Mercurial > hg > truffle
view src/os_cpu/windows_x86/vm/os_windows_x86.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) 1999, 2009, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ // // NOTE: we are back in class os here, not win32 // #ifdef AMD64 static jint (*atomic_xchg_func) (jint, volatile jint*); static intptr_t (*atomic_xchg_ptr_func) (intptr_t, volatile intptr_t*); static jint (*atomic_cmpxchg_func) (jint, volatile jint*, jint); static jlong (*atomic_cmpxchg_long_func) (jlong, volatile jlong*, jlong); static jint (*atomic_add_func) (jint, volatile jint*); static intptr_t (*atomic_add_ptr_func) (intptr_t, volatile intptr_t*); static jint atomic_xchg_bootstrap (jint, volatile jint*); static intptr_t atomic_xchg_ptr_bootstrap (intptr_t, volatile intptr_t*); static jint atomic_cmpxchg_bootstrap (jint, volatile jint*, jint); #else static jlong (*atomic_cmpxchg_long_func) (jlong, volatile jlong*, jlong); #endif // AMD64 static jlong atomic_cmpxchg_long_bootstrap(jlong, volatile jlong*, jlong); #ifdef AMD64 static jint atomic_add_bootstrap (jint, volatile jint*); static intptr_t atomic_add_ptr_bootstrap (intptr_t, volatile intptr_t*); #endif // AMD64 static void setup_fpu(); static bool supports_sse() { return true; } static bool register_code_area(char *low, char *high);