author | coleenp |
Tue, 28 Aug 2018 18:17:01 -0400 | |
changeset 51554 | 5b0d86499960 |
parent 51530 | 1f0b605bdc28 |
child 52033 | d6aa9ea2405d |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef SHARE_VM_MEMORY_UNIVERSE_HPP |
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#define SHARE_VM_MEMORY_UNIVERSE_HPP |
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#include "oops/array.hpp" |
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#include "runtime/handles.hpp" |
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#include "utilities/growableArray.hpp" |
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// Universe is a name space holding known system classes and objects in the VM. |
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// |
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// Loaded classes are accessible through the SystemDictionary. |
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// |
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// The object heap is allocated and accessed through Universe, and various allocation |
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// support is provided. Allocation by the interpreter and compiled code is done inline |
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// and bails out to Scavenge::invoke_and_allocate. |
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class CollectedHeap; |
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class DeferredObjAllocEvent; |
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// A helper class for caching a Method* when the user of the cache |
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// only cares about the latest version of the Method*. This cache safely |
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// interacts with the RedefineClasses API. |
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|
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class LatestMethodCache : public CHeapObj<mtClass> { |
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// We save the Klass* and the idnum of Method* in order to get |
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// the current cached Method*. |
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private: |
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Klass* _klass; |
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int _method_idnum; |
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public: |
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LatestMethodCache() { _klass = NULL; _method_idnum = -1; } |
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~LatestMethodCache() { _klass = NULL; _method_idnum = -1; } |
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void init(Klass* k, Method* m); |
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Klass* klass() const { return _klass; } |
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int method_idnum() const { return _method_idnum; } |
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Method* get_method(); |
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// CDS support. Replace the klass in this with the archive version |
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// could use this for Enhanced Class Redefinition also. |
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void serialize(SerializeClosure* f) { |
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f->do_ptr((void**)&_klass); |
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} |
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void metaspace_pointers_do(MetaspaceClosure* it); |
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}; |
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// For UseCompressedOops. |
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struct NarrowPtrStruct { |
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// Base address for oop-within-java-object materialization. |
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// NULL if using wide oops or zero based narrow oops. |
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address _base; |
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// Number of shift bits for encoding/decoding narrow ptrs. |
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// 0 if using wide ptrs or zero based unscaled narrow ptrs, |
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// LogMinObjAlignmentInBytes/LogKlassAlignmentInBytes otherwise. |
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int _shift; |
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// Generate code with implicit null checks for narrow ptrs. |
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bool _use_implicit_null_checks; |
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}; |
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enum VerifyOption { |
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VerifyOption_Default = 0, |
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// G1 |
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VerifyOption_G1UsePrevMarking = VerifyOption_Default, |
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VerifyOption_G1UseNextMarking = VerifyOption_G1UsePrevMarking + 1, |
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VerifyOption_G1UseFullMarking = VerifyOption_G1UseNextMarking + 1 |
