Mercurial > hg > truffle
view src/os_cpu/linux_sparc/vm/vmStructs_linux_sparc.hpp @ 453:c96030fff130
6684579: SoftReference processing can be made more efficient
Summary: For current soft-ref clearing policies, we can decide at marking time if a soft-reference will definitely not be cleared, postponing the decision of whether it will definitely be cleared to the final reference processing phase. This can be especially beneficial in the case of concurrent collectors where the marking is usually concurrent but reference processing is usually not.
Reviewed-by: jmasa
| author | ysr |
|---|---|
| date | Thu, 20 Nov 2008 16:56:09 -0800 |
| parents | d1605aabd0a1 |
| children | c18cbe5936b8 |
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/* * Copyright 2000-2008 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. * */ // These are the OS and CPU-specific fields, types and integer // constants required by the Serviceability Agent. This file is // referenced by vmStructs.cpp. #define VM_STRUCTS_OS_CPU(nonstatic_field, static_field, unchecked_nonstatic_field, volatile_nonstatic_field, nonproduct_nonstatic_field, c2_nonstatic_field, unchecked_c1_static_field, unchecked_c2_static_field, last_entry) \ \ /******************************/ \ /* Threads (NOTE: incomplete) */ \ /******************************/ \ \ nonstatic_field(JavaThread, _base_of_stack_pointer, intptr_t*) \ nonstatic_field(OSThread, _thread_id, pid_t) \ nonstatic_field(OSThread, _pthread_id, pthread_t) \ /* This must be the last entry, and must be present */ \ last_entry() #define VM_TYPES_OS_CPU(declare_type, declare_toplevel_type, declare_oop_type, declare_integer_type, declare_unsigned_integer_type, declare_c1_toplevel_type, declare_c2_type, declare_c2_toplevel_type, last_entry) \ \ /**********************/ \ /* POSIX Thread IDs */ \ /**********************/ \ \ declare_integer_type(pid_t) \ declare_unsigned_integer_type(pthread_t) \ \ /* This must be the last entry, and must be present */ \ last_entry() #define VM_INT_CONSTANTS_OS_CPU(declare_constant, declare_preprocessor_constant, declare_c1_constant, declare_c2_constant, declare_c2_preprocessor_constant, last_entry) \ \ /************************/ \ /* JavaThread constants */ \ /************************/ \ \ declare_constant(JavaFrameAnchor::flushed) \ \ /* This must be the last entry, and must be present */ \ last_entry() #define VM_LONG_CONSTANTS_OS_CPU(declare_constant, declare_preprocessor_constant, declare_c1_constant, declare_c2_constant, declare_c2_preprocessor_constant, last_entry) \ \ /* This must be the last entry, and must be present */ \ last_entry()