Mercurial > hg > truffle
view src/share/vm/gc_implementation/g1/g1CodeCacheRemSet.hpp @ 21791:cd36556e1b78
Remove conditional makefile-based compilation of jvmci from mx_graal.py
author | Stefan Anzinger <stefan.anzinger@oracle.com> |
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date | Mon, 08 Jun 2015 14:25:25 +0200 |
parents | 7baf47cb97cb |
children |
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/* * Copyright (c) 2014, 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. * */ #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1CODECACHEREMSET_HPP #define SHARE_VM_GC_IMPLEMENTATION_G1_G1CODECACHEREMSET_HPP #include "memory/allocation.hpp" class CodeBlobClosure; class CodeRootSetTable; class HeapRegion; class nmethod; // Implements storage for a set of code roots. // All methods that modify the set are not thread-safe except if otherwise noted. class G1CodeRootSet VALUE_OBJ_CLASS_SPEC { friend class G1CodeRootSetTest; private: const static size_t SmallSize = 32; const static size_t Threshold = 24; const static size_t LargeSize = 512; CodeRootSetTable* _table; CodeRootSetTable* load_acquire_table(); size_t _length; void move_to_large(); void allocate_small_table(); public: G1CodeRootSet() : _table(NULL), _length(0) {} ~G1CodeRootSet(); static void purge(); static size_t static_mem_size(); void add(nmethod* method); bool remove(nmethod* method); // Safe to call without synchronization, but may return false negatives. bool contains(nmethod* method); void clear(); void nmethods_do(CodeBlobClosure* blk) const; // Remove all nmethods which no longer contain pointers into our "owner" region void clean(HeapRegion* owner); bool is_empty() { bool empty = length() == 0; assert(empty == (_table == NULL), "is empty only if table is deallocated"); return empty; } // Length in elements size_t length() const { return _length; } // Memory size in bytes taken by this set. size_t mem_size(); }; #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1CODECACHEREMSET_HPP