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}; |
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class Universe: AllStatic { |
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// Ugh. Universe is much too friendly. |
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friend class MarkSweep; |
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friend class oopDesc; |
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friend class ClassLoader; |
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friend class SystemDictionary; |
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friend class ReservedHeapSpace; |
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friend class VMStructs; |
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friend class VM_PopulateDumpSharedSpace; |
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friend class Metaspace; |
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friend class MetaspaceShared; |
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friend jint universe_init(); |
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friend void universe2_init(); |
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friend bool universe_post_init(); |
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friend void universe_post_module_init(); |
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private: |
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// Known classes in the VM |
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static Klass* _typeArrayKlassObjs[T_LONG+1]; |
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static Klass* _objectArrayKlassObj; |
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// Known objects in the VM |
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// Primitive objects |
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static oop _int_mirror; |
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static oop _float_mirror; |
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static oop _double_mirror; |
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static oop _byte_mirror; |
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static oop _bool_mirror; |
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static oop _char_mirror; |
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static oop _long_mirror; |
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static oop _short_mirror; |
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static oop _void_mirror; |
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static oop _main_thread_group; // Reference to the main thread group object |
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static oop _system_thread_group; // Reference to the system thread group object |
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static objArrayOop _the_empty_class_klass_array; // Canonicalized obj array of type java.lang.Class |
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static oop _the_null_sentinel; // A unique object pointer unused except as a sentinel for null. |
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static oop _the_null_string; // A cache of "null" as a Java string |
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static oop _the_min_jint_string; // A cache of "-2147483648" as a Java string |
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static LatestMethodCache* _finalizer_register_cache; // static method for registering finalizable objects |
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static LatestMethodCache* _loader_addClass_cache; // method for registering loaded classes in class loader vector |
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static LatestMethodCache* _pd_implies_cache; // method for checking protection domain attributes |
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static LatestMethodCache* _throw_illegal_access_error_cache; // Unsafe.throwIllegalAccessError() method |
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static LatestMethodCache* _do_stack_walk_cache; // method for stack walker callback |
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// preallocated error objects (no backtrace) |
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static oop _out_of_memory_error_java_heap; |
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static oop _out_of_memory_error_metaspace; |
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static oop _out_of_memory_error_class_metaspace; |
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static oop _out_of_memory_error_array_size; |
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static oop _out_of_memory_error_gc_overhead_limit; |
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static oop _out_of_memory_error_realloc_objects; |
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// preallocated cause message for delayed StackOverflowError |
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static oop _delayed_stack_overflow_error_message; |
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static Array<int>* _the_empty_int_array; // Canonicalized int array |
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static Array<u2>* _the_empty_short_array; // Canonicalized short array |
