Mercurial > hg > graal-compiler
view src/share/vm/classfile/classFileStream.cpp @ 616:4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
6720334: G1: don't update RSets of collection set regions during an evacuation pause
Summary: Introduced a deferred update mechanism for delaying the rset updates during the collection pause
Reviewed-by: apetrusenko, tonyp
author | iveresov |
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date | Fri, 06 Mar 2009 13:50:14 -0800 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 1997-2005 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. * */ #include "incls/_precompiled.incl" #include "incls/_classFileStream.cpp.incl" void ClassFileStream::truncated_file_error(TRAPS) { THROW_MSG(vmSymbols::java_lang_ClassFormatError(), "Truncated class file"); } ClassFileStream::ClassFileStream(u1* buffer, int length, char* source) { _buffer_start = buffer; _buffer_end = buffer + length; _current = buffer; _source = source; _need_verify = false; } u1 ClassFileStream::get_u1(TRAPS) { if (_need_verify) { guarantee_more(1, CHECK_0); } else { assert(1 <= _buffer_end - _current, "buffer overflow"); } return *_current++; } u2 ClassFileStream::get_u2(TRAPS) { if (_need_verify) { guarantee_more(2, CHECK_0); } else { assert(2 <= _buffer_end - _current, "buffer overflow"); } u1* tmp = _current; _current += 2; return Bytes::get_Java_u2(tmp); } u4 ClassFileStream::get_u4(TRAPS) { if (_need_verify) { guarantee_more(4, CHECK_0); } else { assert(4 <= _buffer_end - _current, "buffer overflow"); } u1* tmp = _current; _current += 4; return Bytes::get_Java_u4(tmp); } u8 ClassFileStream::get_u8(TRAPS) { if (_need_verify) { guarantee_more(8, CHECK_0); } else { assert(8 <= _buffer_end - _current, "buffer overflow"); } u1* tmp = _current; _current += 8; return Bytes::get_Java_u8(tmp); } void ClassFileStream::skip_u1(int length, TRAPS) { if (_need_verify) { guarantee_more(length, CHECK); } _current += length; } void ClassFileStream::skip_u2(int length, TRAPS) { if (_need_verify) { guarantee_more(length * 2, CHECK); } _current += length * 2; }