diff src/cpu/sparc/vm/globals_sparc.hpp @ 0:a61af66fc99e jdk7-b24

Initial load
author duke
date Sat, 01 Dec 2007 00:00:00 +0000
parents
children f6da6f0174ac
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cpu/sparc/vm/globals_sparc.hpp	Sat Dec 01 00:00:00 2007 +0000
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+/*
+ * Copyright 2000-2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+//
+// Sets the default values for platform dependent flags used by the runtime system.
+// (see globals.hpp)
+//
+
+// For sparc we do not do call backs when a thread is in the interpreter, because the
+// interpreter dispatch needs at least two instructions - first to load the dispatch address
+// in a register, and second to jmp. The swapping of the dispatch table may occur _after_
+// the load of the dispatch address and hence the jmp would still go to the location
+// according to the prior table. So, we let the thread continue and let it block by itself.
+define_pd_global(bool, DontYieldALot,               true);  // yield no more than 100 times per second
+define_pd_global(bool, ConvertSleepToYield,         false); // do not convert sleep(0) to yield. Helps GUI
+define_pd_global(bool, ShareVtableStubs,            false); // improves performance markedly for mtrt and compress
+define_pd_global(bool, CountInterpCalls,            false); // not implemented in the interpreter
+define_pd_global(bool, NeedsDeoptSuspend,           true); // register window machines need this
+
+define_pd_global(bool, ImplicitNullChecks,          true);  // Generate code for implicit null checks
+define_pd_global(bool, UncommonNullCast,            true);  // Uncommon-trap NULLs past to check cast
+
+define_pd_global(intx,  CodeEntryAlignment,    32);
+define_pd_global(uintx, TLABSize,              0);
+define_pd_global(uintx, NewSize, ScaleForWordSize((2048 * K) + (2 * (64 * K))));
+define_pd_global(intx,  SurvivorRatio,         8);
+define_pd_global(intx,  InlineFrequencyCount,  50);  // we can use more inlining on the SPARC
+#ifdef _LP64
+// Stack slots are 2X larger in LP64 than in the 32 bit VM.
+define_pd_global(intx,  ThreadStackSize,       1024);
+define_pd_global(intx,  VMThreadStackSize,     1024);
+#else
+define_pd_global(intx,  ThreadStackSize,       512);
+define_pd_global(intx,  VMThreadStackSize,     512);
+#endif
+
+define_pd_global(intx, StackYellowPages, 2);
+define_pd_global(intx, StackRedPages, 1);
+define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1));
+
+define_pd_global(intx,  PreInflateSpin,        40);  // Determined by running design center
+
+define_pd_global(bool, RewriteBytecodes,     true);
+define_pd_global(bool, RewriteFrequentPairs, true);