Mercurial > hg > graal-jvmci-8
view src/cpu/zero/vm/bytecodeInterpreter_zero.inline.hpp @ 3249:e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
Summary: A referent object that is only weakly reachable at the start of concurrent marking but is re-attached to the strongly reachable object graph during marking may not be marked as live. This can cause the reference object to be processed prematurely and leave dangling pointers to the referent object. Implement a read barrier for the java.lang.ref.Reference::referent field by intrinsifying the Reference.get() method, and intercepting accesses though JNI, reflection, and Unsafe, so that when a non-null referent object is read it is also logged in an SATB buffer.
Reviewed-by: kvn, iveresov, never, tonyp, dholmes
author | johnc |
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date | Thu, 07 Apr 2011 09:53:20 -0700 |
parents | f95d63e2154a |
children |
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/* * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright 2007, 2010 Red Hat, Inc. * 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 CPU_ZERO_VM_BYTECODEINTERPRETER_ZERO_INLINE_HPP #define CPU_ZERO_VM_BYTECODEINTERPRETER_ZERO_INLINE_HPP // Inline interpreter functions for zero inline jfloat BytecodeInterpreter::VMfloatAdd(jfloat op1, jfloat op2) { return op1 + op2; } inline jfloat BytecodeInterpreter::VMfloatSub(jfloat op1, jfloat op2) { return op1 - op2; } inline jfloat BytecodeInterpreter::VMfloatMul(jfloat op1, jfloat op2) { return op1 * op2; } inline jfloat BytecodeInterpreter::VMfloatDiv(jfloat op1, jfloat op2) { return op1 / op2; } inline jfloat BytecodeInterpreter::VMfloatRem(jfloat op1, jfloat op2) { return fmod(op1, op2); } inline jfloat BytecodeInterpreter::VMfloatNeg(jfloat op) { return -op; } inline int32_t BytecodeInterpreter::VMfloatCompare(jfloat op1, jfloat op2, int32_t direction) { return ( op1 < op2 ? -1 : op1 > op2 ? 1 : op1 == op2 ? 0 : (direction == -1 || direction == 1) ? direction : 0); } inline void BytecodeInterpreter::VMmemCopy64(uint32_t to[2], const uint32_t from[2]) { *(uint64_t *) to = *(uint64_t *) from; } inline jlong BytecodeInterpreter::VMlongAdd(jlong op1, jlong op2) { return op1 + op2; } inline jlong BytecodeInterpreter::VMlongAnd(jlong op1, jlong op2) { return op1 & op2; } inline jlong BytecodeInterpreter::VMlongDiv(jlong op1, jlong op2) { /* it's possible we could catch this special case implicitly */ if (op1 == (jlong) 0x8000000000000000LL && op2 == -1) return op1; else return op1 / op2; } inline jlong BytecodeInterpreter::VMlongMul(jlong op1, jlong op2) { return op1 * op2; } inline jlong BytecodeInterpreter::VMlongOr(jlong op1, jlong op2) { return op1 | op2; } inline jlong BytecodeInterpreter::VMlongSub(jlong op1, jlong op2) { return op1 - op2; } inline jlong BytecodeInterpreter::VMlongXor(jlong op1, jlong op2) { return op1 ^ op2; } inline jlong BytecodeInterpreter::VMlongRem(jlong op1, jlong op2) { /* it's possible we could catch this special case implicitly */ if (op1 == (jlong) 0x8000000000000000LL && op2 == -1) return 0; else return op1 % op2; } inline jlong BytecodeInterpreter::VMlongUshr(jlong op1, jint op2) { return ((unsigned long long) op1) >> (op2 & 0x3F); } inline jlong BytecodeInterpreter::VMlongShr(jlong op1, jint op2) { return op1 >> (op2 & 0x3F); } inline jlong BytecodeInterpreter::VMlongShl(jlong op1, jint op2) { return op1 << (op2 & 0x3F); } inline jlong BytecodeInterpreter::VMlongNeg(jlong op) { return -op; } inline jlong BytecodeInterpreter::VMlongNot(jlong op) { return ~op; } inline int32_t BytecodeInterpreter::VMlongLtz(jlong op) { return (op <= 0); } inline int32_t BytecodeInterpreter::VMlongGez(jlong op) { return (op >= 0); } inline int32_t BytecodeInterpreter::VMlongEqz(jlong op) { return (op == 0); } inline int32_t