truffle: src/share/vm/gc_implementation/g1/g1BiasedArray.hpp annotate

annotate src/share/vm/gc_implementation/g1/g1BiasedArray.hpp @ 17937:78bbf4d43a14

8037816: Fix for 8036122 breaks build with Xcode5/clang 8043029: Change 8037816 breaks HS build with older GCC versions which don't support diagnostic pragmas 8043164: Format warning in traceStream.hpp Summary: Backport of main fix + two corrections, enables clang compilation, turns on format attributes, corrects/mutes warnings Reviewed-by: kvn, coleenp, iveresov, twisti

author	drchase
date	Thu, 22 May 2014 15:52:41 -0400
parents	5479cb006184
children	52b4284cb496

rev	line source
12305 a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	1 /*
17937 78bbf4d43a14 8037816: Fix for 8036122 breaks build with Xcode5/clang drchase parents: 17760 diff changeset	2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
12305 a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	4 *
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	7 * published by the Free Software Foundation.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	8 *
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	13 * accompanied this code).
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	14 *
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	18 *
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	20 * or visit www.oracle.com if you need additional information or have any
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	21 * questions.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	22 *
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	23 */
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	24
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1BIASEDARRAY_HPP
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1BIASEDARRAY_HPP
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	27
17760 5479cb006184 8036860: Pad and cache-align the BiasedMappedArray tschatzl parents: 12305 diff changeset	28 #include "memory/allocation.hpp"
12305 a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	29 #include "utilities/debug.hpp"
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	30
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	31 // Implements the common base functionality for arrays that contain provisions
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	32 // for accessing its elements using a biased index.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	33 // The element type is defined by the instantiating the template.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	34 class G1BiasedMappedArrayBase VALUE_OBJ_CLASS_SPEC {
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	35 friend class VMStructs;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	36 public:
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	37 typedef size_t idx_t;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	38 protected:
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	39 address _base; // the real base address
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	40 size_t _length; // the length of the array
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	41 address _biased_base; // base address biased by "bias" elements
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	42 size_t _bias; // the bias, i.e. the offset biased_base is located to the right in elements
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	43 uint _shift_by; // the amount of bits to shift right when mapping to an index of the array.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	44
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	45 protected:
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	46
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	47 G1BiasedMappedArrayBase() : _base(NULL), _length(0), _biased_base(NULL),
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	48 _bias(0), _shift_by(0) { }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	49
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	50 // Allocate a new array, generic version.
17760 5479cb006184 8036860: Pad and cache-align the BiasedMappedArray tschatzl parents: 12305 diff changeset	51 static address create_new_base_array(size_t length, size_t elem_size);
12305 a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	52
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	53 // Initialize the members of this class. The biased start address of this array
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	54 // is the bias (in elements) multiplied by the element size.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	55 void initialize_base(address base, size_t length, size_t bias, size_t elem_size, uint shift_by) {
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	56 assert(base != NULL, "just checking");
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	57 assert(length > 0, "just checking");
17937 78bbf4d43a14 8037816: Fix for 8036122 breaks build with Xcode5/clang drchase parents: 17760 diff changeset	58 assert(shift_by < sizeof(uintptr_t) * 8, err_msg("Shifting by " SSIZE_FORMAT ", larger than word size?", (size_t) shift_by));
12305 a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	59 _base = base;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	60 _length = length;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	61 _biased_base = base - (bias * elem_size);
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	62 _bias = bias;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	63 _shift_by = shift_by;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	64 }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	65
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	66 // Allocate and initialize this array to cover the heap addresses in the range
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	67 // of [bottom, end).
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	68 void initialize(HeapWord* bottom, HeapWord* end, size_t target_elem_size_in_bytes, size_t mapping_granularity_in_bytes) {
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	69 assert(mapping_granularity_in_bytes > 0, "just checking");
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	70 assert(is_power_of_2(mapping_granularity_in_bytes),
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	71 err_msg("mapping granularity must be power of 2, is %zd", mapping_granularity_in_bytes));
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	72 assert((uintptr_t)bottom % mapping_granularity_in_bytes == 0,
17937 78bbf4d43a14 8037816: Fix for 8036122 breaks build with Xcode5/clang drchase parents: 17760 diff changeset	73 err_msg("bottom mapping area address must be a multiple of mapping granularity %zd, is " PTR_FORMAT,
78bbf4d43a14 8037816: Fix for 8036122 breaks build with Xcode5/clang drchase parents: 17760 diff changeset	74 mapping_granularity_in_bytes, p2i(bottom)));
12305 a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	75 assert((uintptr_t)end % mapping_granularity_in_bytes == 0,
17937 78bbf4d43a14 8037816: Fix for 8036122 breaks build with Xcode5/clang drchase parents: 17760 diff changeset	76 err_msg("end mapping area address must be a multiple of mapping granularity %zd, is " PTR_FORMAT,
78bbf4d43a14 8037816: Fix for 8036122 breaks build with Xcode5/clang drchase parents: 17760 diff changeset	77 mapping_granularity_in_bytes, p2i(end)));
12305 a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	78 size_t num_target_elems = (end - bottom) / (mapping_granularity_in_bytes / HeapWordSize);
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	79 idx_t bias = (uintptr_t)bottom / mapping_granularity_in_bytes;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	80 address base = create_new_base_array(num_target_elems, target_elem_size_in_bytes);
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	81 initialize_base(base, num_target_elems, bias, target_elem_size_in_bytes, log2_intptr(mapping_granularity_in_bytes));
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	82 }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	83
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	84 size_t bias() const { return _bias; }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	85 uint shift_by() const { return _shift_by; }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	86
