Wed, 01 May 2013 08:07:59 -0700
8013418: assert(i == total_args_passed) in AdapterHandlerLibrary::get_adapter since 8-b87
Summary: Do not treat static methods as miranda methods.
Reviewed-by: dholmes, acorn
duke@435 | 1 | /* |
coleenp@4037 | 2 | * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #ifndef SHARE_VM_OOPS_ARRAYOOP_HPP |
stefank@2314 | 26 | #define SHARE_VM_OOPS_ARRAYOOP_HPP |
stefank@2314 | 27 | |
stefank@2314 | 28 | #include "memory/universe.inline.hpp" |
stefank@2314 | 29 | #include "oops/oop.hpp" |
stefank@2314 | 30 | |
coleenp@548 | 31 | // arrayOopDesc is the abstract baseclass for all arrays. It doesn't |
coleenp@548 | 32 | // declare pure virtual to enforce this because that would allocate a vtbl |
coleenp@548 | 33 | // in each instance, which we don't want. |
coleenp@548 | 34 | |
coleenp@548 | 35 | // The layout of array Oops is: |
coleenp@548 | 36 | // |
coleenp@548 | 37 | // markOop |
coleenp@4037 | 38 | // Klass* // 32 bits if compressed but declared 64 in LP64. |
coleenp@548 | 39 | // length // shares klass memory or allocated after declared fields. |
coleenp@548 | 40 | |
duke@435 | 41 | |
duke@435 | 42 | class arrayOopDesc : public oopDesc { |
duke@435 | 43 | friend class VMStructs; |
coleenp@548 | 44 | |
coleenp@548 | 45 | // Interpreter/Compiler offsets |
coleenp@548 | 46 | |
coleenp@548 | 47 | // Header size computation. |
coleenp@548 | 48 | // The header is considered the oop part of this type plus the length. |
coleenp@548 | 49 | // Returns the aligned header_size_in_bytes. This is not equivalent to |
kvn@600 | 50 | // sizeof(arrayOopDesc) which should not appear in the code. |
coleenp@548 | 51 | static int header_size_in_bytes() { |
kvn@600 | 52 | size_t hs = align_size_up(length_offset_in_bytes() + sizeof(int), |
kvn@600 | 53 | HeapWordSize); |
coleenp@548 | 54 | #ifdef ASSERT |
coleenp@548 | 55 | // make sure it isn't called before UseCompressedOops is initialized. |
coleenp@548 | 56 | static size_t arrayoopdesc_hs = 0; |
coleenp@548 | 57 | if (arrayoopdesc_hs == 0) arrayoopdesc_hs = hs; |
coleenp@548 | 58 | assert(arrayoopdesc_hs == hs, "header size can't change"); |
coleenp@548 | 59 | #endif // ASSERT |
coleenp@548 | 60 | return (int)hs; |
coleenp@548 | 61 | } |
duke@435 | 62 | |
duke@435 | 63 | public: |
coleenp@548 | 64 | // The _length field is not declared in C++. It is allocated after the |
coleenp@548 | 65 | // declared nonstatic fields in arrayOopDesc if not compressed, otherwise |
coleenp@548 | 66 | // it occupies the second half of the _klass field in oopDesc. |
coleenp@548 | 67 | static int length_offset_in_bytes() { |
coleenp@4037 | 68 | return UseCompressedKlassPointers ? klass_gap_offset_in_bytes() : |
coleenp@548 | 69 | sizeof(arrayOopDesc); |
coleenp@548 | 70 | } |
coleenp@548 | 71 | |
coleenp@548 | 72 | // Returns the offset of the first element. |
coleenp@548 | 73 | static int base_offset_in_bytes(BasicType type) { |
coleenp@548 | 74 | return header_size(type) * HeapWordSize; |
coleenp@548 | 75 | } |
duke@435 | 76 | |
duke@435 | 77 | // Returns the address of the first element. |
coleenp@548 | 78 | void* base(BasicType type) const { |
coleenp@548 | 79 | return (void*) (((intptr_t) this) + base_offset_in_bytes(type)); |
coleenp@548 | 80 | } |
duke@435 | 81 | |
duke@435 | 82 | // Tells whether index is within bounds. |
