Mon, 12 Aug 2019 18:30:40 +0300
8223147: JFR Backport
8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens
duke@435 | 1 | /* |
mikael@6198 | 2 | * Copyright (c) 1999, 2013, 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 "ci/ciKlass.hpp" |
stefank@2314 | 27 | #include "ci/ciSymbol.hpp" |
stefank@2314 | 28 | #include "ci/ciUtilities.hpp" |
stefank@2314 | 29 | #include "oops/oop.inline.hpp" |
duke@435 | 30 | |
duke@435 | 31 | // ciKlass |
duke@435 | 32 | // |
coleenp@4037 | 33 | // This class represents a Klass* in the HotSpot virtual |
duke@435 | 34 | // machine. |
duke@435 | 35 | |
duke@435 | 36 | // ------------------------------------------------------------------ |
duke@435 | 37 | // ciKlass::ciKlass |
duke@435 | 38 | ciKlass::ciKlass(KlassHandle h_k) : ciType(h_k) { |
coleenp@4037 | 39 | assert(get_Klass()->is_klass(), "wrong type"); |
duke@435 | 40 | Klass* k = get_Klass(); |
duke@435 | 41 | _layout_helper = k->layout_helper(); |
coleenp@2497 | 42 | Symbol* klass_name = k->name(); |
duke@435 | 43 | assert(klass_name != NULL, "wrong ciKlass constructor"); |
coleenp@2497 | 44 | _name = CURRENT_ENV->get_symbol(klass_name); |
duke@435 | 45 | } |
duke@435 | 46 | |
duke@435 | 47 | // ------------------------------------------------------------------ |
duke@435 | 48 | // ciKlass::ciKlass |
duke@435 | 49 | // |
duke@435 | 50 | // Nameless klass variant. |
duke@435 | 51 | ciKlass::ciKlass(KlassHandle h_k, ciSymbol* name) : ciType(h_k) { |
coleenp@4037 | 52 | assert(get_Klass()->is_klass(), "wrong type"); |
duke@435 | 53 | _name = name; |
duke@435 | 54 | _layout_helper = Klass::_lh_neutral_value; |
duke@435 | 55 | } |
duke@435 | 56 | |
duke@435 | 57 | // ------------------------------------------------------------------ |
duke@435 | 58 | // ciKlass::ciKlass |
duke@435 | 59 | // |
duke@435 | 60 | // Unloaded klass variant. |
coleenp@4037 | 61 | ciKlass::ciKlass(ciSymbol* name, BasicType bt) : ciType(bt) { |
duke@435 | 62 | _name = name; |
duke@435 | 63 | _layout_helper = Klass::_lh_neutral_value; |
duke@435 | 64 | } |
duke@435 | 65 | |
duke@435 | 66 | // ------------------------------------------------------------------ |
duke@435 | 67 | // ciKlass::is_subtype_of |
duke@435 | 68 | bool ciKlass::is_subtype_of(ciKlass* that) { |
twisti@5910 | 69 | assert(this->is_loaded(), err_msg("must be loaded: %s", this->name()->as_quoted_ascii())); |
twisti@5910 | 70 | assert(that->is_loaded(), err_msg("must be loaded: %s", that->name()->as_quoted_ascii())); |
twisti@5910 | 71 | |
duke@435 | 72 | // Check to see if the klasses are identical. |
duke@435 | 73 | if (this == that) { |
duke@435 | 74 | return true; |
duke@435 | 75 | } |
duke@435 | 76 | |
duke@435 | 77 | VM_ENTRY_MARK; |
duke@435 | 78 | Klass* this_klass = get_Klass(); |
coleenp@4037 | 79 | Klass* that_klass = that->get_Klass(); |
duke@435 | 80 | bool result = this_klass->is_subtype_of(that_klass); |
duke@435 | 81 | |
duke@435 | 82 | return result; |
duke@435 | 83 | } |
duke@435 | 84 | |
duke@435 | 85 | // ------------------------------------------------------------------ |
duke@435 | 86 | // ciKlass::is_subclass_of |
duke@435 | 87 | bool ciKlass::is_subclass_of(ciKlass* that) { |
twisti@5910 | 88 | assert(this->is_loaded(), err_msg("must be loaded: %s", this->name()->as_quoted_ascii())); |
twisti@5910 | 89 | assert(that->is_loaded(), err_msg("must be loaded: %s", that->name()->as_quoted_ascii())); |
duke@435 | 90 | |
duke@435 | 91 | VM_ENTRY_MARK; |
duke@435 | 92 | Klass* this_klass = get_Klass(); |