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static Array<Klass*>* _the_empty_klass_array; // Canonicalized klass array |
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static Array<InstanceKlass*>* _the_empty_instance_klass_array; // Canonicalized instance klass array |
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static Array<Method*>* _the_empty_method_array; // Canonicalized method array |
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static Array<Klass*>* _the_array_interfaces_array; |
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// array of preallocated error objects with backtrace |
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static objArrayOop _preallocated_out_of_memory_error_array; |
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// number of preallocated error objects available for use |
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static volatile jint _preallocated_out_of_memory_error_avail_count; |
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static oop _null_ptr_exception_instance; // preallocated exception object |
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static oop _arithmetic_exception_instance; // preallocated exception object |
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static oop _virtual_machine_error_instance; // preallocated exception object |
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// The object used as an exception dummy when exceptions are thrown for |
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// the vm thread. |
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static oop _vm_exception; |
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// References waiting to be transferred to the ReferenceHandler |
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static oop _reference_pending_list; |
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// The particular choice of collected heap. |
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static CollectedHeap* _collectedHeap; |
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static intptr_t _non_oop_bits; |
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// For UseCompressedOops. |
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static struct NarrowPtrStruct _narrow_oop; |
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// For UseCompressedClassPointers. |
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static struct NarrowPtrStruct _narrow_klass; |
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static address _narrow_ptrs_base; |
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189 |
// CompressedClassSpaceSize set to 1GB, but appear 3GB away from _narrow_ptrs_base during CDS dump. |
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190 |
static uint64_t _narrow_klass_range; |
1 | 191 |
// array of dummy objects used with +FullGCAlot |
192 |
debug_only(static objArrayOop _fullgc_alot_dummy_array;) |
|
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193 |
// index of next entry to clear |
1 | 194 |
debug_only(static int _fullgc_alot_dummy_next;) |
195 |
||
196 |
// Compiler/dispatch support |
|
197 |
static int _base_vtable_size; // Java vtbl size of klass Object (in words) |
|
198 |
||
199 |
// Initialization |
|
200 |
static bool _bootstrapping; // true during genesis |
|
36508 | 201 |
static bool _module_initialized; // true after call_initPhase2 called |
1 | 202 |
static bool _fully_initialized; // true after universe_init and initialize_vtables called |
203 |
||
204 |
// the array of preallocated errors with backtraces |
|
205 |
static objArrayOop preallocated_out_of_memory_errors() { return _preallocated_out_of_memory_error_array; } |
|
206 |
||
207 |
// generate an out of memory error; if possible using an error with preallocated backtrace; |
|
208 |
// otherwise return the given default error. |
|
209 |
static oop gen_out_of_memory_error(oop default_err); |
|
210 |
||
211 |
// Historic gc information |
|
212 |
static size_t _heap_capacity_at_last_gc; |
|
213 |
static size_t _heap_used_at_last_gc; |
|
214 |
||
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215 |
static CollectedHeap* create_heap(); |
1 | 216 |
static jint initialize_heap(); |
217 |
static void initialize_basic_type_mirrors(TRAPS); |
|
218 |
static void fixup_mirrors(TRAPS); |
|
219 |
||
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220 |
static void reinitialize_vtable_of(Klass* k, TRAPS); |
1 | 221 |
static void reinitialize_itables(TRAPS); |
222 |
static void compute_base_vtable_size(); // compute vtable size of class Object |
|
223 |
||
224 |
static void genesis(TRAPS); // Create the initial world |
|
225 |
||
226 |
// Mirrors for primitive classes (created eagerly) |
|
227 |
static oop check_mirror(oop m) { |
|
228 |
assert(m != NULL, "mirror not initialized"); |
|
229 |
return m; |
|
230 |
} |
|
231 |
||
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232 |
static void set_narrow_oop_base(address base) { |
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233 |
assert(UseCompressedOops, "no compressed oops?"); |
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|
234 |
_narrow_oop._base = base; |
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|
235 |
} |
