aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #ifndef SHARE_VM_MEMORY_UNIVERSE_HPP
aoqi@0: #define SHARE_VM_MEMORY_UNIVERSE_HPP
aoqi@0: 
aoqi@0: #include "runtime/handles.hpp"
aoqi@0: #include "utilities/array.hpp"
aoqi@0: #include "utilities/growableArray.hpp"
aoqi@0: 
aoqi@0: // Universe is a name space holding known system classes and objects in the VM.
aoqi@0: //
aoqi@0: // Loaded classes are accessible through the SystemDictionary.
aoqi@0: //
aoqi@0: // The object heap is allocated and accessed through Universe, and various allocation
aoqi@0: // support is provided. Allocation by the interpreter and compiled code is done inline
aoqi@0: // and bails out to Scavenge::invoke_and_allocate.
aoqi@0: 
aoqi@0: class CollectedHeap;
aoqi@0: class DeferredObjAllocEvent;
aoqi@0: 
aoqi@0: 
aoqi@0: // A helper class for caching a Method* when the user of the cache
aoqi@0: // only cares about the latest version of the Method*.  This cache safely
aoqi@0: // interacts with the RedefineClasses API.
aoqi@0: 
aoqi@0: class LatestMethodCache : public CHeapObj<mtClass> {
aoqi@0:   // We save the Klass* and the idnum of Method* in order to get
aoqi@0:   // the current cached Method*.
aoqi@0:  private:
aoqi@0:   Klass*                _klass;
aoqi@0:   int                   _method_idnum;
aoqi@0: 
aoqi@0:  public:
aoqi@0:   LatestMethodCache()   { _klass = NULL; _method_idnum = -1; }
aoqi@0:   ~LatestMethodCache()  { _klass = NULL; _method_idnum = -1; }
aoqi@0: 
aoqi@0:   void   init(Klass* k, Method* m);
aoqi@0:   Klass* klass() const           { return _klass; }
aoqi@0:   int    method_idnum() const    { return _method_idnum; }
aoqi@0: 
aoqi@0:   Method* get_method();
aoqi@0: 
aoqi@0:   // Enhanced Class Redefinition support
aoqi@0:   void classes_do(void f(Klass*)) {
aoqi@0:     f(_klass);
aoqi@0:   }
aoqi@0: 
aoqi@0:   // CDS support.  Replace the klass in this with the archive version
aoqi@0:   // could use this for Enhanced Class Redefinition also.
aoqi@0:   void serialize(SerializeClosure* f) {
aoqi@0:     f->do_ptr((void**)&_klass);
aoqi@0:   }
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: // For UseCompressedOops.
aoqi@0: struct NarrowPtrStruct {
aoqi@0:   // Base address for oop-within-java-object materialization.
aoqi@0:   // NULL if using wide oops or zero based narrow oops.
aoqi@0:   address _base;
aoqi@0:   // Number of shift bits for encoding/decoding narrow ptrs.
aoqi@0:   // 0 if using wide ptrs or zero based unscaled narrow ptrs,
aoqi@0:   // LogMinObjAlignmentInBytes/LogKlassAlignmentInBytes otherwise.
aoqi@0:   int     _shift;
aoqi@0:   // Generate code with implicit null checks for narrow ptrs.
aoqi@0:   bool    _use_implicit_null_checks;
aoqi@0: };
aoqi@0: 
aoqi@0: enum VerifyOption {
aoqi@0:       VerifyOption_Default = 0,
aoqi@0: 
aoqi@0:       // G1
aoqi@0:       VerifyOption_G1UsePrevMarking = VerifyOption_Default,
aoqi@0:       VerifyOption_G1UseNextMarking = VerifyOption_G1UsePrevMarking + 1,
aoqi@0:       VerifyOption_G1UseMarkWord    = VerifyOption_G1UseNextMarking + 1
aoqi@0: };
aoqi@0: 
aoqi@0: class Universe: AllStatic {
aoqi@0:   // Ugh.  Universe is much too friendly.
