Sun, 02 Mar 2008 16:10:12 -0800
6557851: CMS: ergonomics defaults are not set with FLAG_SET_ERGO
Summary: Default values set by cms ergonomics are set with FLAG_SET_DEFAULT so down stream the values look like the default values and affect how later parameters are set. Set these values with FLAG_SET_ERGO instead and adjust how later parameters are interpreted.
Reviewed-by: iveresov, apetrusenko, pbk, ysr
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 2005 Sun Microsystems, Inc. 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 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | # include "incls/_precompiled.incl" |
duke@435 | 26 | # include "incls/_unhandledOops.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | #ifdef CHECK_UNHANDLED_OOPS |
duke@435 | 29 | const int free_list_size = 256; |
duke@435 | 30 | |
duke@435 | 31 | |
duke@435 | 32 | UnhandledOops::UnhandledOops(Thread* thread) { |
duke@435 | 33 | _thread = thread; |
duke@435 | 34 | _oop_list = new (ResourceObj::C_HEAP) |
duke@435 | 35 | GrowableArray<UnhandledOopEntry>(free_list_size, true); |
duke@435 | 36 | _level = 0; |
duke@435 | 37 | } |
duke@435 | 38 | |
duke@435 | 39 | UnhandledOops::~UnhandledOops() { |
duke@435 | 40 | delete _oop_list; |
duke@435 | 41 | } |
duke@435 | 42 | |
duke@435 | 43 | |
duke@435 | 44 | void UnhandledOops::dump_oops(UnhandledOops *list) { |
duke@435 | 45 | for (int k = 0; k < list->_oop_list->length(); k++) { |
duke@435 | 46 | UnhandledOopEntry entry = list->_oop_list->at(k); |
duke@435 | 47 | tty->print(" " INTPTR_FORMAT, entry._oop_ptr); |
duke@435 | 48 | } |
duke@435 | 49 | tty->cr(); |
duke@435 | 50 | } |
duke@435 | 51 | |
duke@435 | 52 | // For debugging unhandled oop detector _in the debugger_ |
duke@435 | 53 | // You don't want to turn it on in compiled code here. |
duke@435 | 54 | static bool unhandled_oop_print=0; |
duke@435 | 55 | |
duke@435 | 56 | void UnhandledOops::register_unhandled_oop(oop* op, address pc) { |
duke@435 | 57 | if (!_thread->is_in_stack((address)op)) |
duke@435 | 58 | return; |
duke@435 | 59 | |
duke@435 | 60 | _level ++; |
duke@435 | 61 | if (unhandled_oop_print) { |
duke@435 | 62 | for (int i=0; i<_level; i++) tty->print(" "); |
duke@435 | 63 | tty->print_cr("r " INTPTR_FORMAT, op); |
duke@435 | 64 | } |
duke@435 | 65 | UnhandledOopEntry entry(op, pc); |
duke@435 | 66 | _oop_list->push(entry); |
duke@435 | 67 | } |
duke@435 | 68 | |
duke@435 | 69 | |
duke@435 | 70 | bool match_oop_entry(void *op, UnhandledOopEntry e) { |
duke@435 | 71 | return (e.oop_ptr() == op); |
duke@435 | 72 | } |
duke@435 | 73 | |
duke@435 | 74 | // Mark unhandled oop as okay for GC - the containing struct has an oops_do and |
duke@435 | 75 | // for some reason the oop has to be on the stack. |
duke@435 | 76 | // May not be called for the current thread, as in the case of |
duke@435 | 77 | // VM_GetOrSetLocal in jvmti. |
duke@435 | 78 | void UnhandledOops::allow_unhandled_oop(oop* op) { |
duke@435 | 79 | assert (CheckUnhandledOops, "should only be called with checking option"); |
duke@435 | 80 | |
duke@435 | 81 | int i = _oop_list->find_at_end(op, match_oop_entry); |
duke@435 | 82 | assert(i!=-1, "safe for gc oop not in unhandled_oop_list"); |
duke@435 | 83 | |
duke@435 | 84 | UnhandledOopEntry entry = _oop_list->at(i); |
duke@435 | 85 | assert(!entry._ok_for_gc, "duplicate entry"); |
duke@435 | 86 | entry._ok_for_gc = true; |
duke@435 | 87 | _oop_list->at_put(i, entry); |
duke@435 | 88 | } |
duke@435 | 89 | |
duke@435 | 90 | |
duke@435 | 91 | // Called by the oop destructor to remove unhandled oop from the thread's |
duke@435 | 92 | // oop list. All oops given are assumed to be on the list. If not, |
duke@435 | 93 | // there's a bug in the unhandled oop detector. |
duke@435 | 94 | void UnhandledOops::unregister_unhandled_oop(oop* op) { |
duke@435 | 95 | if (!_thread->is_in_stack((address)op)) return; |
duke@435 | 96 | |
duke@435 | 97 | _level --; |
duke@435 | 98 | if (unhandled_oop_print) { |
duke@435 | 99 | for (int i=0; i<_level; i++) tty->print(" "); |
duke@435 | 100 | tty->print_cr("u "INTPTR_FORMAT, op); |
duke@435 | 101 | } |
duke@435 | 102 | |
duke@435 | 103 | int i = _oop_list->find_at_end(op, match_oop_entry); |
duke@435 | 104 | assert(i!=-1, "oop not in unhandled_oop_list"); |
duke@435 | 105 | _oop_list->remove_at(i); |
duke@435 | 106 | } |
duke@435 | 107 | |
duke@435 | 108 | void UnhandledOops::clear_unhandled_oops() { |
duke@435 | 109 | assert (CheckUnhandledOops, "should only be called with checking option"); |
duke@435 | 110 | if (_thread->is_gc_locked_out()) { |
duke@435 | 111 | return; |
duke@435 | 112 | } |
duke@435 | 113 | for (int k = 0; k < _oop_list->length(); k++) { |
duke@435 | 114 | UnhandledOopEntry entry = _oop_list->at(k); |
duke@435 | 115 | // If an entry is on the unhandled oop list but isn't on the stack |
duke@435 | 116 | // anymore, it must not have gotten unregistered properly and it's a bug |
duke@435 | 117 | // in the unhandled oop generator. |
duke@435 | 118 | if(!_thread->is_in_stack((address)entry._oop_ptr)) { |
duke@435 | 119 | tty->print_cr("oop_ptr is " INTPTR_FORMAT, (address)entry._oop_ptr); |
duke@435 | 120 | tty->print_cr("thread is " INTPTR_FORMAT " from pc " INTPTR_FORMAT, |
duke@435 | 121 | (address)_thread, (address)entry._pc); |
duke@435 | 122 | assert(false, "heap is corrupted by the unhandled oop detector"); |
duke@435 | 123 | } |
duke@435 | 124 | // Set unhandled oops to a pattern that will crash distinctively |
duke@435 | 125 | if (!entry._ok_for_gc) *(intptr_t*)(entry._oop_ptr) = BAD_OOP_ADDR; |
duke@435 | 126 | } |
duke@435 | 127 | } |
duke@435 | 128 | #endif // CHECK_UNHANDLED_OOPS |