| /* |
| * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_RUNTIME_THREAD_INLINE_HPP |
| #define SHARE_VM_RUNTIME_THREAD_INLINE_HPP |
| |
| #include "runtime/atomic.hpp" |
| #include "runtime/globals.hpp" |
| #include "runtime/orderAccess.hpp" |
| #include "runtime/os.inline.hpp" |
| #include "runtime/thread.hpp" |
| |
| inline void Thread::set_suspend_flag(SuspendFlags f) { |
| uint32_t flags; |
| do { |
| flags = _suspend_flags; |
| } |
| while (Atomic::cmpxchg((flags | f), &_suspend_flags, flags) != flags); |
| } |
| inline void Thread::clear_suspend_flag(SuspendFlags f) { |
| uint32_t flags; |
| do { |
| flags = _suspend_flags; |
| } |
| while (Atomic::cmpxchg((flags & ~f), &_suspend_flags, flags) != flags); |
| } |
| |
| inline void Thread::set_has_async_exception() { |
| set_suspend_flag(_has_async_exception); |
| } |
| inline void Thread::clear_has_async_exception() { |
| clear_suspend_flag(_has_async_exception); |
| } |
| inline void Thread::set_critical_native_unlock() { |
| set_suspend_flag(_critical_native_unlock); |
| } |
| inline void Thread::clear_critical_native_unlock() { |
| clear_suspend_flag(_critical_native_unlock); |
| } |
| inline void Thread::set_trace_flag() { |
| set_suspend_flag(_trace_flag); |
| } |
| inline void Thread::clear_trace_flag() { |
| clear_suspend_flag(_trace_flag); |
| } |
| |
| inline jlong Thread::cooked_allocated_bytes() { |
| jlong allocated_bytes = OrderAccess::load_acquire(&_allocated_bytes); |
| if (UseTLAB) { |
| size_t used_bytes = tlab().used_bytes(); |
| if (used_bytes <= ThreadLocalAllocBuffer::max_size_in_bytes()) { |
| // Comparing used_bytes with the maximum allowed size will ensure |
| // that we don't add the used bytes from a semi-initialized TLAB |
| // ending up with incorrect values. There is still a race between |
| // incrementing _allocated_bytes and clearing the TLAB, that might |
| // cause double counting in rare cases. |
| return allocated_bytes + used_bytes; |
| } |
| } |
| return allocated_bytes; |
| } |
| |
| inline ThreadsList* Thread::cmpxchg_threads_hazard_ptr(ThreadsList* exchange_value, ThreadsList* compare_value) { |
| return (ThreadsList*)Atomic::cmpxchg(exchange_value, &_threads_hazard_ptr, compare_value); |
| } |
| |
| inline ThreadsList* Thread::get_threads_hazard_ptr() { |
| return (ThreadsList*)OrderAccess::load_acquire(&_threads_hazard_ptr); |
| } |
| |
| inline void Thread::set_threads_hazard_ptr(ThreadsList* new_list) { |
| OrderAccess::release_store_fence(&_threads_hazard_ptr, new_list); |
| } |
| |
| inline void JavaThread::set_ext_suspended() { |
| set_suspend_flag (_ext_suspended); |
| } |
| inline void JavaThread::clear_ext_suspended() { |
| clear_suspend_flag(_ext_suspended); |
| } |
| |
| inline void JavaThread::set_external_suspend() { |
| set_suspend_flag(_external_suspend); |
| } |
| inline void JavaThread::clear_external_suspend() { |
| clear_suspend_flag(_external_suspend); |
| } |
| |
| inline void JavaThread::set_deopt_suspend() { |
| set_suspend_flag(_deopt_suspend); |
| } |
| inline void JavaThread::clear_deopt_suspend() { |
| clear_suspend_flag(_deopt_suspend); |
| } |
| |
| inline void JavaThread::set_pending_async_exception(oop e) { |
| _pending_async_exception = e; |
| _special_runtime_exit_condition = _async_exception; |
| set_has_async_exception(); |
| } |
| |
| #if defined(PPC64) || defined (AARCH64) |
| inline JavaThreadState JavaThread::thread_state() const { |
| return (JavaThreadState) OrderAccess::load_acquire((volatile jint*)&_thread_state); |
