Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/runtime/unhandledOops.cpp@d2a62e0f25eb (annotated)
src/share/vm/runtime/unhandledOops.cpp
Thu, 28 Jun 2012 17:03:16 -0400
- author
- zgu
- date
- Thu, 28 Jun 2012 17:03:16 -0400
- changeset 3900
- d2a62e0f25eb
- parent 2314
- f95d63e2154a
- child 4037
- da91efe96a93
- permissions
- -rw-r--r--
6995781: Native Memory Tracking (Phase 1)
7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain
| duke@435 | 1 | /* |
| stefank@2314 | 2 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| stefank@2314 | 25 | #include "precompiled.hpp" |
| stefank@2314 | 26 | #include "gc_interface/collectedHeap.hpp" |
| stefank@2314 | 27 | #include "memory/gcLocker.inline.hpp" |
| stefank@2314 | 28 | #include "memory/universe.hpp" |
| stefank@2314 | 29 | #include "oops/oop.inline.hpp" |
| stefank@2314 | 30 | #include "runtime/thread.hpp" |
| stefank@2314 | 31 | #include "runtime/unhandledOops.hpp" |
| stefank@2314 | 32 | #include "utilities/globalDefinitions.hpp" |
| duke@435 | 33 | |
| duke@435 | 34 | #ifdef CHECK_UNHANDLED_OOPS |
| duke@435 | 35 | const int free_list_size = 256; |
| duke@435 | 36 | |
| duke@435 | 37 | |
| duke@435 | 38 | UnhandledOops::UnhandledOops(Thread* thread) { |
| duke@435 | 39 | _thread = thread; |
| zgu@3900 | 40 | _oop_list = new (ResourceObj::C_HEAP, mtInternal) |
| duke@435 | 41 | GrowableArray<UnhandledOopEntry>(free_list_size, true); |
| duke@435 | 42 | _level = 0; |
| duke@435 | 43 | } |
| duke@435 | 44 | |
| duke@435 | 45 | UnhandledOops::~UnhandledOops() { |
| duke@435 | 46 | delete _oop_list; |
| duke@435 | 47 | } |
| duke@435 | 48 | |
| duke@435 | 49 | |
| duke@435 | 50 | void UnhandledOops::dump_oops(UnhandledOops *list) { |
| duke@435 | 51 | for (int k = 0; k < list->_oop_list->length(); k++) { |
| duke@435 | 52 | UnhandledOopEntry entry = list->_oop_list->at(k); |
| duke@435 | 53 | tty->print(" " INTPTR_FORMAT, entry._oop_ptr); |
| duke@435 | 54 | } |
| duke@435 | 55 | tty->cr(); |
| duke@435 | 56 | } |
| duke@435 | 57 | |
| duke@435 | 58 | // For debugging unhandled oop detector _in the debugger_ |
| duke@435 | 59 | // You don't want to turn it on in compiled code here. |
| duke@435 | 60 | static bool unhandled_oop_print=0; |
| duke@435 | 61 | |
| duke@435 | 62 | void UnhandledOops::register_unhandled_oop(oop* op, address pc) { |
| duke@435 | 63 | if (!_thread->is_in_stack((address)op)) |
| duke@435 | 64 | return; |
| duke@435 | 65 | |
| duke@435 | 66 | _level ++; |
| duke@435 | 67 | if (unhandled_oop_print) { |
| duke@435 | 68 | for (int i=0; i<_level; i++) tty->print(" "); |
| duke@435 | 69 | tty->print_cr("r " INTPTR_FORMAT, op); |
| duke@435 | 70 | } |
| duke@435 | 71 | UnhandledOopEntry entry(op, pc); |
| duke@435 | 72 | _oop_list->push(entry); |
| duke@435 | 73 | } |
| duke@435 | 74 | |
| duke@435 | 75 | |
| duke@435 | 76 | bool match_oop_entry(void *op, UnhandledOopEntry e) { |
| duke@435 | 77 | return (e.oop_ptr() == op); |
| duke@435 | 78 | } |
| duke@435 | 79 | |
| duke@435 | 80 | // Mark unhandled oop as okay for GC - the containing struct has an oops_do and |