aoqi@0:   friend class MarkSweep;
aoqi@0:   friend class oopDesc;
aoqi@0:   friend class ClassLoader;
aoqi@0:   friend class Arguments;
aoqi@0:   friend class SystemDictionary;
aoqi@0:   friend class VMStructs;
aoqi@0:   friend class VM_PopulateDumpSharedSpace;
aoqi@0:   friend class Metaspace;
aoqi@0: 
aoqi@0:   friend jint  universe_init();
aoqi@0:   friend void  universe2_init();
aoqi@0:   friend bool  universe_post_init();
aoqi@0: 
aoqi@0:  private:
aoqi@0:   // Known classes in the VM
aoqi@0:   static Klass* _boolArrayKlassObj;
aoqi@0:   static Klass* _byteArrayKlassObj;
aoqi@0:   static Klass* _charArrayKlassObj;
aoqi@0:   static Klass* _intArrayKlassObj;
aoqi@0:   static Klass* _shortArrayKlassObj;
aoqi@0:   static Klass* _longArrayKlassObj;
aoqi@0:   static Klass* _singleArrayKlassObj;
aoqi@0:   static Klass* _doubleArrayKlassObj;
aoqi@0:   static Klass* _typeArrayKlassObjs[T_VOID+1];
aoqi@0: 
aoqi@0:   static Klass* _objectArrayKlassObj;
aoqi@0: 
aoqi@0:   // Known objects in the VM
aoqi@0: 
aoqi@0:   // Primitive objects
aoqi@0:   static oop _int_mirror;
aoqi@0:   static oop _float_mirror;
aoqi@0:   static oop _double_mirror;
aoqi@0:   static oop _byte_mirror;
aoqi@0:   static oop _bool_mirror;
aoqi@0:   static oop _char_mirror;
aoqi@0:   static oop _long_mirror;
aoqi@0:   static oop _short_mirror;
aoqi@0:   static oop _void_mirror;
aoqi@0: 
aoqi@0:   static oop          _main_thread_group;             // Reference to the main thread group object
aoqi@0:   static oop          _system_thread_group;           // Reference to the system thread group object
aoqi@0: 
aoqi@0:   static objArrayOop  _the_empty_class_klass_array;   // Canonicalized obj array of type java.lang.Class
aoqi@0:   static oop          _the_null_string;               // A cache of "null" as a Java string
aoqi@0:   static oop          _the_min_jint_string;          // A cache of "-2147483648" as a Java string
aoqi@0:   static LatestMethodCache* _finalizer_register_cache; // static method for registering finalizable objects
aoqi@0:   static LatestMethodCache* _loader_addClass_cache;    // method for registering loaded classes in class loader vector
aoqi@0:   static LatestMethodCache* _pd_implies_cache;         // method for checking protection domain attributes
aoqi@0: 
aoqi@0:   static Method* _throw_illegal_access_error;
aoqi@0: 
aoqi@0:   // preallocated error objects (no backtrace)
aoqi@0:   static oop          _out_of_memory_error_java_heap;
aoqi@0:   static oop          _out_of_memory_error_metaspace;
aoqi@0:   static oop          _out_of_memory_error_class_metaspace;
aoqi@0:   static oop          _out_of_memory_error_array_size;
aoqi@0:   static oop          _out_of_memory_error_gc_overhead_limit;
roland@7419:   static oop          _out_of_memory_error_realloc_objects;
aoqi@0: 
aoqi@0:   static Array<int>*       _the_empty_int_array;    // Canonicalized int array
aoqi@0:   static Array<u2>*        _the_empty_short_array;  // Canonicalized short array
aoqi@0:   static Array<Klass*>*  _the_empty_klass_array;  // Canonicalized klass obj array
aoqi@0:   static Array<Method*>* _the_empty_method_array; // Canonicalized method obj array
aoqi@0: 
aoqi@0:   static Array<Klass*>*  _the_array_interfaces_array;
aoqi@0: 
aoqi@0:   // array of preallocated error objects with backtrace
aoqi@0:   static objArrayOop   _preallocated_out_of_memory_error_array;
aoqi@0: 
aoqi@0:   // number of preallocated error objects available for use
aoqi@0:   static volatile jint _preallocated_out_of_memory_error_avail_count;
aoqi@0: 
aoqi@0:   static oop          _null_ptr_exception_instance;   // preallocated exception object
aoqi@0:   static oop          _arithmetic_exception_instance; // preallocated exception object
aoqi@0:   static oop          _virtual_machine_error_instance; // preallocated exception object
aoqi@0:   // The object used as an exception dummy when exceptions are thrown for
aoqi@0:   // the vm thread.
aoqi@0:   static oop          _vm_exception;
aoqi@0: 
jcoomes@7164:   static oop          _allocation_context_notification_obj;
jcoomes@7164: 
aoqi@0:   // The particular choice of collected heap.
aoqi@0:   static CollectedHeap* _collectedHeap;
aoqi@0: 
aoqi@0:   static intptr_t _non_oop_bits;
aoqi@0: 
aoqi@0:   // For UseCompressedOops.
aoqi@0:   static struct NarrowPtrStruct _narrow_oop;
aoqi@0:   // For UseCompressedClassPointers.
aoqi@0:   static struct NarrowPtrStruct _narrow_klass;
aoqi@0:   static address _narrow_ptrs_base;
aoqi@0: 
aoqi@0:   // array of dummy objects used with +FullGCAlot
aoqi@0:   debug_only(static objArrayOop _fullgc_alot_dummy_array;)
aoqi@0:   // index of next entry to clear
aoqi@0:   debug_only(static int         _fullgc_alot_dummy_next;)
aoqi@0: 
aoqi@0:   // Compiler/dispatch support
aoqi@0:   static int  _base_vtable_size;                      // Java vtbl size of klass Object (in words)
aoqi@0: 
aoqi@0:   // Initialization
aoqi@0:   static bool _bootstrapping;                         // true during genesis
aoqi@0:   static bool _fully_initialized;                     // true after universe_init and initialize_vtables called
aoqi@0: 
aoqi@0:   // the array of preallocated errors with backtraces
aoqi@0:   static objArrayOop  preallocated_out_of_memory_errors()     { return _preallocated_out_of_memory_error_array; }
aoqi@0: 
aoqi@0:   // generate an out of memory error; if possible using an error with preallocated backtrace;
aoqi@0:   // otherwise return the given default error.
aoqi@0:   static oop        gen_out_of_memory_error(oop default_err);
aoqi@0: 
aoqi@0:   // Historic gc information
aoqi@0:   static size_t _heap_capacity_at_last_gc;
aoqi@0:   static size_t _heap_used_at_last_gc;
aoqi@0: 
aoqi@0:   static jint initialize_heap();
aoqi@0:   static void initialize_basic_type_mirrors(TRAPS);
aoqi@0:   static void fixup_mirrors(TRAPS);
aoqi@0: 
aoqi@0:   static void reinitialize_vtable_of(KlassHandle h_k, TRAPS);
aoqi@0:   static void reinitialize_itables(TRAPS);
aoqi@0:   static void compute_base_vtable_size();             // compute vtable size of class Object
aoqi@0: 
aoqi@0:   static void genesis(TRAPS);                         // Create the initial world
aoqi@0: 
aoqi@0:   // Mirrors for primitive classes (created eagerly)
aoqi@0:   static oop check_mirror(oop m) {
aoqi@0:     assert(m != NULL, "mirror not initialized");
aoqi@0:     return m;
aoqi@0:   }
aoqi@0: 
aoqi@0:   static void     set_narrow_oop_base(address base) {
aoqi@0:     assert(UseCompressedOops, "no compressed oops?");
aoqi@0:     _narrow_oop._base    = base;
aoqi@0:   }
aoqi@0:   static void     set_narrow_klass_base(address base) {
aoqi@0:     assert(UseCompressedClassPointers, "no compressed klass ptrs?");
aoqi@0:     _narrow_klass._base   = base;
aoqi@0:   }
aoqi@0:   static void     set_narrow_oop_use_implicit_null_checks(bool use) {
aoqi@0:     assert(UseCompressedOops, "no compressed ptrs?");
aoqi@0:     _narrow_oop._use_implicit_null_checks   = use;
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Debugging
aoqi@0:   static int _verify_count;                           // number of verifies done
aoqi@0:   // True during call to verify().  Should only be set/cleared in verify().