coleenp@4037 | 93 | Klass* that_klass = that->get_Klass(); |
duke@435 | 94 | bool result = this_klass->is_subclass_of(that_klass); |
duke@435 | 95 | |
duke@435 | 96 | return result; |
duke@435 | 97 | } |
duke@435 | 98 | |
duke@435 | 99 | // ------------------------------------------------------------------ |
duke@435 | 100 | // ciKlass::super_depth |
duke@435 | 101 | juint ciKlass::super_depth() { |
duke@435 | 102 | assert(is_loaded(), "must be loaded"); |
duke@435 | 103 | |
duke@435 | 104 | VM_ENTRY_MARK; |
duke@435 | 105 | Klass* this_klass = get_Klass(); |
duke@435 | 106 | return this_klass->super_depth(); |
duke@435 | 107 | } |
duke@435 | 108 | |
duke@435 | 109 | // ------------------------------------------------------------------ |
duke@435 | 110 | // ciKlass::super_check_offset |
duke@435 | 111 | juint ciKlass::super_check_offset() { |
duke@435 | 112 | assert(is_loaded(), "must be loaded"); |
duke@435 | 113 | |
duke@435 | 114 | VM_ENTRY_MARK; |
duke@435 | 115 | Klass* this_klass = get_Klass(); |
duke@435 | 116 | return this_klass->super_check_offset(); |
duke@435 | 117 | } |
duke@435 | 118 | |
duke@435 | 119 | // ------------------------------------------------------------------ |
duke@435 | 120 | // ciKlass::super_of_depth |
duke@435 | 121 | ciKlass* ciKlass::super_of_depth(juint i) { |
duke@435 | 122 | assert(is_loaded(), "must be loaded"); |
duke@435 | 123 | |
duke@435 | 124 | VM_ENTRY_MARK; |
duke@435 | 125 | Klass* this_klass = get_Klass(); |
coleenp@4037 | 126 | Klass* super = this_klass->primary_super_of_depth(i); |
coleenp@4037 | 127 | return (super != NULL) ? CURRENT_THREAD_ENV->get_klass(super) : NULL; |
duke@435 | 128 | } |
duke@435 | 129 | |
duke@435 | 130 | // ------------------------------------------------------------------ |
duke@435 | 131 | // ciKlass::can_be_primary_super |
duke@435 | 132 | bool ciKlass::can_be_primary_super() { |
duke@435 | 133 | assert(is_loaded(), "must be loaded"); |
duke@435 | 134 | |
duke@435 | 135 | VM_ENTRY_MARK; |
duke@435 | 136 | Klass* this_klass = get_Klass(); |
duke@435 | 137 | return this_klass->can_be_primary_super(); |
duke@435 | 138 | } |
duke@435 | 139 | |
duke@435 | 140 | // ------------------------------------------------------------------ |
duke@435 | 141 | // ciKlass::least_common_ancestor |
duke@435 | 142 | // |
duke@435 | 143 | // Get the shared parent of two klasses. |
duke@435 | 144 | // |
duke@435 | 145 | // Implementation note: this method currently goes "over the wall" |
duke@435 | 146 | // and does all of the work on the VM side. It could be rewritten |
duke@435 | 147 | // to use the super() method and do all of the work (aside from the |
duke@435 | 148 | // lazy computation of super()) in native mode. This may be |
duke@435 | 149 | // worthwhile if the compiler is repeatedly requesting the same lca |
duke@435 | 150 | // computation or possibly if most of the superklasses have already |
duke@435 | 151 | // been created as ciObjects anyway. Something to think about... |
duke@435 | 152 | ciKlass* |
duke@435 | 153 | ciKlass::least_common_ancestor(ciKlass* that) { |
duke@435 | 154 | assert(is_loaded() && that->is_loaded(), "must be loaded"); |
duke@435 | 155 | // Check to see if the klasses are identical. |
duke@435 | 156 | if (this == that) { |
duke@435 | 157 | return this; |
duke@435 | 158 | } |
duke@435 | 159 | |
duke@435 | 160 | VM_ENTRY_MARK; |
duke@435 | 161 | Klass* this_klass = get_Klass(); |
duke@435 | 162 | Klass* that_klass = that->get_Klass(); |
