Mercurial > hg > graal-compiler
view src/share/vm/oops/constantPoolKlass.hpp @ 477:24fda36852ce
6727377: VM stack guard pages on Windows should PAGE_READWRITE not PAGE_EXECUTE_READWRITE
Summary: Make reguard_stack change access to RW, not execute and use os::protect_memory with the new parameter when change needed to X.
Reviewed-by: acorn, jcoomes
author | coleenp |
---|---|
date | Wed, 10 Dec 2008 15:14:29 -0800 |
parents | d1605aabd0a1 |
children | 0af8b0718fc9 |
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/* * Copyright 1997-2008 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. * */ // A constantPoolKlass is the klass of a constantPoolOop class constantPoolKlass : public Klass { juint _alloc_size; // allocation profiling support public: // Dispatched klass operations bool oop_is_constantPool() const { return true; } int oop_size(oop obj) const; int klass_oop_size() const { return object_size(); } // Allocation DEFINE_ALLOCATE_PERMANENT(constantPoolKlass); constantPoolOop allocate(int length, TRAPS); static klassOop create_klass(TRAPS); // Casting from klassOop static constantPoolKlass* cast(klassOop k) { assert(k->klass_part()->oop_is_constantPool(), "cast to constantPoolKlass"); return (constantPoolKlass*) k->klass_part(); } // Sizing static int header_size() { return oopDesc::header_size() + sizeof(constantPoolKlass)/HeapWordSize; } int object_size() const { return align_object_size(header_size()); } // Garbage collection void oop_follow_contents(oop obj); int oop_adjust_pointers(oop obj); // Parallel Scavenge and Parallel Old PARALLEL_GC_DECLS // Iterators int oop_oop_iterate(oop obj, OopClosure* blk); int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); // Allocation profiling support // no idea why this is pure virtual and not in Klass ??? juint alloc_size() const { return _alloc_size; } void set_alloc_size(juint n) { _alloc_size = n; } #ifndef PRODUCT public: // Printing void oop_print_on(oop obj, outputStream* st); #endif public: // Verification const char* internal_name() const; void oop_verify_on(oop obj, outputStream* st); // tells whether obj is partially constructed (gc during class loading) bool oop_partially_loaded(oop obj) const; void oop_set_partially_loaded(oop obj); #ifndef PRODUCT // Compile the world support static void preload_and_initialize_all_classes(oop constant_pool, TRAPS); #endif };