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src/cpu/sparc/vm/globals_sparc.hpp@a61af66fc99e (annotated)
src/cpu/sparc/vm/globals_sparc.hpp
Sat, 01 Dec 2007 00:00:00 +0000
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- duke
- date
- Sat, 01 Dec 2007 00:00:00 +0000
- changeset 435
- a61af66fc99e
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| duke@435 | 1 | /* |
| duke@435 | 2 | * Copyright 2000-2006 Sun Microsystems, Inc. All Rights Reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| duke@435 | 21 | * have any questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| duke@435 | 25 | // |
| duke@435 | 26 | // Sets the default values for platform dependent flags used by the runtime system. |
| duke@435 | 27 | // (see globals.hpp) |
| duke@435 | 28 | // |
| duke@435 | 29 | |
| duke@435 | 30 | // For sparc we do not do call backs when a thread is in the interpreter, because the |
| duke@435 | 31 | // interpreter dispatch needs at least two instructions - first to load the dispatch address |
| duke@435 | 32 | // in a register, and second to jmp. The swapping of the dispatch table may occur _after_ |
| duke@435 | 33 | // the load of the dispatch address and hence the jmp would still go to the location |
| duke@435 | 34 | // according to the prior table. So, we let the thread continue and let it block by itself. |
| duke@435 | 35 | define_pd_global(bool, DontYieldALot, true); // yield no more than 100 times per second |
| duke@435 | 36 | define_pd_global(bool, ConvertSleepToYield, false); // do not convert sleep(0) to yield. Helps GUI |
| duke@435 | 37 | define_pd_global(bool, ShareVtableStubs, false); // improves performance markedly for mtrt and compress |
| duke@435 | 38 | define_pd_global(bool, CountInterpCalls, false); // not implemented in the interpreter |
| duke@435 | 39 | define_pd_global(bool, NeedsDeoptSuspend, true); // register window machines need this |
| duke@435 | 40 | |
| duke@435 | 41 | define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks |
| duke@435 | 42 | define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast |
| duke@435 | 43 | |
| duke@435 | 44 | define_pd_global(intx, CodeEntryAlignment, 32); |
| duke@435 | 45 | define_pd_global(uintx, TLABSize, 0); |
| duke@435 | 46 | define_pd_global(uintx, NewSize, ScaleForWordSize((2048 * K) + (2 * (64 * K)))); |
| duke@435 | 47 | define_pd_global(intx, SurvivorRatio, 8); |
| duke@435 | 48 | define_pd_global(intx, InlineFrequencyCount, 50); // we can use more inlining on the SPARC |
| duke@435 | 49 | #ifdef _LP64 |
| duke@435 | 50 | // Stack slots are 2X larger in LP64 than in the 32 bit VM. |
| duke@435 | 51 | define_pd_global(intx, ThreadStackSize, 1024); |
| duke@435 | 52 | define_pd_global(intx, VMThreadStackSize, 1024); |
| duke@435 | 53 | #else |
| duke@435 | 54 | define_pd_global(intx, ThreadStackSize, 512); |
| duke@435 | 55 | define_pd_global(intx, VMThreadStackSize, 512); |
| duke@435 | 56 | #endif |
| duke@435 | 57 | |
| duke@435 | 58 | define_pd_global(intx, StackYellowPages, 2); |
| duke@435 | 59 | define_pd_global(intx, StackRedPages, 1); |
| duke@435 | 60 | define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1)); |
| duke@435 | 61 | |
| duke@435 | 62 | define_pd_global(intx, PreInflateSpin, 40); // Determined by running design center |
| duke@435 | 63 | |
| duke@435 | 64 | define_pd_global(bool, RewriteBytecodes, true); |
| duke@435 | 65 | define_pd_global(bool, RewriteFrequentPairs, true); |
