1 /* 2 * Copyright (c) 2015, Red Hat, Inc. and/or its affiliates. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 * 22 */ 23 24 #ifndef SHARE_VM_GC_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP 25 #define SHARE_VM_GC_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP 26 27 #include "gc/shared/strongRootsScope.hpp" 28 #include "memory/allocation.hpp" 29 #include "runtime/mutex.hpp" 30 31 class CLDClosure; 32 class CodeBlobClosure; 33 class G1CollectedHeap; 34 class G1GCPhaseTimes; 35 class G1ParPushHeapRSClosure; 36 class Monitor; 37 class OopClosure; 38 class SubTasksDone; 39 40 class ShenandoahRootProcessor : public StackObj { 41 SubTasksDone* _process_strong_tasks; 42 StrongRootsScope _srs; 43 44 enum Shenandoah_process_roots_tasks { 45 SHENANDOAH_RP_PS_Universe_oops_do, 46 SHENANDOAH_RP_PS_JNIHandles_oops_do, 47 SHENANDOAH_RP_PS_JNIHandles_weak_oops_do, 48 SHENANDOAH_RP_PS_ObjectSynchronizer_oops_do, 49 SHENANDOAH_RP_PS_FlatProfiler_oops_do, 50 SHENANDOAH_RP_PS_Management_oops_do, 51 SHENANDOAH_RP_PS_SystemDictionary_oops_do, 52 SHENANDOAH_RP_PS_ClassLoaderDataGraph_oops_do, 53 SHENANDOAH_RP_PS_jvmti_oops_do, 54 SHENANDOAH_RP_PS_CodeCache_oops_do, 55 SHENANDOAH_RP_PS_filter_satb_buffers, 56 SHENANDOAH_RP_PS_refProcessor_oops_do, 57 // Leave this one last. 58 SHENANDOAH_RP_PS_NumElements 59 }; 60 61 void process_java_roots(OopClosure* scan_non_heap_roots, 62 CLDClosure* thread_stack_clds, 63 CLDClosure* scan_strong_clds, 64 CLDClosure* scan_weak_clds, 65 CodeBlobClosure* scan_strong_code, 66 uint worker_i); 67 68 void process_vm_roots(OopClosure* scan_non_heap_roots, 69 OopClosure* scan_non_heap_weak_roots, 70 uint worker_i); 71 72 public: 73 ShenandoahRootProcessor(ShenandoahHeap* heap, uint n_workers); 74 75 void process_roots(OopClosure* strong_oops, 76 OopClosure* weak_oops, 77 CLDClosure* strong_clds, 78 CLDClosure* weak_clds, 79 CLDClosure* thread_stack_clds, 80 CodeBlobClosure* strong_code); 81 82 // Apply oops, clds and blobs to all strongly reachable roots in the system 83 void process_strong_roots(OopClosure* oops, 84 CLDClosure* clds, 85 CodeBlobClosure* blobs); 86 87 // Apply oops, clds and blobs to strongly and weakly reachable roots in the system 88 void process_all_roots(OopClosure* oops, 89 CLDClosure* clds, 90 CodeBlobClosure* blobs); 91 92 // Number of worker threads used by the root processor. 93 uint n_workers() const; 94 }; 95 96 #endif // SHARE_VM_GC_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP