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src/share/vm/ci/ciSymbol.hpp@b4776199210f (annotated)

src/share/vm/ci/ciSymbol.hpp

Mon, 26 Apr 2010 23:59:45 -0700

author

never

date

Mon, 26 Apr 2010 23:59:45 -0700

changeset 1832

b4776199210f

parent 1573

dd57230ba8fe

child 1862

cd5dbf694d45

permissions

-rw-r--r--

6943485: JVMTI always on capabilities change code generation too much
Reviewed-by: twisti, dcubed

duke@435	1	/*
twisti@1573	2	* Copyright 1999-2009 Sun Microsystems, Inc. All Rights Reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// ciSymbol
duke@435	26	//
duke@435	27	// This class represents a symbolOop in the HotSpot virtual
duke@435	28	// machine.
duke@435	29	class ciSymbol : public ciObject {
duke@435	30	CI_PACKAGE_ACCESS
twisti@1573	31	// These friends all make direct use of get_symbolOop:
duke@435	32	friend class ciEnv;
duke@435	33	friend class ciInstanceKlass;
duke@435	34	friend class ciSignature;
duke@435	35	friend class ciMethod;
duke@435	36	friend class ciObjArrayKlass;
duke@435	37
duke@435	38	private:
duke@435	39	ciSymbol(symbolOop s) : ciObject(s) {}
duke@435	40	ciSymbol(symbolHandle s); // for use with vmSymbolHandles
duke@435	41
twisti@1573	42	symbolOop get_symbolOop() const { return (symbolOop)get_oop(); }
duke@435	43
duke@435	44	const char* type_string() { return "ciSymbol"; }
duke@435	45
duke@435	46	void print_impl(outputStream* st);
duke@435	47
twisti@1573	48	// This is public in symbolOop but private here, because the base can move:
duke@435	49	jbyte* base();
duke@435	50
duke@435	51	// Make a ciSymbol from a C string (implementation).
duke@435	52	static ciSymbol* make_impl(const char* s);
duke@435	53
duke@435	54	public:
duke@435	55	// The text of the symbol as a null-terminated utf8 string.
duke@435	56	const char* as_utf8();
duke@435	57	int utf8_length();
duke@435	58
twisti@1573	59	// Return the i-th utf8 byte, where i < utf8_length
twisti@1573	60	int byte_at(int i);
twisti@1573	61
twisti@1573	62	// Tests if the symbol starts with the given prefix.
twisti@1573	63	bool starts_with(const char* prefix, int len) const;
twisti@1573	64
twisti@1573	65	// Determines where the symbol contains the given substring.
twisti@1573	66	int index_of_at(int i, const char* str, int len) const;
twisti@1573	67
duke@435	68	// What kind of ciObject is this?
duke@435	69	bool is_symbol() { return true; }
duke@435	70
duke@435	71	void print_symbol_on(outputStream* st);
duke@435	72	void print_symbol() {
duke@435	73	print_symbol_on(tty);
duke@435	74	}
duke@435	75
duke@435	76	// Make a ciSymbol from a C string.
duke@435	77	// Consider adding to vmSymbols.hpp instead of using this constructor.
duke@435	78	// (Your code will be less subject to typographical bugs.)
duke@435	79	static ciSymbol* make(const char* s);
duke@435	80
duke@435	81	#define CI_SYMBOL_DECLARE(name, ignore_def) \
duke@435	82	static ciSymbol* name() { return ciObjectFactory::vm_symbol_at(vmSymbols::VM_SYMBOL_ENUM_NAME(name)); }
duke@435	83	VM_SYMBOLS_DO(CI_SYMBOL_DECLARE, CI_SYMBOL_DECLARE)
duke@435	84	#undef CI_SYMBOL_DECLARE
duke@435	85	};