Mercurial > hg > truffle
diff src/share/vm/oops/symbolKlass.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 4e6abf09f540 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/oops/symbolKlass.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,74 @@ +/* + * 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; +};