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 | /* |
minqi@6351 | 2 | * Copyright (c) 1997, 2014, 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 | #ifndef SHARE_VM_OOPS_OOP_HPP |
stefank@2314 | 26 | #define SHARE_VM_OOPS_OOP_HPP |
stefank@2314 | 27 | |
stefank@2314 | 28 | #include "memory/iterator.hpp" |
stefank@2314 | 29 | #include "memory/memRegion.hpp" |
stefank@2314 | 30 | #include "memory/specialized_oop_closures.hpp" |
coleenp@4037 | 31 | #include "oops/metadata.hpp" |
jprovino@4542 | 32 | #include "utilities/macros.hpp" |
stefank@2314 | 33 | #include "utilities/top.hpp" |
stefank@2314 | 34 | |
duke@435 | 35 | // oopDesc is the top baseclass for objects classes. The {name}Desc classes describe |
duke@435 | 36 | // the format of Java objects so the fields can be accessed from C++. |
duke@435 | 37 | // oopDesc is abstract. |
duke@435 | 38 | // (see oopHierarchy for complete oop class hierarchy) |
duke@435 | 39 | // |
duke@435 | 40 | // no virtual functions allowed |
duke@435 | 41 | |
duke@435 | 42 | // store into oop with store check |
stefank@2314 | 43 | template <class T> void oop_store(T* p, oop v); |
stefank@2314 | 44 | template <class T> void oop_store(volatile T* p, oop v); |
duke@435 | 45 | |
duke@435 | 46 | extern bool always_do_update_barrier; |
duke@435 | 47 | |
duke@435 | 48 | // Forward declarations. |
duke@435 | 49 | class OopClosure; |
duke@435 | 50 | class ScanClosure; |
duke@435 | 51 | class FastScanClosure; |
duke@435 | 52 | class FilteringClosure; |
duke@435 | 53 | class BarrierSet; |
duke@435 | 54 | class CMSIsAliveClosure; |
duke@435 | 55 | |
duke@435 | 56 | class PSPromotionManager; |
duke@435 | 57 | class ParCompactionManager; |
duke@435 | 58 | |
duke@435 | 59 | class oopDesc { |
duke@435 | 60 | friend class VMStructs; |
duke@435 | 61 | private: |
duke@435 | 62 | volatile markOop _mark; |
coleenp@548 | 63 | union _metadata { |
coleenp@4037 | 64 | Klass* _klass; |
hseigel@5528 | 65 | narrowKlass _compressed_klass; |
coleenp@548 | 66 | } _metadata; |
duke@435 | 67 | |
duke@435 | 68 | // Fast access to barrier set. Must be initialized. |
duke@435 | 69 | static BarrierSet* _bs; |
duke@435 | 70 | |
duke@435 | 71 | public: |
duke@435 | 72 | markOop mark() const { return _mark; } |
duke@435 | 73 | markOop* mark_addr() const { return (markOop*) &_mark; } |
duke@435 | 74 | |
duke@435 | 75 | void set_mark(volatile markOop m) { _mark = m; } |
duke@435 | 76 | |
duke@435 | 77 | void release_set_mark(markOop m); |
duke@435 | 78 | markOop cas_set_mark(markOop new_mark, markOop old_mark); |
duke@435 | 79 | |
duke@435 | 80 | // Used only to re-initialize the mark word (e.g., of promoted |
duke@435 | 81 | // objects during a GC) -- requires a valid klass pointer |
duke@435 | 82 | void init_mark(); |
duke@435 | 83 | |
coleenp@4037 | 84 | Klass* klass() const; |
coleenp@4037 | 85 | Klass* klass_or_null() const volatile; |
coleenp@4037 | 86 | Klass** klass_addr(); |
hseigel@5528 | 87 | narrowKlass* compressed_klass_addr(); |
duke@435 | 88 | |
coleenp@4037 | 89 | void set_klass(Klass* k); |
coleenp@602 | 90 | |
coleenp@602 | 91 | // For klass field compression |
coleenp@602 | 92 | int klass_gap() const; |
coleenp@602 | 93 | void set_klass_gap(int z); |
duke@435 | 94 | // For when the klass pointer is being used as a linked list "next" field. |
duke@435 | 95 | void set_klass_to_list_ptr(oop k); |
coleenp@4037 | 96 | oop list_ptr_from_klass(); |
duke@435 | 97 | |
coleenp@548 | 98 | // size of object header, aligned to platform wordSize |
coleenp@548 | 99 | static int header_size() { return sizeof(oopDesc)/HeapWordSize; } |
duke@435 | 100 | |
duke@435 | 101 | // Returns whether this is an instance of k or an instance of a subclass of k |
