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src/os_cpu/linux_x86/vm/orderAccess_linux_x86.inline.hpp

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rev 8910 : full patch for jfr
   1 /*
   2  * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *


  56   if (os::is_MP()) {
  57     // always use locked addl since mfence is sometimes expensive
  58 #ifdef AMD64
  59     __asm__ volatile ("lock; addl $0,0(%%rsp)" : : : "cc", "memory");
  60 #else
  61     __asm__ volatile ("lock; addl $0,0(%%esp)" : : : "cc", "memory");
  62 #endif
  63   }
  64 }
  65 
  66 inline jbyte    OrderAccess::load_acquire(volatile jbyte*   p) { return *p; }
  67 inline jshort   OrderAccess::load_acquire(volatile jshort*  p) { return *p; }
  68 inline jint     OrderAccess::load_acquire(volatile jint*    p) { return *p; }
  69 inline jlong    OrderAccess::load_acquire(volatile jlong*   p) { return Atomic::load(p); }
  70 inline jubyte   OrderAccess::load_acquire(volatile jubyte*  p) { return *p; }
  71 inline jushort  OrderAccess::load_acquire(volatile jushort* p) { return *p; }
  72 inline juint    OrderAccess::load_acquire(volatile juint*   p) { return *p; }
  73 inline julong   OrderAccess::load_acquire(volatile julong*  p) { return Atomic::load((volatile jlong*)p); }
  74 inline jfloat   OrderAccess::load_acquire(volatile jfloat*  p) { return *p; }
  75 inline jdouble  OrderAccess::load_acquire(volatile jdouble* p) { return jdouble_cast(Atomic::load((volatile jlong*)p)); }








  76 
  77 inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t*   p) { return *p; }





  78 inline void*    OrderAccess::load_ptr_acquire(volatile void*       p) { return *(void* volatile *)p; }
  79 inline void*    OrderAccess::load_ptr_acquire(const volatile void* p) { return *(void* const volatile *)p; }
  80 
  81 inline void     OrderAccess::release_store(volatile jbyte*   p, jbyte   v) { *p = v; }
  82 inline void     OrderAccess::release_store(volatile jshort*  p, jshort  v) { *p = v; }
  83 inline void     OrderAccess::release_store(volatile jint*    p, jint    v) { *p = v; }
  84 inline void     OrderAccess::release_store(volatile jlong*   p, jlong   v) { Atomic::store(v, p); }
  85 inline void     OrderAccess::release_store(volatile jubyte*  p, jubyte  v) { *p = v; }
  86 inline void     OrderAccess::release_store(volatile jushort* p, jushort v) { *p = v; }
  87 inline void     OrderAccess::release_store(volatile juint*   p, juint   v) { *p = v; }
  88 inline void     OrderAccess::release_store(volatile julong*  p, julong  v) { Atomic::store((jlong)v, (volatile jlong*)p); }
  89 inline void     OrderAccess::release_store(volatile jfloat*  p, jfloat  v) { *p = v; }
  90 inline void     OrderAccess::release_store(volatile jdouble* p, jdouble v) { release_store((volatile jlong *)p, jlong_cast(v)); }
  91 
  92 inline void     OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { *p = v; }
  93 inline void     OrderAccess::release_store_ptr(volatile void*     p, void*    v) { *(void* volatile *)p = v; }
  94 
  95 inline void     OrderAccess::store_fence(jbyte*  p, jbyte  v) {
  96   __asm__ volatile (  "xchgb (%2),%0"
  97                     : "=q" (v)


   1 /*
   2  * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *


  56   if (os::is_MP()) {
  57     // always use locked addl since mfence is sometimes expensive
  58 #ifdef AMD64
  59     __asm__ volatile ("lock; addl $0,0(%%rsp)" : : : "cc", "memory");
  60 #else
  61     __asm__ volatile ("lock; addl $0,0(%%esp)" : : : "cc", "memory");
  62 #endif
  63   }
  64 }
  65 
  66 inline jbyte    OrderAccess::load_acquire(volatile jbyte*   p) { return *p; }
  67 inline jshort   OrderAccess::load_acquire(volatile jshort*  p) { return *p; }
  68 inline jint     OrderAccess::load_acquire(volatile jint*    p) { return *p; }
  69 inline jlong    OrderAccess::load_acquire(volatile jlong*   p) { return Atomic::load(p); }
  70 inline jubyte   OrderAccess::load_acquire(volatile jubyte*  p) { return *p; }
  71 inline jushort  OrderAccess::load_acquire(volatile jushort* p) { return *p; }
  72 inline juint    OrderAccess::load_acquire(volatile juint*   p) { return *p; }
  73 inline julong   OrderAccess::load_acquire(volatile julong*  p) { return Atomic::load((volatile jlong*)p); }
  74 inline jfloat   OrderAccess::load_acquire(volatile jfloat*  p) { return *p; }
  75 inline jdouble  OrderAccess::load_acquire(volatile jdouble* p) { return jdouble_cast(Atomic::load((volatile jlong*)p)); }
  76 inline bool     OrderAccess::load_acquire(const volatile bool*  p) {
  77     assert(EnableJFR, "sanity check");
  78     return *p;
  79 }
  80 inline julong   OrderAccess::load_acquire(const volatile julong*  p) {
  81     assert(EnableJFR, "sanity check");
  82     return Atomic::load((volatile jlong*)p);
  83 }
  84 
  85 inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t*   p) { return *p; }
  86 inline uintptr_t OrderAccess::load_ptr_acquire(const volatile uintptr_t* p) {
  87     assert(EnableJFR, "sanity check");
  88     return *p;
  89 }
  90 
  91 inline void*    OrderAccess::load_ptr_acquire(volatile void*       p) { return *(void* volatile *)p; }
  92 inline void*    OrderAccess::load_ptr_acquire(const volatile void* p) { return *(void* const volatile *)p; }
  93 
  94 inline void     OrderAccess::release_store(volatile jbyte*   p, jbyte   v) { *p = v; }
  95 inline void     OrderAccess::release_store(volatile jshort*  p, jshort  v) { *p = v; }
  96 inline void     OrderAccess::release_store(volatile jint*    p, jint    v) { *p = v; }
  97 inline void     OrderAccess::release_store(volatile jlong*   p, jlong   v) { Atomic::store(v, p); }
  98 inline void     OrderAccess::release_store(volatile jubyte*  p, jubyte  v) { *p = v; }
  99 inline void     OrderAccess::release_store(volatile jushort* p, jushort v) { *p = v; }
 100 inline void     OrderAccess::release_store(volatile juint*   p, juint   v) { *p = v; }
 101 inline void     OrderAccess::release_store(volatile julong*  p, julong  v) { Atomic::store((jlong)v, (volatile jlong*)p); }
 102 inline void     OrderAccess::release_store(volatile jfloat*  p, jfloat  v) { *p = v; }
 103 inline void     OrderAccess::release_store(volatile jdouble* p, jdouble v) { release_store((volatile jlong *)p, jlong_cast(v)); }
 104 
 105 inline void     OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { *p = v; }
 106 inline void     OrderAccess::release_store_ptr(volatile void*     p, void*    v) { *(void* volatile *)p = v; }
 107 
 108 inline void     OrderAccess::store_fence(jbyte*  p, jbyte  v) {
 109   __asm__ volatile (  "xchgb (%2),%0"
 110                     : "=q" (v)


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