1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/os_cpu/windows_x86/vm/atomic_windows_x86.inline.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,287 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef OS_CPU_WINDOWS_X86_VM_ATOMIC_WINDOWS_X86_INLINE_HPP
1.29 +#define OS_CPU_WINDOWS_X86_VM_ATOMIC_WINDOWS_X86_INLINE_HPP
1.30 +
1.31 +#include "runtime/atomic.hpp"
1.32 +#include "runtime/os.hpp"
1.33 +#include "vm_version_x86.hpp"
1.34 +
1.35 +// The following alternative implementations are needed because
1.36 +// Windows 95 doesn't support (some of) the corresponding Windows NT
1.37 +// calls. Furthermore, these versions allow inlining in the caller.
1.38 +// (More precisely: The documentation for InterlockedExchange says
1.39 +// it is supported for Windows 95. However, when single-stepping
1.40 +// through the assembly code we cannot step into the routine and
1.41 +// when looking at the routine address we see only garbage code.
1.42 +// Better safe then sorry!). Was bug 7/31/98 (gri).
1.43 +//
1.44 +// Performance note: On uniprocessors, the 'lock' prefixes are not
1.45 +// necessary (and expensive). We should generate separate cases if
1.46 +// this becomes a performance problem.
1.47 +
1.48 +#pragma warning(disable: 4035) // Disables warnings reporting missing return statement
1.49 +
1.50 +inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; }
1.51 +inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; }
1.52 +inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; }
1.53 +
1.54 +inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; }
1.55 +inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; }
1.56 +
1.57 +inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; }
1.58 +inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; }
1.59 +inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; }
1.60 +
1.61 +
1.62 +inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; }
1.63 +inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; }
1.64 +
1.65 +// Adding a lock prefix to an instruction on MP machine
1.66 +// VC++ doesn't like the lock prefix to be on a single line
1.67 +// so we can't insert a label after the lock prefix.
1.68 +// By emitting a lock prefix, we can define a label after it.
1.69 +#define LOCK_IF_MP(mp) __asm cmp mp, 0 \
1.70 + __asm je L0 \
1.71 + __asm _emit 0xF0 \
1.72 + __asm L0:
1.73 +
1.74 +#ifdef AMD64
1.75 +inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
1.76 +inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
1.77 +
1.78 +inline jint Atomic::add (jint add_value, volatile jint* dest) {
1.79 + return (jint)(*os::atomic_add_func)(add_value, dest);
1.80 +}
1.81 +
1.82 +inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
1.83 + return (intptr_t)(*os::atomic_add_ptr_func)(add_value, dest);
1.84 +}
1.85 +
1.86 +inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
1.87 + return (void*)(*os::atomic_add_ptr_func)(add_value, (volatile intptr_t*)dest);
1.88 +}
1.89 +
1.90 +inline void Atomic::inc (volatile jint* dest) {
1.91 + (void)add (1, dest);
1.92 +}
1.93 +
1.94 +inline void Atomic::inc_ptr(volatile intptr_t* dest) {
1.95 + (void)add_ptr(1, dest);
1.96 +}
1.97 +
1.98 +inline void Atomic::inc_ptr(volatile void* dest) {
1.99 + (void)add_ptr(1, dest);
1.100 +}
1.101 +
1.102 +inline void Atomic::dec (volatile jint* dest) {
1.103 + (void)add (-1, dest);
1.104 +}
1.105 +
1.106 +inline void Atomic::dec_ptr(volatile intptr_t* dest) {
1.107 + (void)add_ptr(-1, dest);
1.108 +}
1.109 +
1.110 +inline void Atomic::dec_ptr(volatile void* dest) {
1.111 + (void)add_ptr(-1, dest);
1.112 +}
1.113 +
1.114 +inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
1.115 + return (jint)(*os::atomic_xchg_func)(exchange_value, dest);
1.116 +}
1.117 +
1.118 +inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
1.119 + return (intptr_t)(os::atomic_xchg_ptr_func)(exchange_value, dest);
1.120 +}
1.121 +
1.122 +inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
1.123 + return (void *)(os::atomic_xchg_ptr_func)((intptr_t)exchange_value, (volatile intptr_t*)dest);
1.124 +}
1.125 +
1.126 +inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
1.127 + return (*os::atomic_cmpxchg_func)(exchange_value, dest, compare_value);
1.128 +}
1.129 +
1.130 +inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
1.131 + return (*os::atomic_cmpxchg_long_func)(exchange_value, dest, compare_value);
1.132 +}
1.133 +
1.134 +inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