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|
236 |
static void set_narrow_klass_base(address base) { |
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237 |
assert(UseCompressedClassPointers, "no compressed klass ptrs?"); |
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|
238 |
_narrow_klass._base = base; |
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|
239 |
} |
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240 |
static void set_narrow_klass_range(uint64_t range) { |
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241 |
assert(UseCompressedClassPointers, "no compressed klass ptrs?"); |
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242 |
_narrow_klass_range = range; |
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|
243 |
} |
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244 |
static void set_narrow_oop_use_implicit_null_checks(bool use) { |
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245 |
assert(UseCompressedOops, "no compressed ptrs?"); |
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246 |
_narrow_oop._use_implicit_null_checks = use; |
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|
247 |
} |
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|
248 |
|
1 | 249 |
// Debugging |
250 |
static int _verify_count; // number of verifies done |
|
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|
251 |
|
1 | 252 |
// True during call to verify(). Should only be set/cleared in verify(). |
253 |
static bool _verify_in_progress; |
|
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|
254 |
static long verify_flags; |
1 | 255 |
|
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|
256 |
static uintptr_t _verify_oop_mask; |
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|
257 |
static uintptr_t _verify_oop_bits; |
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|
258 |
|
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|
259 |
static void calculate_verify_data(HeapWord* low_boundary, HeapWord* high_boundary) PRODUCT_RETURN; |
1 | 260 |
static void compute_verify_oop_data(); |
261 |
||
262 |
public: |
|
263 |
// Known classes in the VM |
|
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|
264 |
static Klass* boolArrayKlassObj() { return typeArrayKlassObj(T_BOOLEAN); } |
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|
265 |
static Klass* byteArrayKlassObj() { return typeArrayKlassObj(T_BYTE); } |
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266 |
static Klass* charArrayKlassObj() { return typeArrayKlassObj(T_CHAR); } |
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267 |
static Klass* intArrayKlassObj() { return typeArrayKlassObj(T_INT); } |
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|
268 |
static Klass* shortArrayKlassObj() { return typeArrayKlassObj(T_SHORT); } |
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|
269 |
static Klass* longArrayKlassObj() { return typeArrayKlassObj(T_LONG); } |
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|
270 |
static Klass* floatArrayKlassObj() { return typeArrayKlassObj(T_FLOAT); } |
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|
271 |
static Klass* doubleArrayKlassObj() { return typeArrayKlassObj(T_DOUBLE); } |
1 | 272 |
|
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273 |
static Klass* objectArrayKlassObj() { return _objectArrayKlassObj; } |
1 | 274 |
|
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|
275 |
static Klass* typeArrayKlassObj(BasicType t) { |
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|
276 |
assert((uint)t >= T_BOOLEAN, "range check for type: %s", type2name(t)); |
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|
277 |
assert((uint)t < T_LONG+1, "range check for type: %s", type2name(t)); |
1 | 278 |
assert(_typeArrayKlassObjs[t] != NULL, "domain check"); |
279 |
return _typeArrayKlassObjs[t]; |
|
280 |
} |
|
281 |
||
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|
282 |
// Known objects in the VM |
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|
283 |
static oop int_mirror() { return check_mirror(_int_mirror); } |
1 | 284 |
static oop float_mirror() { return check_mirror(_float_mirror); } |
285 |
static oop double_mirror() { return check_mirror(_double_mirror); } |
|
286 |
static oop byte_mirror() { return check_mirror(_byte_mirror); } |
|
287 |
static oop bool_mirror() { return check_mirror(_bool_mirror); } |
|
288 |
static oop char_mirror() { return check_mirror(_char_mirror); } |
|
289 |
static oop long_mirror() { return check_mirror(_long_mirror); } |
|
290 |
static oop short_mirror() { return check_mirror(_short_mirror); } |
|
291 |
static oop void_mirror() { return check_mirror(_void_mirror); } |
|
292 |
||
49329 | 293 |
static void set_int_mirror(oop m) { _int_mirror = m; } |
294 |
static void set_float_mirror(oop m) { _float_mirror = m; } |
|
295 |
static void set_double_mirror(oop m) { _double_mirror = m; } |
|
296 |
static void set_byte_mirror(oop m) { _byte_mirror = m; } |
|
297 |
static void set_bool_mirror(oop m) { _bool_mirror = m; } |
|
298 |
static void set_char_mirror(oop m) { _char_mirror = m; } |
|
299 |
static void set_long_mirror(oop m) { _long_mirror = m; } |
|
300 |
static void set_short_mirror(oop m) { _short_mirror = m; } |
|
301 |
static void set_void_mirror(oop m) { _void_mirror = m; } |