coleenp@4037 | 102 | bool is_a(Klass* k) const; |
duke@435 | 103 | |
duke@435 | 104 | // Returns the actual oop size of the object |
duke@435 | 105 | int size(); |
duke@435 | 106 | |
duke@435 | 107 | // Sometimes (for complicated concurrency-related reasons), it is useful |
duke@435 | 108 | // to be able to figure out the size of an object knowing its klass. |
duke@435 | 109 | int size_given_klass(Klass* klass); |
duke@435 | 110 | |
duke@435 | 111 | // type test operations (inlined in oop.inline.h) |
stefank@6976 | 112 | bool is_instance() const; |
stefank@6976 | 113 | bool is_instanceMirror() const; |
stefank@6976 | 114 | bool is_instanceClassLoader() const; |
stefank@6976 | 115 | bool is_instanceRef() const; |
stefank@6976 | 116 | bool is_array() const; |
stefank@6976 | 117 | bool is_objArray() const; |
stefank@6976 | 118 | bool is_typeArray() const; |
duke@435 | 119 | |
duke@435 | 120 | private: |
duke@435 | 121 | // field addresses in oop |
duke@435 | 122 | void* field_base(int offset) const; |
duke@435 | 123 | |
duke@435 | 124 | jbyte* byte_field_addr(int offset) const; |
duke@435 | 125 | jchar* char_field_addr(int offset) const; |
duke@435 | 126 | jboolean* bool_field_addr(int offset) const; |
duke@435 | 127 | jint* int_field_addr(int offset) const; |
duke@435 | 128 | jshort* short_field_addr(int offset) const; |
duke@435 | 129 | jlong* long_field_addr(int offset) const; |
duke@435 | 130 | jfloat* float_field_addr(int offset) const; |
duke@435 | 131 | jdouble* double_field_addr(int offset) const; |
coleenp@4037 | 132 | Metadata** metadata_field_addr(int offset) const; |
duke@435 | 133 | |
duke@435 | 134 | public: |
coleenp@548 | 135 | // Need this as public for garbage collection. |
coleenp@548 | 136 | template <class T> T* obj_field_addr(int offset) const; |
duke@435 | 137 | |
coleenp@4037 | 138 | // Needed for javaClasses |
coleenp@4037 | 139 | address* address_field_addr(int offset) const; |
coleenp@4037 | 140 | |
coleenp@548 | 141 | static bool is_null(oop obj); |
coleenp@548 | 142 | static bool is_null(narrowOop obj); |
coleenp@4037 | 143 | static bool is_null(Klass* obj); |
coleenp@548 | 144 | |
coleenp@548 | 145 | // Decode an oop pointer from a narrowOop if compressed. |
coleenp@548 | 146 | // These are overloaded for oop and narrowOop as are the other functions |
coleenp@548 | 147 | // below so that they can be called in template functions. |
coleenp@548 | 148 | static oop decode_heap_oop_not_null(oop v); |
coleenp@548 | 149 | static oop decode_heap_oop_not_null(narrowOop v); |
coleenp@548 | 150 | static oop decode_heap_oop(oop v); |
coleenp@548 | 151 | static oop decode_heap_oop(narrowOop v); |
coleenp@548 | 152 | |
coleenp@548 | 153 | // Encode an oop pointer to a narrow oop. The or_null versions accept |
coleenp@548 | 154 | // null oop pointer, others do not in order to eliminate the |
coleenp@548 | 155 | // null checking branches. |
coleenp@548 | 156 | static narrowOop encode_heap_oop_not_null(oop v); |
coleenp@548 | 157 | static narrowOop encode_heap_oop(oop v); |
coleenp@548 | 158 | |
coleenp@548 | 159 | // Load an oop out of the Java heap |
coleenp@548 | 160 | static narrowOop load_heap_oop(narrowOop* p); |
coleenp@548 | 161 | static oop load_heap_oop(oop* p); |
coleenp@548 | 162 | |
coleenp@548 | 163 | // Load an oop out of Java heap and decode it to an uncompressed oop. |
coleenp@548 | 164 | static oop load_decode_heap_oop_not_null(narrowOop* p); |
coleenp@548 | 165 | static oop load_decode_heap_oop_not_null(oop* p); |
coleenp@548 | 166 | static oop load_decode_heap_oop(narrowOop* p); |
coleenp@548 | 167 | static oop load_decode_heap_oop(oop* p); |
coleenp@548 | 168 | |