aoqi@0:   static bool _verify_in_progress;
aoqi@0: 
aoqi@0:   static void compute_verify_oop_data();
aoqi@0: 
aoqi@0:  public:
aoqi@0:   // Known classes in the VM
aoqi@0:   static Klass* boolArrayKlassObj()                 { return _boolArrayKlassObj;   }
aoqi@0:   static Klass* byteArrayKlassObj()                 { return _byteArrayKlassObj;   }
aoqi@0:   static Klass* charArrayKlassObj()                 { return _charArrayKlassObj;   }
aoqi@0:   static Klass* intArrayKlassObj()                  { return _intArrayKlassObj;    }
aoqi@0:   static Klass* shortArrayKlassObj()                { return _shortArrayKlassObj;  }
aoqi@0:   static Klass* longArrayKlassObj()                 { return _longArrayKlassObj;   }
aoqi@0:   static Klass* singleArrayKlassObj()               { return _singleArrayKlassObj; }
aoqi@0:   static Klass* doubleArrayKlassObj()               { return _doubleArrayKlassObj; }
aoqi@0: 
aoqi@0:   static Klass* objectArrayKlassObj() {
aoqi@0:     return _objectArrayKlassObj;
aoqi@0:   }
aoqi@0: 
aoqi@0:   static Klass* typeArrayKlassObj(BasicType t) {
aoqi@0:     assert((uint)t < T_VOID+1, err_msg("range check for type: %s", type2name(t)));
aoqi@0:     assert(_typeArrayKlassObjs[t] != NULL, "domain check");
aoqi@0:     return _typeArrayKlassObjs[t];
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Known objects in the VM
aoqi@0:   static oop int_mirror()                   { return check_mirror(_int_mirror); }
aoqi@0:   static oop float_mirror()                 { return check_mirror(_float_mirror); }
aoqi@0:   static oop double_mirror()                { return check_mirror(_double_mirror); }
aoqi@0:   static oop byte_mirror()                  { return check_mirror(_byte_mirror); }
aoqi@0:   static oop bool_mirror()                  { return check_mirror(_bool_mirror); }
aoqi@0:   static oop char_mirror()                  { return check_mirror(_char_mirror); }
aoqi@0:   static oop long_mirror()                  { return check_mirror(_long_mirror); }
aoqi@0:   static oop short_mirror()                 { return check_mirror(_short_mirror); }
aoqi@0:   static oop void_mirror()                  { return check_mirror(_void_mirror); }
aoqi@0: 
aoqi@0:   // table of same
aoqi@0:   static oop _mirrors[T_VOID+1];
aoqi@0: 
aoqi@0:   static oop java_mirror(BasicType t) {
aoqi@0:     assert((uint)t < T_VOID+1, "range check");
aoqi@0:     return check_mirror(_mirrors[t]);
aoqi@0:   }
aoqi@0:   static oop      main_thread_group()                 { return _main_thread_group; }
aoqi@0:   static void set_main_thread_group(oop group)        { _main_thread_group = group;}
aoqi@0: 
aoqi@0:   static oop      system_thread_group()               { return _system_thread_group; }
aoqi@0:   static void set_system_thread_group(oop group)      { _system_thread_group = group;}
aoqi@0: 
aoqi@0:   static objArrayOop  the_empty_class_klass_array ()  { return _the_empty_class_klass_array;   }
aoqi@0:   static Array<Klass*>* the_array_interfaces_array() { return _the_array_interfaces_array;   }
aoqi@0:   static oop          the_null_string()               { return _the_null_string;               }
aoqi@0:   static oop          the_min_jint_string()          { return _the_min_jint_string;          }
aoqi@0: 
aoqi@0:   static Method*      finalizer_register_method()     { return _finalizer_register_cache->get_method(); }
aoqi@0:   static Method*      loader_addClass_method()        { return _loader_addClass_cache->get_method(); }
aoqi@0: 
aoqi@0:   static Method*      protection_domain_implies_method() { return _pd_implies_cache->get_method(); }
aoqi@0: 
aoqi@0:   static oop          null_ptr_exception_instance()   { return _null_ptr_exception_instance;   }
aoqi@0:   static oop          arithmetic_exception_instance() { return _arithmetic_exception_instance; }
aoqi@0:   static oop          virtual_machine_error_instance() { return _virtual_machine_error_instance; }
aoqi@0:   static oop          vm_exception()                  { return _vm_exception; }
jcoomes@7164: 
jcoomes@7164:   static inline oop   allocation_context_notification_obj();
jcoomes@7164:   static inline void  set_allocation_context_notification_obj(oop obj);
jcoomes@7164: 
aoqi@0:   static Method*      throw_illegal_access_error()    { return _throw_illegal_access_error; }
aoqi@0: 
aoqi@0:   static Array<int>*       the_empty_int_array()    { return _the_empty_int_array; }
aoqi@0:   static Array<u2>*        the_empty_short_array()  { return _the_empty_short_array; }
aoqi@0:   static Array<Method*>* the_empty_method_array() { return _the_empty_method_array; }
aoqi@0:   static Array<Klass*>*  the_empty_klass_array()  { return _the_empty_klass_array; }
aoqi@0: 
aoqi@0:   // OutOfMemoryError support. Returns an error with the required message. The returned error
aoqi@0:   // may or may not have a backtrace. If error has a backtrace then the stack trace is already
aoqi@0:   // filled in.
