Mercurial > jdk8-mips64-public > hotspot / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/os/linux/vm/threadCritical_linux.cpp	Sat Dec 01 00:00:00 2007 +0000
     1.3 @@ -0,0 +1,66 @@
     1.4 +/*
     1.5 + * Copyright 2001-2006 Sun Microsystems, Inc.  All Rights Reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
    1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
    1.24 + * have any questions.
    1.25 + *
    1.26 + */
    1.27 +
    1.28 +#include "incls/_precompiled.incl"
    1.29 +#include "incls/_threadCritical_linux.cpp.incl"
    1.30 +
    1.31 +// put OS-includes here
    1.32 +# include <pthread.h>
    1.33 +
    1.34 +//
    1.35 +// See threadCritical.hpp for details of this class.
    1.36 +//
    1.37 +
    1.38 +static pthread_t             tc_owner = 0;
    1.39 +static pthread_mutex_t       tc_mutex = PTHREAD_MUTEX_INITIALIZER;
    1.40 +static int                   tc_count = 0;
    1.41 +
    1.42 +void ThreadCritical::initialize() {
    1.43 +}
    1.44 +
    1.45 +void ThreadCritical::release() {
    1.46 +}
    1.47 +
    1.48 +ThreadCritical::ThreadCritical() {
    1.49 +  pthread_t self = pthread_self();
    1.50 +  if (self != tc_owner) {
    1.51 +    int ret = pthread_mutex_lock(&tc_mutex);
    1.52 +    guarantee(ret == 0, "fatal error with pthread_mutex_lock()");
    1.53 +    assert(tc_count == 0, "Lock acquired with illegal reentry count.");
    1.54 +    tc_owner = self;
    1.55 +  }
    1.56 +  tc_count++;
    1.57 +}
    1.58 +
    1.59 +ThreadCritical::~ThreadCritical() {
    1.60 +  assert(tc_owner == pthread_self(), "must have correct owner");
    1.61 +  assert(tc_count > 0, "must have correct count");
    1.62 +
    1.63 +  tc_count--;
    1.64 +  if (tc_count == 0) {
    1.65 +    tc_owner = 0;
    1.66 +    int ret = pthread_mutex_unlock(&tc_mutex);
    1.67 +    guarantee(ret == 0, "fatal error with pthread_mutex_unlock()");
    1.68 +  }
    1.69 +}