jdk8-mips64-public/hotspot: src/cpu/sparc/vm/globals

     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,

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    25 //

    26 // Sets the default values for platform dependent flags used by the runtime system.

    27 // (see globals.hpp)

    28 //

    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

    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

    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

    58 define_pd_global(intx, StackYellowPages, 2);

    59 define_pd_global(intx, StackRedPages, 1);

    60 define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1));

    62 define_pd_global(intx,  PreInflateSpin,        40);  // Determined by running design center

    64 define_pd_global(bool, RewriteBytecodes,     true);

    65 define_pd_global(bool, RewriteFrequentPairs, true);

src/cpu/sparc/vm/globals_sparc.hpp@9c2ecc2ffb12