1 /*
2 * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
447 // Reserve Java heap and determine CompressedOops mode
448 static ReservedSpace reserve_heap(size_t heap_size, size_t alignment);
449
450 // Historic gc information
451 static size_t get_heap_capacity_at_last_gc() { return _heap_capacity_at_last_gc; }
452 static size_t get_heap_free_at_last_gc() { return _heap_capacity_at_last_gc - _heap_used_at_last_gc; }
453 static size_t get_heap_used_at_last_gc() { return _heap_used_at_last_gc; }
454 static void update_heap_info_at_gc();
455
456 // Testers
457 static bool is_bootstrapping() { return _bootstrapping; }
458 static bool is_module_initialized() { return _module_initialized; }
459 static bool is_fully_initialized() { return _fully_initialized; }
460
461 static inline bool element_type_should_be_aligned(BasicType type);
462 static inline bool field_type_should_be_aligned(BasicType type);
463 static bool on_page_boundary(void* addr);
464 static bool should_fill_in_stack_trace(Handle throwable);
465 static void check_alignment(uintx size, uintx alignment, const char* name);
466
467 // Finalizer support.
468 static void run_finalizers_on_exit();
469
470 // Iteration
471
472 // Apply "f" to the addresses of all the direct heap pointers maintained
473 // as static fields of "Universe".
474 static void oops_do(OopClosure* f, bool do_all = false);
475
476 // CDS support
477 static void serialize(SerializeClosure* f, bool do_all = false);
478
479 // Apply "f" to all klasses for basic types (classes not present in
480 // SystemDictionary).
481 static void basic_type_classes_do(void f(Klass*));
482 static void metaspace_pointers_do(MetaspaceClosure* it);
483
484 // Debugging
485 enum VERIFY_FLAGS {
486 Verify_Threads = 1,
487 Verify_Heap = 2,
488 Verify_SymbolTable = 4,
489 Verify_StringTable = 8,
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1 /*
2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
447 // Reserve Java heap and determine CompressedOops mode
448 static ReservedSpace reserve_heap(size_t heap_size, size_t alignment);
449
450 // Historic gc information
451 static size_t get_heap_capacity_at_last_gc() { return _heap_capacity_at_last_gc; }
452 static size_t get_heap_free_at_last_gc() { return _heap_capacity_at_last_gc - _heap_used_at_last_gc; }
453 static size_t get_heap_used_at_last_gc() { return _heap_used_at_last_gc; }
454 static void update_heap_info_at_gc();
455
456 // Testers
457 static bool is_bootstrapping() { return _bootstrapping; }
458 static bool is_module_initialized() { return _module_initialized; }
459 static bool is_fully_initialized() { return _fully_initialized; }
460
461 static inline bool element_type_should_be_aligned(BasicType type);
462 static inline bool field_type_should_be_aligned(BasicType type);
463 static bool on_page_boundary(void* addr);
464 static bool should_fill_in_stack_trace(Handle throwable);
465 static void check_alignment(uintx size, uintx alignment, const char* name);
466
467 // Iteration
468
469 // Apply "f" to the addresses of all the direct heap pointers maintained
470 // as static fields of "Universe".
471 static void oops_do(OopClosure* f, bool do_all = false);
472
473 // CDS support
474 static void serialize(SerializeClosure* f, bool do_all = false);
475
476 // Apply "f" to all klasses for basic types (classes not present in
477 // SystemDictionary).
478 static void basic_type_classes_do(void f(Klass*));
479 static void metaspace_pointers_do(MetaspaceClosure* it);
480
481 // Debugging
482 enum VERIFY_FLAGS {
483 Verify_Threads = 1,
484 Verify_Heap = 2,
485 Verify_SymbolTable = 4,
486 Verify_StringTable = 8,
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