with NULL _get_interface");
    }
    return JNI_ERR;
  }

  jint result;
  result = (*_get_interface)((void **)&_socket, "Socket", 1);
  if (result != 0) {
    if (TraceHPI) tty->print_cr("Can't find HPI_SocketInterface");
    return JNI_ERR;
  }

  return JNI_OK;
}