duke@435 | 83 | bool is_within_bounds(int index) const { return 0 <= index && index < length(); } |
duke@435 | 84 | |
coleenp@548 | 85 | // Accessors for instance variable which is not a C++ declared nonstatic |
coleenp@548 | 86 | // field. |
coleenp@548 | 87 | int length() const { |
coleenp@548 | 88 | return *(int*)(((intptr_t)this) + length_offset_in_bytes()); |
coleenp@548 | 89 | } |
coleenp@548 | 90 | void set_length(int length) { |
coleenp@548 | 91 | *(int*)(((intptr_t)this) + length_offset_in_bytes()) = length; |
coleenp@548 | 92 | } |
duke@435 | 93 | |
coleenp@548 | 94 | // Should only be called with constants as argument |
coleenp@548 | 95 | // (will not constant fold otherwise) |
coleenp@548 | 96 | // Returns the header size in words aligned to the requirements of the |
coleenp@548 | 97 | // array object type. |
duke@435 | 98 | static int header_size(BasicType type) { |
coleenp@548 | 99 | size_t typesize_in_bytes = header_size_in_bytes(); |
coleenp@548 | 100 | return (int)(Universe::element_type_should_be_aligned(type) |
kvn@1926 | 101 | ? align_object_offset(typesize_in_bytes/HeapWordSize) |
coleenp@548 | 102 | : typesize_in_bytes/HeapWordSize); |
duke@435 | 103 | } |
duke@435 | 104 | |
jcoomes@916 | 105 | // Return the maximum length of an array of BasicType. The length can passed |
jcoomes@916 | 106 | // to typeArrayOop::object_size(scale, length, header_size) without causing an |
brutisso@3266 | 107 | // overflow. We also need to make sure that this will not overflow a size_t on |
brutisso@3266 | 108 | // 32 bit platforms when we convert it to a byte size. |
duke@435 | 109 | static int32_t max_array_length(BasicType type) { |
duke@435 | 110 | assert(type >= 0 && type < T_CONFLICT, "wrong type"); |
kvn@464 | 111 | assert(type2aelembytes(type) != 0, "wrong type"); |
brutisso@3266 | 112 | |
brutisso@3271 | 113 | const size_t max_element_words_per_size_t = |
brutisso@3271 | 114 | align_size_down((SIZE_MAX/HeapWordSize - header_size(type)), MinObjAlignment); |
brutisso@3271 | 115 | const size_t max_elements_per_size_t = |
brutisso@3271 | 116 | HeapWordSize * max_element_words_per_size_t / type2aelembytes(type); |
brutisso@3266 | 117 | if ((size_t)max_jint < max_elements_per_size_t) { |
brutisso@3271 | 118 | // It should be ok to return max_jint here, but parts of the code |
brutisso@3271 | 119 | // (CollectedHeap, Klass::oop_oop_iterate(), and more) uses an int for |
brutisso@3271 | 120 | // passing around the size (in words) of an object. So, we need to avoid |
brutisso@3271 | 121 | // overflowing an int when we add the header. See CRs 4718400 and 7110613. |
brutisso@3271 | 122 | return align_size_down(max_jint - header_size(type), MinObjAlignment); |
jcoomes@916 | 123 | } |
brutisso@3266 | 124 | return (int32_t)max_elements_per_size_t; |
brutisso@3266 | 125 | } |
jcoomes@916 | 126 | |
brutisso@3266 | 127 | // for unit testing |
brutisso@3266 | 128 | #ifndef PRODUCT |
brutisso@3266 | 129 | static bool check_max_length_overflow(BasicType type); |
brutisso@3266 | 130 | static int32_t old_max_array_length(BasicType type); |
stefank@3335 | 131 | static void test_max_array_length(); |
brutisso@3266 | 132 | #endif |
duke@435 | 133 | }; |
stefank@2314 | 134 | |
stefank@2314 | 135 | #endif // SHARE_VM_OOPS_ARRAYOOP_HPP |