1.135 + return (intptr_t)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value);
1.136 +}
1.137 +
1.138 +inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
1.139 + return (void*)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value);
1.140 +}
1.141 +
1.142 +inline jlong Atomic::load(volatile jlong* src) { return *src; }
1.143 +
1.144 +#else // !AMD64
1.145 +
1.146 +inline jint Atomic::add (jint add_value, volatile jint* dest) {
1.147 + int mp = os::is_MP();
1.148 + __asm {
1.149 + mov edx, dest;
1.150 + mov eax, add_value;
1.151 + mov ecx, eax;
1.152 + LOCK_IF_MP(mp)
1.153 + xadd dword ptr [edx], eax;
1.154 + add eax, ecx;
1.155 + }
1.156 +}
1.157 +
1.158 +inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
1.159 + return (intptr_t)add((jint)add_value, (volatile jint*)dest);
1.160 +}
1.161 +
1.162 +inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
1.163 + return (void*)add((jint)add_value, (volatile jint*)dest);
1.164 +}
1.165 +
1.166 +inline void Atomic::inc (volatile jint* dest) {
1.167 + // alternative for InterlockedIncrement
1.168 + int mp = os::is_MP();
1.169 + __asm {
1.170 + mov edx, dest;
1.171 + LOCK_IF_MP(mp)
1.172 + add dword ptr [edx], 1;
1.173 + }
1.174 +}
1.175 +
1.176 +inline void Atomic::inc_ptr(volatile intptr_t* dest) {
1.177 + inc((volatile jint*)dest);
1.178 +}
1.179 +
1.180 +inline void Atomic::inc_ptr(volatile void* dest) {
1.181 + inc((volatile jint*)dest);
1.182 +}
1.183 +
1.184 +inline void Atomic::dec (volatile jint* dest) {
1.185 + // alternative for InterlockedDecrement
1.186 + int mp = os::is_MP();
1.187 + __asm {
1.188 + mov edx, dest;
1.189 + LOCK_IF_MP(mp)
1.190 + sub dword ptr [edx], 1;
1.191 + }
1.192 +}
1.193 +
1.194 +inline void Atomic::dec_ptr(volatile intptr_t* dest) {
1.195 + dec((volatile jint*)dest);
1.196 +}
1.197 +
1.198 +inline void Atomic::dec_ptr(volatile void* dest) {
1.199 + dec((volatile jint*)dest);
1.200 +}
1.201 +
1.202 +inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
1.203 + // alternative for InterlockedExchange
1.204 + __asm {
1.205 + mov eax, exchange_value;
1.206 + mov ecx, dest;
1.207 + xchg eax, dword ptr [ecx];
1.208 + }
1.209 +}
1.210 +
1.211 +inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
1.212 + return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest);
1.213 +}
1.214 +
1.215 +inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
1.216 + return (void*)xchg((jint)exchange_value, (volatile jint*)dest);
1.217 +}
1.218 +
1.219 +inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
1.220 + // alternative for InterlockedCompareExchange
1.221 + int mp = os::is_MP();
1.222 + __asm {
1.223 + mov edx, dest
1.224 + mov ecx, exchange_value
1.225 + mov eax, compare_value
1.226 + LOCK_IF_MP(mp)
1.227 + cmpxchg dword ptr [edx], ecx
1.228 + }
1.229 +}
1.230 +
1.231 +inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
1.232 + int mp = os::is_MP();
1.233 + jint ex_lo = (jint)exchange_value;
1.234 + jint ex_hi = *( ((jint*)&exchange_value) + 1 );
1.235 + jint cmp_lo = (jint)compare_value;
1.236 + jint cmp_hi = *( ((jint*)&compare_value) + 1 );
1.237 + __asm {
1.238 + push ebx
1.239 + push edi
1.240 + mov eax, cmp_lo
1.241 + mov edx, cmp_hi
1.242 + mov edi, dest
1.243 + mov ebx, ex_lo
1.244 + mov ecx, ex_hi
1.245 + LOCK_IF_MP(mp)
1.246 + cmpxchg8b qword ptr [edi]
1.247 + pop edi
1.248 + pop ebx
1.249 + }
1.250 +}
1.251 +
1.252 +inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
1.253 + return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
1.254 +}
1.255 +
1.256 +inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
1.257 + return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
1.258 +}
1.259 +
1.260 +inline jlong Atomic::load(volatile jlong* src) {
1.261 + volatile jlong dest;
1.262 + volatile jlong* pdest = &dest;
1.263 + __asm {
1.264 + mov eax, src
1.265 + fild qword ptr [eax]
1.266 + mov eax, pdest
1.267 + fistp qword ptr [eax]
1.268 + }
1.269 + return dest;
1.270 +}
1.271 +
1.272 +inline void Atomic::store(jlong store_value, volatile jlong* dest) {
1.273 + volatile jlong* src = &store_value;
1.274 + __asm {
1.275 + mov eax, src
1.276 + fild qword ptr [eax]
1.277 + mov eax, dest
1.278 + fistp qword ptr [eax]
1.279 + }
1.280 +}
1.281 +
1.282 +inline void Atomic::store(jlong store_value, jlong* dest) {
1.283 + Atomic::store(store_value, (volatile jlong*)dest);
1.284 +}
1.285 +
1.286 +#endif // AMD64
1.287 +
1.288 +#pragma warning(default: 4035) // Enables warnings reporting missing return statement
1.289 +
1.290 +#endif // OS_CPU_WINDOWS_X86_VM_ATOMIC_WINDOWS_X86_INLINE_HPP
