/*
* 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
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*/
#ifndef SHARE_VM_RUNTIME_THREAD_INLINE_HPP
#define SHARE_VM_RUNTIME_THREAD_INLINE_HPP
#include "runtime/atomic.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) {
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(void* poll_value) {
OrderAccess::release_store(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