g1RootClosures.hpp revision 11020:c0ea2e3ebe83
150477Speter/* 25540Sugen * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. 370711Sobrien * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 470711Sobrien * 540440Speter * This code is free software; you can redistribute it and/or modify it 6134346Sru * under the terms of the GNU General Public License version 2 only, as 770711Sobrien * published by the Free Software Foundation. 845872Speter * 95540Sugen * This code is distributed in the hope that it will be useful, but WITHOUT 105544Sugen * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 115540Sugen * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1216619Sbde * version 2 for more details (a copy is included in the LICENSE file that 135540Sugen * accompanied this code). 1429272Speter * 1529272Speter * You should have received a copy of the GNU General Public License version 1629272Speter * 2 along with this work; if not, write to the Free Software Foundation, 175540Sugen * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1860966Speter * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#ifndef SHARE_VM_GC_G1_G1ROOTCLOSURESET_HPP 26#define SHARE_VM_GC_G1_G1ROOTCLOSURESET_HPP 27 28#include "memory/allocation.hpp" 29#include "memory/iterator.hpp" 30 31class G1CollectedHeap; 32class G1ParScanThreadState; 33 34class G1RootClosures : public CHeapObj<mtGC> { 35public: 36 // Closures to process raw oops in the root set. 37 virtual OopClosure* weak_oops() = 0; 38 virtual OopClosure* strong_oops() = 0; 39 40 // Closures to process CLDs in the root set. 41 virtual CLDClosure* weak_clds() = 0; 42 virtual CLDClosure* strong_clds() = 0; 43 44 // Applied to code blobs reachable as strong roots. 45 virtual CodeBlobClosure* strong_codeblobs() = 0; 46}; 47 48class G1EvacuationRootClosures : public G1RootClosures { 49 static G1EvacuationRootClosures* create_root_closures_ext(G1ParScanThreadState* pss, G1CollectedHeap* g1h); 50public: 51 // Flush any buffered state and deferred processing 52 virtual void flush() = 0; 53 virtual double closure_app_seconds() = 0; 54 55 // Applied to the weakly reachable CLDs when all strongly reachable 56 // CLDs are guaranteed to have been processed. 57 virtual CLDClosure* second_pass_weak_clds() = 0; 58 59 // Get a raw oop closure for processing oops, bypassing the flushing above. 60 virtual OopClosure* raw_strong_oops() = 0; 61 62 // Applied to code blobs treated as weak roots. 63 virtual CodeBlobClosure* weak_codeblobs() = 0; 64 65 // Is this closure used for tracing metadata? 66 virtual bool trace_metadata() = 0; 67 68 static G1EvacuationRootClosures* create_root_closures(G1ParScanThreadState* pss, G1CollectedHeap* g1h); 69}; 70 71#endif // SHARE_VM_GC_G1_G1ROOTCLOSURESET_HPP 72