author | katleman |
Thu, 16 Oct 2014 12:01:59 -0700 (2014-10-16) | |
changeset 27002 | 297d6a75d68a |
parent 26843 | 1220c9e50fff |
child 28039 | bf5a8340bf8a |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997, 2013, 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 "runtime/handles.hpp" |
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#include "utilities/array.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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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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// Enhanced Class Redefinition support |
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void classes_do(void f(Klass*)) { |
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f(_klass); |
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} |
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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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}; |
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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_G1UseMarkWord = 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 Arguments; |
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friend class SystemDictionary; |
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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 jint universe_init(); |
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friend void universe2_init(); |
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friend bool universe_post_init(); |
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private: |
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// Known classes in the VM |
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static Klass* _boolArrayKlassObj; |
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static Klass* _byteArrayKlassObj; |
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static Klass* _charArrayKlassObj; |
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static Klass* _intArrayKlassObj; |
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static Klass* _shortArrayKlassObj; |
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static Klass* _longArrayKlassObj; |
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static Klass* _singleArrayKlassObj; |
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static Klass* _doubleArrayKlassObj; |
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static Klass* _typeArrayKlassObjs[T_VOID+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_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 Method* _throw_illegal_access_error; |
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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 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 obj array |
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static Array<Method*>* _the_empty_method_array; // Canonicalized method obj 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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static oop _allocation_context_notification_obj; |
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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; |
1 | 193 |
|
194 |
// array of dummy objects used with +FullGCAlot |
|
195 |
debug_only(static objArrayOop _fullgc_alot_dummy_array;) |
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// index of next entry to clear |
1 | 197 |
debug_only(static int _fullgc_alot_dummy_next;) |
198 |
||
199 |
// Compiler/dispatch support |
|
200 |
static int _base_vtable_size; // Java vtbl size of klass Object (in words) |
|
201 |
||
202 |
// Initialization |
|
203 |
static bool _bootstrapping; // true during genesis |
|
204 |
static bool _fully_initialized; // true after universe_init and initialize_vtables called |
|
205 |
||
206 |
// the array of preallocated errors with backtraces |
|
207 |
static objArrayOop preallocated_out_of_memory_errors() { return _preallocated_out_of_memory_error_array; } |
|
208 |
||
209 |
// generate an out of memory error; if possible using an error with preallocated backtrace; |
|
210 |
// otherwise return the given default error. |
|
211 |
static oop gen_out_of_memory_error(oop default_err); |
|
212 |
||
213 |
// Historic gc information |
|
214 |
static size_t _heap_capacity_at_last_gc; |
|
215 |
static size_t _heap_used_at_last_gc; |
|
216 |
||
217 |
static jint initialize_heap(); |
|
218 |
static void initialize_basic_type_mirrors(TRAPS); |
|
219 |
static void fixup_mirrors(TRAPS); |
|
220 |
||
221 |
static void reinitialize_vtable_of(KlassHandle h_k, TRAPS); |
|
222 |
static void reinitialize_itables(TRAPS); |
|
223 |
static void compute_base_vtable_size(); // compute vtable size of class Object |
|
224 |
||
225 |
static void genesis(TRAPS); // Create the initial world |
|
226 |
||
227 |
// Mirrors for primitive classes (created eagerly) |
|
228 |
static oop check_mirror(oop m) { |
|
229 |
assert(m != NULL, "mirror not initialized"); |
|
230 |
return m; |
|
231 |
} |
|
232 |
||
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static void set_narrow_oop_base(address base) { |
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assert(UseCompressedOops, "no compressed oops?"); |
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235 |
_narrow_oop._base = base; |
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236 |
} |
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static void set_narrow_klass_base(address base) { |
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assert(UseCompressedClassPointers, "no compressed klass ptrs?"); |
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_narrow_klass._base = base; |
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240 |
} |
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241 |
static void set_narrow_oop_use_implicit_null_checks(bool use) { |
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assert(UseCompressedOops, "no compressed ptrs?"); |
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_narrow_oop._use_implicit_null_checks = use; |
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} |
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245 |
|
1 | 246 |
// Debugging |
247 |
static int _verify_count; // number of verifies done |
|
248 |
// True during call to verify(). Should only be set/cleared in verify(). |
|
249 |
static bool _verify_in_progress; |
|
250 |
||
251 |
static void compute_verify_oop_data(); |
|
252 |
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253 |
public: |
|
254 |
// Known classes in the VM |
|
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static Klass* boolArrayKlassObj() { return _boolArrayKlassObj; } |
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static Klass* byteArrayKlassObj() { return _byteArrayKlassObj; } |
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static Klass* charArrayKlassObj() { return _charArrayKlassObj; } |
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static Klass* intArrayKlassObj() { return _intArrayKlassObj; } |
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static Klass* shortArrayKlassObj() { return _shortArrayKlassObj; } |
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static Klass* longArrayKlassObj() { return _longArrayKlassObj; } |
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static Klass* singleArrayKlassObj() { return _singleArrayKlassObj; } |
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static Klass* doubleArrayKlassObj() { return _doubleArrayKlassObj; } |
1 | 263 |
|
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static Klass* objectArrayKlassObj() { |
1 | 265 |
return _objectArrayKlassObj; |
266 |
} |
|
267 |
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static Klass* typeArrayKlassObj(BasicType t) { |
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assert((uint)t < T_VOID+1, err_msg("range check for type: %s", type2name(t))); |
1 | 270 |
assert(_typeArrayKlassObjs[t] != NULL, "domain check"); |
271 |
return _typeArrayKlassObjs[t]; |
|
272 |
} |
|
273 |
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// Known objects in the VM |
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275 |
static oop int_mirror() { return check_mirror(_int_mirror); } |
1 | 276 |
static oop float_mirror() { return check_mirror(_float_mirror); } |
277 |
static oop double_mirror() { return check_mirror(_double_mirror); } |
|
278 |
static oop byte_mirror() { return check_mirror(_byte_mirror); } |
|
279 |
static oop bool_mirror() { return check_mirror(_bool_mirror); } |
|
280 |
static oop char_mirror() { return check_mirror(_char_mirror); } |
|
281 |
static oop long_mirror() { return check_mirror(_long_mirror); } |
|
282 |
static oop short_mirror() { return check_mirror(_short_mirror); } |
|
283 |
static oop void_mirror() { return check_mirror(_void_mirror); } |
|
284 |
||
285 |
// table of same |
|
286 |
static oop _mirrors[T_VOID+1]; |
|
287 |
||
288 |
static oop java_mirror(BasicType t) { |
|
289 |
assert((uint)t < T_VOID+1, "range check"); |
|
290 |
return check_mirror(_mirrors[t]); |
|
291 |
} |
|
292 |
static oop main_thread_group() { return _main_thread_group; } |
|
293 |
static void set_main_thread_group(oop group) { _main_thread_group = group;} |
|
294 |
||
295 |
static oop system_thread_group() { return _system_thread_group; } |
|
296 |
static void set_system_thread_group(oop group) { _system_thread_group = group;} |
|
297 |
||
298 |
static objArrayOop the_empty_class_klass_array () { return _the_empty_class_klass_array; } |
|
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static Array<Klass*>* the_array_interfaces_array() { return _the_array_interfaces_array; } |
