Wed, 27 Apr 2016 01:25:04 +0800
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2006, 2010, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | #ifndef SHARE_VM_CI_CIMETHODBLOCKS_HPP |
aoqi@0 | 26 | #define SHARE_VM_CI_CIMETHODBLOCKS_HPP |
aoqi@0 | 27 | |
aoqi@0 | 28 | #include "ci/ciMethod.hpp" |
aoqi@0 | 29 | #include "memory/resourceArea.hpp" |
aoqi@0 | 30 | #include "utilities/growableArray.hpp" |
aoqi@0 | 31 | |
aoqi@0 | 32 | |
aoqi@0 | 33 | class ciBlock; |
aoqi@0 | 34 | |
aoqi@0 | 35 | typedef short ciBlockIndex; |
aoqi@0 | 36 | |
aoqi@0 | 37 | class ciMethodBlocks : public ResourceObj { |
aoqi@0 | 38 | private: |
aoqi@0 | 39 | ciMethod *_method; |
aoqi@0 | 40 | Arena *_arena; |
aoqi@0 | 41 | GrowableArray<ciBlock *> *_blocks; |
aoqi@0 | 42 | ciBlock **_bci_to_block; |
aoqi@0 | 43 | int _num_blocks; |
aoqi@0 | 44 | int _code_size; |
aoqi@0 | 45 | |
aoqi@0 | 46 | void do_analysis(); |
aoqi@0 | 47 | public: |
aoqi@0 | 48 | ciMethodBlocks(Arena *arena, ciMethod *meth); |
aoqi@0 | 49 | |
aoqi@0 | 50 | ciBlock *block_containing(int bci); |
aoqi@0 | 51 | ciBlock *block(int index) { return _blocks->at(index); } |
aoqi@0 | 52 | ciBlock *make_block_at(int bci); |
aoqi@0 | 53 | ciBlock *split_block_at(int bci); |
aoqi@0 | 54 | bool is_block_start(int bci); |
aoqi@0 | 55 | int num_blocks() { return _num_blocks;} |
aoqi@0 | 56 | void clear_processed(); |
aoqi@0 | 57 | |
aoqi@0 | 58 | ciBlock *make_dummy_block(); // a block not associated with a bci |
aoqi@0 | 59 | |
aoqi@0 | 60 | #ifndef PRODUCT |
aoqi@0 | 61 | void dump(); |
aoqi@0 | 62 | #endif |
aoqi@0 | 63 | }; |
aoqi@0 | 64 | |
aoqi@0 | 65 | class ciBlock : public ResourceObj { |
aoqi@0 | 66 | private: |
aoqi@0 | 67 | int _idx; |
aoqi@0 | 68 | int _start_bci; |
aoqi@0 | 69 | int _limit_bci; |
aoqi@0 | 70 | int _control_bci; |
aoqi@0 | 71 | uint _flags; |
aoqi@0 | 72 | int _ex_start_bci; |
aoqi@0 | 73 | int _ex_limit_bci; |
aoqi@0 | 74 | #ifndef PRODUCT |
aoqi@0 | 75 | ciMethod *_method; |
aoqi@0 | 76 | #endif |
aoqi@0 | 77 | enum { |
aoqi@0 | 78 | Processed = (1 << 0), |
aoqi@0 | 79 | Handler = (1 << 1), |
aoqi@0 | 80 | MayThrow = (1 << 2), |
aoqi@0 | 81 | DoesJsr = (1 << 3), |
aoqi@0 | 82 | DoesRet = (1 << 4), |
aoqi@0 | 83 | RetTarget = (1 << 5), |
aoqi@0 | 84 | HasHandler = (1 << 6) |
aoqi@0 | 85 | }; |
aoqi@0 | 86 | |
aoqi@0 | 87 | |
aoqi@0 | 88 | public: |
aoqi@0 | 89 | enum { |
aoqi@0 | 90 | fall_through_bci = -1 |
aoqi@0 | 91 | }; |
aoqi@0 | 92 | |
aoqi@0 | 93 | ciBlock(ciMethod *method, int index, int start_bci); |
aoqi@0 | 94 | int start_bci() const { return _start_bci; } |
aoqi@0 | 95 | int limit_bci() const { return _limit_bci; } |
aoqi@0 | 96 | int control_bci() const { return _control_bci; } |
aoqi@0 | 97 | int index() const { return _idx; } |
aoqi@0 | 98 | void set_start_bci(int bci) { _start_bci = bci; } |
aoqi@0 | 99 | void set_limit_bci(int bci) { _limit_bci = bci; } |
aoqi@0 | 100 | void set_control_bci(int bci) { _control_bci = bci;} |
aoqi@0 | 101 | void set_exception_range(int start_bci, int limit_bci); |
aoqi@0 | 102 | int ex_start_bci() const { return _ex_start_bci; } |
aoqi@0 | 103 | int ex_limit_bci() const { return _ex_limit_bci; } |
aoqi@0 | 104 | bool contains(int bci) const { return start_bci() <= bci && bci < limit_bci(); } |
aoqi@0 | 105 | |
aoqi@0 | 106 | // flag handling |
aoqi@0 | 107 | bool processed() const { return (_flags & Processed) != 0; } |
aoqi@0 | 108 | bool is_handler() const { return (_flags & Handler) != 0; } |
aoqi@0 | 109 | bool may_throw() const { return (_flags & MayThrow) != 0; } |
aoqi@0 | 110 | bool does_jsr() const { return (_flags & DoesJsr) != 0; } |
aoqi@0 | 111 | bool does_ret() const { return (_flags & DoesRet) != 0; } |
aoqi@0 | 112 | bool has_handler() const { return (_flags & HasHandler) != 0; } |
aoqi@0 | 113 | bool is_ret_target() const { return (_flags & RetTarget) != 0; } |
aoqi@0 | 114 | void set_processed() { _flags |= Processed; } |
aoqi@0 | 115 | void clear_processed() { _flags &= ~Processed; } |
aoqi@0 | 116 | void set_handler() { _flags |= Handler; } |
aoqi@0 | 117 | void set_may_throw() { _flags |= MayThrow; } |
aoqi@0 | 118 | void set_does_jsr() { _flags |= DoesJsr; } |
aoqi@0 | 119 | void clear_does_jsr() { _flags &= ~DoesJsr; } |
aoqi@0 | 120 | void set_does_ret() { _flags |= DoesRet; } |
aoqi@0 | 121 | void clear_does_ret() { _flags &= ~DoesRet; } |
aoqi@0 | 122 | void set_is_ret_target() { _flags |= RetTarget; } |
aoqi@0 | 123 | void set_has_handler() { _flags |= HasHandler; } |
aoqi@0 | 124 | void clear_exception_handler() { _flags &= ~Handler; _ex_start_bci = -1; _ex_limit_bci = -1; } |
aoqi@0 | 125 | #ifndef PRODUCT |
aoqi@0 | 126 | ciMethod *method() const { return _method; } |
aoqi@0 | 127 | void dump(); |
aoqi@0 | 128 | void print_on(outputStream* st) const PRODUCT_RETURN; |
aoqi@0 | 129 | #endif |
aoqi@0 | 130 | }; |
aoqi@0 | 131 | |
aoqi@0 | 132 | #endif // SHARE_VM_CI_CIMETHODBLOCKS_HPP |