jdk8-mips64-public/hotspot: src/os_cpu/windows_x86/vm/atomic_windows

src/os_cpu/windows_x86/vm/atomic_windows_x86.inline.hpp@f90c822e73f8 (annotated)

src/os_cpu/windows_x86/vm/atomic_windows_x86.inline.hpp

Wed, 27 Apr 2016 01:25:04 +0800

author: aoqi
date: Wed, 27 Apr 2016 01:25:04 +0800
changeset 0: f90c822e73f8
child 6876: 710a3c8b516e
permissions: -rw-r--r--

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http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

 /*
  * 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

Mercurial > jdk8-mips64-public > hotspot / annotate

src/os_cpu/windows_x86/vm/atomic_windows_x86.inline.hpp@f90c822e73f8 (annotated)

src/os_cpu/windows_x86/vm/atomic_windows_x86.inline.hpp