8145221: Use trampolines for i2i and i2c entries in Methods that are stored in CDS archive
Summary: This optimization reduces the size of the RW region of the CDS archive. It also reduces the amount of pages in the RW region that are actually written into during runtime.
Reviewed-by: dlong, iklam, jiangli
Contributed-by: ioi.lam@oracle.com, calvin.cheung@oracle.com, goetz.lindenmaier@sap.com
/*
* Copyright (c) 2012, 2014, 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
#define SHARE_VM_RUNTIME_THREAD_INLINE_HPP_SCOPE
#include "runtime/atomic.inline.hpp"
#include "runtime/os.inline.hpp"
#include "runtime/thread.hpp"
#undef SHARE_VM_RUNTIME_THREAD_INLINE_HPP_SCOPE
inline void Thread::set_suspend_flag(SuspendFlags f) {
assert(sizeof(jint) == sizeof(_suspend_flags), "size mismatch");
uint32_t flags;
do {
flags = _suspend_flags;
}
while (Atomic::cmpxchg((jint)(flags | f),
(volatile jint*)&_suspend_flags,
(jint)flags) != (jint)flags);
}
inline void Thread::clear_suspend_flag(SuspendFlags f) {
assert(sizeof(jint) == sizeof(_suspend_flags), "size mismatch");
uint32_t flags;
do {
flags = _suspend_flags;
}
while (Atomic::cmpxchg((jint)(flags & ~f),
(volatile jint*)&_suspend_flags,
(jint)flags) != (jint)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 jlong Thread::cooked_allocated_bytes() {
jlong allocated_bytes = OrderAccess::load_acquire(&_allocated_bytes);
if (UseTLAB) {
size_t used_bytes = tlab().used_bytes();
if ((ssize_t)used_bytes > 0) {
// More-or-less valid tlab. The load_acquire above should ensure
// that the result of the add is <= the instantaneous value.
return allocated_bytes + used_bytes;
}
}
return allocated_bytes;
}
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()) {
assert(_stack_guard_state != stack_guard_unused, "guard pages must be in use");
}
#endif
return _stack_guard_state == stack_guard_enabled;
}
#endif // SHARE_VM_RUNTIME_THREAD_INLINE_HPP