aotCodeHeap.hpp revision 13477:4d61110c6046 
1/*
2 * Copyright (c) 2016, 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 */
23
24#ifndef SHARE_VM_AOT_AOTCODEHEAP_HPP
25#define SHARE_VM_AOT_AOTCODEHEAP_HPP
26
27#include "aot/aotCompiledMethod.hpp"
28#include "classfile/symbolTable.hpp"
29#include "metaprogramming/integralConstant.hpp"
30#include "metaprogramming/isRegisteredEnum.hpp"
31#include "oops/metadata.hpp"
32#include "oops/method.hpp"
33
34enum CodeState {
35  not_set = 0, // _aot fields is not set yet
36  in_use  = 1, // _aot field is set to corresponding AOTCompiledMethod
37  invalid = 2  // AOT code is invalidated because dependencies failed
38};
39
40template<> struct IsRegisteredEnum<CodeState> : public TrueType {};
41
42typedef struct {
43  AOTCompiledMethod* _aot;
44  CodeState _state; // State change cases: not_set->in_use, not_set->invalid
45} CodeToAMethod;
46
47class ClassLoaderData;
48
49class AOTClass {
50public:
51  ClassLoaderData* _classloader;
52};
53
54typedef struct {
55  int _name_offset;
56  int _code_offset;
57  int _meta_offset;
58  int _metadata_got_offset;
59  int _metadata_got_size;
60  int _code_id;
61} AOTMethodOffsets;
62
63typedef struct {
64  const char* _name;
65  address     _code;
66  aot_metadata* _meta;
67  jlong*      _state_adr;
68  address     _metadata_table;
69  int         _metadata_size;
70} AOTMethodData;
71
72typedef struct {
73  int _got_index;
74  int _class_id;
75  int _compiled_methods_offset;
76  int _dependent_methods_offset;
77  uint64_t _fingerprint;
78} AOTKlassData;
79
80typedef struct {
81  int _version;
82  int _class_count;
83  int _method_count;
84  int _klasses_got_size;
85  int _metadata_got_size;
86  int _oop_got_size;
87  int _jvm_version_offset;
88
89  enum {
90    AOT_SHARED_VERSION = 1
91  };
92} AOTHeader;
93
94typedef struct {
95  enum { CONFIG_SIZE = 7 * jintSize + 11 };
96  // 7 int values
97  int _config_size;
98  int _narrowOopShift;
99  int _narrowKlassShift;
100  int _contendedPaddingWidth;
101  int _fieldsAllocationStyle;
102  int _objectAlignment;
103  int _codeSegmentSize;
104  // byte[11] array map to boolean values here
105  bool _debug_VM;
106  bool _useCompressedOops;
107  bool _useCompressedClassPointers;
108  bool _compactFields;
109  bool _useG1GC;
110  bool _useTLAB;
111  bool _useBiasedLocking;
112  bool _tieredAOT;
113  bool _enableContended;
114  bool _restrictContended;
115  bool _omitAssertions;
116} AOTConfiguration;
117
118class AOTLib : public CHeapObj<mtCode> {
119  static bool _narrow_oop_shift_initialized;
120  static int _narrow_oop_shift;
121  static int _narrow_klass_shift;
122
123  bool _valid;
124  void* _dl_handle;
125  const int _dso_id;
126  const char* _name;
127  // VM configuration during AOT compilation
128  AOTConfiguration* _config;
129  AOTHeader* _header;
130
131  void handle_config_error(const char* format, ...) ATTRIBUTE_PRINTF(2, 3);
132public:
133  AOTLib(void* handle, const char* name, int dso_id);
134  virtual ~AOTLib();
135  static int  narrow_oop_shift() { return _narrow_oop_shift; }
136  static int  narrow_klass_shift() { return _narrow_klass_shift; }
137  static bool narrow_oop_shift_initialized() { return _narrow_oop_shift_initialized; }
138
139  bool is_valid() const {
140    return _valid;
141  }
142  const char* name() const {
143    return _name;
144  }
145  void* dl_handle() const {
146    return _dl_handle;
147  }
148  int id() const {
149    return _dso_id;
150  }
151  AOTHeader* header() const {
152    return _header;
153  }
154  AOTConfiguration* config() const {
155    return _config;
156  }
157  void verify_config();
158  void verify_flag(bool aot_flag, bool flag, const char* name);
159  void verify_flag(int  aot_flag, int  flag, const char* name);
160
161  address load_symbol(const char *name);
162};
163
164
165class AOTCodeHeap : public CodeHeap {
166  AOTLib* _lib;
167  int _aot_id;
168
169  int _class_count;
170  int _method_count;