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static oop the_null_string() { return _the_null_string; } |
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static oop the_min_jint_string() { return _the_min_jint_string; } |
18056 | 302 |
|
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static Method* finalizer_register_method() { return _finalizer_register_cache->get_method(); } |
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static Method* loader_addClass_method() { return _loader_addClass_cache->get_method(); } |
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305 |
|
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306 |
static Method* protection_domain_implies_method() { return _pd_implies_cache->get_method(); } |
18056 | 307 |
|
1 | 308 |
static oop null_ptr_exception_instance() { return _null_ptr_exception_instance; } |
309 |
static oop arithmetic_exception_instance() { return _arithmetic_exception_instance; } |
|
310 |
static oop virtual_machine_error_instance() { return _virtual_machine_error_instance; } |
|
311 |
static oop vm_exception() { return _vm_exception; } |
|
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312 |
|
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313 |
static inline oop allocation_context_notification_obj(); |
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|
314 |
static inline void set_allocation_context_notification_obj(oop obj); |
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|
315 |
|
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|
316 |
static Method* throw_illegal_access_error() { return _throw_illegal_access_error; } |
1 | 317 |
|
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318 |
static Array<int>* the_empty_int_array() { return _the_empty_int_array; } |
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319 |
static Array<u2>* the_empty_short_array() { return _the_empty_short_array; } |
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320 |
static Array<Method*>* the_empty_method_array() { return _the_empty_method_array; } |
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321 |
static Array<Klass*>* the_empty_klass_array() { return _the_empty_klass_array; } |
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322 |
|
1 | 323 |
// OutOfMemoryError support. Returns an error with the required message. The returned error |
324 |
// may or may not have a backtrace. If error has a backtrace then the stack trace is already |
|
325 |
// filled in. |
|
326 |
static oop out_of_memory_error_java_heap() { return gen_out_of_memory_error(_out_of_memory_error_java_heap); } |
|
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327 |
static oop out_of_memory_error_metaspace() { return gen_out_of_memory_error(_out_of_memory_error_metaspace); } |
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328 |
static oop out_of_memory_error_class_metaspace() { return gen_out_of_memory_error(_out_of_memory_error_class_metaspace); } |
1 | 329 |
static oop out_of_memory_error_array_size() { return gen_out_of_memory_error(_out_of_memory_error_array_size); } |
330 |
static oop out_of_memory_error_gc_overhead_limit() { return gen_out_of_memory_error(_out_of_memory_error_gc_overhead_limit); } |
|
331 |
||
332 |
// Accessors needed for fast allocation |
|
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333 |
static Klass** boolArrayKlassObj_addr() { return &_boolArrayKlassObj; } |
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static Klass** byteArrayKlassObj_addr() { return &_byteArrayKlassObj; } |
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static Klass** charArrayKlassObj_addr() { return &_charArrayKlassObj; } |
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static Klass** intArrayKlassObj_addr() { return &_intArrayKlassObj; } |
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static Klass** shortArrayKlassObj_addr() { return &_shortArrayKlassObj; } |
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static Klass** longArrayKlassObj_addr() { return &_longArrayKlassObj; } |
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static Klass** singleArrayKlassObj_addr() { return &_singleArrayKlassObj; } |
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static Klass** doubleArrayKlassObj_addr() { return &_doubleArrayKlassObj; } |
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341 |
static Klass** objectArrayKlassObj_addr() { return &_objectArrayKlassObj; } |
1 | 342 |
|
343 |
// The particular choice of collected heap. |
|
344 |
static CollectedHeap* heap() { return _collectedHeap; } |
|
345 |
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// For UseCompressedOops |
18025 | 347 |
// Narrow Oop encoding mode: |
348 |
// 0 - Use 32-bits oops without encoding when |
|
349 |
// NarrowOopHeapBaseMin + heap_size < 4Gb |
