Mercurial > hg > graal-compiler
view src/share/vm/oops/symbolKlass.hpp @ 477:24fda36852ce
6727377: VM stack guard pages on Windows should PAGE_READWRITE not PAGE_EXECUTE_READWRITE
Summary: Make reguard_stack change access to RW, not execute and use os::protect_memory with the new parameter when change needed to X.
Reviewed-by: acorn, jcoomes
author | coleenp |
---|---|
date | Wed, 10 Dec 2008 15:14:29 -0800 |
parents | a61af66fc99e |
children | 4e6abf09f540 |
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/* * Copyright 1997-2006 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. * */ // a symbolKlass is the klass for a symbolOop class symbolKlass : public Klass { friend class VMStructs; private: juint _alloc_size; // allocation profiling support public: // Allocation DEFINE_ALLOCATE_PERMANENT(symbolKlass); static klassOop create_klass(TRAPS); symbolOop allocate_symbol(u1* name, int len, TRAPS); // Assumes no characters larger than 0x7F bool allocate_symbols(int names_count, const char** names, int* lengths, symbolOop* sym_oops, TRAPS); // Test operation bool oop_is_symbol() const { return true; } // Casting from klassOop static symbolKlass* cast(klassOop k) { assert(k->klass_part()->oop_is_symbol(), "cast to symbolKlass"); return (symbolKlass*) k->klass_part(); } static int header_size() { return oopDesc::header_size() + sizeof(symbolKlass)/HeapWordSize; } int oop_size(oop obj) const; int klass_oop_size() const { return object_size(); } int object_size() const { return align_object_size(header_size()); } // Garbage collection void oop_follow_contents(oop obj); int oop_adjust_pointers(oop obj); bool oop_is_parsable(oop obj) const; // Parallel Scavenge and Parallel Old PARALLEL_GC_DECLS // Allocation profiling support juint alloc_size() const { return _alloc_size; } void set_alloc_size(juint n) { _alloc_size = n; } // Iterators int oop_oop_iterate(oop obj, OopClosure* blk); int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); #ifndef PRODUCT // Printing void oop_print_value_on(oop obj, outputStream* st); void oop_print_on(oop obj, outputStream* st); #endif const char* internal_name() const; };