BytecodeInterpreter::VMlongEq(jlong op1, jlong op2) { return (op1 == op2); } inline int32_t BytecodeInterpreter::VMlongNe(jlong op1, jlong op2) { return (op1 != op2); } inline int32_t BytecodeInterpreter::VMlongGe(jlong op1, jlong op2) { return (op1 >= op2); } inline int32_t BytecodeInterpreter::VMlongLe(jlong op1, jlong op2) { return (op1 <= op2); } inline int32_t BytecodeInterpreter::VMlongLt(jlong op1, jlong op2) { return (op1 < op2); } inline int32_t BytecodeInterpreter::VMlongGt(jlong op1, jlong op2) { return (op1 > op2); } inline int32_t BytecodeInterpreter::VMlongCompare(jlong op1, jlong op2) { return (VMlongLt(op1, op2) ? -1 : VMlongGt(op1, op2) ? 1 : 0); } // Long conversions inline jdouble BytecodeInterpreter::VMlong2Double(jlong val) { return (jdouble) val; } inline jfloat BytecodeInterpreter::VMlong2Float(jlong val) { return (jfloat) val; } inline jint BytecodeInterpreter::VMlong2Int(jlong val) { return (jint) val; } // Double Arithmetic inline jdouble BytecodeInterpreter::VMdoubleAdd(jdouble op1, jdouble op2) { return op1 + op2; } inline jdouble BytecodeInterpreter::VMdoubleDiv(jdouble op1, jdouble op2) { // Divide by zero... QQQ return op1 / op2; } inline jdouble BytecodeInterpreter::VMdoubleMul(jdouble op1, jdouble op2) { return op1 * op2; } inline jdouble BytecodeInterpreter::VMdoubleNeg(jdouble op) { return -op; } inline jdouble BytecodeInterpreter::VMdoubleRem(jdouble op1, jdouble op2) { return fmod(op1, op2); } inline jdouble BytecodeInterpreter::VMdoubleSub(jdouble op1, jdouble op2) { return op1 - op2; } inline int32_t BytecodeInterpreter::VMdoubleCompare(jdouble op1, jdouble op2, int32_t direction) { return ( op1 < op2 ? -1 : op1 > op2 ? 1 : op1 == op2 ? 0 : (direction == -1 || direction == 1) ? direction : 0); } // Double Conversions inline jfloat BytecodeInterpreter::VMdouble2Float(jdouble val) { return (jfloat) val; } // Float Conversions inline jdouble BytecodeInterpreter::VMfloat2Double(jfloat op) { return (jdouble) op; } // Integer Arithmetic inline jint BytecodeInterpreter::VMintAdd(jint op1, jint op2) { return op1 + op2; } inline jint BytecodeInterpreter::VMintAnd(jint op1, jint op2) { return op1 & op2; } inline jint BytecodeInterpreter::VMintDiv(jint op1, jint op2) { /* it's possible we could catch this special case implicitly */ if (op1 == (jint) 0x80000000 && op2 == -1) return op1; else return op1 / op2; } inline jint BytecodeInterpreter::VMintMul(jint op1, jint op2) { return op1 * op2; } inline jint BytecodeInterpreter::VMintNeg(jint op) { return -op; } inline jint BytecodeInterpreter::VMintOr(jint op1, jint op2) { return op1 | op2; } inline jint BytecodeInterpreter::VMintRem(jint op1, jint op2) { /* it's possible we could catch this special case implicitly */ if (op1 == (jint) 0x80000000 && op2 == -1) return 0; else return op1 % op2; } inline jint BytecodeInterpreter::VMintShl(jint op1, jint op2) { return op1 << (op2 & 0x1F); } inline jint BytecodeInterpreter::VMintShr(jint op1, jint op2) { return op1 >> (op2 & 0x1F); } inline jint BytecodeInterpreter::VMintSub(jint op1, jint op2) { return op1 - op2; } inline juint BytecodeInterpreter::VMintUshr(jint op1, jint op2) { return ((juint) op1) >> (op2 & 0x1F); } inline jint BytecodeInterpreter::VMintXor(jint op1, jint op2) { return op1 ^ op2; } inline jdouble BytecodeInterpreter::VMint2Double(jint val) { return (jdouble) val; } inline jfloat BytecodeInterpreter::VMint2Float(jint val) { return (jfloat) val; } inline jlong BytecodeInterpreter::VMint2Long(jint val) { return (jlong) val; } inline jchar BytecodeInterpreter::VMint2Char(jint val) { return (jchar) val; } inline jshort BytecodeInterpreter::VMint2Short(jint val) { return (jshort) val; } inline jbyte BytecodeInterpreter::VMint2Byte(jint val) { return (jbyte) val; } #endif // CPU_ZERO_VM_BYTECODEINTERPRETER_ZERO_INLINE_HPP