1 /*

     2  * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    21  * or visit www.oracle.com if you need additional information or have any

    22  * questions.

    23  *

    24  */

    25 

    26 #ifndef CPU_ZERO_VM_GLOBALS_ZERO_HPP

    27 #define CPU_ZERO_VM_GLOBALS_ZERO_HPP

    28 

    29 #include "utilities/globalDefinitions.hpp"

    30 #include "utilities/macros.hpp"

    31 

    32 // Set the default values for platform dependent flags used by the

    33 // runtime system.  See globals.hpp for details of what they do.

    34 

    35 define_pd_global(bool,  ShareVtableStubs,     true);

    36 define_pd_global(bool,  NeedsDeoptSuspend,    false);

    37 

    38 define_pd_global(bool,  ImplicitNullChecks,   true);

    39 define_pd_global(bool,  TrapBasedNullChecks,  false);

    40 define_pd_global(bool,  UncommonNullCast,     true);

    41 

    42 define_pd_global(uintx, CodeCacheSegmentSize, 64 TIERED_ONLY(+64)); // Tiered compilation has large code-entry alignment.

    43 define_pd_global(intx,  CodeEntryAlignment,   32);

    44 define_pd_global(intx,  OptoLoopAlignment,    16);

    45 define_pd_global(intx,  InlineFrequencyCount, 100);

    46 define_pd_global(intx,  InlineSmallCode,      1000);

    47 

    48 // not used, but must satisfy following constraints:

    49 // 1.) <VALUE> must be in the allowed range for intx *and*

    50 // 2.) <VALUE> % BytesPerLong == 0 so as to not

    51 //     violate the constraint verifier on JVM start-up.

    52 define_pd_global(intx,  InitArrayShortSize,   0);

    53 

    54 #define DEFAULT_STACK_YELLOW_PAGES (2)

    55 #define DEFAULT_STACK_RED_PAGES (1)

    56 #define DEFAULT_STACK_SHADOW_PAGES (5 LP64_ONLY(+1) DEBUG_ONLY(+3))

    57 #define DEFAULT_STACK_RESERVED_PAGES (0)

    58 

    59 #define MIN_STACK_YELLOW_PAGES DEFAULT_STACK_YELLOW_PAGES

    60 #define MIN_STACK_RED_PAGES DEFAULT_STACK_RED_PAGES

    61 #define MIN_STACK_SHADOW_PAGES DEFAULT_STACK_SHADOW_PAGES

    62 #define MIN_STACK_RESERVED_PAGES (0)

    63 

    64 define_pd_global(intx,  StackYellowPages,     DEFAULT_STACK_YELLOW_PAGES);

    65 define_pd_global(intx,  StackRedPages,        DEFAULT_STACK_RED_PAGES);

    66 define_pd_global(intx,  StackShadowPages,     DEFAULT_STACK_SHADOW_PAGES);

    67 define_pd_global(intx,  StackReservedPages,   DEFAULT_STACK_RESERVED_PAGES);

    68 

    69 define_pd_global(bool,  RewriteBytecodes,     true);

    70 define_pd_global(bool,  RewriteFrequentPairs, true);

    71 

    72 define_pd_global(bool,  UseMembar,            true);

    73 

    74 // GC Ergo Flags

    75 define_pd_global(size_t, CMSYoungGenPerWorker, 16*M);  // default max size of CMS young gen, per GC worker thread

    76 

    77 define_pd_global(uintx, TypeProfileLevel, 0);

    78 

    79 define_pd_global(bool, PreserveFramePointer, false);

    80 

    81 // No performance work done here yet.

    82 define_pd_global(bool, CompactStrings, false);

    83 

    84 #define ARCH_FLAGS(develop, \

    85                    product, \

    86                    diagnostic, \

    87                    experimental, \

    88                    notproduct, \

    89                    range, \

    90                    constraint, \

    91                    writeable)  \

    92                                                                             \

    93   product(bool, UseFastEmptyMethods, true,                                  \

    94           "Use fast method entry code for empty methods")                   \

    95                                                                             \

    96   product(bool, UseFastAccessorMethods, true,                               \

    97           "Use fast method entry code for accessor methods")                \

    98                                                                             \

    99 

   100 #endif // CPU_ZERO_VM_GLOBALS_ZERO_HPP