Mercurial > hg > truffle
view src/os_cpu/bsd_zero/vm/orderAccess_bsd_zero.inline.hpp @ 7432:0b3d19153cc6
8001028: Improve GC option handling
Summary: If there are not enough native resources to create the ReferenceHandler or Finalizer Java threads, the VM will attempt to throw an OOME before the java.lang.Class class has been initialized. This can result in assertion failures and other crashes. Move the initialization of the java.lang.Class class to just before the initialization of the java.lang.ref.Finalizer class.
Reviewed-by: jwilhelm, dholmes, coleenp
author | johnc |
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date | Wed, 12 Dec 2012 12:07:32 -0800 |
parents | f08d439fab8c |
children |
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/* * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright 2007, 2008, 2009 Red Hat, Inc. * 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 OS_CPU_BSD_ZERO_VM_ORDERACCESS_BSD_ZERO_INLINE_HPP #define OS_CPU_BSD_ZERO_VM_ORDERACCESS_BSD_ZERO_INLINE_HPP #include "runtime/orderAccess.hpp" #include "vm_version_zero.hpp" #ifdef ARM /* * ARM Kernel helper for memory barrier. * Using __asm __volatile ("":::"memory") does not work reliable on ARM * and gcc __sync_synchronize(); implementation does not use the kernel * helper for all gcc versions so it is unreliable to use as well. */ typedef void (__kernel_dmb_t) (void); #define __kernel_dmb (*(__kernel_dmb_t *) 0xffff0fa0) #define FULL_MEM_BARRIER __kernel_dmb() #define READ_MEM_BARRIER __kernel_dmb() #define WRITE_MEM_BARRIER __kernel_dmb() #else // ARM #define FULL_MEM_BARRIER __sync_synchronize() #ifdef PPC #ifdef __NO_LWSYNC__ #define READ_MEM_BARRIER __asm __volatile ("sync":::"memory") #define WRITE_MEM_BARRIER __asm __volatile ("sync":::"memory") #else #define READ_MEM_BARRIER __asm __volatile ("lwsync":::"memory") #define WRITE_MEM_BARRIER __asm __volatile ("lwsync":::"memory") #endif #else // PPC #define READ_MEM_BARRIER __asm __volatile ("":::"memory") #define WRITE_MEM_BARRIER __asm __volatile ("":::"memory") #endif // PPC #endif // ARM inline void OrderAccess::loadload() { acquire(); } inline void OrderAccess::storestore() { release(); } inline void OrderAccess::loadstore() { acquire(); } inline void OrderAccess::storeload() { fence(); } inline void OrderAccess::acquire() { READ_MEM_BARRIER; } inline void OrderAccess::release() { WRITE_MEM_BARRIER; } inline void OrderAccess::fence() { FULL_MEM_BARRIER; } inline jbyte OrderAccess::load_acquire(volatile jbyte* p) { jbyte data = *p; acquire(); return data; } inline jshort OrderAccess::load_acquire(volatile jshort* p) { jshort data = *p; acquire(); return data; } inline jint OrderAccess::load_acquire(volatile jint* p) { jint data = *p; acquire(); return data; } inline jlong OrderAccess::load_acquire(volatile jlong* p) { jlong tmp; os::atomic_copy64(p, &tmp); acquire(); return tmp; } inline jubyte OrderAccess::load_acquire(volatile jubyte* p) { jubyte data = *p; acquire(); return data; } inline jushort OrderAccess::load_acquire(volatile jushort* p) { jushort data = *p; acquire(); return data; } inline juint OrderAccess::load_acquire(volatile juint* p) { juint data = *p; acquire(); return data; } inline julong OrderAccess::load_acquire(volatile julong* p) { julong tmp; os::atomic_copy64(p, &tmp); acquire(); return tmp; } inline jfloat OrderAccess::load_acquire(volatile jfloat* p) { jfloat data = *p; acquire(); return data; } inline jdouble OrderAccess::load_acquire(volatile jdouble* p) { jdouble tmp; os::atomic_copy64(p, &tmp); acquire(); return tmp; } inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t* p) { intptr_t data = *p; acquire(); return data; } inline void* OrderAccess::load_ptr_acquire(volatile void* p) { void *data = *(void* volatile *)p; acquire(); return data; } inline void* OrderAccess::load_ptr_acquire(const volatile void* p) { void *data = *(void* const volatile *)p; acquire(); return data; } inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { release(); *p = v; } inline void OrderAccess::release_store(volatile jshort* p, jshort v) { release(); *p = v; } inline void OrderAccess::release_store(volatile jint* p, jint v) { release(); *p = v; } inline void OrderAccess::release_store(volatile jlong* p, jlong v) { release(); os::atomic_copy64(&v, p); } inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { release(); *p = v; } inline void OrderAccess::release_store(volatile jushort* p, jushort v) { release(); *p = v; } inline void OrderAccess::release_store(volatile juint* p, juint v) { release(); *p = v; } inline void OrderAccess::release_store(volatile julong* p, julong v) { release(); os::atomic_copy64(&v, p); } inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { release(); *p = v; } inline void OrderAccess::release_store(volatile jdouble* p, jdouble v) { release(); os::atomic_copy64(&v, p); } inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { release(); *p = v; } inline void OrderAccess::release_store_ptr(volatile void* p, void* v) { release(); *(void* volatile *)p = v; } inline void OrderAccess::store_fence(jbyte* p, jbyte v) { *p = v; fence(); } inline void OrderAccess::store_fence(jshort* p, jshort v) { *p = v; fence(); } inline void OrderAccess::store_fence(jint* p, jint v) { *p = v; fence(); } inline void OrderAccess::store_fence(jlong* p, jlong v) { os::atomic_copy64(&v, p); fence(); } inline void OrderAccess::store_fence(jubyte* p, jubyte v) { *p = v; fence(); } inline void OrderAccess::store_fence(jushort* p, jushort v) { *p = v; fence(); } inline void OrderAccess::store_fence(juint* p, juint v) { *p = v; fence(); } inline void OrderAccess::store_fence(julong* p, julong v) { os::atomic_copy64(&v, p); fence(); } inline void OrderAccess::store_fence(jfloat* p, jfloat v) { *p = v; fence(); } inline void OrderAccess::store_fence(jdouble* p, jdouble v) { os::atomic_copy64(&v, p); fence(); } inline void OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { *p = v; fence(); } inline void OrderAccess::store_ptr_fence(void** p, void* v) { *p = v; fence(); } inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { release_store(p, v); fence(); } inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { release_store(p, v); fence(); } inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { release_store(p, v); fence(); } inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { release_store(p, v); fence(); } inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { release_store(p, v); fence(); } inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { release_store(p, v); fence(); } inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { release_store(p, v); fence(); } inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { release_store(p, v); fence(); } inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { release_store(p, v); fence(); } inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { release_store(p, v); fence(); } inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { release_store_ptr(p, v); fence(); } inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { release_store_ptr(p, v); fence(); } #endif // OS_CPU_BSD_ZERO_VM_ORDERACCESS_BSD_ZERO_INLINE_HPP