view src/os/solaris/vm/thread_solaris.inline.hpp @ 20295:3f2894c5052e

8048112: G1 Full GC needs to support the case when the very first region is not available Summary: Refactor preparation for compaction during Full GC so that it lazily initializes the first compaction point. This also avoids problems later when the first region may not be committed. Also reviewed by K. Barrett. Reviewed-by: brutisso
author tschatzl
date Mon, 21 Jul 2014 10:00:31 +0200
parents c49dcaf78a65
children ca3c6538bcec
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/*
 * Copyright (c) 2002, 2011, 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
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 */

#ifndef OS_SOLARIS_VM_THREAD_SOLARIS_INLINE_HPP
#define OS_SOLARIS_VM_THREAD_SOLARIS_INLINE_HPP

#ifndef SHARE_VM_RUNTIME_THREAD_INLINE_HPP_SCOPE
#error "This file should only be included from thread.inline.hpp"
#endif

#include "runtime/atomic.inline.hpp"
#include "runtime/thread.hpp"
#include "runtime/threadLocalStorage.hpp"

// Thread::current is "hot" it's called > 128K times in the 1st 500 msecs of
// startup.
// ThreadLocalStorage::thread is warm -- it's called > 16K times in the same
// period.   Thread::current() now calls ThreadLocalStorage::thread() directly.
// For SPARC, to avoid excessive register window spill-fill faults,
// we aggressively inline these routines.

inline Thread* ThreadLocalStorage::thread()  {
  // don't use specialized code if +UseMallocOnly -- may confuse Purify et al.
  debug_only(if (UseMallocOnly) return get_thread_slow(););

  uintptr_t raw = pd_raw_thread_id();
  int ix = pd_cache_index(raw);
  Thread* candidate = ThreadLocalStorage::_get_thread_cache[ix];
  if (candidate->self_raw_id() == raw) {
    // hit
    return candidate;
  } else {
    return ThreadLocalStorage::get_thread_via_cache_slowly(raw, ix);
  }
}

#endif // OS_SOLARIS_VM_THREAD_SOLARIS_INLINE_HPP