• file
• revisions
• annotate
• diff
• comparison
• raw

src/share/vm/ci/ciSymbol.cpp@ac27a9c85bea (annotated)

src/share/vm/ci/ciSymbol.cpp

Thu, 24 May 2018 18:41:44 +0800

author

aoqi

date

Thu, 24 May 2018 18:41:44 +0800

changeset 8856

ac27a9c85bea

parent 6876

710a3c8b516e

permissions

-rw-r--r--

Merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#include "precompiled.hpp"
aoqi@0	26	#include "ci/ciSymbol.hpp"
aoqi@0	27	#include "ci/ciUtilities.hpp"
aoqi@0	28	#include "memory/oopFactory.hpp"
aoqi@0	29
aoqi@0	30	// ------------------------------------------------------------------
aoqi@0	31	// ciSymbol::ciSymbol
aoqi@0	32	//
aoqi@0	33	// Preallocated symbol variant. Used with symbols from vmSymbols.
aoqi@0	34	ciSymbol::ciSymbol(Symbol* s, vmSymbols::SID sid)
aoqi@0	35	: _symbol(s), _sid(sid)
aoqi@0	36	{
aoqi@0	37	assert(_symbol != NULL, "adding null symbol");
aoqi@0	38	_symbol->increment_refcount(); // increment ref count
aoqi@0	39	assert(sid_ok(), "must be in vmSymbols");
aoqi@0	40	}
aoqi@0	41
aoqi@0	42	// Normal case for non-famous symbols.
aoqi@0	43	ciSymbol::ciSymbol(Symbol* s)
aoqi@0	44	: _symbol(s), _sid(vmSymbols::NO_SID)
aoqi@0	45	{
aoqi@0	46	assert(_symbol != NULL, "adding null symbol");
aoqi@0	47	_symbol->increment_refcount(); // increment ref count
aoqi@0	48	assert(sid_ok(), "must not be in vmSymbols");
aoqi@0	49	}
aoqi@0	50
aoqi@0	51	// ciSymbol
aoqi@0	52	//
aoqi@0	53	// This class represents a Symbol* in the HotSpot virtual
aoqi@0	54	// machine.
aoqi@0	55
aoqi@0	56	// ------------------------------------------------------------------
aoqi@0	57	// ciSymbol::as_utf8
aoqi@0	58	//
aoqi@0	59	// The text of the symbol as a null-terminated C string.
aoqi@0	60	const char* ciSymbol::as_utf8() {
aoqi@0	61	VM_QUICK_ENTRY_MARK;
aoqi@0	62	Symbol* s = get_symbol();
aoqi@0	63	return s->as_utf8();
aoqi@0	64	}
aoqi@0	65
aoqi@0	66	// The text of the symbol as a null-terminated C string.
aoqi@0	67	const char* ciSymbol::as_quoted_ascii() {
aoqi@0	68	GUARDED_VM_QUICK_ENTRY(return get_symbol()->as_quoted_ascii();)
aoqi@0	69	}
aoqi@0	70
aoqi@0	71	// ------------------------------------------------------------------
aoqi@0	72	// ciSymbol::base
aoqi@0	73	const jbyte* ciSymbol::base() {
aoqi@0	74	GUARDED_VM_ENTRY(return get_symbol()->base();)
aoqi@0	75	}
aoqi@0	76
aoqi@0	77	// ------------------------------------------------------------------
aoqi@0	78	// ciSymbol::byte_at
aoqi@0	79	int ciSymbol::byte_at(int i) {
aoqi@0	80	GUARDED_VM_ENTRY(return get_symbol()->byte_at(i);)
aoqi@0	81	}
aoqi@0	82
aoqi@0	83	// ------------------------------------------------------------------
aoqi@0	84	// ciSymbol::starts_with
aoqi@0	85	//
aoqi@0	86	// Tests if the symbol starts with the given prefix.
aoqi@0	87	bool ciSymbol::starts_with(const char* prefix, int len) const {
aoqi@0	88	GUARDED_VM_ENTRY(return get_symbol()->starts_with(prefix, len);)
aoqi@0	89	}
aoqi@0	90
aoqi@0	91	bool ciSymbol::is_signature_polymorphic_name() const {
aoqi@0	92	GUARDED_VM_ENTRY(return MethodHandles::is_signature_polymorphic_name(get_symbol());)
aoqi@0	93	}
aoqi@0	94
aoqi@0	95	// ------------------------------------------------------------------
aoqi@0	96	// ciSymbol::index_of
aoqi@0	97	//
aoqi@0	98	// Determines where the symbol contains the given substring.
aoqi@0	99	int ciSymbol::index_of_at(int i, const char* str, int len) const {
aoqi@0	100	GUARDED_VM_ENTRY(return get_symbol()->index_of_at(i, str, len);)
aoqi@0	101	}
aoqi@0	102
aoqi@0	103	// ------------------------------------------------------------------
aoqi@0	104	// ciSymbol::utf8_length
aoqi@0	105	int ciSymbol::utf8_length() {
aoqi@0	106	GUARDED_VM_ENTRY(return get_symbol()->utf8_length();)
aoqi@0	107	}
aoqi@0	108
aoqi@0	109	// ------------------------------------------------------------------
aoqi@0	110	// ciSymbol::print_impl
aoqi@0	111	//
aoqi@0	112	// Implementation of the print method
aoqi@0	113	void ciSymbol::print_impl(outputStream* st) {
aoqi@0	114	st->print(" value=");
aoqi@0	115	print_symbol_on(st);
aoqi@0	116	}
aoqi@0	117
aoqi@0	118	// ------------------------------------------------------------------
aoqi@0	119	// ciSymbol::print_symbol_on
aoqi@0	120	//
aoqi@0	121	// Print the value of this symbol on an outputStream
aoqi@0	122	void ciSymbol::print_symbol_on(outputStream *st) {
aoqi@0	123	GUARDED_VM_ENTRY(get_symbol()->print_symbol_on(st);)
aoqi@0	124	}
aoqi@0	125
aoqi@0	126	// ------------------------------------------------------------------
aoqi@0	127	// ciSymbol::make_impl
aoqi@0	128	//
aoqi@0	129	// Make a ciSymbol from a C string (implementation).
aoqi@0	130	ciSymbol* ciSymbol::make_impl(const char* s) {
aoqi@0	131	EXCEPTION_CONTEXT;
aoqi@0	132	TempNewSymbol sym = SymbolTable::new_symbol(s, THREAD);
aoqi@0	133	if (HAS_PENDING_EXCEPTION) {
aoqi@0	134	CLEAR_PENDING_EXCEPTION;
aoqi@0	135	CURRENT_THREAD_ENV->record_out_of_memory_failure();
aoqi@0	136	return ciEnv::_unloaded_cisymbol;
aoqi@0	137	}
aoqi@0	138	return CURRENT_THREAD_ENV->get_symbol(sym);
aoqi@0	139	}
aoqi@0	140
aoqi@0	141	// ------------------------------------------------------------------
aoqi@0	142	// ciSymbol::make
aoqi@0	143	//
aoqi@0	144	// Make a ciSymbol from a C string.
aoqi@0	145	ciSymbol* ciSymbol::make(const char* s) {
aoqi@0	146	GUARDED_VM_ENTRY(return make_impl(s);)
aoqi@0	147	}