|
302 |
||
1 | 303 |
// table of same |
304 |
static oop _mirrors[T_VOID+1]; |
|
305 |
||
306 |
static oop java_mirror(BasicType t) { |
|
307 |
assert((uint)t < T_VOID+1, "range check"); |
|
308 |
return check_mirror(_mirrors[t]); |
|
309 |
} |
|
310 |
static oop main_thread_group() { return _main_thread_group; } |
|
311 |
static void set_main_thread_group(oop group) { _main_thread_group = group;} |
|
312 |
||
313 |
static oop system_thread_group() { return _system_thread_group; } |
|
314 |
static void set_system_thread_group(oop group) { _system_thread_group = group;} |
|
315 |
||
316 |
static objArrayOop the_empty_class_klass_array () { return _the_empty_class_klass_array; } |
|
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|
317 |
static Array<Klass*>* the_array_interfaces_array() { return _the_array_interfaces_array; } |
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|
318 |
static oop the_null_string() { return _the_null_string; } |
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6892658: C2 should optimize some stringbuilder patterns
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|
319 |
static oop the_min_jint_string() { return _the_min_jint_string; } |
18056 | 320 |
|
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|
321 |
static Method* finalizer_register_method() { return _finalizer_register_cache->get_method(); } |
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|
322 |
static Method* loader_addClass_method() { return _loader_addClass_cache->get_method(); } |
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|
323 |
|
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|
324 |
static Method* protection_domain_implies_method() { return _pd_implies_cache->get_method(); } |
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|
325 |
static Method* throw_illegal_access_error() { return _throw_illegal_access_error_cache->get_method(); } |
18056 | 326 |
|
34280 | 327 |
static Method* do_stack_walk_method() { return _do_stack_walk_cache->get_method(); } |
328 |
||
48826 | 329 |
static oop the_null_sentinel() { return _the_null_sentinel; } |
330 |
static address the_null_sentinel_addr() { return (address) &_the_null_sentinel; } |
|
331 |
||
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|
332 |
// Function to initialize these |
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|
333 |
static void initialize_known_methods(TRAPS); |
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|
334 |
|
1 | 335 |
static oop null_ptr_exception_instance() { return _null_ptr_exception_instance; } |
336 |
static oop arithmetic_exception_instance() { return _arithmetic_exception_instance; } |
|
337 |
static oop virtual_machine_error_instance() { return _virtual_machine_error_instance; } |
|
338 |
static oop vm_exception() { return _vm_exception; } |
|
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|
339 |
|
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|
340 |
// Reference pending list manipulation. Access is protected by |
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|
341 |
// Heap_lock. The getter, setter and predicate require the caller |
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|
342 |
// owns the lock. Swap is used by parallel non-concurrent reference |
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|
343 |
// processing threads, where some higher level controller owns |
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|
344 |
// Heap_lock, so requires the lock is locked, but not necessarily by |
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|
345 |
// the current thread. |
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|
346 |
static oop reference_pending_list(); |
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|
347 |
static void set_reference_pending_list(oop list); |
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|
348 |
static bool has_reference_pending_list(); |
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|
349 |
static oop swap_reference_pending_list(oop list); |
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|
350 |
|
51329
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|
351 |
static Array<int>* the_empty_int_array() { return _the_empty_int_array; } |
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|
352 |
static Array<u2>* the_empty_short_array() { return _the_empty_short_array; } |
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|
353 |
static Array<Method*>* the_empty_method_array() { return _the_empty_method_array; } |
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|
354 |
static Array<Klass*>* the_empty_klass_array() { return _the_empty_klass_array; } |
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|
355 |
static Array<InstanceKlass*>* the_empty_instance_klass_array() { return _the_empty_instance_klass_array; } |
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|
356 |
|
1 | 357 |
// OutOfMemoryError support. Returns an error with the required message. The returned error |
358 |
// may or may not have a backtrace. If error has a backtrace then the stack trace is already |
|
359 |
// filled in. |
|
360 |
static oop out_of_memory_error_java_heap() { return gen_out_of_memory_error(_out_of_memory_error_java_heap); } |
|
18491