171  AOTClass* _classes;
172  CodeToAMethod* _code_to_aot;
173
174  address _code_space;
175  address _code_segments;
176  jlong*  _method_state;
177
178
179  // Collect metaspace info: names -> address in .got section
180  const char* _metaspace_names;
181  address _method_metadata;
182
183  address _methods_offsets;
184  address _klasses_offsets;
185  address _dependencies;
186
187  Metadata** _klasses_got;
188  Metadata** _metadata_got;
189  oop*    _oop_got;
190
191  int _klasses_got_size;
192  int _metadata_got_size;
193  int _oop_got_size;
194
195  // Collect stubs info
196  int* _stubs_offsets;
197
198  bool _lib_symbols_initialized;
199
200  void adjust_boundaries(AOTCompiledMethod* method) {
201    char* low = (char*)method->code_begin();
202    if (low < low_boundary()) {
203      _memory.set_low_boundary(low);
204      _memory.set_low(low);
205    }
206    char* high = (char *)method->code_end();
207    if (high > high_boundary()) {
208      _memory.set_high_boundary(high);
209      _memory.set_high(high);
210    }
211    assert(_method_count > 0, "methods count should be set already");
212  }
213
214  void register_stubs();
215
216  void link_shared_runtime_symbols();
217  void link_stub_routines_symbols();
218  void link_os_symbols();
219  void link_graal_runtime_symbols();
220
221  void link_global_lib_symbols();
222  void link_primitive_array_klasses();
223  void publish_aot(const methodHandle& mh, AOTMethodData* method_data, int code_id);
224
225
226  AOTCompiledMethod* next_in_use_at(int index) const;
227
228  // Find klass in SystemDictionary for aot metadata.
229  static Klass* lookup_klass(const char* name, int len, const Method* method, Thread* THREAD);
230public:
231  AOTCodeHeap(AOTLib* lib);
232  virtual ~AOTCodeHeap();
233
234  AOTCompiledMethod* find_aot(address p) const;
235
236  virtual void* find_start(void* p)     const;
237  virtual CodeBlob* find_blob_unsafe(void* start) const;
238  virtual void* first() const;
239  virtual void* next(void *p) const;
240
241  AOTKlassData* find_klass(InstanceKlass* ik);
242  bool load_klass_data(InstanceKlass* ik, Thread* thread);
243  Klass* get_klass_from_got(const char* klass_name, int klass_len, const Method* method);
244  void sweep_dependent_methods(AOTKlassData* klass_data);
245  bool is_dependent_method(Klass* dependee, AOTCompiledMethod* aot);
246
247  const char* get_name_at(int offset) {
248    return _metaspace_names + offset;
249  }
250
251  void oops_do(OopClosure* f);
252  void metadata_do(void f(Metadata*));
253  void got_metadata_do(void f(Metadata*));
254
255#ifdef ASSERT
256  bool got_contains(Metadata **p) {
257    return (p >= &_metadata_got[0] && p < &_metadata_got[_metadata_got_size]) ||
258           (p >= &_klasses_got[0] && p < &_klasses_got[_klasses_got_size]);
259  }
260#endif
261
262  int dso_id() const { return _lib->id(); }
263  int aot_id() const { return _aot_id; }
264
265  int method_count() { return _method_count; }
266
267  AOTCompiledMethod* get_code_desc_at_index(int index) {
268    if (index < _method_count && _code_to_aot[index]._state == in_use) {
269        AOTCompiledMethod* m = _code_to_aot[index]._aot;
270        assert(m != NULL, "AOT method should be set");
271        if (!m->is_runtime_stub()) {
272          return m;
273        }
274    }
275    return NULL;
276  }
277
278  static Method* find_method(Klass* klass, Thread* thread, const char* method_name);
279
280  void cleanup_inline_caches();
281
282  DEBUG_ONLY( int verify_icholder_relocations(); )
283
284  void flush_evol_dependents_on(InstanceKlass* dependee);
285
286  void alive_methods_do(void f(CompiledMethod* nm));
287
288#ifndef PRODUCT
289  static int klasses_seen;
290  static int aot_klasses_found;
291  static int aot_klasses_fp_miss;
292  static int aot_klasses_cl_miss;
293  static int aot_methods_found;
294
295  static void print_statistics();
296#endif
297};
298
299#endif // SHARE_VM_AOT_AOTCODEHEAP_HPP
300