coleenp@548 | 169 | // Store an oop into the heap. |
coleenp@548 | 170 | static void store_heap_oop(narrowOop* p, narrowOop v); |
coleenp@548 | 171 | static void store_heap_oop(oop* p, oop v); |
coleenp@548 | 172 | |
coleenp@548 | 173 | // Encode oop if UseCompressedOops and store into the heap. |
coleenp@548 | 174 | static void encode_store_heap_oop_not_null(narrowOop* p, oop v); |
coleenp@548 | 175 | static void encode_store_heap_oop_not_null(oop* p, oop v); |
coleenp@548 | 176 | static void encode_store_heap_oop(narrowOop* p, oop v); |
coleenp@548 | 177 | static void encode_store_heap_oop(oop* p, oop v); |
coleenp@548 | 178 | |
coleenp@548 | 179 | static void release_store_heap_oop(volatile narrowOop* p, narrowOop v); |
coleenp@548 | 180 | static void release_store_heap_oop(volatile oop* p, oop v); |
coleenp@548 | 181 | |
coleenp@548 | 182 | static void release_encode_store_heap_oop_not_null(volatile narrowOop* p, oop v); |
coleenp@548 | 183 | static void release_encode_store_heap_oop_not_null(volatile oop* p, oop v); |
coleenp@548 | 184 | static void release_encode_store_heap_oop(volatile narrowOop* p, oop v); |
coleenp@548 | 185 | static void release_encode_store_heap_oop(volatile oop* p, oop v); |
coleenp@548 | 186 | |
coleenp@548 | 187 | static oop atomic_exchange_oop(oop exchange_value, volatile HeapWord *dest); |
coleenp@548 | 188 | static oop atomic_compare_exchange_oop(oop exchange_value, |
coleenp@548 | 189 | volatile HeapWord *dest, |
coleenp@4037 | 190 | oop compare_value, |
coleenp@4037 | 191 | bool prebarrier = false); |
coleenp@4037 | 192 | |
coleenp@548 | 193 | // Access to fields in a instanceOop through these methods. |
duke@435 | 194 | oop obj_field(int offset) const; |
twisti@3131 | 195 | volatile oop obj_field_volatile(int offset) const; |
duke@435 | 196 | void obj_field_put(int offset, oop value); |
twisti@3131 | 197 | void obj_field_put_raw(int offset, oop value); |
twisti@3131 | 198 | void obj_field_put_volatile(int offset, oop value); |
duke@435 | 199 | |
coleenp@4037 | 200 | Metadata* metadata_field(int offset) const; |
coleenp@4037 | 201 | void metadata_field_put(int offset, Metadata* value); |
coleenp@4037 | 202 | |
duke@435 | 203 | jbyte byte_field(int offset) const; |
duke@435 | 204 | void byte_field_put(int offset, jbyte contents); |
duke@435 | 205 | |
duke@435 | 206 | jchar char_field(int offset) const; |
duke@435 | 207 | void char_field_put(int offset, jchar contents); |
duke@435 | 208 | |
duke@435 | 209 | jboolean bool_field(int offset) const; |
duke@435 | 210 | void bool_field_put(int offset, jboolean contents); |
duke@435 | 211 | |
duke@435 | 212 | jint int_field(int offset) const; |
duke@435 | 213 | void int_field_put(int offset, jint contents); |
duke@435 | 214 | |
duke@435 | 215 | jshort short_field(int offset) const; |
duke@435 | 216 | void short_field_put(int offset, jshort contents); |
duke@435 | 217 | |
duke@435 | 218 | jlong long_field(int offset) const; |
duke@435 | 219 | void long_field_put(int offset, jlong contents); |
duke@435 | 220 | |
duke@435 | 221 | jfloat float_field(int offset) const; |
duke@435 | 222 | void float_field_put(int offset, jfloat contents); |
duke@435 | 223 | |
duke@435 | 224 | jdouble double_field(int offset) const; |
duke@435 | 225 | void double_field_put(int offset, jdouble contents); |
duke@435 | 226 | |
coleenp@548 | 227 | address address_field(int offset) const; |
coleenp@548 | 228 | void address_field_put(int offset, address contents); |
coleenp@548 | 229 | |
duke@435 | 230 | oop obj_field_acquire(int offset) const; |
duke@435 | 231 | void release_obj_field_put(int offset, oop value); |
duke@435 | 232 | |