duke@435 | 163 | Klass* lca = this_klass->LCA(that_klass); |
duke@435 | 164 | |
duke@435 | 165 | // Many times the LCA will be either this_klass or that_klass. |
duke@435 | 166 | // Treat these as special cases. |
duke@435 | 167 | if (lca == that_klass) { |
duke@435 | 168 | return that; |
duke@435 | 169 | } |
duke@435 | 170 | if (this_klass == lca) { |
duke@435 | 171 | return this; |
duke@435 | 172 | } |
duke@435 | 173 | |
duke@435 | 174 | // Create the ciInstanceKlass for the lca. |
duke@435 | 175 | ciKlass* result = |
coleenp@4037 | 176 | CURRENT_THREAD_ENV->get_klass(lca); |
duke@435 | 177 | |
duke@435 | 178 | return result; |
duke@435 | 179 | } |
duke@435 | 180 | |
duke@435 | 181 | // ------------------------------------------------------------------ |
duke@435 | 182 | // ciKlass::find_klass |
duke@435 | 183 | // |
duke@435 | 184 | // Find a klass using this klass's class loader. |
duke@435 | 185 | ciKlass* ciKlass::find_klass(ciSymbol* klass_name) { |
duke@435 | 186 | assert(is_loaded(), "cannot find_klass through an unloaded klass"); |
duke@435 | 187 | return CURRENT_ENV->get_klass_by_name(this, |
duke@435 | 188 | klass_name, false); |
duke@435 | 189 | } |
duke@435 | 190 | |
duke@435 | 191 | // ------------------------------------------------------------------ |
duke@435 | 192 | // ciKlass::java_mirror |
jrose@1959 | 193 | // |
jrose@1959 | 194 | // Get the instance of java.lang.Class corresponding to this klass. |
jrose@1959 | 195 | // If it is an unloaded instance or array klass, return an unloaded |
jrose@1959 | 196 | // mirror object of type Class. |
duke@435 | 197 | ciInstance* ciKlass::java_mirror() { |
duke@435 | 198 | GUARDED_VM_ENTRY( |
jrose@1959 | 199 | if (!is_loaded()) |
jrose@1959 | 200 | return ciEnv::current()->get_unloaded_klass_mirror(this); |
duke@435 | 201 | oop java_mirror = get_Klass()->java_mirror(); |
coleenp@4037 | 202 | return CURRENT_ENV->get_instance(java_mirror); |
duke@435 | 203 | ) |
duke@435 | 204 | } |
duke@435 | 205 | |
duke@435 | 206 | // ------------------------------------------------------------------ |
duke@435 | 207 | // ciKlass::modifier_flags |
duke@435 | 208 | jint ciKlass::modifier_flags() { |
duke@435 | 209 | assert(is_loaded(), "not loaded"); |
duke@435 | 210 | GUARDED_VM_ENTRY( |
duke@435 | 211 | return get_Klass()->modifier_flags(); |
duke@435 | 212 | ) |
duke@435 | 213 | } |
duke@435 | 214 | |
duke@435 | 215 | // ------------------------------------------------------------------ |
duke@435 | 216 | // ciKlass::access_flags |
duke@435 | 217 | jint ciKlass::access_flags() { |
duke@435 | 218 | assert(is_loaded(), "not loaded"); |
duke@435 | 219 | GUARDED_VM_ENTRY( |
duke@435 | 220 | return get_Klass()->access_flags().as_int(); |
duke@435 | 221 | ) |
duke@435 | 222 | } |
duke@435 | 223 | |
duke@435 | 224 | // ------------------------------------------------------------------ |
duke@435 | 225 | // ciKlass::print_impl |
duke@435 | 226 | // |
duke@435 | 227 | // Implementation of the print method |
duke@435 | 228 | void ciKlass::print_impl(outputStream* st) { |
duke@435 | 229 | st->print(" name="); |
duke@435 | 230 | print_name_on(st); |
duke@435 | 231 | } |
duke@435 | 232 | |
duke@435 | 233 | // ------------------------------------------------------------------ |
duke@435 | 234 | // ciKlass::print_name |
duke@435 | 235 | // |
duke@435 | 236 | // Print the name of this klass |
duke@435 | 237 | void ciKlass::print_name_on(outputStream* st) { |
duke@435 | 238 | name()->print_symbol_on(st); |
duke@435 | 239 | } |