| duke@435 | 81 | // for some reason the oop has to be on the stack. |
| duke@435 | 82 | // May not be called for the current thread, as in the case of |
| duke@435 | 83 | // VM_GetOrSetLocal in jvmti. |
| duke@435 | 84 | void UnhandledOops::allow_unhandled_oop(oop* op) { |
| duke@435 | 85 | assert (CheckUnhandledOops, "should only be called with checking option"); |
| duke@435 | 86 | |
| duke@435 | 87 | int i = _oop_list->find_at_end(op, match_oop_entry); |
| duke@435 | 88 | assert(i!=-1, "safe for gc oop not in unhandled_oop_list"); |
| duke@435 | 89 | |
| duke@435 | 90 | UnhandledOopEntry entry = _oop_list->at(i); |
| duke@435 | 91 | assert(!entry._ok_for_gc, "duplicate entry"); |
| duke@435 | 92 | entry._ok_for_gc = true; |
| duke@435 | 93 | _oop_list->at_put(i, entry); |
| duke@435 | 94 | } |
| duke@435 | 95 | |
| duke@435 | 96 | |
| duke@435 | 97 | // Called by the oop destructor to remove unhandled oop from the thread's |
| duke@435 | 98 | // oop list. All oops given are assumed to be on the list. If not, |
| duke@435 | 99 | // there's a bug in the unhandled oop detector. |
| duke@435 | 100 | void UnhandledOops::unregister_unhandled_oop(oop* op) { |
| duke@435 | 101 | if (!_thread->is_in_stack((address)op)) return; |
| duke@435 | 102 | |
| duke@435 | 103 | _level --; |
| duke@435 | 104 | if (unhandled_oop_print) { |
| duke@435 | 105 | for (int i=0; i<_level; i++) tty->print(" "); |
| duke@435 | 106 | tty->print_cr("u "INTPTR_FORMAT, op); |
| duke@435 | 107 | } |
| duke@435 | 108 | |
| duke@435 | 109 | int i = _oop_list->find_at_end(op, match_oop_entry); |
| duke@435 | 110 | assert(i!=-1, "oop not in unhandled_oop_list"); |
| duke@435 | 111 | _oop_list->remove_at(i); |
| duke@435 | 112 | } |
| duke@435 | 113 | |
| duke@435 | 114 | void UnhandledOops::clear_unhandled_oops() { |
| duke@435 | 115 | assert (CheckUnhandledOops, "should only be called with checking option"); |
| duke@435 | 116 | if (_thread->is_gc_locked_out()) { |
| duke@435 | 117 | return; |
| duke@435 | 118 | } |
| duke@435 | 119 | for (int k = 0; k < _oop_list->length(); k++) { |
| duke@435 | 120 | UnhandledOopEntry entry = _oop_list->at(k); |
| duke@435 | 121 | // If an entry is on the unhandled oop list but isn't on the stack |
| duke@435 | 122 | // anymore, it must not have gotten unregistered properly and it's a bug |
| duke@435 | 123 | // in the unhandled oop generator. |
| duke@435 | 124 | if(!_thread->is_in_stack((address)entry._oop_ptr)) { |
| duke@435 | 125 | tty->print_cr("oop_ptr is " INTPTR_FORMAT, (address)entry._oop_ptr); |
| duke@435 | 126 | tty->print_cr("thread is " INTPTR_FORMAT " from pc " INTPTR_FORMAT, |
| duke@435 | 127 | (address)_thread, (address)entry._pc); |
| duke@435 | 128 | assert(false, "heap is corrupted by the unhandled oop detector"); |
| duke@435 | 129 | } |
| duke@435 | 130 | // Set unhandled oops to a pattern that will crash distinctively |
| duke@435 | 131 | if (!entry._ok_for_gc) *(intptr_t*)(entry._oop_ptr) = BAD_OOP_ADDR; |
| duke@435 | 132 | } |
| duke@435 | 133 | } |
| duke@435 | 134 | #endif // CHECK_UNHANDLED_OOPS |