|
350 |
// 1 - Use zero based compressed oops with encoding when |
|
351 |
// NarrowOopHeapBaseMin + heap_size < 32Gb |
|
352 |
// 2 - Use compressed oops with heap base + encoding. |
|
353 |
enum NARROW_OOP_MODE { |
|
354 |
UnscaledNarrowOop = 0, |
|
355 |
ZeroBasedNarrowOop = 1, |
|
356 |
HeapBasedNarrowOop = 2 |
|
357 |
}; |
|
358 |
static NARROW_OOP_MODE narrow_oop_mode(); |
|
359 |
static const char* narrow_oop_mode_to_string(NARROW_OOP_MODE mode); |
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static char* preferred_heap_base(size_t heap_size, size_t alignment, NARROW_OOP_MODE mode); |
18025 | 361 |
static char* preferred_metaspace_base(size_t heap_size, NARROW_OOP_MODE mode); |
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static address narrow_oop_base() { return _narrow_oop._base; } |
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static bool is_narrow_oop_base(void* addr) { return (narrow_oop_base() == (address)addr); } |
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static int narrow_oop_shift() { return _narrow_oop._shift; } |
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static bool narrow_oop_use_implicit_null_checks() { return _narrow_oop._use_implicit_null_checks; } |
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366 |
|
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// For UseCompressedClassPointers |
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static address narrow_klass_base() { return _narrow_klass._base; } |
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static bool is_narrow_klass_base(void* addr) { return (narrow_klass_base() == (address)addr); } |
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static int narrow_klass_shift() { return _narrow_klass._shift; } |
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static bool narrow_klass_use_implicit_null_checks() { return _narrow_klass._use_implicit_null_checks; } |
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372 |
|
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static address* narrow_ptrs_base_addr() { return &_narrow_ptrs_base; } |
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static void set_narrow_ptrs_base(address a) { _narrow_ptrs_base = a; } |
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static address narrow_ptrs_base() { return _narrow_ptrs_base; } |
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|
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377 |
static void print_compressed_oops_mode(); |
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378 |
|
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// this is set in vm_version on sparc (and then reset in universe afaict) |
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static void set_narrow_oop_shift(int shift) { |
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381 |
_narrow_oop._shift = shift; |
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382 |
} |
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383 |
|
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384 |
static void set_narrow_klass_shift(int shift) { |
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assert(shift == 0 || shift == LogKlassAlignmentInBytes, "invalid shift for klass ptrs"); |
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386 |
_narrow_klass._shift = shift; |
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387 |
} |
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388 |
|
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389 |
// Reserve Java heap and determine CompressedOops mode |
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390 |
static ReservedSpace reserve_heap(size_t heap_size, size_t alignment); |
360
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391 |
|
1 | 392 |
// Historic gc information |
393 |
static size_t get_heap_capacity_at_last_gc() { return _heap_capacity_at_last_gc; } |
|
394 |
static size_t get_heap_free_at_last_gc() { return _heap_capacity_at_last_gc - _heap_used_at_last_gc; } |
|
395 |
static size_t get_heap_used_at_last_gc() { return _heap_used_at_last_gc; } |
|
396 |
static void update_heap_info_at_gc(); |
|
397 |
||
398 |
// Testers |
|
399 |
static bool is_bootstrapping() { return _bootstrapping; } |
|
400 |
static bool is_fully_initialized() { return _fully_initialized; } |
|
401 |
||
402 |
static inline bool element_type_should_be_aligned(BasicType type); |
|
403 |
static inline bool field_type_should_be_aligned(BasicType type); |
|
404 |
static bool on_page_boundary(void* addr); |
|
405 |
static bool should_fill_in_stack_trace(Handle throwable); |
|
406 |
static void check_alignment(uintx size, uintx alignment, const char* name); |
|
407 |
||
408 |
// Finalizer support. |
|
409 |
static void run_finalizers_on_exit(); |
|
410 |
||
411 |
// Iteration |
|
412 |
||
413 |