aoqi@0:   static oop out_of_memory_error_java_heap()          { return gen_out_of_memory_error(_out_of_memory_error_java_heap);  }
aoqi@0:   static oop out_of_memory_error_metaspace()          { return gen_out_of_memory_error(_out_of_memory_error_metaspace);   }
aoqi@0:   static oop out_of_memory_error_class_metaspace()    { return gen_out_of_memory_error(_out_of_memory_error_class_metaspace);   }
aoqi@0:   static oop out_of_memory_error_array_size()         { return gen_out_of_memory_error(_out_of_memory_error_array_size); }
aoqi@0:   static oop out_of_memory_error_gc_overhead_limit()  { return gen_out_of_memory_error(_out_of_memory_error_gc_overhead_limit);  }
roland@7419:   static oop out_of_memory_error_realloc_objects()    { return gen_out_of_memory_error(_out_of_memory_error_realloc_objects);  }
aoqi@0: 
aoqi@0:   // Accessors needed for fast allocation
aoqi@0:   static Klass** boolArrayKlassObj_addr()           { return &_boolArrayKlassObj;   }
aoqi@0:   static Klass** byteArrayKlassObj_addr()           { return &_byteArrayKlassObj;   }
aoqi@0:   static Klass** charArrayKlassObj_addr()           { return &_charArrayKlassObj;   }
aoqi@0:   static Klass** intArrayKlassObj_addr()            { return &_intArrayKlassObj;    }
aoqi@0:   static Klass** shortArrayKlassObj_addr()          { return &_shortArrayKlassObj;  }
aoqi@0:   static Klass** longArrayKlassObj_addr()           { return &_longArrayKlassObj;   }
aoqi@0:   static Klass** singleArrayKlassObj_addr()         { return &_singleArrayKlassObj; }
aoqi@0:   static Klass** doubleArrayKlassObj_addr()         { return &_doubleArrayKlassObj; }
aoqi@0:   static Klass** objectArrayKlassObj_addr()         { return &_objectArrayKlassObj; }
aoqi@0: 
aoqi@0:   // The particular choice of collected heap.
aoqi@0:   static CollectedHeap* heap() { return _collectedHeap; }
aoqi@0: 
aoqi@0:   // For UseCompressedOops
aoqi@0:   // Narrow Oop encoding mode:
aoqi@0:   // 0 - Use 32-bits oops without encoding when
aoqi@0:   //     NarrowOopHeapBaseMin + heap_size < 4Gb
aoqi@0:   // 1 - Use zero based compressed oops with encoding when
aoqi@0:   //     NarrowOopHeapBaseMin + heap_size < 32Gb
aoqi@0:   // 2 - Use compressed oops with heap base + encoding.
