Tue, 19 May 2015 15:49:27 +0200
8061715: gc/g1/TestShrinkAuxiliaryData15.java fails with java.lang.RuntimeException: heap decommit failed - after > before
Summary: added WhiteBox methods to count regions and exact aux data sizes
Reviewed-by: jwilhelm, brutisso
mgerdin@7659 | 1 | /* |
mgerdin@7659 | 2 | * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
mgerdin@7659 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
mgerdin@7659 | 4 | * |
mgerdin@7659 | 5 | * This code is free software; you can redistribute it and/or modify it |
mgerdin@7659 | 6 | * under the terms of the GNU General Public License version 2 only, as |
mgerdin@7659 | 7 | * published by the Free Software Foundation. |
mgerdin@7659 | 8 | * |
mgerdin@7659 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
mgerdin@7659 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
mgerdin@7659 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
mgerdin@7659 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
mgerdin@7659 | 13 | * accompanied this code). |
mgerdin@7659 | 14 | * |
mgerdin@7659 | 15 | * You should have received a copy of the GNU General Public License version |
mgerdin@7659 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
mgerdin@7659 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
mgerdin@7659 | 18 | * |
mgerdin@7659 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
mgerdin@7659 | 20 | * or visit www.oracle.com if you need additional information or have any |
mgerdin@7659 | 21 | * questions. |
mgerdin@7659 | 22 | * |
mgerdin@7659 | 23 | */ |
mgerdin@7659 | 24 | |
mgerdin@7659 | 25 | #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_ROOTPROCESSOR_HPP |
mgerdin@7659 | 26 | #define SHARE_VM_GC_IMPLEMENTATION_G1_ROOTPROCESSOR_HPP |
mgerdin@7659 | 27 | |
mgerdin@7659 | 28 | #include "memory/allocation.hpp" |
mgerdin@7659 | 29 | #include "memory/sharedHeap.hpp" |
mgerdin@7659 | 30 | #include "runtime/mutex.hpp" |
mgerdin@7659 | 31 | |
mgerdin@7659 | 32 | class CLDClosure; |
mgerdin@7659 | 33 | class CodeBlobClosure; |
mgerdin@7659 | 34 | class G1CollectedHeap; |
brutisso@7660 | 35 | class G1GCPhaseTimes; |
mgerdin@7659 | 36 | class G1ParPushHeapRSClosure; |
mgerdin@7659 | 37 | class Monitor; |
mgerdin@7659 | 38 | class OopClosure; |
mgerdin@7659 | 39 | class SubTasksDone; |
mgerdin@7659 | 40 | |
mgerdin@7659 | 41 | // Scoped object to assist in applying oop, CLD and code blob closures to |
mgerdin@7659 | 42 | // root locations. Handles claiming of different root scanning tasks |
mgerdin@7659 | 43 | // and takes care of global state for root scanning via a StrongRootsScope. |
mgerdin@7659 | 44 | // In the parallel case there is a shared G1RootProcessor object where all |
mgerdin@7659 | 45 | // worker thread call the process_roots methods. |
mgerdin@7659 | 46 | class G1RootProcessor : public StackObj { |
mgerdin@7659 | 47 | G1CollectedHeap* _g1h; |
mgerdin@7659 | 48 | SubTasksDone* _process_strong_tasks; |
mgerdin@7659 | 49 | SharedHeap::StrongRootsScope _srs; |
mgerdin@7659 | 50 | |
mgerdin@7659 | 51 | // Used to implement the Thread work barrier. |
mgerdin@7659 | 52 | Monitor _lock; |
mgerdin@7659 | 53 | volatile jint _n_workers_discovered_strong_classes; |
mgerdin@7659 | 54 | |
mgerdin@7659 | 55 | enum G1H_process_roots_tasks { |
mgerdin@7659 | 56 | G1RP_PS_Universe_oops_do, |
mgerdin@7659 | 57 | G1RP_PS_JNIHandles_oops_do, |
