Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/fieldType.cpp @ 6972:bd7a7ce2e264
6830717: replay of compilations would help with debugging
Summary: When java process crashed in compiler thread, repeat the compilation process will help finding root cause. This is done with using SA dump application class data and replay data from core dump, then use debug version of jvm to recompile the problematic java method.
Reviewed-by: kvn, twisti, sspitsyn
Contributed-by: yumin.qi@oracle.com
| author | minqi |
|---|---|
| date | Mon, 12 Nov 2012 14:03:53 -0800 |
| parents | 1d1603768966 |
| children |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 1997, 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 "classfile/systemDictionary.hpp" | |
| 27 #include "memory/oopFactory.hpp" | |
| 28 #include "oops/oop.inline.hpp" | |
| 29 #include "oops/typeArrayKlass.hpp" | |
| 30 #include "runtime/fieldType.hpp" | |
| 31 #include "runtime/signature.hpp" | |
| 0 | 32 |
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33 void FieldType::skip_optional_size(Symbol* signature, int* index) { |
| 0 | 34 jchar c = signature->byte_at(*index); |
| 35 while (c >= '0' && c <= '9') { | |
| 36 *index = *index + 1; | |
| 37 c = signature->byte_at(*index); | |
| 38 } | |
| 39 } | |
| 40 | |
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41 BasicType FieldType::basic_type(Symbol* signature) { |
| 0 | 42 return char2type(signature->byte_at(0)); |
| 43 } | |
| 44 | |
| 45 // Check if it is a valid array signature | |
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46 bool FieldType::is_valid_array_signature(Symbol* sig) { |
| 0 | 47 assert(sig->utf8_length() > 1, "this should already have been checked"); |
| 48 assert(sig->byte_at(0) == '[', "this should already have been checked"); | |
| 49 // The first character is already checked | |
| 50 int i = 1; | |
| 51 int len = sig->utf8_length(); | |
| 52 // First skip all '['s | |
| 53 while(i < len - 1 && sig->byte_at(i) == '[') i++; | |
| 54 | |
| 55 // Check type | |
| 56 switch(sig->byte_at(i)) { | |
| 57 case 'B': // T_BYTE | |
| 58 case 'C': // T_CHAR | |
| 59 case 'D': // T_DOUBLE | |
| 60 case 'F': // T_FLOAT | |
| 61 case 'I': // T_INT | |
| 62 case 'J': // T_LONG | |
| 63 case 'S': // T_SHORT | |
| 64 case 'Z': // T_BOOLEAN | |
| 65 // If it is an array, the type is the last character | |
| 66 return (i + 1 == len); | |
| 67 case 'L': | |
| 68 // If it is an object, the last character must be a ';' | |
| 69 return sig->byte_at(len - 1) == ';'; | |
| 70 } | |
| 71 | |
| 72 return false; | |
| 73 } | |
| 74 | |
| 75 | |
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76 BasicType FieldType::get_array_info(Symbol* signature, FieldArrayInfo& fd, TRAPS) { |
| 0 | 77 assert(basic_type(signature) == T_ARRAY, "must be array"); |
| 78 int index = 1; | |
| 79 int dim = 1; | |
| 80 skip_optional_size(signature, &index); | |
| 81 while (signature->byte_at(index) == '[') { | |
| 82 index++; | |
| 83 dim++; | |
| 84 skip_optional_size(signature, &index); | |
| 85 } | |
| 86 ResourceMark rm; | |
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87 char *element = signature->as_C_string() + index; |
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88 BasicType element_type = char2type(element[0]); |
| 0 | 89 if (element_type == T_OBJECT) { |
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90 int len = (int)strlen(element); |
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91 assert(element[len-1] == ';', "last char should be a semicolon"); |
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92 element[len-1] = '\0'; // chop off semicolon |
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93 fd._object_key = SymbolTable::new_symbol(element + 1, CHECK_(T_BYTE)); |
| 0 | 94 } |
| 95 // Pass dimension back to caller | |
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96 fd._dimension = dim; |
| 0 | 97 return element_type; |
| 98 } |