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