mgerdin@7659 | 58 | G1RP_PS_ObjectSynchronizer_oops_do, |
mgerdin@7659 | 59 | G1RP_PS_FlatProfiler_oops_do, |
mgerdin@7659 | 60 | G1RP_PS_Management_oops_do, |
mgerdin@7659 | 61 | G1RP_PS_SystemDictionary_oops_do, |
mgerdin@7659 | 62 | G1RP_PS_ClassLoaderDataGraph_oops_do, |
mgerdin@7659 | 63 | G1RP_PS_jvmti_oops_do, |
mgerdin@7659 | 64 | G1RP_PS_CodeCache_oops_do, |
mgerdin@7659 | 65 | G1RP_PS_filter_satb_buffers, |
mgerdin@7659 | 66 | G1RP_PS_refProcessor_oops_do, |
mgerdin@7659 | 67 | // Leave this one last. |
mgerdin@7659 | 68 | G1RP_PS_NumElements |
mgerdin@7659 | 69 | }; |
mgerdin@7659 | 70 | |
mgerdin@7659 | 71 | void worker_has_discovered_all_strong_classes(); |
mgerdin@7659 | 72 | void wait_until_all_strong_classes_discovered(); |
mgerdin@7659 | 73 | |
mgerdin@7659 | 74 | void process_java_roots(OopClosure* scan_non_heap_roots, |
mgerdin@7659 | 75 | CLDClosure* thread_stack_clds, |
mgerdin@7659 | 76 | CLDClosure* scan_strong_clds, |
mgerdin@7659 | 77 | CLDClosure* scan_weak_clds, |
brutisso@7660 | 78 | CodeBlobClosure* scan_strong_code, |
brutisso@7660 | 79 | G1GCPhaseTimes* phase_times, |
brutisso@7660 | 80 | uint worker_i); |
mgerdin@7659 | 81 | |
mgerdin@7659 | 82 | void process_vm_roots(OopClosure* scan_non_heap_roots, |
brutisso@7660 | 83 | OopClosure* scan_non_heap_weak_roots, |
brutisso@7660 | 84 | G1GCPhaseTimes* phase_times, |
brutisso@7660 | 85 | uint worker_i); |
mgerdin@7659 | 86 | |
mgerdin@7659 | 87 | public: |
mgerdin@7659 | 88 | G1RootProcessor(G1CollectedHeap* g1h); |
mgerdin@7659 | 89 | |
mgerdin@7659 | 90 | // Apply closures to the strongly and weakly reachable roots in the system |
mgerdin@7659 | 91 | // in a single pass. |
mgerdin@7659 | 92 | // Record and report timing measurements for sub phases using the worker_i |
mgerdin@7659 | 93 | void evacuate_roots(OopClosure* scan_non_heap_roots, |
mgerdin@7659 | 94 | OopClosure* scan_non_heap_weak_roots, |
mgerdin@7659 | 95 | CLDClosure* scan_strong_clds, |
mgerdin@7659 | 96 | CLDClosure* scan_weak_clds, |
mgerdin@7659 | 97 | bool trace_metadata, |
mgerdin@7659 | 98 | uint worker_i); |
mgerdin@7659 | 99 | |
mgerdin@7659 | 100 | // Apply oops, clds and blobs to all strongly reachable roots in the system |
mgerdin@7659 | 101 | void process_strong_roots(OopClosure* oops, |
mgerdin@7659 | 102 | CLDClosure* clds, |
mgerdin@7659 | 103 | CodeBlobClosure* blobs); |
mgerdin@7659 | 104 | |
mgerdin@7659 | 105 | // Apply oops, clds and blobs to strongly and weakly reachable roots in the system |
mgerdin@7659 | 106 | void process_all_roots(OopClosure* oops, |
mgerdin@7659 | 107 | CLDClosure* clds, |
mgerdin@7659 | 108 | CodeBlobClosure* blobs); |
mgerdin@7659 | 109 | |
mgerdin@7659 | 110 | // Apply scan_rs to all locations in the union of the remembered sets for all |
mgerdin@7659 | 111 | // regions in the collection set |
mgerdin@7659 | 112 | // (having done "set_region" to indicate the region in which the root resides), |
mgerdin@7659 | 113 | void scan_remembered_sets(G1ParPushHeapRSClosure* scan_rs, |
mgerdin@7659 | 114 | OopClosure* scan_non_heap_weak_roots, |
mgerdin@7659 | 115 | uint worker_i); |
mgerdin@7659 | 116 | |
mgerdin@7659 | 117 | // Inform the root processor about the number of worker threads |
mgerdin@7659 | 118 | void set_num_workers(int active_workers); |
mgerdin@7659 | 119 | }; |
mgerdin@7659 | 120 | |
mgerdin@7659 | 121 | #endif // SHARE_VM_GC_IMPLEMENTATION_G1_ROOTPROCESSOR_HPP |