aoqi@0:   enum NARROW_OOP_MODE {
aoqi@0:     UnscaledNarrowOop  = 0,
aoqi@0:     ZeroBasedNarrowOop = 1,
aoqi@0:     HeapBasedNarrowOop = 2
aoqi@0:   };
aoqi@0:   static NARROW_OOP_MODE narrow_oop_mode();
aoqi@0:   static const char* narrow_oop_mode_to_string(NARROW_OOP_MODE mode);
aoqi@0:   static char*    preferred_heap_base(size_t heap_size, size_t alignment, NARROW_OOP_MODE mode);
aoqi@0:   static char*    preferred_metaspace_base(size_t heap_size, NARROW_OOP_MODE mode);
aoqi@0:   static address  narrow_oop_base()                       { return  _narrow_oop._base; }
aoqi@0:   static bool  is_narrow_oop_base(void* addr)             { return (narrow_oop_base() == (address)addr); }
aoqi@0:   static int      narrow_oop_shift()                      { return  _narrow_oop._shift; }
aoqi@0:   static bool     narrow_oop_use_implicit_null_checks()   { return  _narrow_oop._use_implicit_null_checks; }
aoqi@0: 
aoqi@0:   // For UseCompressedClassPointers
aoqi@0:   static address  narrow_klass_base()                     { return  _narrow_klass._base; }
aoqi@0:   static bool  is_narrow_klass_base(void* addr)           { return (narrow_klass_base() == (address)addr); }
aoqi@0:   static int      narrow_klass_shift()                    { return  _narrow_klass._shift; }
aoqi@0:   static bool     narrow_klass_use_implicit_null_checks() { return  _narrow_klass._use_implicit_null_checks; }
aoqi@0: 
aoqi@0:   static address* narrow_ptrs_base_addr()                 { return &_narrow_ptrs_base; }
aoqi@0:   static void     set_narrow_ptrs_base(address a)         { _narrow_ptrs_base = a; }
aoqi@0:   static address  narrow_ptrs_base()                      { return _narrow_ptrs_base; }
aoqi@0: 
aoqi@0:   // this is set in vm_version on sparc (and then reset in universe afaict)
aoqi@0:   static void     set_narrow_oop_shift(int shift)         {
aoqi@0:     _narrow_oop._shift   = shift;
aoqi@0:   }
aoqi@0: 
aoqi@0:   static void     set_narrow_klass_shift(int shift)       {
aoqi@0:     assert(shift == 0 || shift == LogKlassAlignmentInBytes, "invalid shift for klass ptrs");
aoqi@0:     _narrow_klass._shift   = shift;
aoqi@0:   }
aoqi@0: 
aoqi@0:   // Reserve Java heap and determine CompressedOops mode
aoqi@0:   static ReservedSpace reserve_heap(size_t heap_size, size_t alignment);
aoqi@0: 
aoqi@0:   // Historic gc information
aoqi@0:   static size_t get_heap_capacity_at_last_gc()         { return _heap_capacity_at_last_gc; }
aoqi@0:   static size_t get_heap_free_at_last_gc()             { return _heap_capacity_at_last_gc - _heap_used_at_last_gc; }
aoqi@0:   static size_t get_heap_used_at_last_gc()             { return _heap_used_at_last_gc; }
aoqi@0:   static void update_heap_info_at_gc();
aoqi@0: 
aoqi@0:   // Testers
aoqi@0:   static bool is_bootstrapping()                      { return _bootstrapping; }
aoqi@0:   static bool is_fully_initialized()                  { return _fully_initialized; }
aoqi@0: 
aoqi@0:   static inline bool element_type_should_be_aligned(BasicType type);
aoqi@0:   static inline bool field_type_should_be_aligned(BasicType type);
aoqi@0:   static bool        on_page_boundary(void* addr);
aoqi@0:   static bool        should_fill_in_stack_trace(Handle throwable);
aoqi@0:   static void check_alignment(uintx size, uintx alignment, const char* name);
aoqi@0: 
aoqi@0:   // Finalizer support.
aoqi@0:   static void run_finalizers_on_exit();
aoqi@0: 
aoqi@0:   // Iteration
aoqi@0: 
aoqi@0:   // Apply "f" to the addresses of all the direct heap pointers maintained
aoqi@0:   // as static fields of "Universe".
aoqi@0:   static void oops_do(OopClosure* f, bool do_all = false);
aoqi@0: 
aoqi@0:   // CDS support
aoqi@0:   static void serialize(SerializeClosure* f, bool do_all = false);
aoqi@0: 
aoqi@0:   // Apply "f" to all klasses for basic types (classes not present in
aoqi@0:   // SystemDictionary).
aoqi@0:   static void basic_type_classes_do(void f(Klass*));
aoqi@0: 
aoqi@0:   // For sharing -- fill in a list of known vtable pointers.
