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src/share/vm/ci/ciObjectFactory.hpp@136b78722a08 (annotated)

src/share/vm/ci/ciObjectFactory.hpp

Wed, 09 Jun 2010 18:50:45 -0700

author

jrose

date

Wed, 09 Jun 2010 18:50:45 -0700

changeset 1957

136b78722a08

parent 1907

c18cbe5936b8

child 2314

f95d63e2154a

permissions

-rw-r--r--

6939203: JSR 292 needs method handle constants
Summary: Add new CP types CONSTANT_MethodHandle, CONSTANT_MethodType; extend 'ldc' bytecode.
Reviewed-by: twisti, never

duke@435	1	/*
trims@1907	2	* Copyright (c) 1999, 2007, Oracle and/or its affiliates. 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	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// ciObjectFactory
duke@435	26	//
duke@435	27	// This class handles requests for the creation of new instances
duke@435	28	// of ciObject and its subclasses. It contains a caching mechanism
duke@435	29	// which ensures that for each oop, at most one ciObject is created.
duke@435	30	// This invariant allows efficient implementation of ciObject.
duke@435	31	class ciObjectFactory : public ResourceObj {
duke@435	32	private:
duke@435	33	static volatile bool _initialized;
duke@435	34	static GrowableArray<ciObject*>* _shared_ci_objects;
duke@435	35	static ciSymbol* _shared_ci_symbols[];
duke@435	36	static int _shared_ident_limit;
duke@435	37
duke@435	38	Arena* _arena;
duke@435	39	GrowableArray<ciObject*>* _ci_objects;
duke@435	40	GrowableArray<ciMethod*>* _unloaded_methods;
duke@435	41	GrowableArray<ciKlass*>* _unloaded_klasses;
jrose@1957	42	GrowableArray<ciInstance*>* _unloaded_instances;
duke@435	43	GrowableArray<ciReturnAddress*>* _return_addresses;
duke@435	44	int _next_ident;
duke@435	45
duke@435	46	public:
duke@435	47	struct NonPermObject : public ResourceObj {
duke@435	48	ciObject* _object;
duke@435	49	NonPermObject* _next;
duke@435	50
duke@435	51	inline NonPermObject(NonPermObject* &bucket, oop key, ciObject* object);
duke@435	52	ciObject* object() { return _object; }
duke@435	53	NonPermObject* &next() { return _next; }
duke@435	54	};
duke@435	55	private:
duke@435	56	enum { NON_PERM_BUCKETS = 61 };
duke@435	57	NonPermObject* _non_perm_bucket[NON_PERM_BUCKETS];
duke@435	58	int _non_perm_count;
duke@435	59
duke@435	60	int find(oop key, GrowableArray<ciObject*>* objects);
duke@435	61	bool is_found_at(int index, oop key, GrowableArray<ciObject*>* objects);
duke@435	62	void insert(int index, ciObject* obj, GrowableArray<ciObject*>* objects);
duke@435	63	ciObject* create_new_object(oop o);
duke@435	64	static bool is_equal(NonPermObject* p, oop key) {
duke@435	65	return p->object()->get_oop() == key;
duke@435	66	}
duke@435	67
duke@435	68	NonPermObject* &find_non_perm(oop key);
duke@435	69	void insert_non_perm(NonPermObject* &where, oop key, ciObject* obj);
duke@435	70
duke@435	71	void init_ident_of(ciObject* obj);
duke@435	72
duke@435	73	Arena* arena() { return _arena; }
duke@435	74
duke@435	75	void print_contents_impl();
duke@435	76
jrose@1957	77	ciInstance* get_unloaded_instance(ciInstanceKlass* klass);
jrose@1957	78
duke@435	79	public:
duke@435	80	static bool is_initialized() { return _initialized; }
duke@435	81
duke@435	82	static void initialize();
duke@435	83	void init_shared_objects();
duke@435	84
duke@435	85	ciObjectFactory(Arena* arena, int expected_size);
duke@435	86
duke@435	87
duke@435	88	// Get the ciObject corresponding to some oop.
duke@435	89	ciObject* get(oop key);
duke@435	90
duke@435	91	// Get the ciSymbol corresponding to one of the vmSymbols.
duke@435	92	static ciSymbol* vm_symbol_at(int index);
duke@435	93
duke@435	94	// Get the ciMethod representing an unloaded/unfound method.
duke@435	95	ciMethod* get_unloaded_method(ciInstanceKlass* holder,
duke@435	96	ciSymbol* name,
duke@435	97	ciSymbol* signature);
duke@435	98
duke@435	99	// Get a ciKlass representing an unloaded klass.
duke@435	100	ciKlass* get_unloaded_klass(ciKlass* accessing_klass,
duke@435	101	ciSymbol* name,
duke@435	102	bool create_if_not_found);
duke@435	103
jrose@1957	104	// Get a ciInstance representing an unresolved klass mirror.
jrose@1957	105	ciInstance* get_unloaded_klass_mirror(ciKlass* type);
jrose@1957	106
jrose@1957	107	// Get a ciInstance representing an unresolved method handle constant.
jrose@1957	108	ciInstance* get_unloaded_method_handle_constant(ciKlass* holder,
jrose@1957	109	ciSymbol* name,
jrose@1957	110	ciSymbol* signature,
jrose@1957	111	int ref_kind);
jrose@1957	112
jrose@1957	113	// Get a ciInstance representing an unresolved method type constant.
jrose@1957	114	ciInstance* get_unloaded_method_type_constant(ciSymbol* signature);
jrose@1957	115
duke@435	116
duke@435	117	// Get the ciMethodData representing the methodData for a method
duke@435	118	// with none.
duke@435	119	ciMethodData* get_empty_methodData();
duke@435	120
duke@435	121	ciReturnAddress* get_return_address(int bci);
duke@435	122
duke@435	123	void print_contents();
duke@435	124	void print();
duke@435	125	};