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1 /* |
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2 * Copyright (c) 2012, 2017, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #ifndef SHARE_VM_RUNTIME_THREAD_INLINE_HPP |
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26 #define SHARE_VM_RUNTIME_THREAD_INLINE_HPP |
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27 |
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28 #define SHARE_VM_RUNTIME_THREAD_INLINE_HPP_SCOPE |
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29 |
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30 #include "runtime/atomic.hpp" |
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31 #include "runtime/os.inline.hpp" |
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32 #include "runtime/thread.hpp" |
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33 |
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34 #undef SHARE_VM_RUNTIME_THREAD_INLINE_HPP_SCOPE |
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35 |
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36 inline void Thread::set_suspend_flag(SuspendFlags f) { |
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37 assert(sizeof(jint) == sizeof(_suspend_flags), "size mismatch"); |
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38 uint32_t flags; |
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39 do { |
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40 flags = _suspend_flags; |
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41 } |
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42 while (Atomic::cmpxchg((jint)(flags | f), |
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43 (volatile jint*)&_suspend_flags, |
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44 (jint)flags) != (jint)flags); |
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45 } |
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46 inline void Thread::clear_suspend_flag(SuspendFlags f) { |
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47 assert(sizeof(jint) == sizeof(_suspend_flags), "size mismatch"); |
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48 uint32_t flags; |
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49 do { |
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50 flags = _suspend_flags; |
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51 } |
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52 while (Atomic::cmpxchg((jint)(flags & ~f), |
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53 (volatile jint*)&_suspend_flags, |
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54 (jint)flags) != (jint)flags); |
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55 } |
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56 |
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57 inline void Thread::set_has_async_exception() { |
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58 set_suspend_flag(_has_async_exception); |
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59 } |
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60 inline void Thread::clear_has_async_exception() { |
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61 clear_suspend_flag(_has_async_exception); |
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62 } |
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63 inline void Thread::set_critical_native_unlock() { |
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64 set_suspend_flag(_critical_native_unlock); |
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65 } |
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66 inline void Thread::clear_critical_native_unlock() { |
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67 clear_suspend_flag(_critical_native_unlock); |
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68 } |
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69 inline void Thread::set_trace_flag() { |
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70 set_suspend_flag(_trace_flag); |
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71 } |
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72 inline void Thread::clear_trace_flag() { |
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73 clear_suspend_flag(_trace_flag); |
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74 } |
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75 |
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76 inline jlong Thread::cooked_allocated_bytes() { |
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77 jlong allocated_bytes = OrderAccess::load_acquire(&_allocated_bytes); |
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78 if (UseTLAB) { |
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79 size_t used_bytes = tlab().used_bytes(); |
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80 if (used_bytes <= ThreadLocalAllocBuffer::max_size_in_bytes()) { |
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81 // Comparing used_bytes with the maximum allowed size will ensure |
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82 // that we don't add the used bytes from a semi-initialized TLAB |
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83 // ending up with incorrect values. There is still a race between |
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84 // incrementing _allocated_bytes and clearing the TLAB, that might |
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85 // cause double counting in rare cases. |
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86 return allocated_bytes + used_bytes; |
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87 } |
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88 } |
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89 return allocated_bytes; |
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90 } |
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91 |
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92 inline void JavaThread::set_ext_suspended() { |
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93 set_suspend_flag (_ext_suspended); |
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94 } |
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95 inline void JavaThread::clear_ext_suspended() { |
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96 clear_suspend_flag(_ext_suspended); |
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97 } |
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98 |
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99 inline void JavaThread::set_external_suspend() { |
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100 set_suspend_flag(_external_suspend); |
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101 } |
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102 inline void JavaThread::clear_external_suspend() { |
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103 clear_suspend_flag(_external_suspend); |
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104 } |
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105 |
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106 inline void JavaThread::set_deopt_suspend() { |
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107 set_suspend_flag(_deopt_suspend); |
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108 } |
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109 inline void JavaThread::clear_deopt_suspend() { |
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110 clear_suspend_flag(_deopt_suspend); |
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111 } |
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112 |
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113 inline void JavaThread::set_pending_async_exception(oop e) { |
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114 _pending_async_exception = e; |
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115 _special_runtime_exit_condition = _async_exception; |
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116 set_has_async_exception(); |
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117 } |
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118 |
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119 #if defined(PPC64) || defined (AARCH64) |
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120 inline JavaThreadState JavaThread::thread_state() const { |
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121 return (JavaThreadState) OrderAccess::load_acquire((volatile jint*)&_thread_state); |
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122 } |
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123 |
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124 inline void JavaThread::set_thread_state(JavaThreadState s) { |
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125 OrderAccess::release_store((volatile jint*)&_thread_state, (jint)s); |
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126 } |
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127 #endif |
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128 |
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129 inline void JavaThread::set_done_attaching_via_jni() { |
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130 _jni_attach_state = _attached_via_jni; |
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131 OrderAccess::fence(); |
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132 } |
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133 |
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134 inline bool JavaThread::stack_guard_zone_unused() { |
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135 return _stack_guard_state == stack_guard_unused; |
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136 } |
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137 |
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138 inline bool JavaThread::stack_yellow_reserved_zone_disabled() { |
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139 return _stack_guard_state == stack_guard_yellow_reserved_disabled; |
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140 } |
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141 |
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142 inline bool JavaThread::stack_reserved_zone_disabled() { |
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143 return _stack_guard_state == stack_guard_reserved_disabled; |
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144 } |
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145 |
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146 inline size_t JavaThread::stack_available(address cur_sp) { |
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147 // This code assumes java stacks grow down |
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148 address low_addr; // Limit on the address for deepest stack depth |
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149 if (_stack_guard_state == stack_guard_unused) { |
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150 low_addr = stack_end(); |
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151 } else { |
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152 low_addr = stack_reserved_zone_base(); |
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153 } |
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154 return cur_sp > low_addr ? cur_sp - low_addr : 0; |
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155 } |
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156 |
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157 inline bool JavaThread::stack_guards_enabled() { |
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158 #ifdef ASSERT |
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159 if (os::uses_stack_guard_pages()) { |
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160 assert(_stack_guard_state != stack_guard_unused, "guard pages must be in use"); |
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161 } |
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162 #endif |
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163 return _stack_guard_state == stack_guard_enabled; |
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164 } |
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165 |
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166 #endif // SHARE_VM_RUNTIME_THREAD_INLINE_HPP |