Mon, 25 Jan 2010 18:03:29 -0500
6919980: G1: remove +UseG1GC from under experimental options (second attempt)
Summary: Trying this again, as the original change was lost.
Reviewed-by: ysr, jmasa
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1997-2002 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 | // Note: FieldType should be based on the SignatureIterator (or vice versa). |
duke@435 | 26 | // In any case, this structure should be re-thought at some point. |
duke@435 | 27 | |
duke@435 | 28 | // A FieldType is used to determine the type of a field from a signature string. |
duke@435 | 29 | |
duke@435 | 30 | class FieldType: public AllStatic { |
duke@435 | 31 | private: |
duke@435 | 32 | static void skip_optional_size(symbolOop signature, int* index); |
duke@435 | 33 | static bool is_valid_array_signature(symbolOop signature); |
duke@435 | 34 | public: |
duke@435 | 35 | |
duke@435 | 36 | // Return basic type |
duke@435 | 37 | static BasicType basic_type(symbolOop signature); |
duke@435 | 38 | |
duke@435 | 39 | // Testing |
duke@435 | 40 | static bool is_array(symbolOop signature) { return signature->utf8_length() > 1 && signature->byte_at(0) == '[' && is_valid_array_signature(signature); } |
duke@435 | 41 | |
duke@435 | 42 | static bool is_obj(symbolOop signature) { |
duke@435 | 43 | int sig_length = signature->utf8_length(); |
duke@435 | 44 | // Must start with 'L' and end with ';' |
duke@435 | 45 | return (sig_length >= 2 && |
duke@435 | 46 | (signature->byte_at(0) == 'L') && |
duke@435 | 47 | (signature->byte_at(sig_length - 1) == ';')); |
duke@435 | 48 | } |
duke@435 | 49 | |
duke@435 | 50 | // Parse field and extract array information. Works for T_ARRAY only. |
duke@435 | 51 | static BasicType get_array_info(symbolOop signature, jint* dimension, symbolOop *object_key, TRAPS); |
duke@435 | 52 | }; |