1/*
2 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. 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.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24#include "precompiled.hpp"
25#include "gc/z/zThread.hpp"
26#include "runtime/thread.hpp"
27#include "utilities/debug.hpp"
28
29__thread bool ZThread::_initialized;
30__thread uintptr_t ZThread::_id;
31__thread bool ZThread::_is_vm;
32__thread bool ZThread::_is_java;
33__thread bool ZThread::_is_worker;
34__thread bool ZThread::_is_runtime_worker;
35__thread uint ZThread::_worker_id;
36
37void ZThread::initialize() {
38 assert(!_initialized, "Already initialized");
39 const Thread* const thread = Thread::current();
40 _initialized = true;
41 _id = (uintptr_t)thread;
42 _is_vm = thread->is_VM_thread();
43 _is_java = thread->is_Java_thread();
44 _is_worker = false;
45 _is_runtime_worker = false;
46 _worker_id = (uint)-1;
47}
48
49const char* ZThread::name() {
50 const Thread* const thread = Thread::current();
51 if (thread->is_Named_thread()) {
52 const NamedThread* const named = (const NamedThread*)thread;
53 return named->name();
54 } else if (thread->is_Java_thread()) {
55 return "Java";
56 }
57
58 return "Unknown";
59}
60
61void ZThread::set_worker() {
62 ensure_initialized();
63 _is_worker = true;
64}
65
66void ZThread::set_runtime_worker() {
67 ensure_initialized();
68 _is_runtime_worker = true;
69}
70
71bool ZThread::has_worker_id() {
72 return _initialized &&
73 _is_worker &&
74 _worker_id != (uint)-1;
75}
76
77void ZThread::set_worker_id(uint worker_id) {
78 ensure_initialized();
79 assert(!has_worker_id(), "Worker id already initialized");
80 _worker_id = worker_id;
81}
82
83void ZThread::clear_worker_id() {
84 assert(has_worker_id(), "Worker id not initialized");
85 _worker_id = (uint)-1;
86}
87