1 /*
2 * Copyright (c) 2012, 2014, 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 #ifdef TARGET_OS_FAMILY_linux
34 # include "thread_linux.inline.hpp"
35 #endif
36 #ifdef TARGET_OS_FAMILY_solaris
37 # include "thread_solaris.inline.hpp"
38 #endif
39 #ifdef TARGET_OS_FAMILY_windows
40 # include "thread_windows.inline.hpp"
41 #endif
42 #ifdef TARGET_OS_FAMILY_aix
43 # include "thread_aix.inline.hpp"
44 #endif
45 #ifdef TARGET_OS_FAMILY_bsd
46 # include "thread_bsd.inline.hpp"
47 #endif
48
49 #undef SHARE_VM_RUNTIME_THREAD_INLINE_HPP_SCOPE
50
51 inline void Thread::set_suspend_flag(SuspendFlags f) {
52 assert(sizeof(jint) == sizeof(_suspend_flags), "size mismatch");
53 uint32_t flags;
54 do {
55 flags = _suspend_flags;
56 }
57 while (Atomic::cmpxchg((jint)(flags | f),
58 (volatile jint*)&_suspend_flags,
59 (jint)flags) != (jint)flags);
60 }
61 inline void Thread::clear_suspend_flag(SuspendFlags f) {
62 assert(sizeof(jint) == sizeof(_suspend_flags), "size mismatch");
63 uint32_t flags;
64 do {
65 flags = _suspend_flags;
66 }
67 while (Atomic::cmpxchg((jint)(flags & ~f),
68 (volatile jint*)&_suspend_flags,
69 (jint)flags) != (jint)flags);
70 }
71
72 inline void Thread::set_has_async_exception() {
73 set_suspend_flag(_has_async_exception);
74 }
75 inline void Thread::clear_has_async_exception() {
76 clear_suspend_flag(_has_async_exception);
77 }
78 inline void Thread::set_critical_native_unlock() {
79 set_suspend_flag(_critical_native_unlock);
80 }
81 inline void Thread::clear_critical_native_unlock() {
82 clear_suspend_flag(_critical_native_unlock);
83 }
84
85 inline jlong Thread::cooked_allocated_bytes() {
86 jlong allocated_bytes = OrderAccess::load_acquire(&_allocated_bytes);
87 if (UseTLAB) {
88 size_t used_bytes = tlab().used_bytes();
89 if ((ssize_t)used_bytes > 0) {
90 // More-or-less valid tlab. The load_acquire above should ensure
91 // that the result of the add is <= the instantaneous value.
92 return allocated_bytes + used_bytes;
93 }
94 }
95 return allocated_bytes;
96 }
97
98 inline void JavaThread::set_ext_suspended() {
99 set_suspend_flag (_ext_suspended);
100 }
101 inline void JavaThread::clear_ext_suspended() {
102 clear_suspend_flag(_ext_suspended);
103 }
104
105 inline void JavaThread::set_external_suspend() {
106 set_suspend_flag(_external_suspend);
107 }
108 inline void JavaThread::clear_external_suspend() {
109 clear_suspend_flag(_external_suspend);
110 }
111
112 inline void JavaThread::set_deopt_suspend() {
113 set_suspend_flag(_deopt_suspend);
114 }
115 inline void JavaThread::clear_deopt_suspend() {
116 clear_suspend_flag(_deopt_suspend);
117 }
118
119 inline void JavaThread::set_pending_async_exception(oop e) {
120 _pending_async_exception = e;
121 _special_runtime_exit_condition = _async_exception;
122 set_has_async_exception();
123 }
124
125 #if defined(PPC64) || defined (AARCH64)
126 inline JavaThreadState JavaThread::thread_state() const {
127 return (JavaThreadState) OrderAccess::load_acquire((volatile jint*)&_thread_state);
128 }
129
130 inline void JavaThread::set_thread_state(JavaThreadState s) {
131 OrderAccess::release_store((volatile jint*)&_thread_state, (jint)s);
132 }
133 #endif
134
135 inline void JavaThread::set_done_attaching_via_jni() {
136 _jni_attach_state = _attached_via_jni;
137 OrderAccess::fence();
138 }
139
140 inline bool JavaThread::stack_guard_zone_unused() {
141 return _stack_guard_state == stack_guard_unused;
142 }
143
144 inline bool JavaThread::stack_yellow_zone_disabled() {
145 return _stack_guard_state == stack_guard_yellow_disabled;
146 }
147
148 inline size_t JavaThread::stack_available(address cur_sp) {
149 // This code assumes java stacks grow down
150 address low_addr; // Limit on the address for deepest stack depth
151 if (_stack_guard_state == stack_guard_unused) {
152 low_addr = stack_base() - stack_size();
153 } else {
154 low_addr = stack_yellow_zone_base();
155 }
156 return cur_sp > low_addr ? cur_sp - low_addr : 0;
157 }
158
159 inline bool JavaThread::stack_yellow_zone_enabled() {
160 #ifdef ASSERT
161 if (os::uses_stack_guard_pages()) {
162 assert(_stack_guard_state != stack_guard_unused, "guard pages must be in use");
163 }
164 #endif
165 return _stack_guard_state == stack_guard_enabled;
166 }
167
168 #endif // SHARE_VM_RUNTIME_THREAD_INLINE_HPP