Mercurial > hg > truffle
view src/cpu/zero/vm/frame_zero.hpp @ 1837:c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
Summary: Inserted missing yield(check)s in closures used during the work-stealing phase of parallel concurrent marking, a missing synchronous yield-request in the cms perm gen allocation path, and a terminator-terminator for the offer_termination invocation that monitors the yield status of the concurrent marking task. Elaborated some documentation comments and made some task queue termination loop flags configurable at start-up to aid debugging in the field.
Reviewed-by: jmasa, johnc, poonam
author | ysr |
---|---|
date | Wed, 29 Sep 2010 16:17:02 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
line wrap: on
line source
/* * Copyright (c) 2003, 2007, Oracle and/or its affiliates. All rights reserved. * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc. * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ // A frame represents a physical stack frame on the Zero stack. public: enum { pc_return_offset = 0 }; // Constructor public: frame(ZeroFrame* zeroframe, intptr_t* sp); private: ZeroFrame* _zeroframe; public: const ZeroFrame *zeroframe() const { return _zeroframe; } intptr_t* fp() const { return (intptr_t *) zeroframe(); } #ifdef CC_INTERP inline interpreterState get_interpreterState() const; #endif // CC_INTERP public: const EntryFrame *zero_entryframe() const { return zeroframe()->as_entry_frame(); } const InterpreterFrame *zero_interpreterframe() const { return zeroframe()->as_interpreter_frame(); } const SharkFrame *zero_sharkframe() const { return zeroframe()->as_shark_frame(); } public: bool is_fake_stub_frame() const; public: frame sender_for_nonentry_frame(RegisterMap* map) const; public: void zero_print_on_error(int index, outputStream* st, char* buf, int buflen) const;