Mercurial > hg > truffle
annotate src/share/vm/opto/c2compiler.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 | d1605aabd0a1 |
| children | c18cbe5936b8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 1999-2008 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 class C2Compiler : public AbstractCompiler { | |
| 26 private: | |
| 27 | |
| 28 static void initialize_runtime(); | |
| 29 | |
| 30 public: | |
| 31 // Name | |
| 32 const char *name() { return "C2"; } | |
| 33 | |
| 34 static volatile int _runtimes; | |
| 35 | |
| 36 #ifdef TIERED | |
| 37 virtual bool is_c2() { return true; }; | |
| 38 #endif // TIERED | |
| 39 | |
| 40 // Customization | |
| 41 bool needs_adapters () { return true; } | |
| 42 bool needs_stubs () { return true; } | |
| 43 | |
| 44 void initialize(); | |
| 45 | |
| 46 // Compilation entry point for methods | |
| 47 void compile_method(ciEnv* env, | |
| 48 ciMethod* target, | |
| 49 int entry_bci); | |
| 50 | |
| 51 // sentinel value used to trigger backtracking in compile_method(). | |
| 52 static const char* retry_no_subsuming_loads(); | |
|
38
b789bcaf2dd9
6667610: (Escape Analysis) retry compilation without EA if it fails
kvn
parents:
0
diff
changeset
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53 static const char* retry_no_escape_analysis(); |
| 0 | 54 |
| 55 // Print compilation timers and statistics | |
| 56 void print_timers(); | |
| 57 }; |