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	87 void verify_index(idx_t index) const PRODUCT_RETURN;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	88 void verify_biased_index(idx_t biased_index) const PRODUCT_RETURN;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	89 void verify_biased_index_inclusive_end(idx_t biased_index) const PRODUCT_RETURN;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	90
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	91 public:
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	92 // Return the length of the array in elements.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	93 size_t length() const { return _length; }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	94 };
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	95
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	96 // Array that provides biased access and mapping from (valid) addresses in the
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	97 // heap into this array.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	98 template<class T>
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	99 class G1BiasedMappedArray : public G1BiasedMappedArrayBase {
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	100 public:
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	101 typedef G1BiasedMappedArrayBase::idx_t idx_t;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	102
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	103 T* base() const { return (T*)G1BiasedMappedArrayBase::_base; }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	104 // Return the element of the given array at the given index. Assume
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	105 // the index is valid. This is a convenience method that does sanity
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	106 // checking on the index.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	107 T get_by_index(idx_t index) const {
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	108 verify_index(index);
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	109 return this->base()[index];
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	110 }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	111
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	112 // Set the element of the given array at the given index to the
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	113 // given value. Assume the index is valid. This is a convenience
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	114 // method that does sanity checking on the index.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	115 void set_by_index(idx_t index, T value) {
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	116 verify_index(index);
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	117 this->base()[index] = value;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	118 }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	119
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	120 // The raw biased base pointer.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	121 T* biased_base() const { return (T*)G1BiasedMappedArrayBase::_biased_base; }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	122
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	123 // Return the element of the given array that covers the given word in the
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	124 // heap. Assumes the index is valid.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	125 T get_by_address(HeapWord* value) const {
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	126 idx_t biased_index = ((uintptr_t)value) >> this->shift_by();
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	127 this->verify_biased_index(biased_index);
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	128 return biased_base()[biased_index];
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	129 }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	130
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	131 // Set the value of the array entry that corresponds to the given array.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	132 void set_by_address(HeapWord * address, T value) {
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	133 idx_t biased_index = ((uintptr_t)address) >> this->shift_by();
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	134 this->verify_biased_index(biased_index);
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	135 biased_base()[biased_index] = value;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	136 }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	137
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	138 protected:
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	139 // Returns the address of the element the given address maps to
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	140 T* address_mapped_to(HeapWord* address) {
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	141 idx_t biased_index = ((uintptr_t)address) >> this->shift_by();
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	142 this->verify_biased_index_inclusive_end(biased_index);
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	143 return biased_base() + biased_index;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	144 }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	145
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	146 public:
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	147 // Return the smallest address (inclusive) in the heap that this array covers.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	148 HeapWord* bottom_address_mapped() const {
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	149 return (HeapWord*) ((uintptr_t)this->bias() << this->shift_by());
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	150 }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	151
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	152 // Return the highest address (exclusive) in the heap that this array covers.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	153 HeapWord* end_address_mapped() const {
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	154 return (HeapWord*) ((uintptr_t)(this->bias() + this->length()) << this->shift_by());
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	155 }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	156
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	157 protected:
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	158 virtual T default_value() const = 0;
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	159 // Set all elements of the given array to the given value.
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	160 void clear() {
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	161 T value = default_value();
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	162 for (idx_t i = 0; i < length(); i++) {
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	163 set_by_index(i, value);
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	164 }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	165 }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	166 public:
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	167 G1BiasedMappedArray() {}
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	168
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	169 // Allocate and initialize this array to cover the heap addresses in the range
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	170 // of [bottom, end).
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	171 void initialize(HeapWord* bottom, HeapWord* end, size_t mapping_granularity) {
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	172 G1BiasedMappedArrayBase::initialize(bottom, end, sizeof(T), mapping_granularity);
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	173 this->clear();
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	174 }
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	175 };
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	176
a19bea467577 7163191: G1: introduce a "heap spanning table" abstraction tschatzl parents: diff changeset	177 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1BIASEDARRAY_HPP

Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/g1/g1BiasedArray.hpp @ 17937:78bbf4d43a14