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src/cpu/sparc/vm/globals_sparc.hpp@04ff2f6cd0eb (annotated)

src/cpu/sparc/vm/globals_sparc.hpp

Tue, 17 Oct 2017 12:58:25 +0800

author

aoqi

date

Tue, 17 Oct 2017 12:58:25 +0800

changeset 7994

04ff2f6cd0eb

parent 7854

e8260b6328fb

parent 6876

710a3c8b516e

child 9852

70aa912cebe5

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#ifndef CPU_SPARC_VM_GLOBALS_SPARC_HPP
aoqi@0	26	#define CPU_SPARC_VM_GLOBALS_SPARC_HPP
aoqi@0	27
aoqi@0	28	#include "utilities/globalDefinitions.hpp"
aoqi@0	29	#include "utilities/macros.hpp"
aoqi@0	30
aoqi@0	31	// Sets the default values for platform dependent flags used by the runtime system.
aoqi@0	32	// (see globals.hpp)
aoqi@0	33
aoqi@0	34	// For sparc we do not do call backs when a thread is in the interpreter, because the
aoqi@0	35	// interpreter dispatch needs at least two instructions - first to load the dispatch address
aoqi@0	36	// in a register, and second to jmp. The swapping of the dispatch table may occur _after_
aoqi@0	37	// the load of the dispatch address and hence the jmp would still go to the location
aoqi@0	38	// according to the prior table. So, we let the thread continue and let it block by itself.
aoqi@0	39	define_pd_global(bool, DontYieldALot, true); // yield no more than 100 times per second
aoqi@0	40	define_pd_global(bool, ConvertSleepToYield, false); // do not convert sleep(0) to yield. Helps GUI
aoqi@0	41	define_pd_global(bool, ShareVtableStubs, false); // improves performance markedly for mtrt and compress
aoqi@0	42	define_pd_global(bool, CountInterpCalls, false); // not implemented in the interpreter
aoqi@0	43	define_pd_global(bool, NeedsDeoptSuspend, true); // register window machines need this
aoqi@0	44
aoqi@0	45	define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks
aoqi@0	46	define_pd_global(bool, TrapBasedNullChecks, false); // Not needed on sparc.
aoqi@0	47	define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs passed to check cast
aoqi@0	48
aoqi@0	49	define_pd_global(intx, CodeEntryAlignment, 32);
aoqi@0	50	// The default setting 16/16 seems to work best.
aoqi@0	51	// (For _228_jack 16/16 is 2% better than 4/4, 16/4, 32/32, 32/16, or 16/32.)
aoqi@0	52	define_pd_global(intx, OptoLoopAlignment, 16); // = 4*wordSize
aoqi@0	53	define_pd_global(intx, InlineFrequencyCount, 50); // we can use more inlining on the SPARC
aoqi@0	54	define_pd_global(intx, InlineSmallCode, 1500);
aoqi@0	55
aoqi@0	56	#ifdef _LP64
aoqi@0	57	// Stack slots are 2X larger in LP64 than in the 32 bit VM.
aoqi@0	58	define_pd_global(intx, ThreadStackSize, 1024);
aoqi@0	59	define_pd_global(intx, VMThreadStackSize, 1024);
aoqi@0	60	define_pd_global(intx, StackShadowPages, 10 DEBUG_ONLY(+1));
aoqi@0	61	#else
aoqi@0	62	define_pd_global(intx, ThreadStackSize, 512);
aoqi@0	63	define_pd_global(intx, VMThreadStackSize, 512);
aoqi@0	64	define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1));
aoqi@0	65	#endif
aoqi@0	66
aoqi@0	67	define_pd_global(intx, StackYellowPages, 2);
aoqi@0	68	define_pd_global(intx, StackRedPages, 1);
aoqi@0	69
aoqi@0	70	define_pd_global(intx, PreInflateSpin, 40); // Determined by running design center
aoqi@0	71
aoqi@0	72	define_pd_global(bool, RewriteBytecodes, true);
aoqi@0	73	define_pd_global(bool, RewriteFrequentPairs, true);
aoqi@0	74
aoqi@0	75	define_pd_global(bool, UseMembar, false);
aoqi@0	76
zmajo@7854	77	define_pd_global(bool, PreserveFramePointer, false);
zmajo@7854	78
aoqi@0	79	// GC Ergo Flags
aoqi@0	80	define_pd_global(uintx, CMSYoungGenPerWorker, 16*M); // default max size of CMS young gen, per GC worker thread
aoqi@0	81
aoqi@0	82	define_pd_global(uintx, TypeProfileLevel, 0);
aoqi@0	83
aoqi@0	84	#define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct) \
aoqi@0	85	\
aoqi@0	86	product(intx, UseVIS, 99, \
aoqi@0	87	"Highest supported VIS instructions set on Sparc") \
aoqi@0	88	\
aoqi@0	89	product(bool, UseCBCond, false, \
aoqi@0	90	"Use compare and branch instruction on SPARC") \
aoqi@0	91	\
aoqi@0	92	product(bool, UseBlockZeroing, false, \
aoqi@0	93	"Use special cpu instructions for block zeroing") \
aoqi@0	94	\
aoqi@0	95	product(intx, BlockZeroingLowLimit, 2048, \
aoqi@0	96	"Minimum size in bytes when block zeroing will be used") \
aoqi@0	97	\
aoqi@0	98	product(bool, UseBlockCopy, false, \
aoqi@0	99	"Use special cpu instructions for block copy") \
aoqi@0	100	\
aoqi@0	101	product(intx, BlockCopyLowLimit, 2048, \
aoqi@0	102	"Minimum size in bytes when block copy will be used") \
aoqi@0	103	\
aoqi@0	104	develop(bool, UseV8InstrsOnly, false, \
aoqi@0	105	"Use SPARC-V8 Compliant instruction subset") \
aoqi@0	106	\
aoqi@0	107	product(bool, UseNiagaraInstrs, false, \
aoqi@0	108	"Use Niagara-efficient instruction subset") \
aoqi@0	109	\
aoqi@0	110	develop(bool, UseCASForSwap, false, \
aoqi@0	111	"Do not use swap instructions, but only CAS (in a loop) on SPARC")\
aoqi@0	112	\
aoqi@0	113	product(uintx, ArraycopySrcPrefetchDistance, 0, \
aoqi@0	114	"Distance to prefetch source array in arracopy") \
aoqi@0	115	\
aoqi@0	116	product(uintx, ArraycopyDstPrefetchDistance, 0, \
aoqi@0	117	"Distance to prefetch destination array in arracopy") \
aoqi@0	118
aoqi@0	119	#endif // CPU_SPARC_VM_GLOBALS_SPARC_HPP