Mercurial > hg > truffle
view src/os_cpu/bsd_x86/vm/atomic_bsd_x86.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 | 63e54c37ac64 |
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/* * Copyright (c) 1999, 2011, 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 OS_CPU_BSD_X86_VM_ATOMIC_BSD_X86_INLINE_HPP #define OS_CPU_BSD_X86_VM_ATOMIC_BSD_X86_INLINE_HPP #include "orderAccess_bsd_x86.inline.hpp" #include "runtime/atomic.hpp" #include "runtime/os.hpp" #include "vm_version_x86.hpp" // Implementation of class atomic inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; } inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; } inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; } inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; } inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; } inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; } inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; } inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; } inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; } inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; } // Adding a lock prefix to an instruction on MP machine #define LOCK_IF_MP(mp) "cmp $0, " #mp "; je 1f; lock; 1: " inline jint Atomic::add (jint add_value, volatile jint* dest) { jint addend = add_value; int mp = os::is_MP(); __asm__ volatile ( LOCK_IF_MP(%3) "xaddl %0,(%2)" : "=r" (addend) : "0" (addend), "r" (dest), "r" (mp) : "cc", "memory"); return addend + add_value; } inline void Atomic::inc (volatile jint* dest) { int mp = os::is_MP(); __asm__ volatile (LOCK_IF_MP(%1) "addl $1,(%0)" : : "r" (dest), "r" (mp) : "cc", "memory"); } inline void Atomic::inc_ptr(volatile void* dest) { inc_ptr((volatile intptr_t*)dest); } inline void Atomic::dec (volatile jint* dest) { int mp = os::is_MP(); __asm__ volatile (LOCK_IF_MP(%1) "subl $1,(%0)" : : "r" (dest), "r" (mp) : "cc", "memory"); } inline void Atomic::dec_ptr(volatile void* dest) { dec_ptr((volatile intptr_t*)dest); } inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { __asm__ volatile ( "xchgl (%2),%0" : "=r" (exchange_value) : "0" (exchange_value), "r" (dest) : "memory"); return exchange_value; } inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest); } inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { int mp = os::is_MP(); __asm__ volatile (LOCK_IF_MP(%4) "cmpxchgl %1,(%3)" : "=a" (exchange_value) : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp) : "cc", "memory"); return exchange_value; } #ifdef AMD64 inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; } inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; } inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { intptr_t addend = add_value; bool mp = os::is_MP(); __asm__ __volatile__ (LOCK_IF_MP(%3) "xaddq %0,(%2)" : "=r" (addend) : "0" (addend), "r" (dest), "r" (mp) : "cc", "memory"); return addend + add_value; } inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { return (void*)add_ptr(add_value, (volatile intptr_t*)dest); } inline void Atomic::inc_ptr(volatile intptr_t* dest) { bool mp = os::is_MP(); __asm__ __volatile__ (LOCK_IF_MP(%1) "addq $1,(%0)" : : "r" (dest), "r" (mp) : "cc", "memory"); } inline void Atomic::dec_ptr(volatile intptr_t* dest) { bool mp = os::is_MP(); __asm__ __volatile__ (LOCK_IF_MP(%1) "subq $1,(%0)" : : "r" (dest), "r" (mp) : "cc", "memory"); } inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { __asm__ __volatile__ ("xchgq (%2),%0" : "=r" (exchange_value) : "0" (exchange_value), "r" (dest) : "memory"); return exchange_value; } inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { bool mp = os::is_MP(); __asm__ __volatile__ (LOCK_IF_MP(%4) "cmpxchgq %1,(%3)" : "=a" (exchange_value) : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp) : "cc", "memory"); return exchange_value; } inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { return (intptr_t)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value); } inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { return (void*)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value); } inline jlong Atomic::load(volatile jlong* src) { return *src; } #else // !AMD64 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { return (intptr_t)Atomic::add((jint)add_value, (volatile jint*)dest); } inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { return (void*)Atomic::add((jint)add_value, (volatile jint*)dest); } inline void Atomic::inc_ptr(volatile intptr_t* dest) { inc((volatile jint*)dest); } inline void Atomic::dec_ptr(volatile intptr_t* dest) { dec((volatile jint*)dest); } inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest); } extern "C" { // defined in bsd_x86.s jlong _Atomic_cmpxchg_long(jlong, volatile jlong*, jlong, bool); void _Atomic_move_long(volatile jlong* src, volatile jlong* dst); } inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { return _Atomic_cmpxchg_long(exchange_value, dest, compare_value, os::is_MP()); } inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value); } inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value); } inline jlong Atomic::load(volatile jlong* src) { volatile jlong dest; _Atomic_move_long(src, &dest); return dest; } inline void Atomic::store(jlong store_value, jlong* dest) { _Atomic_move_long((volatile jlong*)&store_value, (volatile jlong*)dest); } inline void Atomic::store(jlong store_value, volatile jlong* dest) { _Atomic_move_long((volatile jlong*)&store_value, dest); } #endif // AMD64 #endif // OS_CPU_BSD_X86_VM_ATOMIC_BSD_X86_INLINE_HPP