Mercurial > hg > truffle
annotate src/share/vm/ci/ciMethodBlocks.hpp @ 1145:e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
Summary: Autonomic per-worker free block cache sizing, tunable coalition policies, fixes to per-size block statistics, retuned gain and bandwidth of some feedback loop filters to allow quicker reactivity to abrupt changes in ambient demand, and other heuristics to reduce fragmentation of the CMS old gen. Also tightened some assertions, including those related to locking.
Reviewed-by: jmasa
| author | ysr |
|---|---|
| date | Wed, 23 Dec 2009 09:23:54 -0800 |
| parents | 194b8e3a2fc4 |
| children | c18cbe5936b8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 2006-2008 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 | |
| 26 class ciBlock; | |
| 27 | |
| 28 typedef short ciBlockIndex; | |
| 29 | |
| 30 class ciMethodBlocks : public ResourceObj { | |
| 31 private: | |
| 32 ciMethod *_method; | |
| 33 Arena *_arena; | |
| 34 GrowableArray<ciBlock *> *_blocks; | |
| 35 ciBlock **_bci_to_block; | |
| 36 int _num_blocks; | |
| 37 int _code_size; | |
| 38 | |
| 39 void do_analysis(); | |
| 40 public: | |
| 41 ciMethodBlocks(Arena *arena, ciMethod *meth); | |
| 42 | |
| 43 ciBlock *block_containing(int bci); | |
| 44 ciBlock *block(int index) { return _blocks->at(index); } | |
| 45 ciBlock *make_block_at(int bci); | |
| 46 ciBlock *split_block_at(int bci); | |
| 47 bool is_block_start(int bci); | |
| 48 int num_blocks() { return _num_blocks;} | |
| 49 void clear_processed(); | |
| 50 | |
|
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194b8e3a2fc4
6384206: Phis which are later unneeded are impairing our ability to inline based on static types
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51 ciBlock *make_dummy_block(); // a block not associated with a bci |
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194b8e3a2fc4
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52 |
| 0 | 53 #ifndef PRODUCT |
| 54 void dump(); | |
| 55 #endif | |
| 56 }; | |
| 57 | |
| 58 class ciBlock : public ResourceObj { | |
| 59 private: | |
| 60 int _idx; | |
| 61 int _start_bci; | |
| 62 int _limit_bci; | |
| 63 int _control_bci; | |
| 64 uint _flags; | |
| 65 int _ex_start_bci; | |
| 66 int _ex_limit_bci; | |
| 67 #ifndef PRODUCT | |
| 68 ciMethod *_method; | |
| 69 #endif | |
| 70 enum { | |
| 71 Processed = (1 << 0), | |
| 72 Handler = (1 << 1), | |
| 73 MayThrow = (1 << 2), | |
| 74 DoesJsr = (1 << 3), | |
| 75 DoesRet = (1 << 4), | |
| 76 RetTarget = (1 << 5), | |
| 77 HasHandler = (1 << 6) | |
| 78 }; | |
| 79 | |
| 80 | |
| 81 public: | |
| 82 enum { | |
| 83 fall_through_bci = -1 | |
| 84 }; | |
| 85 | |
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367
194b8e3a2fc4
6384206: Phis which are later unneeded are impairing our ability to inline based on static types
never
parents:
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changeset
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86 ciBlock(ciMethod *method, int index, int start_bci); |
| 0 | 87 int start_bci() const { return _start_bci; } |
| 88 int limit_bci() const { return _limit_bci; } | |
| 89 int control_bci() const { return _control_bci; } | |
| 90 int index() const { return _idx; } | |
| 91 void set_start_bci(int bci) { _start_bci = bci; } | |
| 92 void set_limit_bci(int bci) { _limit_bci = bci; } | |
| 93 void set_control_bci(int bci) { _control_bci = bci;} | |
| 94 void set_exception_range(int start_bci, int limit_bci); | |
| 95 int ex_start_bci() const { return _ex_start_bci; } | |
| 96 int ex_limit_bci() const { return _ex_limit_bci; } | |
| 97 bool contains(int bci) const { return start_bci() <= bci && bci < limit_bci(); } | |
| 98 | |
| 99 // flag handling | |
| 100 bool processed() const { return (_flags & Processed) != 0; } | |
| 101 bool is_handler() const { return (_flags & Handler) != 0; } | |
| 102 bool may_throw() const { return (_flags & MayThrow) != 0; } | |
| 103 bool does_jsr() const { return (_flags & DoesJsr) != 0; } | |
| 104 bool does_ret() const { return (_flags & DoesRet) != 0; } | |
| 105 bool has_handler() const { return (_flags & HasHandler) != 0; } | |
| 106 bool is_ret_target() const { return (_flags & RetTarget) != 0; } | |
| 107 void set_processed() { _flags |= Processed; } | |
| 108 void clear_processed() { _flags &= ~Processed; } | |
| 109 void set_handler() { _flags |= Handler; } | |
| 110 void set_may_throw() { _flags |= MayThrow; } | |
| 111 void set_does_jsr() { _flags |= DoesJsr; } | |
| 112 void clear_does_jsr() { _flags &= ~DoesJsr; } | |
| 113 void set_does_ret() { _flags |= DoesRet; } | |
|
26
0871d5cd64cd
6621084: ciMethodBlocks::split_block_at() is broken for methods with exception handler
kvn
parents:
0
diff
changeset
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114 void clear_does_ret() { _flags &= ~DoesRet; } |
| 0 | 115 void set_is_ret_target() { _flags |= RetTarget; } |
| 116 void set_has_handler() { _flags |= HasHandler; } | |
|
26
0871d5cd64cd
6621084: ciMethodBlocks::split_block_at() is broken for methods with exception handler
kvn
parents:
0
diff
changeset
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117 void clear_exception_handler() { _flags &= ~Handler; _ex_start_bci = -1; _ex_limit_bci = -1; } |
| 0 | 118 #ifndef PRODUCT |
| 119 ciMethod *method() const { return _method; } | |
| 120 void dump(); | |
| 121 void print_on(outputStream* st) const PRODUCT_RETURN; | |
| 122 #endif | |
| 123 }; |