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
34 enum 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
40 template<> struct IsRegisteredEnum<CodeState> : public TrueType {};
41
42 typedef struct {
43 AOTCompiledMethod* _aot;
44 CodeState _state; // State change cases: not_set->in_use, not_set->invalid
45 } CodeToAMethod;
46
47 class ClassLoaderData;
48
49 class AOTClass {
50 public:
51 ClassLoaderData* _classloader;
52 };
53
54 typedef 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
63 typedef 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
72 typedef 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
80 typedef struct {
81 int _version;
82 int _class_count;
83 int _method_count;
84 int _metaspace_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
94 typedef 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
118 class 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);
132 public:
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
165 class 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** _metaspace_got;
188 Metadata** _metadata_got;
189 oop* _oop_got;
190
191 int _metaspace_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);
230 public:
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 >= &_metaspace_got[0] && p < &_metaspace_got[_metaspace_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