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