Mercurial > hg > truffle
annotate src/share/vm/runtime/atomic.hpp @ 113:ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
| author | coleenp |
|---|---|
| date | Sun, 13 Apr 2008 17:43:42 -0400 |
| parents | a61af66fc99e |
| children | d1605aabd0a1 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 1999-2003 Sun Microsystems, Inc. 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 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 | |
| 42 // Atomically add to a location, return updated value | |
| 43 static jint add (jint add_value, volatile jint* dest); | |
| 44 static intptr_t add_ptr(intptr_t add_value, volatile intptr_t* dest); | |
| 45 static void* add_ptr(intptr_t add_value, volatile void* dest); | |
| 46 | |
| 47 // Atomically increment location | |
| 48 static void inc (volatile jint* dest); | |
| 49 static void inc_ptr(volatile intptr_t* dest); | |
| 50 static void inc_ptr(volatile void* dest); | |
| 51 | |
| 52 // Atomically decrement a location | |
| 53 static void dec (volatile jint* dest); | |
| 54 static void dec_ptr(volatile intptr_t* dest); | |
| 55 static void dec_ptr(volatile void* dest); | |
| 56 | |
| 57 // Performs atomic exchange of *dest with exchange_value. Returns old prior value of *dest. | |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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58 static jint xchg(jint exchange_value, volatile jint* dest); |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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59 static unsigned int xchg(unsigned int exchange_value, |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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60 volatile unsigned int* dest); |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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61 |
| 0 | 62 static intptr_t xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest); |
| 63 static void* xchg_ptr(void* exchange_value, volatile void* dest); | |
| 64 | |
| 65 // Performs atomic compare of *dest and compare_value, and exchanges *dest with exchange_value | |
| 66 // if the comparison succeeded. Returns prior value of *dest. Guarantees a two-way memory | |
| 67 // barrier across the cmpxchg. I.e., it's really a 'fence_cmpxchg_acquire'. | |
| 68 static jbyte cmpxchg (jbyte exchange_value, volatile jbyte* dest, jbyte compare_value); | |
| 69 static jint cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value); | |
| 70 static jlong cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value); | |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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71 |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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72 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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73 volatile unsigned int* dest, |
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ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
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diff
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74 unsigned int compare_value); |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
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changeset
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75 |
| 0 | 76 static intptr_t cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value); |
| 77 static void* cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value); | |
| 78 }; |