Mercurial > hg > truffle
comparison src/cpu/sparc/vm/globals_sparc.hpp @ 0:a61af66fc99e jdk7-b24
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| author | duke |
|---|---|
| date | Sat, 01 Dec 2007 00:00:00 +0000 |
| parents | |
| children | f6da6f0174ac |
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| -1:000000000000 | 0:a61af66fc99e |
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| 1 /* | |
| 2 * Copyright 2000-2006 Sun Microsystems, Inc. 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 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 // Sets the default values for platform dependent flags used by the runtime system. | |
| 27 // (see globals.hpp) | |
| 28 // | |
| 29 | |
| 30 // For sparc we do not do call backs when a thread is in the interpreter, because the | |
| 31 // interpreter dispatch needs at least two instructions - first to load the dispatch address | |
| 32 // in a register, and second to jmp. The swapping of the dispatch table may occur _after_ | |
| 33 // the load of the dispatch address and hence the jmp would still go to the location | |
| 34 // according to the prior table. So, we let the thread continue and let it block by itself. | |
| 35 define_pd_global(bool, DontYieldALot, true); // yield no more than 100 times per second | |
| 36 define_pd_global(bool, ConvertSleepToYield, false); // do not convert sleep(0) to yield. Helps GUI | |
| 37 define_pd_global(bool, ShareVtableStubs, false); // improves performance markedly for mtrt and compress | |
| 38 define_pd_global(bool, CountInterpCalls, false); // not implemented in the interpreter | |
| 39 define_pd_global(bool, NeedsDeoptSuspend, true); // register window machines need this | |
| 40 | |
| 41 define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks | |
| 42 define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast | |
| 43 | |
| 44 define_pd_global(intx, CodeEntryAlignment, 32); | |
| 45 define_pd_global(uintx, TLABSize, 0); | |
| 46 define_pd_global(uintx, NewSize, ScaleForWordSize((2048 * K) + (2 * (64 * K)))); | |
| 47 define_pd_global(intx, SurvivorRatio, 8); | |
| 48 define_pd_global(intx, InlineFrequencyCount, 50); // we can use more inlining on the SPARC | |
| 49 #ifdef _LP64 | |
| 50 // Stack slots are 2X larger in LP64 than in the 32 bit VM. | |
| 51 define_pd_global(intx, ThreadStackSize, 1024); | |
| 52 define_pd_global(intx, VMThreadStackSize, 1024); | |
| 53 #else | |
| 54 define_pd_global(intx, ThreadStackSize, 512); | |
| 55 define_pd_global(intx, VMThreadStackSize, 512); | |
| 56 #endif | |
| 57 | |
| 58 define_pd_global(intx, StackYellowPages, 2); | |
| 59 define_pd_global(intx, StackRedPages, 1); | |
| 60 define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1)); | |
| 61 | |
| 62 define_pd_global(intx, PreInflateSpin, 40); // Determined by running design center | |
| 63 | |
| 64 define_pd_global(bool, RewriteBytecodes, true); | |
| 65 define_pd_global(bool, RewriteFrequentPairs, true); |