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8015391: NPG: With -XX:+UseCompressedKlassPointers OOME due to exhausted metadata space could occur when metaspace is almost empty
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|
361 |
static oop out_of_memory_error_metaspace() { return gen_out_of_memory_error(_out_of_memory_error_metaspace); } |
dd63ba6b0ee4
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changeset
|
362 |
static oop out_of_memory_error_class_metaspace() { return gen_out_of_memory_error(_out_of_memory_error_class_metaspace); } |
1 | 363 |
static oop out_of_memory_error_array_size() { return gen_out_of_memory_error(_out_of_memory_error_array_size); } |
364 |
static oop out_of_memory_error_gc_overhead_limit() { return gen_out_of_memory_error(_out_of_memory_error_gc_overhead_limit); } |
|
28039
bf5a8340bf8a
6898462: The escape analysis with G1 cause crash assertion src/share/vm/runtime/vframeArray.cpp:94
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|
365 |
static oop out_of_memory_error_realloc_objects() { return gen_out_of_memory_error(_out_of_memory_error_realloc_objects); } |
35071
a0910b1d3e0d
8046936: JEP 270: Reserved Stack Areas for Critical Sections
fparain
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changeset
|
366 |
static oop delayed_stack_overflow_error_message() { return _delayed_stack_overflow_error_message; } |
1 | 367 |
|
368 |
// The particular choice of collected heap. |
|
369 |
static CollectedHeap* heap() { return _collectedHeap; } |
|
370 |
||
360
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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parents:
1
diff
changeset
|
371 |
// For UseCompressedOops |
18025 | 372 |
// Narrow Oop encoding mode: |
373 |
// 0 - Use 32-bits oops without encoding when |
|
374 |
// NarrowOopHeapBaseMin + heap_size < 4Gb |
|
375 |
// 1 - Use zero based compressed oops with encoding when |
|
376 |
// NarrowOopHeapBaseMin + heap_size < 32Gb |
|
28372
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8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
377 |
// 2 - Use compressed oops with disjoint heap base if |
ce0aad4b8c44
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goetz
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diff
changeset
|
378 |
// base is 32G-aligned and base > 0. This allows certain |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
379 |
// optimizations in encoding/decoding. |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
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diff
changeset
|
380 |
// Disjoint: Bits used in base are disjoint from bits used |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
381 |
// for oops ==> oop = (cOop << 3) | base. One can disjoint |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
382 |
// the bits of an oop into base and compressed oop. |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
383 |
// 3 - Use compressed oops with heap base + encoding. |
18025 | 384 |
enum NARROW_OOP_MODE { |
385 |
UnscaledNarrowOop = 0, |
|
386 |
ZeroBasedNarrowOop = 1, |
|
28372
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
387 |
DisjointBaseNarrowOop = 2, |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
388 |
HeapBasedNarrowOop = 3, |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
389 |
AnyNarrowOopMode = 4 |
18025 | 390 |
}; |
391 |
static NARROW_OOP_MODE narrow_oop_mode(); |
|
392 |
static const char* narrow_oop_mode_to_string(NARROW_OOP_MODE mode); |
|
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
19319
diff
changeset
|
393 |
static char* preferred_heap_base(size_t heap_size, size_t alignment, NARROW_OOP_MODE mode); |
18025 | 394 |
static char* preferred_metaspace_base(size_t heap_size, NARROW_OOP_MODE mode); |
28372
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goetz
parents:
28039
diff
changeset
|
395 |
static address narrow_oop_base() { return _narrow_oop._base; } |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
396 |
// Test whether bits of addr and possible offsets into the heap overlap. |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
397 |
static bool is_disjoint_heap_base_address(address addr) { |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
398 |
return (((uint64_t)(intptr_t)addr) & |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
399 |
(((uint64_t)UCONST64(0xFFFFffffFFFFffff)) >> (32-LogMinObjAlignmentInBytes))) == 0; |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
400 |
} |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
401 |
// Check for disjoint base compressed oops. |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
402 |
static bool narrow_oop_base_disjoint() { |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
403 |
return _narrow_oop._base != NULL && is_disjoint_heap_base_address(_narrow_oop._base); |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
404 |
} |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
405 |
// Check for real heapbased compressed oops. |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
406 |
// We must subtract the base as the bits overlap. |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
407 |
// If we negate above function, we also get unscaled and zerobased. |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
408 |
static bool narrow_oop_base_overlaps() { |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
