Thu, 15 Aug 2013 20:04:10 -0400
8003424: Enable Class Data Sharing for CompressedOops
8016729: ObjectAlignmentInBytes=16 now forces the use of heap based compressed oops
8005933: The -Xshare:auto option is ignored for -server
Summary: Move klass metaspace above the heap and support CDS with compressed klass ptrs.
Reviewed-by: coleenp, kvn, mgerdin, tschatzl, stefank
1 /*
2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #ifndef CPU_X86_VM_C2_GLOBALS_X86_HPP
26 #define CPU_X86_VM_C2_GLOBALS_X86_HPP
28 #include "utilities/globalDefinitions.hpp"
29 #include "utilities/macros.hpp"
31 // Sets the default values for platform dependent flags used by the server compiler.
32 // (see c2_globals.hpp). Alpha-sorted.
34 define_pd_global(bool, BackgroundCompilation, true);
35 define_pd_global(bool, UseTLAB, true);
36 define_pd_global(bool, ResizeTLAB, true);
37 define_pd_global(bool, CICompileOSR, true);
38 define_pd_global(bool, InlineIntrinsics, true);
39 define_pd_global(bool, PreferInterpreterNativeStubs, false);
40 define_pd_global(bool, ProfileTraps, true);
41 define_pd_global(bool, UseOnStackReplacement, true);
42 #ifdef CC_INTERP
43 define_pd_global(bool, ProfileInterpreter, false);
44 #else
45 define_pd_global(bool, ProfileInterpreter, true);
46 #endif // CC_INTERP
47 define_pd_global(bool, TieredCompilation, trueInTiered);
48 define_pd_global(intx, CompileThreshold, 10000);
49 define_pd_global(intx, BackEdgeThreshold, 100000);
51 define_pd_global(intx, OnStackReplacePercentage, 140);
52 define_pd_global(intx, ConditionalMoveLimit, 3);
53 define_pd_global(intx, FLOATPRESSURE, 6);
54 define_pd_global(intx, FreqInlineSize, 325);
55 #ifdef AMD64
56 define_pd_global(intx, INTPRESSURE, 13);
57 define_pd_global(intx, InteriorEntryAlignment, 16);
58 define_pd_global(intx, NewSizeThreadIncrease, ScaleForWordSize(4*K));
59 define_pd_global(intx, LoopUnrollLimit, 60);
60 // InitialCodeCacheSize derived from specjbb2000 run.
61 define_pd_global(intx, InitialCodeCacheSize, 2496*K); // Integral multiple of CodeCacheExpansionSize
62 define_pd_global(intx, CodeCacheExpansionSize, 64*K);
64 // Ergonomics related flags
65 define_pd_global(uint64_t,MaxRAM, 128ULL*G);
66 #else
67 define_pd_global(intx, INTPRESSURE, 6);
68 define_pd_global(intx, InteriorEntryAlignment, 4);
69 define_pd_global(intx, NewSizeThreadIncrease, 4*K);
70 define_pd_global(intx, LoopUnrollLimit, 50); // Design center runs on 1.3.1
71 // InitialCodeCacheSize derived from specjbb2000 run.
72 define_pd_global(intx, InitialCodeCacheSize, 2304*K); // Integral multiple of CodeCacheExpansionSize
73 define_pd_global(intx, CodeCacheExpansionSize, 32*K);
75 // Ergonomics related flags
76 define_pd_global(uint64_t,MaxRAM, 4ULL*G);
77 #endif // AMD64
78 define_pd_global(intx, RegisterCostAreaRatio, 16000);
80 // Peephole and CISC spilling both break the graph, and so makes the
81 // scheduler sick.
82 define_pd_global(bool, OptoPeephole, true);
83 define_pd_global(bool, UseCISCSpill, true);
84 define_pd_global(bool, OptoScheduling, false);
85 define_pd_global(bool, OptoBundling, false);
87 define_pd_global(intx, ReservedCodeCacheSize, 48*M);
88 define_pd_global(uintx, CodeCacheMinBlockLength, 4);
89 define_pd_global(uintx, CodeCacheMinimumUseSpace, 400*K);
91 // Heap related flags
92 define_pd_global(uintx,MetaspaceSize, ScaleForWordSize(16*M));
94 // Ergonomics related flags
95 define_pd_global(bool, NeverActAsServerClassMachine, false);
97 #endif // CPU_X86_VM_C2_GLOBALS_X86_HPP