Tue, 07 Jul 2009 14:23:00 -0400
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
Summary: Changing the behavior of -XX:+PrintHeapAtGC for G1 from printing lengthy, per-region information to instead printing a concise summary.
Reviewed-by: ysr, apetrusenko, jcoomes
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1997-2005 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 | class StackValue : public ResourceObj { |
duke@435 | 26 | private: |
duke@435 | 27 | BasicType _type; |
duke@435 | 28 | intptr_t _i; // Blank java stack slot value |
duke@435 | 29 | Handle _o; // Java stack slot value interpreted as a Handle |
duke@435 | 30 | public: |
duke@435 | 31 | |
duke@435 | 32 | StackValue(intptr_t value) { |
duke@435 | 33 | _type = T_INT; |
duke@435 | 34 | _i = value; |
duke@435 | 35 | } |
duke@435 | 36 | |
kvn@1253 | 37 | StackValue(Handle value, intptr_t scalar_replaced = 0) { |
duke@435 | 38 | _type = T_OBJECT; |
kvn@1253 | 39 | _i = scalar_replaced; |
duke@435 | 40 | _o = value; |
kvn@1253 | 41 | assert(_i == 0 || _o.is_null(), "not null object should not be marked as scalar replaced"); |
duke@435 | 42 | } |
duke@435 | 43 | |
duke@435 | 44 | StackValue() { |
duke@435 | 45 | _type = T_CONFLICT; |
duke@435 | 46 | _i = 0; |
duke@435 | 47 | } |
duke@435 | 48 | |
duke@435 | 49 | // Only used during deopt- preserve object type. |
duke@435 | 50 | StackValue(intptr_t o, BasicType t) { |
duke@435 | 51 | assert(t == T_OBJECT, "should not be used"); |
duke@435 | 52 | _type = t; |
duke@435 | 53 | _i = o; |
duke@435 | 54 | } |
duke@435 | 55 | |
duke@435 | 56 | Handle get_obj() const { |
duke@435 | 57 | assert(type() == T_OBJECT, "type check"); |
duke@435 | 58 | return _o; |
duke@435 | 59 | } |
duke@435 | 60 | |
kvn@1253 | 61 | bool obj_is_scalar_replaced() const { |
kvn@1253 | 62 | assert(type() == T_OBJECT, "type check"); |
kvn@1253 | 63 | return _i != 0; |
kvn@1253 | 64 | } |
kvn@1253 | 65 | |
duke@435 | 66 | void set_obj(Handle value) { |
duke@435 | 67 | assert(type() == T_OBJECT, "type check"); |
duke@435 | 68 | _o = value; |
duke@435 | 69 | } |
duke@435 | 70 | |
duke@435 | 71 | intptr_t get_int() const { |
duke@435 | 72 | assert(type() == T_INT, "type check"); |
duke@435 | 73 | return _i; |
duke@435 | 74 | } |
duke@435 | 75 | |
duke@435 | 76 | // For special case in deopt. |
duke@435 | 77 | intptr_t get_int(BasicType t) const { |
duke@435 | 78 | assert(t == T_OBJECT && type() == T_OBJECT, "type check"); |
duke@435 | 79 | return _i; |
duke@435 | 80 | } |
duke@435 | 81 | |
duke@435 | 82 | void set_int(intptr_t value) { |
duke@435 | 83 | assert(type() == T_INT, "type check"); |
duke@435 | 84 | _i = value; |
duke@435 | 85 | } |
duke@435 | 86 | |
duke@435 | 87 | BasicType type() const { return _type; } |
duke@435 | 88 | |
duke@435 | 89 | bool equal(StackValue *value) { |
duke@435 | 90 | if (_type != value->_type) return false; |
duke@435 | 91 | if (_type == T_OBJECT) |
duke@435 | 92 | return (_o == value->_o); |
duke@435 | 93 | else { |
duke@435 | 94 | assert(_type == T_INT, "sanity check"); |
duke@435 | 95 | // [phh] compare only low addressed portions of intptr_t slots |
duke@435 | 96 | return (*(int *)&_i == *(int *)&value->_i); |
duke@435 | 97 | } |
duke@435 | 98 | } |
duke@435 | 99 | |
duke@435 | 100 | static StackValue* create_stack_value(const frame* fr, const RegisterMap* reg_map, ScopeValue* sv); |
duke@435 | 101 | static BasicLock* resolve_monitor_lock(const frame* fr, Location location); |
duke@435 | 102 | |
duke@435 | 103 | #ifndef PRODUCT |
duke@435 | 104 | public: |
duke@435 | 105 | // Printing |
duke@435 | 106 | void print_on(outputStream* st) const; |
duke@435 | 107 | #endif |
duke@435 | 108 | }; |