409 |
return _narrow_oop._base != NULL && !is_disjoint_heap_base_address(_narrow_oop._base); |
ce0aad4b8c44
8064457: Introduce compressed oops mode disjoint base and improve compressed heap handling.
goetz
parents:
28039
diff
changeset
|
410 |
} |
13969
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
411 |
static bool is_narrow_oop_base(void* addr) { return (narrow_oop_base() == (address)addr); } |
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
412 |
static int narrow_oop_shift() { return _narrow_oop._shift; } |
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
413 |
static bool narrow_oop_use_implicit_null_checks() { return _narrow_oop._use_implicit_null_checks; } |
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
414 |
|
19979
ebe1dbb6e1aa
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
19546
diff
changeset
|
415 |
// For UseCompressedClassPointers |
13969
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
416 |
static address narrow_klass_base() { return _narrow_klass._base; } |
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
417 |
static bool is_narrow_klass_base(void* addr) { return (narrow_klass_base() == (address)addr); } |
49481
8d02d496e785
8193266: AArch64: TestOptionsWithRanges.java SIGSEGV
smonteith
parents:
49389
diff
changeset
|
418 |
static uint64_t narrow_klass_range() { return _narrow_klass_range; } |
13969
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
419 |
static int narrow_klass_shift() { return _narrow_klass._shift; } |
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
420 |
static bool narrow_klass_use_implicit_null_checks() { return _narrow_klass._use_implicit_null_checks; } |
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
421 |
|
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
422 |
static address* narrow_ptrs_base_addr() { return &_narrow_ptrs_base; } |
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
423 |
static void set_narrow_ptrs_base(address a) { _narrow_ptrs_base = a; } |
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
424 |
static address narrow_ptrs_base() { return _narrow_ptrs_base; } |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13196
diff
changeset
|
425 |
|
31335
60081f497e75
8035074: hs_err improvement: Add time zone information in the hs_err file
coleenp
parents:
30260
diff
changeset
|
426 |
static void print_compressed_oops_mode(outputStream* st); |
26688
bb0cdd873e51
8022865: [TESTBUG] Compressed Oops testing needs to be revised
ctornqvi
parents:
21770
diff
changeset
|
427 |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13196
diff
changeset
|
428 |
// this is set in vm_version on sparc (and then reset in universe afaict) |
13969
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
429 |
static void set_narrow_oop_shift(int shift) { |
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
430 |
_narrow_oop._shift = shift; |
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
431 |
} |
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
432 |
|
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
433 |
static void set_narrow_klass_shift(int shift) { |
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
434 |
assert(shift == 0 || shift == LogKlassAlignmentInBytes, "invalid shift for klass ptrs"); |
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
435 |
_narrow_klass._shift = shift; |
d2a189b83b87
7054512: Compress class pointers after perm gen removal
roland
parents:
13753
diff
changeset
|
436 |
} |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13196
diff
changeset
|
437 |
|
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13196
diff
changeset
|
438 |
// Reserve Java heap and determine CompressedOops mode |
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13196
diff
changeset
|
439 |
static ReservedSpace reserve_heap(size_t heap_size, size_t alignment); |
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
440 |
|
1 | 441 |
// Historic gc information |
442 |
static size_t get_heap_capacity_at_last_gc() { return _heap_capacity_at_last_gc; } |
|
443 |
static size_t get_heap_free_at_last_gc() { return _heap_capacity_at_last_gc - _heap_used_at_last_gc; } |
|
444 |
static size_t get_heap_used_at_last_gc() { return _heap_used_at_last_gc; } |
|
445 |
static void update_heap_info_at_gc(); |
|
446 |
||
447 |
// Testers |
|
448 |
static bool is_bootstrapping() { return _bootstrapping; } |
|
36508 | 449 |
static bool is_module_initialized() { return _module_initialized; } |
1 | 450 |
static bool is_fully_initialized() { return _fully_initialized; } |
451 |
||
452 |
static bool on_page_boundary(void* addr); |
|
453 |
static bool should_fill_in_stack_trace(Handle throwable); |
|
454 |
static void check_alignment(uintx size, uintx alignment, const char* name); |
|
455 |
||
456 |
// Iteration |
|
457 |
||
458 |
// Apply "f" to the addresses of all the direct heap pointers maintained |
|
459 |
// as static fields of "Universe". |
|
51554
5b0d86499960
8209958: Clean up duplicate basic array type statics in Universe
coleenp
parents:
51530
diff
changeset
|
460 |
static void oops_do(OopClosure* f); |
1 | 461 |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13196
diff
changeset
|
462 |
// CDS support |
51554
5b0d86499960
8209958: Clean up duplicate basic array type statics in Universe
coleenp