duke@435 | 233 | jbyte byte_field_acquire(int offset) const; |
duke@435 | 234 | void release_byte_field_put(int offset, jbyte contents); |
duke@435 | 235 | |
duke@435 | 236 | jchar char_field_acquire(int offset) const; |
duke@435 | 237 | void release_char_field_put(int offset, jchar contents); |
duke@435 | 238 | |
duke@435 | 239 | jboolean bool_field_acquire(int offset) const; |
duke@435 | 240 | void release_bool_field_put(int offset, jboolean contents); |
duke@435 | 241 | |
duke@435 | 242 | jint int_field_acquire(int offset) const; |
duke@435 | 243 | void release_int_field_put(int offset, jint contents); |
duke@435 | 244 | |
duke@435 | 245 | jshort short_field_acquire(int offset) const; |
duke@435 | 246 | void release_short_field_put(int offset, jshort contents); |
duke@435 | 247 | |
duke@435 | 248 | jlong long_field_acquire(int offset) const; |
duke@435 | 249 | void release_long_field_put(int offset, jlong contents); |
duke@435 | 250 | |
duke@435 | 251 | jfloat float_field_acquire(int offset) const; |
duke@435 | 252 | void release_float_field_put(int offset, jfloat contents); |
duke@435 | 253 | |
duke@435 | 254 | jdouble double_field_acquire(int offset) const; |
duke@435 | 255 | void release_double_field_put(int offset, jdouble contents); |
duke@435 | 256 | |
jrose@1145 | 257 | address address_field_acquire(int offset) const; |
jrose@1145 | 258 | void release_address_field_put(int offset, address contents); |
jrose@1145 | 259 | |
duke@435 | 260 | // printing functions for VM debugging |
duke@435 | 261 | void print_on(outputStream* st) const; // First level print |
duke@435 | 262 | void print_value_on(outputStream* st) const; // Second level print. |
duke@435 | 263 | void print_address_on(outputStream* st) const; // Address printing |
duke@435 | 264 | |
duke@435 | 265 | // printing on default output stream |
duke@435 | 266 | void print(); |
duke@435 | 267 | void print_value(); |
duke@435 | 268 | void print_address(); |
duke@435 | 269 | |
duke@435 | 270 | // return the print strings |
duke@435 | 271 | char* print_string(); |
duke@435 | 272 | char* print_value_string(); |
duke@435 | 273 | |
duke@435 | 274 | // verification operations |
duke@435 | 275 | void verify_on(outputStream* st); |
duke@435 | 276 | void verify(); |
duke@435 | 277 | |
duke@435 | 278 | // locking operations |
duke@435 | 279 | bool is_locked() const; |
duke@435 | 280 | bool is_unlocked() const; |
duke@435 | 281 | bool has_bias_pattern() const; |
duke@435 | 282 | |
duke@435 | 283 | // asserts |
duke@435 | 284 | bool is_oop(bool ignore_mark_word = false) const; |
duke@435 | 285 | bool is_oop_or_null(bool ignore_mark_word = false) const; |
duke@435 | 286 | #ifndef PRODUCT |
duke@435 | 287 | bool is_unlocked_oop() const; |
duke@435 | 288 | #endif |
duke@435 | 289 | |
duke@435 | 290 | // garbage collection |
duke@435 | 291 | bool is_gc_marked() const; |
duke@435 | 292 | // Apply "MarkSweep::mark_and_push" to (the address of) every non-NULL |
duke@435 | 293 | // reference field in "this". |
coleenp@548 | 294 | void follow_contents(void); |
duke@435 | 295 | |
jprovino@4542 | 296 | #if INCLUDE_ALL_GCS |
duke@435 | 297 | // Parallel Scavenge |
duke@435 | 298 | void push_contents(PSPromotionManager* pm); |
duke@435 | 299 | |
duke@435 | 300 | // Parallel Old |
duke@435 | 301 | void update_contents(ParCompactionManager* cm); |
duke@435 | 302 | |
duke@435 | 303 | void follow_contents(ParCompactionManager* cm); |
jprovino@4542 | 304 | #endif // INCLUDE_ALL_GCS |
duke@435 | 305 | |
jrose@1424 | 306 | bool is_scavengable() const; |
duke@435 | 307 | |
duke@435 | 308 | // Forward pointer operations for scavenge |
duke@435 | 309 | bool is_forwarded() const; |
duke@435 | 310 | |
duke@435 | 311 | void forward_to(oop p); |
