1 /*
2 * Copyright (c) 2012, 2015, 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
25 #ifndef SHARE_VM_RUNTIME_THREAD_INLINE_HPP
26 #define SHARE_VM_RUNTIME_THREAD_INLINE_HPP
27
28 #define SHARE_VM_RUNTIME_THREAD_INLINE_HPP_SCOPE
29
30 #include "runtime/atomic.inline.hpp"
31 #include "runtime/os.inline.hpp"
32 #include "runtime/thread.hpp"
33
34 #undef SHARE_VM_RUNTIME_THREAD_INLINE_HPP_SCOPE
35
36 inline void Thread::set_suspend_flag(SuspendFlags f) {
37 assert(sizeof(jint) == sizeof(_suspend_flags), "size mismatch");
38 uint32_t flags;
39 do {
40 flags = _suspend_flags;
41 }
42 while (Atomic::cmpxchg((jint)(flags | f),
43 (volatile jint*)&_suspend_flags,
44 (jint)flags) != (jint)flags);
45 }
46 inline void Thread::clear_suspend_flag(SuspendFlags f) {
47 assert(sizeof(jint) == sizeof(_suspend_flags), "size mismatch");
48 uint32_t flags;
49 do {
50 flags = _suspend_flags;
51 }
52 while (Atomic::cmpxchg((jint)(flags & ~f),
53 (volatile jint*)&_suspend_flags,
54 (jint)flags) != (jint)flags);
55 }
56
57 inline void Thread::set_has_async_exception() {
58 set_suspend_flag(_has_async_exception);
59 }
60 inline void Thread::clear_has_async_exception() {
61 clear_suspend_flag(_has_async_exception);
62 }
63 inline void Thread::set_critical_native_unlock() {
64 set_suspend_flag(_critical_native_unlock);
65 }
66 inline void Thread::clear_critical_native_unlock() {
67 clear_suspend_flag(_critical_native_unlock);
68 }
69
70 inline jlong Thread::cooked_allocated_bytes() {
71 jlong allocated_bytes = OrderAccess::load_acquire(&_allocated_bytes);
72 if (UseTLAB) {
73 size_t used_bytes = tlab().used_bytes();
74 if ((ssize_t)used_bytes > 0) {
75 // More-or-less valid tlab. The load_acquire above should ensure
76 // that the result of the add is <= the instantaneous value.
77 return allocated_bytes + used_bytes;
78 }
79 }
80 return allocated_bytes;
81 }
82
83 inline void JavaThread::set_ext_suspended() {
84 set_suspend_flag (_ext_suspended);
85 }
86 inline void JavaThread::clear_ext_suspended() {
87 clear_suspend_flag(_ext_suspended);
88 }
89
90 inline void JavaThread::set_external_suspend() {
91 set_suspend_flag(_external_suspend);
92 }
93 inline void JavaThread::clear_external_suspend() {
94 clear_suspend_flag(_external_suspend);
95 }
96
97 inline void JavaThread::set_deopt_suspend() {
98 set_suspend_flag(_deopt_suspend);
99 }
100 inline void JavaThread::clear_deopt_suspend() {
101 clear_suspend_flag(_deopt_suspend);
102 }
103
104 inline void JavaThread::set_pending_async_exception(oop e) {
105 _pending_async_exception = e;
106 _special_runtime_exit_condition = _async_exception;
107 set_has_async_exception();
108 }
109
110 #if defined(PPC64) || defined (AARCH64)
111 inline JavaThreadState JavaThread::thread_state() const {
112 return (JavaThreadState) OrderAccess::load_acquire((volatile jint*)&_thread_state);
113 }
114
115 inline void JavaThread::set_thread_state(JavaThreadState s) {
116 OrderAccess::release_store((volatile jint*)&_thread_state, (jint)s);
117 }
118 #endif
119
120 inline void JavaThread::set_done_attaching_via_jni() {
121 _jni_attach_state = _attached_via_jni;
122 OrderAccess::fence();
123 }
124
125 inline bool JavaThread::stack_guard_zone_unused() {
126 return _stack_guard_state == stack_guard_unused;
127 }
128
129 inline bool JavaThread::stack_yellow_zone_disabled() {
130 return _stack_guard_state == stack_guard_yellow_disabled;
131 }
132
133 inline size_t JavaThread::stack_available(address cur_sp) {
134 // This code assumes java stacks grow down
135 address low_addr; // Limit on the address for deepest stack depth
136 if (_stack_guard_state == stack_guard_unused) {
137 low_addr = stack_base() - stack_size();
138 } else {
139 low_addr = stack_yellow_zone_base();
140 }
141 return cur_sp > low_addr ? cur_sp - low_addr : 0;
142 }
143
144 inline bool JavaThread::stack_yellow_zone_enabled() {
145 #ifdef ASSERT
146 if (os::uses_stack_guard_pages()) {
147 assert(_stack_guard_state != stack_guard_unused, "guard pages must be in use");
148 }
149 #endif
150 return _stack_guard_state == stack_guard_enabled;
151 }
152
153 #endif // SHARE_VM_RUNTIME_THREAD_INLINE_HPP