parents:
51530
diff
changeset
|
463 |
static void serialize(SerializeClosure* f); |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13196
diff
changeset
|
464 |
|
1 | 465 |
// Apply "f" to all klasses for basic types (classes not present in |
466 |
// SystemDictionary). |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13196
diff
changeset
|
467 |
static void basic_type_classes_do(void f(Klass*)); |
51530
1f0b605bdc28
8209821: Make JVMTI GetClassLoaderClasses not walk CLDG
coleenp
parents:
51329
diff
changeset
|
468 |
static void basic_type_classes_do(KlassClosure* closure); |
46746
ea379ebb9447
8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents:
46448
diff
changeset
|
469 |
static void metaspace_pointers_do(MetaspaceClosure* it); |
1 | 470 |
|
471 |
// Debugging |
|
35509
15f2d488eeee
8072725: Provide more granular levels for GC verification
poonam
parents:
35071
diff
changeset
|
472 |
enum VERIFY_FLAGS { |
15f2d488eeee
8072725: Provide more granular levels for GC verification
poonam
parents:
35071
diff
changeset
|
473 |
Verify_Threads = 1, |
15f2d488eeee
8072725: Provide more granular levels for GC verification
poonam
parents:
35071
diff
changeset
|
474 |
Verify_Heap = 2, |
15f2d488eeee
8072725: Provide more granular levels for GC verification
poonam
parents:
35071
diff
changeset
|
475 |
Verify_SymbolTable = 4, |
15f2d488eeee
8072725: Provide more granular levels for GC verification
poonam
parents:
35071
diff
changeset
|
476 |
Verify_StringTable = 8, |
15f2d488eeee
8072725: Provide more granular levels for GC verification
poonam
parents:
35071
diff
changeset
|
477 |
Verify_CodeCache = 16, |
15f2d488eeee
8072725: Provide more granular levels for GC verification
poonam
parents:
35071
diff
changeset
|
478 |
Verify_SystemDictionary = 32, |
15f2d488eeee
8072725: Provide more granular levels for GC verification
poonam
parents:
35071
diff
changeset
|
479 |
Verify_ClassLoaderDataGraph = 64, |
49389
9ef2eee8ca7c
8199430: Rename MetaspaceAux to something more meaningful
stuefe
parents:
49359
diff
changeset
|
480 |
Verify_MetaspaceUtils = 128, |
35509
15f2d488eeee
8072725: Provide more granular levels for GC verification
poonam
parents:
35071
diff
changeset
|
481 |
Verify_JNIHandles = 256, |
40667 | 482 |
Verify_CodeCacheOops = 512, |
35509
15f2d488eeee
8072725: Provide more granular levels for GC verification
poonam
parents:
35071
diff
changeset
|
483 |
Verify_All = -1 |
15f2d488eeee
8072725: Provide more granular levels for GC verification
poonam
parents:
35071
diff
changeset
|
484 |
}; |
15f2d488eeee
8072725: Provide more granular levels for GC verification
poonam
parents:
35071
diff
changeset
|
485 |
static void initialize_verify_flags(); |
15f2d488eeee
8072725: Provide more granular levels for GC verification
poonam
parents:
35071
diff
changeset
|
486 |
static bool should_verify_subset(uint subset); |
1 | 487 |
static bool verify_in_progress() { return _verify_in_progress; } |
35061 | 488 |
static void verify(VerifyOption option, const char* prefix); |
489 |
static void verify(const char* prefix) { |
|
490 |
verify(VerifyOption_Default, prefix); |
|
14076
84643cfaeaa8
8000831: Heap verification output incorrect/incomplete
johnc
parents:
13753
diff
changeset
|
491 |
} |
35061 | 492 |
static void verify() { |
493 |
verify(""); |
|
14076
84643cfaeaa8
8000831: Heap verification output incorrect/incomplete
johnc
parents:
13753
diff
changeset
|
494 |
} |
84643cfaeaa8
8000831: Heap verification output incorrect/incomplete
johnc
parents:
13753
diff
changeset
|
495 |
|
10997
0be4b3be7197
7099849: G1: include heap region information in hs_err files
tonyp
parents:
10265
diff
changeset
|
496 |
static int verify_count() { return _verify_count; } |
35061 | 497 |
static void print_on(outputStream* st); |
1 | 498 |
static void print_heap_at_SIGBREAK(); |
35061 | 499 |
static void print_heap_before_gc(); |
500 |
static void print_heap_after_gc(); |
|
1 | 501 |
|
502 |
// Change the number of dummy objects kept reachable by the full gc dummy |
|
503 |
// array; this should trigger relocation in a sliding compaction collector. |
|
504 |
debug_only(static bool release_fullgc_alot_dummy();) |
|
505 |
// The non-oop pattern (see compiledIC.hpp, etc) |
|
506 |
static void* non_oop_word(); |
|
507 |
||
508 |
// Oop verification (see MacroAssembler::verify_oop) |
|
509 |
static uintptr_t verify_oop_mask() PRODUCT_RETURN0; |
|
510 |
static uintptr_t verify_oop_bits() PRODUCT_RETURN0; |
|
511 |
static uintptr_t verify_mark_bits() PRODUCT_RETURN0; |
|
512 |
static uintptr_t verify_mark_mask() PRODUCT_RETURN0; |
|
513 |
||
514 |
// Compiler support |
|
515 |
static int base_vtable_size() { return _base_vtable_size; } |
|
516 |
}; |
|
517 |
||
13195 | 518 |
class DeferredObjAllocEvent : public CHeapObj<mtInternal> { |
1 | 519 |
private: |
520 |
oop _oop; |
|
521 |
size_t _bytesize; |
|
522 |
jint _arena_id; |
|
523 |
||
524 |
public: |
|
525 |
DeferredObjAllocEvent(const oop o, const size_t s, const jint id) { |
|
526 |
_oop = o; |
|
527 |
_bytesize = s; |
|
528 |
_arena_id = id; |
|
529 |
} |
|
530 |
||
531 |
~DeferredObjAllocEvent() { |
|
532 |
} |
|
533 |
||
534 |
jint arena_id() { return _arena_id; } |
|
535 |
size_t bytesize() { return _bytesize; } |
|
536 |
oop get_oop() { return _oop; } |
|
537 |
}; |
|
7397 | 538 |
|
539 |
#endif // SHARE_VM_MEMORY_UNIVERSE_HPP |