Mon, 04 Jan 2010 14:51:26 -0800
6637203: Classunloading messages go to stdout rather than Xloggc file, causing hangs when stdout is closed
Summary: Decoupled TraceClassUnloading from verbose:gc, JVMTI_VERBOSE_GC and PrintGC[Details], making it settable in a manner identical to TraceClassLoading. Reverted an inadvertent change of TraceClassUnloading output in a previous changeset from gclog back to tty.
Reviewed-by: coleenp, dholmes, jmasa, poonam
1 /*
2 * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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23 */
25 # include "incls/_precompiled.incl"
26 # include "incls/_threadLocalStorage.cpp.incl"
28 // static member initialization
29 int ThreadLocalStorage::_thread_index = -1;
31 Thread* ThreadLocalStorage::get_thread_slow() {
32 return (Thread*) os::thread_local_storage_at(ThreadLocalStorage::thread_index());
33 }
35 void ThreadLocalStorage::set_thread(Thread* thread) {
36 pd_set_thread(thread);
38 // The following ensure that any optimization tricks we have tried
39 // did not backfire on us:
40 guarantee(get_thread() == thread, "must be the same thread, quickly");
41 guarantee(get_thread_slow() == thread, "must be the same thread, slowly");
42 }
44 void ThreadLocalStorage::init() {
45 assert(!is_initialized(),
46 "More than one attempt to initialize threadLocalStorage");
47 pd_init();
48 set_thread_index(os::allocate_thread_local_storage());
49 generate_code_for_get_thread();
50 }
52 bool ThreadLocalStorage::is_initialized() {
53 return (thread_index() != -1);
54 }