1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/cpu/sparc/vm/globals_sparc.hpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,65 @@
1.4 +/*
1.5 + * Copyright 2000-2006 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +//
1.29 +// Sets the default values for platform dependent flags used by the runtime system.
1.30 +// (see globals.hpp)
1.31 +//
1.32 +
1.33 +// For sparc we do not do call backs when a thread is in the interpreter, because the
1.34 +// interpreter dispatch needs at least two instructions - first to load the dispatch address
1.35 +// in a register, and second to jmp. The swapping of the dispatch table may occur _after_
1.36 +// the load of the dispatch address and hence the jmp would still go to the location
1.37 +// according to the prior table. So, we let the thread continue and let it block by itself.
1.38 +define_pd_global(bool, DontYieldALot, true); // yield no more than 100 times per second
1.39 +define_pd_global(bool, ConvertSleepToYield, false); // do not convert sleep(0) to yield. Helps GUI
1.40 +define_pd_global(bool, ShareVtableStubs, false); // improves performance markedly for mtrt and compress
1.41 +define_pd_global(bool, CountInterpCalls, false); // not implemented in the interpreter
1.42 +define_pd_global(bool, NeedsDeoptSuspend, true); // register window machines need this
1.43 +
1.44 +define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks
1.45 +define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast
1.46 +
1.47 +define_pd_global(intx, CodeEntryAlignment, 32);
1.48 +define_pd_global(uintx, TLABSize, 0);
1.49 +define_pd_global(uintx, NewSize, ScaleForWordSize((2048 * K) + (2 * (64 * K))));
1.50 +define_pd_global(intx, SurvivorRatio, 8);
1.51 +define_pd_global(intx, InlineFrequencyCount, 50); // we can use more inlining on the SPARC
1.52 +#ifdef _LP64
1.53 +// Stack slots are 2X larger in LP64 than in the 32 bit VM.
1.54 +define_pd_global(intx, ThreadStackSize, 1024);
1.55 +define_pd_global(intx, VMThreadStackSize, 1024);
1.56 +#else
1.57 +define_pd_global(intx, ThreadStackSize, 512);
1.58 +define_pd_global(intx, VMThreadStackSize, 512);
1.59 +#endif
1.60 +
1.61 +define_pd_global(intx, StackYellowPages, 2);
1.62 +define_pd_global(intx, StackRedPages, 1);
1.63 +define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1));
1.64 +
1.65 +define_pd_global(intx, PreInflateSpin, 40); // Determined by running design center
1.66 +
1.67 +define_pd_global(bool, RewriteBytecodes, true);
1.68 +define_pd_global(bool, RewriteFrequentPairs, true);
