Mercurial > hg > graal-compiler
view src/os_cpu/windows_x86/vm/atomic_windows_x86.inline.hpp @ 20331:18bf0b66de52
8044406: JVM crash with JDK8 (build 1.8.0-b132) with G1 GC
Summary: Fill the last card that has been allocated into with a dummy object
Reviewed-by: tschatzl, mgerdin
author | poonam |
---|---|
date | Tue, 19 Aug 2014 02:05:49 -0700 |
parents | 63e54c37ac64 |
children |
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/* * Copyright (c) 1999, 2013, 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_WINDOWS_X86_VM_ATOMIC_WINDOWS_X86_INLINE_HPP #define OS_CPU_WINDOWS_X86_VM_ATOMIC_WINDOWS_X86_INLINE_HPP #include "runtime/atomic.hpp" #include "runtime/os.hpp" #include "vm_version_x86.hpp" // The following alternative implementations are needed because // Windows 95 doesn't support (some of) the corresponding Windows NT // calls. Furthermore, these versions allow inlining in the caller. // (More precisely: The documentation for InterlockedExchange says // it is supported for Windows 95. However, when single-stepping // through the assembly code we cannot step into the routine and // when looking at the routine address we see only garbage code. // Better safe then sorry!). Was bug 7/31/98 (gri). // // Performance note: On uniprocessors, the 'lock' prefixes are not // necessary (and expensive). We should generate separate cases if // this becomes a performance problem. #pragma warning(disable: 4035) // Disables warnings reporting missing return statement 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 // VC++ doesn't like the lock prefix to be on a single line // so we can't insert a label after the lock prefix. // By emitting a lock prefix, we can define a label after it. #define LOCK_IF_MP(mp) __asm cmp mp, 0 \ __asm je L0 \ __asm _emit 0xF0 \ __asm L0: #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 jint Atomic::add (jint add_value, volatile jint* dest) { return (jint)(*os::atomic_add_func)(add_value, dest); } inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { return (intptr_t)(*os::atomic_add_ptr_func)(add_value, dest); } inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { return (void*)(*os::atomic_add_ptr_func)(add_value, (volatile intptr_t*)dest); } inline void Atomic::inc (volatile jint* dest) { (void)add (1, dest); } inline void Atomic::inc_ptr(volatile intptr_t* dest) { (void)add_ptr(1, dest); } inline void Atomic::inc_ptr(volatile void* dest) { (void)add_ptr(1, dest); } inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); } inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); } inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); } inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { return (jint)(*os::atomic_xchg_func)(exchange_value, dest); } inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { return (intptr_t)(os::atomic_xchg_ptr_func)(exchange_value, dest); } inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { return (void *)(os::atomic_xchg_ptr_func)((intptr_t)exchange_value, (volatile intptr_t*)dest); } inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { return (*os::atomic_cmpxchg_func)(exchange_value, dest, compare_value); } inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { return (*os::atomic_cmpxchg_long_func)(exchange_value, dest, compare_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 jint Atomic::add (jint add_value, volatile jint* dest) { int mp = os::is_MP(); __asm { mov edx, dest; mov eax, add_value; mov ecx, eax; LOCK_IF_MP(mp) xadd dword ptr [edx], eax; add eax, ecx; } } inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { return (intptr_t)add((jint)add_value, (volatile jint*)dest); } inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { return (void*)add((jint)add_value, (volatile jint*)dest); } inline void Atomic::inc (volatile jint* dest) { // alternative for InterlockedIncrement int mp = os::is_MP(); __asm { mov edx, dest; LOCK_IF_MP(mp) add dword ptr [edx], 1; } } inline void Atomic::inc_ptr(volatile intptr_t* dest) { inc((volatile jint*)dest); } inline void Atomic::inc_ptr(volatile void* dest) { inc((volatile jint*)dest); } inline void Atomic::dec (volatile jint* dest) { // alternative for InterlockedDecrement int mp = os::is_MP(); __asm { mov edx, dest; LOCK_IF_MP(mp) sub dword ptr [edx], 1; } } inline void Atomic::dec_ptr(volatile intptr_t* dest) { dec((volatile jint*)dest); } inline void Atomic::dec_ptr(volatile void* dest) { dec((volatile jint*)dest); } inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { // alternative for InterlockedExchange __asm { mov eax, exchange_value; mov ecx, dest; xchg eax, dword ptr [ecx]; } } inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest); } inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { return (void*)xchg((jint)exchange_value, (volatile jint*)dest); } inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { // alternative for InterlockedCompareExchange int mp = os::is_MP(); __asm { mov edx, dest mov ecx, exchange_value mov eax, compare_value LOCK_IF_MP(mp) cmpxchg dword ptr [edx], ecx } } inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { int mp = os::is_MP(); jint ex_lo = (jint)exchange_value; jint ex_hi = *( ((jint*)&exchange_value) + 1 ); jint cmp_lo = (jint)compare_value; jint cmp_hi = *( ((jint*)&compare_value) + 1 ); __asm { push ebx push edi mov eax, cmp_lo mov edx, cmp_hi mov edi, dest mov ebx, ex_lo mov ecx, ex_hi LOCK_IF_MP(mp) cmpxchg8b qword ptr [edi] pop edi pop ebx } } 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; volatile jlong* pdest = &dest; __asm { mov eax, src fild qword ptr [eax] mov eax, pdest fistp qword ptr [eax] } return dest; } inline void Atomic::store(jlong store_value, volatile jlong* dest) { volatile jlong* src = &store_value; __asm { mov eax, src fild qword ptr [eax] mov eax, dest fistp qword ptr [eax] } } inline void Atomic::store(jlong store_value, jlong* dest) { Atomic::store(store_value, (volatile jlong*)dest); } #endif // AMD64 #pragma warning(default: 4035) // Enables warnings reporting missing return statement #endif // OS_CPU_WINDOWS_X86_VM_ATOMIC_WINDOWS_X86_INLINE_HPP