aoqi@0:   static void init_self_patching_vtbl_list(void** list, int count);
aoqi@0: 
aoqi@0:   // Debugging
aoqi@0:   static bool verify_in_progress() { return _verify_in_progress; }
aoqi@0:   static void verify(VerifyOption option, const char* prefix, bool silent = VerifySilently);
aoqi@0:   static void verify(const char* prefix, bool silent = VerifySilently) {
aoqi@0:     verify(VerifyOption_Default, prefix, silent);
aoqi@0:   }
aoqi@0:   static void verify(bool silent = VerifySilently) {
aoqi@0:     verify("", silent);
aoqi@0:   }
aoqi@0: 
aoqi@0:   static int  verify_count()       { return _verify_count; }
aoqi@0:   // The default behavior is to call print_on() on gclog_or_tty.
aoqi@0:   static void print();
aoqi@0:   // The extended parameter determines which method on the heap will
aoqi@0:   // be called: print_on() (extended == false) or print_extended_on()
aoqi@0:   // (extended == true).
aoqi@0:   static void print_on(outputStream* st, bool extended = false);
aoqi@0:   static void print_heap_at_SIGBREAK();
aoqi@0:   static void print_heap_before_gc() { print_heap_before_gc(gclog_or_tty); }
aoqi@0:   static void print_heap_after_gc()  { print_heap_after_gc(gclog_or_tty); }
aoqi@0:   static void print_heap_before_gc(outputStream* st, bool ignore_extended = false);
aoqi@0:   static void print_heap_after_gc(outputStream* st, bool ignore_extended = false);
aoqi@0: 
aoqi@0:   // Change the number of dummy objects kept reachable by the full gc dummy
aoqi@0:   // array; this should trigger relocation in a sliding compaction collector.
aoqi@0:   debug_only(static bool release_fullgc_alot_dummy();)
aoqi@0:   // The non-oop pattern (see compiledIC.hpp, etc)
aoqi@0:   static void*   non_oop_word();
aoqi@0: 
aoqi@0:   // Oop verification (see MacroAssembler::verify_oop)
aoqi@0:   static uintptr_t verify_oop_mask()          PRODUCT_RETURN0;
aoqi@0:   static uintptr_t verify_oop_bits()          PRODUCT_RETURN0;
aoqi@0:   static uintptr_t verify_mark_bits()         PRODUCT_RETURN0;
aoqi@0:   static uintptr_t verify_mark_mask()         PRODUCT_RETURN0;
aoqi@0: 
aoqi@0:   // Flushing and deoptimization
aoqi@0:   static void flush_dependents_on(instanceKlassHandle dependee);
aoqi@0:   static void flush_dependents_on(Handle call_site, Handle method_handle);
aoqi@0: #ifdef HOTSWAP
aoqi@0:   // Flushing and deoptimization in case of evolution
aoqi@0:   static void flush_evol_dependents_on(instanceKlassHandle dependee);
aoqi@0: #endif // HOTSWAP
aoqi@0:   // Support for fullspeed debugging
aoqi@0:   static void flush_dependents_on_method(methodHandle dependee);
aoqi@0: 
aoqi@0:   // Compiler support
aoqi@0:   static int base_vtable_size()               { return _base_vtable_size; }
aoqi@0: };
aoqi@0: 
aoqi@0: class DeferredObjAllocEvent : public CHeapObj<mtInternal> {
aoqi@0:   private:
aoqi@0:     oop    _oop;
aoqi@0:     size_t _bytesize;
aoqi@0:     jint   _arena_id;
aoqi@0: 
aoqi@0:   public:
aoqi@0:     DeferredObjAllocEvent(const oop o, const size_t s, const jint id) {
aoqi@0:       _oop      = o;
aoqi@0:       _bytesize = s;
aoqi@0:       _arena_id = id;
aoqi@0:     }
aoqi@0: 
aoqi@0:     ~DeferredObjAllocEvent() {
aoqi@0:     }
aoqi@0: 
aoqi@0:     jint   arena_id() { return _arena_id; }
aoqi@0:     size_t bytesize() { return _bytesize; }
aoqi@0:     oop    get_oop()  { return _oop; }
aoqi@0: };
aoqi@0: 
aoqi@0: #endif // SHARE_VM_MEMORY_UNIVERSE_HPP