// Apply "f" to the addresses of all the direct heap pointers maintained |
|
414 |
// as static fields of "Universe". |
|
415 |
static void oops_do(OopClosure* f, bool do_all = false); |
|
416 |
||
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417 |
// CDS support |
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418 |
static void serialize(SerializeClosure* f, bool do_all = false); |
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419 |
|
1 | 420 |
// Apply "f" to all klasses for basic types (classes not present in |
421 |
// SystemDictionary). |
|
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422 |
static void basic_type_classes_do(void f(Klass*)); |
1 | 423 |
|
424 |
// For sharing -- fill in a list of known vtable pointers. |
|
425 |
static void init_self_patching_vtbl_list(void** list, int count); |
|
426 |
||
427 |
// Debugging |
|
428 |
static bool verify_in_progress() { return _verify_in_progress; } |
|
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429 |
static void verify(VerifyOption option, const char* prefix, bool silent = VerifySilently); |
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static void verify(const char* prefix, bool silent = VerifySilently) { |
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431 |
verify(VerifyOption_Default, prefix, silent); |
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|
432 |
} |
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433 |
static void verify(bool silent = VerifySilently) { |
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434 |
verify("", silent); |
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|
435 |
} |
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|
436 |
|
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|
437 |
static int verify_count() { return _verify_count; } |
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438 |
// The default behavior is to call print_on() on gclog_or_tty. |
1 | 439 |
static void print(); |
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440 |
// The extended parameter determines which method on the heap will |
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441 |
// be called: print_on() (extended == false) or print_extended_on() |
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442 |
// (extended == true). |
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|
443 |
static void print_on(outputStream* st, bool extended = false); |
1 | 444 |
static void print_heap_at_SIGBREAK(); |
445 |
static void print_heap_before_gc() { print_heap_before_gc(gclog_or_tty); } |
|
446 |
static void print_heap_after_gc() { print_heap_after_gc(gclog_or_tty); } |
|
11788 | 447 |
static void print_heap_before_gc(outputStream* st, bool ignore_extended = false); |
448 |
static void print_heap_after_gc(outputStream* st, bool ignore_extended = false); |
|
1 | 449 |
|
450 |
// Change the number of dummy objects kept reachable by the full gc dummy |
|
451 |
// array; this should trigger relocation in a sliding compaction collector. |
|
452 |
debug_only(static bool release_fullgc_alot_dummy();) |
|
453 |
// The non-oop pattern (see compiledIC.hpp, etc) |
|
454 |
static void* non_oop_word(); |
|
455 |
||
456 |
// Oop verification (see MacroAssembler::verify_oop) |
|
457 |
static uintptr_t verify_oop_mask() PRODUCT_RETURN0; |
|
458 |
static uintptr_t verify_oop_bits() PRODUCT_RETURN0; |
|
459 |
static uintptr_t verify_mark_bits() PRODUCT_RETURN0; |
|
460 |
static uintptr_t verify_mark_mask() PRODUCT_RETURN0; |
|
461 |
||
462 |
// Flushing and deoptimization |
|
463 |
static void flush_dependents_on(instanceKlassHandle dependee); |
|
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|
464 |
static void flush_dependents_on(Handle call_site, Handle method_handle); |
1 | 465 |
#ifdef HOTSWAP |
466 |
// Flushing and deoptimization in case of evolution |
|
467 |
static void flush_evol_dependents_on(instanceKlassHandle dependee); |
|
468 |
#endif // HOTSWAP |
|
469 |
// Support for fullspeed debugging |
|
470 |
static void flush_dependents_on_method(methodHandle dependee); |
|
471 |
||
472 |
// Compiler support |
|
473 |
static int base_vtable_size() { return _base_vtable_size; } |
|
474 |
}; |
|
475 |
||
13195 | 476 |
class DeferredObjAllocEvent : public CHeapObj<mtInternal> { |
1 | 477 |
private: |
478 |
oop _oop; |
|
479 |
size_t _bytesize; |
|
480 |
jint _arena_id; |
|
481 |
||
482 |
public: |
|
483 |
DeferredObjAllocEvent(const oop o, const size_t s, const jint id) { |
|
484 |
_oop = o; |
|
485 |
_bytesize = s; |
|
486 |
_arena_id = id; |
|
487 |
} |
|
488 |
||
489 |
~DeferredObjAllocEvent() { |
|
490 |
} |
|
491 |
||
492 |
jint arena_id() { return _arena_id; } |
|
493 |
size_t bytesize() { return _bytesize; } |
|
494 |
oop get_oop() { return _oop; } |
|
495 |
}; |
|
7397 | 496 |
|
497 |
#endif // SHARE_VM_MEMORY_UNIVERSE_HPP |