Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/atomic.hpp @ 894:665be97e8704
6863420: os::javaTimeNanos() go backward on Solaris x86
Summary: Use new atomic long load method Atomic::load() to load max_hrtime.
Reviewed-by: never, ysr, johnc, phh, dcubed, acorn
| author | kvn |
|---|---|
| date | Sun, 26 Jul 2009 16:40:14 -0700 |
| parents | d1605aabd0a1 |
| children | 89e0543e1737 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 1999-2008 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 class Atomic : AllStatic { | |
| 26 public: | |
| 27 // Atomically store to a location | |
| 28 static void store (jbyte store_value, jbyte* dest); | |
| 29 static void store (jshort store_value, jshort* dest); | |
| 30 static void store (jint store_value, jint* dest); | |
| 31 static void store (jlong store_value, jlong* dest); | |
| 32 static void store_ptr(intptr_t store_value, intptr_t* dest); | |
| 33 static void store_ptr(void* store_value, void* dest); | |
| 34 | |
| 35 static void store (jbyte store_value, volatile jbyte* dest); | |
| 36 static void store (jshort store_value, volatile jshort* dest); | |
| 37 static void store (jint store_value, volatile jint* dest); | |
| 38 static void store (jlong store_value, volatile jlong* dest); | |
| 39 static void store_ptr(intptr_t store_value, volatile intptr_t* dest); | |
| 40 static void store_ptr(void* store_value, volatile void* dest); | |
| 41 | |
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665be97e8704
6863420: os::javaTimeNanos() go backward on Solaris x86
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42 static jlong load(volatile jlong* src); |
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6863420: os::javaTimeNanos() go backward on Solaris x86
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43 |
| 0 | 44 // Atomically add to a location, return updated value |
| 45 static jint add (jint add_value, volatile jint* dest); | |
| 46 static intptr_t add_ptr(intptr_t add_value, volatile intptr_t* dest); | |
| 47 static void* add_ptr(intptr_t add_value, volatile void* dest); | |
| 48 | |
| 49 // Atomically increment location | |
| 50 static void inc (volatile jint* dest); | |
| 51 static void inc_ptr(volatile intptr_t* dest); | |
| 52 static void inc_ptr(volatile void* dest); | |
| 53 | |
| 54 // Atomically decrement a location | |
| 55 static void dec (volatile jint* dest); | |
| 56 static void dec_ptr(volatile intptr_t* dest); | |
| 57 static void dec_ptr(volatile void* dest); | |
| 58 | |
| 59 // Performs atomic exchange of *dest with exchange_value. Returns old prior value of *dest. | |
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60 static jint xchg(jint exchange_value, volatile jint* dest); |
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61 static unsigned int xchg(unsigned int exchange_value, |
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62 volatile unsigned int* dest); |
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63 |
| 0 | 64 static intptr_t xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest); |
| 65 static void* xchg_ptr(void* exchange_value, volatile void* dest); | |
| 66 | |
| 67 // Performs atomic compare of *dest and compare_value, and exchanges *dest with exchange_value | |
| 68 // if the comparison succeeded. Returns prior value of *dest. Guarantees a two-way memory | |
| 69 // barrier across the cmpxchg. I.e., it's really a 'fence_cmpxchg_acquire'. | |
| 70 static jbyte cmpxchg (jbyte exchange_value, volatile jbyte* dest, jbyte compare_value); | |
| 71 static jint cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value); | |
| 72 static jlong cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value); | |
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73 |
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74 static unsigned int cmpxchg(unsigned int exchange_value, |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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75 volatile unsigned int* dest, |
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ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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76 unsigned int compare_value); |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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77 |
| 0 | 78 static intptr_t cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value); |
| 79 static void* cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value); | |
| 80 }; |