Thu, 25 Sep 2008 12:50:51 -0700
6744783: HotSpot segfaults if given -XX options with an empty string argument
Reviewed-by: kamg, kvn
Contributed-by: volker.simonis@gmail.com
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1997-2003 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | # include "incls/_precompiled.incl" |
duke@435 | 26 | # include "incls/_threadLocalStorage.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | // static member initialization |
duke@435 | 29 | int ThreadLocalStorage::_thread_index = -1; |
duke@435 | 30 | |
duke@435 | 31 | Thread* ThreadLocalStorage::get_thread_slow() { |
duke@435 | 32 | return (Thread*) os::thread_local_storage_at(ThreadLocalStorage::thread_index()); |
duke@435 | 33 | } |
duke@435 | 34 | |
duke@435 | 35 | void ThreadLocalStorage::set_thread(Thread* thread) { |
duke@435 | 36 | pd_set_thread(thread); |
duke@435 | 37 | |
duke@435 | 38 | // The following ensure that any optimization tricks we have tried |
duke@435 | 39 | // did not backfire on us: |
duke@435 | 40 | guarantee(get_thread() == thread, "must be the same thread, quickly"); |
duke@435 | 41 | guarantee(get_thread_slow() == thread, "must be the same thread, slowly"); |
duke@435 | 42 | } |
duke@435 | 43 | |
duke@435 | 44 | void ThreadLocalStorage::init() { |
kamg@677 | 45 | assert(!is_initialized(), |
kamg@677 | 46 | "More than one attempt to initialize threadLocalStorage"); |
duke@435 | 47 | pd_init(); |
duke@435 | 48 | set_thread_index(os::allocate_thread_local_storage()); |
duke@435 | 49 | generate_code_for_get_thread(); |
duke@435 | 50 | } |
kamg@677 | 51 | |
kamg@677 | 52 | bool ThreadLocalStorage::is_initialized() { |
kamg@677 | 53 | return (thread_index() != -1); |
kamg@677 | 54 | } |