thread.inline.hpp revision 9651:f7dc8eebc3f5 
1/*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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7 * published by the Free Software Foundation.
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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
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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
36inline 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}
46inline 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
57inline void Thread::set_has_async_exception() {
58  set_suspend_flag(_has_async_exception);
59}
60inline void Thread::clear_has_async_exception() {
61  clear_suspend_flag(_has_async_exception);
62}
63inline void Thread::set_critical_native_unlock() {
64  set_suspend_flag(_critical_native_unlock);
65}
66inline void Thread::clear_critical_native_unlock() {
67  clear_suspend_flag(_critical_native_unlock);
68}
69
70inline 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
83inline void JavaThread::set_ext_suspended() {
84  set_suspend_flag (_ext_suspended);
85}
86inline void JavaThread::clear_ext_suspended() {
87  clear_suspend_flag(_ext_suspended);
88}
89
90inline void JavaThread::set_external_suspend() {
91  set_suspend_flag(_external_suspend);
92}
93inline void JavaThread::clear_external_suspend() {
94  clear_suspend_flag(_external_suspend);
95}
96
97inline void JavaThread::set_deopt_suspend() {
98  set_suspend_flag(_deopt_suspend);
99}
100inline void JavaThread::clear_deopt_suspend() {
101  clear_suspend_flag(_deopt_suspend);
102}
103
104inline 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)
111inline JavaThreadState JavaThread::thread_state() const    {
112  return (JavaThreadState) OrderAccess::load_acquire((volatile jint*)&_thread_state);
113}
114
115inline void JavaThread::set_thread_state(JavaThreadState s) {
116  OrderAccess::release_store((volatile jint*)&_thread_state, (jint)s);
117}
118#endif
119
120inline void JavaThread::set_done_attaching_via_jni() {
121  _jni_attach_state = _attached_via_jni;
122  OrderAccess::fence();
123}
124
125inline bool JavaThread::stack_guard_zone_unused() {
126  return _stack_guard_state == stack_guard_unused;
127}
128
129inline bool JavaThread::stack_yellow_zone_disabled() {
130  return _stack_guard_state == stack_guard_yellow_disabled;
131}
132
133inline 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
144inline 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
154