| } |
| |
| inline void JavaThread::set_thread_state(JavaThreadState s) { |
| assert(current_or_null() == NULL || current_or_null() == this, |
| "state change should only be called by the current thread"); |
| OrderAccess::release_store((volatile jint*)&_thread_state, (jint)s); |
| } |
| #endif |
| |
| inline void JavaThread::set_done_attaching_via_jni() { |
| _jni_attach_state = _attached_via_jni; |
| OrderAccess::fence(); |
| } |
| |
| inline bool JavaThread::stack_guard_zone_unused() { |
| return _stack_guard_state == stack_guard_unused; |
| } |
| |
| inline bool JavaThread::stack_yellow_reserved_zone_disabled() { |
| return _stack_guard_state == stack_guard_yellow_reserved_disabled; |
| } |
| |
| inline bool JavaThread::stack_reserved_zone_disabled() { |
| return _stack_guard_state == stack_guard_reserved_disabled; |
| } |
| |
| inline size_t JavaThread::stack_available(address cur_sp) { |
| // This code assumes java stacks grow down |
| address low_addr; // Limit on the address for deepest stack depth |
| if (_stack_guard_state == stack_guard_unused) { |
| low_addr = stack_end(); |
| } else { |
| low_addr = stack_reserved_zone_base(); |
| } |
| return cur_sp > low_addr ? cur_sp - low_addr : 0; |
| } |
| |
| inline bool JavaThread::stack_guards_enabled() { |
| #ifdef ASSERT |
| if (os::uses_stack_guard_pages() && |
| !(DisablePrimordialThreadGuardPages && os::is_primordial_thread())) { |
| assert(_stack_guard_state != stack_guard_unused, "guard pages must be in use"); |
| } |
| #endif |
| return _stack_guard_state == stack_guard_enabled; |
| } |
| |
| // The release make sure this store is done after storing the handshake |
| // operation or global state |
| inline void JavaThread::set_polling_page_release(void* poll_value) { |
| OrderAccess::release_store(polling_page_addr(), poll_value); |
| } |
| |
| // Caller is responsible for using a memory barrier if needed. |
| inline void JavaThread::set_polling_page(void* poll_value) { |
| *polling_page_addr() = poll_value; |
| } |
| |
| // The aqcquire make sure reading of polling page is done before |
| // the reading the handshake operation or the global state |
| inline volatile void* JavaThread::get_polling_page() { |
| return OrderAccess::load_acquire(polling_page_addr()); |
| } |
| |
| inline bool JavaThread::is_exiting() const { |
| // Use load-acquire so that setting of _terminated by |
| // JavaThread::exit() is seen more quickly. |
| TerminatedTypes l_terminated = (TerminatedTypes) |
| OrderAccess::load_acquire((volatile jint *) &_terminated); |
| return l_terminated == _thread_exiting || check_is_terminated(l_terminated); |
| } |
| |
| inline bool JavaThread::is_terminated() const { |
| // Use load-acquire so that setting of _terminated by |
| // JavaThread::exit() is seen more quickly. |
| TerminatedTypes l_terminated = (TerminatedTypes) |
| OrderAccess::load_acquire((volatile jint *) &_terminated); |
| return check_is_terminated(l_terminated); |
| } |
| |
| inline void JavaThread::set_terminated(TerminatedTypes t) { |
| // use release-store so the setting of _terminated is seen more quickly |
| OrderAccess::release_store((volatile jint *) &_terminated, (jint) t); |
| } |
| |
| // special for Threads::remove() which is static: |
| inline void JavaThread::set_terminated_value() { |
| // use release-store so the setting of _terminated is seen more quickly |
| OrderAccess::release_store((volatile jint *) &_terminated, (jint) _thread_terminated); |
| } |
| |
| #endif // SHARE_VM_RUNTIME_THREAD_INLINE_HPP |