Mercurial > hg > truffle
annotate src/share/vm/runtime/stackValueCollection.cpp @ 12144:d8e99408faad
8009062: poor performance of JNI AttachCurrentThread after fix for 7017193
Summary: don't re-evaluate stack bounds for main thread before install guard page
Reviewed-by: coleenp, dholmes, dlong
| author | dsamersoff |
|---|---|
| date | Thu, 29 Aug 2013 21:48:23 +0400 |
| parents | 1d1603768966 |
| children | 78bbf4d43a14 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
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2 * Copyright (c) 2001, 2011, Oracle and/or its affiliates. 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "runtime/stackValueCollection.hpp" | |
| 27 #ifdef TARGET_ARCH_x86 | |
| 28 # include "jniTypes_x86.hpp" | |
| 29 #endif | |
| 30 #ifdef TARGET_ARCH_sparc | |
| 31 # include "jniTypes_sparc.hpp" | |
| 32 #endif | |
| 33 #ifdef TARGET_ARCH_zero | |
| 34 # include "jniTypes_zero.hpp" | |
| 35 #endif | |
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36 #ifdef TARGET_ARCH_arm |
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37 # include "jniTypes_arm.hpp" |
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38 #endif |
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39 #ifdef TARGET_ARCH_ppc |
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40 # include "jniTypes_ppc.hpp" |
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41 #endif |
| 0 | 42 |
| 43 jint StackValueCollection::int_at(int slot) const { | |
| 44 intptr_t val = at(slot)->get_int(); | |
| 45 jint ival = *((jint*) (&val)); | |
| 46 return ival; | |
| 47 } | |
| 48 | |
| 49 jlong StackValueCollection::long_at(int slot) const { | |
| 50 #ifdef _LP64 | |
| 51 return at(slot+1)->get_int(); | |
| 52 #else | |
| 53 union { | |
| 54 jlong jl; | |
| 55 jint array[2]; | |
| 56 } value; | |
| 57 // Interpreter stack is reversed in memory: | |
| 58 // low memory location is in higher java local slot. | |
| 59 value.array[0] = at(slot+1)->get_int(); | |
| 60 value.array[1] = at(slot )->get_int(); | |
| 61 return value.jl; | |
| 62 #endif | |
| 63 } | |
| 64 | |
| 65 Handle StackValueCollection::obj_at(int slot) const { | |
| 66 return at(slot)->get_obj(); | |
| 67 } | |
| 68 | |
| 69 jfloat StackValueCollection::float_at(int slot) const { | |
| 70 intptr_t res = at(slot)->get_int(); | |
| 71 return *((jfloat*) (&res)); | |
| 72 } | |
| 73 | |
| 74 jdouble StackValueCollection::double_at(int slot) const { | |
| 75 #ifdef _LP64 | |
| 76 intptr_t res = at(slot+1)->get_int(); | |
| 77 return *((jdouble*) (&res)); | |
| 78 #else | |
| 79 union { | |
| 80 jdouble jd; | |
| 81 jint array[2]; | |
| 82 } value; | |
| 83 // Interpreter stack is reversed in memory: | |
| 84 // low memory location is in higher java local slot. | |
| 85 value.array[0] = at(slot+1)->get_int(); | |
| 86 value.array[1] = at(slot )->get_int(); | |
| 87 return value.jd; | |
| 88 #endif | |
| 89 } | |
| 90 | |
| 91 void StackValueCollection::set_int_at(int slot, jint value) { | |
| 92 intptr_t val; | |
| 93 *((jint*) (&val)) = value; | |
| 94 at(slot)->set_int(val); | |
| 95 } | |
| 96 | |
| 97 void StackValueCollection::set_long_at(int slot, jlong value) { | |
| 98 #ifdef _LP64 | |
| 99 at(slot+1)->set_int(value); | |
| 100 #else | |
| 101 union { | |
| 102 jlong jl; | |
| 103 jint array[2]; | |
| 104 } x; | |
| 105 // Interpreter stack is reversed in memory: | |
| 106 // low memory location is in higher java local slot. | |
| 107 x.jl = value; | |
| 108 at(slot+1)->set_int(x.array[0]); | |
| 109 at(slot+0)->set_int(x.array[1]); | |
| 110 #endif | |
| 111 } | |
| 112 | |
| 113 void StackValueCollection::set_obj_at(int slot, Handle value) { | |
| 114 at(slot)->set_obj(value); | |
| 115 } | |
| 116 | |
| 117 void StackValueCollection::set_float_at(int slot, jfloat value) { | |
| 118 #ifdef _LP64 | |
| 119 union { | |
| 120 intptr_t jd; | |
| 121 jint array[2]; | |
| 122 } val; | |
| 123 // Interpreter stores 32 bit floats in first half of 64 bit word. | |
| 124 val.array[0] = *(jint*)(&value); | |
| 125 val.array[1] = 0; | |
| 126 at(slot)->set_int(val.jd); | |
| 127 #else | |
| 128 at(slot)->set_int(*(jint*)(&value)); | |
| 129 #endif | |
| 130 } | |
| 131 | |
| 132 void StackValueCollection::set_double_at(int slot, jdouble value) { | |
| 133 #ifdef _LP64 | |
| 134 at(slot+1)->set_int(*(intptr_t*)(&value)); | |
| 135 #else | |
| 136 union { | |
| 137 jdouble jd; | |
| 138 jint array[2]; | |
| 139 } x; | |
| 140 // Interpreter stack is reversed in memory: | |
| 141 // low memory location is in higher java local slot. | |
| 142 x.jd = value; | |
| 143 at(slot+1)->set_int(x.array[0]); | |
| 144 at(slot+0)->set_int(x.array[1]); | |
| 145 #endif | |
| 146 } | |
| 147 | |
| 148 #ifndef PRODUCT | |
| 149 void StackValueCollection::print() { | |
| 150 for(int index = 0; index < size(); index++) { | |
| 151 tty->print("\t %2d ", index); | |
| 152 at(index)->print_on(tty); | |
| 153 if( at(index )->type() == T_INT && | |
| 154 index+1 < size() && | |
| 155 at(index+1)->type() == T_INT ) { | |
| 156 tty->print(" " INT64_FORMAT " (long)", long_at(index)); | |
| 157 tty->cr(); | |
| 158 tty->print("\t %.15e (double)", double_at(index)); | |
| 159 tty->print(" " PTR64_FORMAT " (longhex)", long_at(index)); | |
| 160 } | |
| 161 tty->cr(); | |
| 162 } | |
| 163 } | |
| 164 #endif |