Mercurial > hg > truffle
view src/share/vm/code/vmreg.cpp @ 480:d249b360e026
6782457: CMS: Livelock in CompactibleFreeListSpace::block_size()
6736295: SIGSEGV in product jvm, assertion "these are the only valid states during a mark sweep" in fastdebug
Summary: Restructured the code in the perm gen allocation retry loop so as to avoid "safepoint-blocking" on locks, in this case the Heap_lock, while holding uninitialized allocated heap storage.
Reviewed-by: apetrusenko, iveresov, jcoomes, jmasa, poonam
author | ysr |
---|---|
date | Wed, 10 Dec 2008 23:46:10 -0800 |
parents | d1605aabd0a1 |
children | c18cbe5936b8 |
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/* * Copyright 1998-2008 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/_vmreg.cpp.incl" // First VMReg value that could refer to a stack slot VMReg VMRegImpl::stack0 = (VMReg)(intptr_t)((ConcreteRegisterImpl::number_of_registers + 1) & ~1); // VMRegs are 4 bytes wide on all platforms const int VMRegImpl::stack_slot_size = 4; const int VMRegImpl::slots_per_word = wordSize / stack_slot_size; const int VMRegImpl::register_count = ConcreteRegisterImpl::number_of_registers; // Register names const char *VMRegImpl::regName[ConcreteRegisterImpl::number_of_registers]; void VMRegImpl::print_on(outputStream* st) const { if( is_reg() ) { assert( VMRegImpl::regName[value()], "" ); st->print("%s",VMRegImpl::regName[value()]); } else if (is_stack()) { int stk = value() - stack0->value(); st->print("[%d]", stk*4); } else { st->print("BAD!"); } }