duke@435 | 312 | bool cas_forward_to(oop p, markOop compare); |
duke@435 | 313 | |
jprovino@4542 | 314 | #if INCLUDE_ALL_GCS |
duke@435 | 315 | // Like "forward_to", but inserts the forwarding pointer atomically. |
duke@435 | 316 | // Exactly one thread succeeds in inserting the forwarding pointer, and |
duke@435 | 317 | // this call returns "NULL" for that thread; any other thread has the |
duke@435 | 318 | // value of the forwarding pointer returned and does not modify "this". |
duke@435 | 319 | oop forward_to_atomic(oop p); |
jprovino@4542 | 320 | #endif // INCLUDE_ALL_GCS |
duke@435 | 321 | |
duke@435 | 322 | oop forwardee() const; |
duke@435 | 323 | |
duke@435 | 324 | // Age of object during scavenge |
jwilhelm@4129 | 325 | uint age() const; |
duke@435 | 326 | void incr_age(); |
duke@435 | 327 | |
duke@435 | 328 | // Adjust all pointers in this object to point at it's forwarded location and |
duke@435 | 329 | // return the size of this oop. This is used by the MarkSweep collector. |
duke@435 | 330 | int adjust_pointers(); |
duke@435 | 331 | |
duke@435 | 332 | // mark-sweep support |
duke@435 | 333 | void follow_body(int begin, int end); |
duke@435 | 334 | |
duke@435 | 335 | // Fast access to barrier set |
duke@435 | 336 | static BarrierSet* bs() { return _bs; } |
duke@435 | 337 | static void set_bs(BarrierSet* bs) { _bs = bs; } |
duke@435 | 338 | |
duke@435 | 339 | // iterators, returns size of object |
ysr@777 | 340 | #define OOP_ITERATE_DECL(OopClosureType, nv_suffix) \ |
duke@435 | 341 | int oop_iterate(OopClosureType* blk); \ |
duke@435 | 342 | int oop_iterate(OopClosureType* blk, MemRegion mr); // Only in mr. |
duke@435 | 343 | |
duke@435 | 344 | ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_ITERATE_DECL) |
ysr@777 | 345 | ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_ITERATE_DECL) |
ysr@777 | 346 | |
jprovino@4542 | 347 | #if INCLUDE_ALL_GCS |
ysr@777 | 348 | |
ysr@777 | 349 | #define OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \ |
ysr@777 | 350 | int oop_iterate_backwards(OopClosureType* blk); |
ysr@777 | 351 | |
ysr@777 | 352 | ALL_OOP_OOP_ITERATE_CLOSURES_1(OOP_ITERATE_BACKWARDS_DECL) |
ysr@777 | 353 | ALL_OOP_OOP_ITERATE_CLOSURES_2(OOP_ITERATE_BACKWARDS_DECL) |
ysr@777 | 354 | #endif |
duke@435 | 355 | |
coleenp@4037 | 356 | int oop_iterate_no_header(OopClosure* bk); |
coleenp@4037 | 357 | int oop_iterate_no_header(OopClosure* bk, MemRegion mr); |
duke@435 | 358 | |
duke@435 | 359 | // identity hash; returns the identity hash key (computes it if necessary) |
duke@435 | 360 | // NOTE with the introduction of UseBiasedLocking that identity_hash() might reach a |
duke@435 | 361 | // safepoint if called on a biased object. Calling code must be aware of that. |
duke@435 | 362 | intptr_t identity_hash(); |
duke@435 | 363 | intptr_t slow_identity_hash(); |
duke@435 | 364 | |
coleenp@4037 | 365 | // Alternate hashing code if string table is rehashed |
minqi@6351 | 366 | unsigned int new_hash(juint seed); |
coleenp@4037 | 367 | |
duke@435 | 368 | // marks are forwarded to stack when object is locked |
duke@435 | 369 | bool has_displaced_mark() const; |
duke@435 | 370 | markOop displaced_mark() const; |
duke@435 | 371 | void set_displaced_mark(markOop m); |
duke@435 | 372 | |
duke@435 | 373 | // for code generation |
duke@435 | 374 | static int mark_offset_in_bytes() { return offset_of(oopDesc, _mark); } |
coleenp@548 | 375 | static int klass_offset_in_bytes() { return offset_of(oopDesc, _metadata._klass); } |
coleenp@548 | 376 | static int klass_gap_offset_in_bytes(); |
duke@435 | 377 | }; |
stefank@2314 | 378 | |
stefank@2314 | 379 | #endif // SHARE_VM_OOPS_OOP_HPP |