Mercurial > hg > graal-compiler
annotate src/share/vm/c1/c1_GraphBuilder.hpp @ 1751:2528b5bd749c
6980262: Memory leak when exception is thrown in static initializer
Summary: Use resource memory instead of c-heap for the exception message
Reviewed-by: phh, jmasa
author | kamg |
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date | Fri, 27 Aug 2010 15:05:28 -0400 |
parents | b812ff5abc73 |
children | d5d065957597 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 class MemoryBuffer; | |
26 | |
27 class GraphBuilder VALUE_OBJ_CLASS_SPEC { | |
28 private: | |
29 // Per-scope data. These are pushed and popped as we descend into | |
30 // inlined methods. Currently in order to generate good code in the | |
31 // inliner we have to attempt to inline methods directly into the | |
32 // basic block we are parsing; this adds complexity. | |
33 class ScopeData: public CompilationResourceObj { | |
34 private: | |
35 ScopeData* _parent; | |
36 // bci-to-block mapping | |
37 BlockList* _bci2block; | |
38 // Scope | |
39 IRScope* _scope; | |
40 // Whether this scope or any parent scope has exception handlers | |
41 bool _has_handler; | |
42 // The bytecodes | |
43 ciBytecodeStream* _stream; | |
44 | |
45 // Work list | |
46 BlockList* _work_list; | |
47 | |
48 // Maximum inline size for this scope | |
49 intx _max_inline_size; | |
50 // Expression stack depth at point where inline occurred | |
51 int _caller_stack_size; | |
52 | |
53 // The continuation point for the inline. Currently only used in | |
54 // multi-block inlines, but eventually would like to use this for | |
55 // all inlines for uniformity and simplicity; in this case would | |
56 // get the continuation point from the BlockList instead of | |
57 // fabricating it anew because Invokes would be considered to be | |
58 // BlockEnds. | |
59 BlockBegin* _continuation; | |
60 | |
61 // Without return value of inlined method on stack | |
62 ValueStack* _continuation_state; | |
63 | |
64 // Was this ScopeData created only for the parsing and inlining of | |
65 // a jsr? | |
66 bool _parsing_jsr; | |
67 // We track the destination bci of the jsr only to determine | |
68 // bailout conditions, since we only handle a subset of all of the | |
69 // possible jsr-ret control structures. Recursive invocations of a | |
70 // jsr are disallowed by the verifier. | |
71 int _jsr_entry_bci; | |
72 // We need to track the local variable in which the return address | |
73 // was stored to ensure we can handle inlining the jsr, because we | |
74 // don't handle arbitrary jsr/ret constructs. | |
75 int _jsr_ret_addr_local; | |
76 // If we are parsing a jsr, the continuation point for rets | |
77 BlockBegin* _jsr_continuation; | |
78 // Cloned XHandlers for jsr-related ScopeDatas | |
79 XHandlers* _jsr_xhandlers; | |
80 | |
81 // Number of returns seen in this scope | |
82 int _num_returns; | |
83 | |
84 // In order to generate profitable code for inlining, we currently | |
85 // have to perform an optimization for single-block inlined | |
86 // methods where we continue parsing into the same block. This | |
87 // allows us to perform CSE across inlined scopes and to avoid | |
88 // storing parameters to the stack. Having a global register | |
89 // allocator and being able to perform global CSE would allow this | |
90 // code to be removed and thereby simplify the inliner. | |
91 BlockBegin* _cleanup_block; // The block to which the return was added | |
92 Instruction* _cleanup_return_prev; // Instruction before return instruction | |
93 ValueStack* _cleanup_state; // State of that block (not yet pinned) | |
94 | |
95 public: | |
96 ScopeData(ScopeData* parent); | |
97 | |
98 ScopeData* parent() const { return _parent; } | |
99 | |
100 BlockList* bci2block() const { return _bci2block; } | |
101 void set_bci2block(BlockList* bci2block) { _bci2block = bci2block; } | |
102 | |
103 // NOTE: this has a different effect when parsing jsrs | |
104 BlockBegin* block_at(int bci); | |
105 | |
106 IRScope* scope() const { return _scope; } | |
107 // Has side-effect of setting has_handler flag | |
108 void set_scope(IRScope* scope); | |
109 | |
110 // Whether this or any parent scope has exception handlers | |
111 bool has_handler() const { return _has_handler; } | |
112 void set_has_handler() { _has_handler = true; } | |
113 | |
114 // Exception handlers list to be used for this scope | |
115 XHandlers* xhandlers() const; | |
116 | |
117 // How to get a block to be parsed | |
118 void add_to_work_list(BlockBegin* block); | |
119 // How to remove the next block to be parsed; returns NULL if none left | |
120 BlockBegin* remove_from_work_list(); | |
121 // Indicates parse is over | |
122 bool is_work_list_empty() const; | |
123 | |
124 ciBytecodeStream* stream() { return _stream; } | |
125 void set_stream(ciBytecodeStream* stream) { _stream = stream; } | |
126 | |
127 intx max_inline_size() const { return _max_inline_size; } | |
128 int caller_stack_size() const; | |
129 | |
130 BlockBegin* continuation() const { return _continuation; } | |
131 void set_continuation(BlockBegin* cont) { _continuation = cont; } | |
132 | |
133 ValueStack* continuation_state() const { return _continuation_state; } | |
134 void set_continuation_state(ValueStack* s) { _continuation_state = s; } | |
135 | |
136 // Indicates whether this ScopeData was pushed only for the | |
137 // parsing and inlining of a jsr | |
138 bool parsing_jsr() const { return _parsing_jsr; } | |
139 void set_parsing_jsr() { _parsing_jsr = true; } | |
140 int jsr_entry_bci() const { return _jsr_entry_bci; } | |
141 void set_jsr_entry_bci(int bci) { _jsr_entry_bci = bci; } | |
142 void set_jsr_return_address_local(int local_no){ _jsr_ret_addr_local = local_no; } | |
143 int jsr_return_address_local() const { return _jsr_ret_addr_local; } | |
144 // Must be called after scope is set up for jsr ScopeData | |
145 void setup_jsr_xhandlers(); | |
146 | |
147 // The jsr continuation is only used when parsing_jsr is true, and | |
148 // is different from the "normal" continuation since we can end up | |
149 // doing a return (rather than a ret) from within a subroutine | |
150 BlockBegin* jsr_continuation() const { return _jsr_continuation; } | |
151 void set_jsr_continuation(BlockBegin* cont) { _jsr_continuation = cont; } | |
152 | |
153 int num_returns(); | |
154 void incr_num_returns(); | |
155 | |
156 void set_inline_cleanup_info(BlockBegin* block, | |
157 Instruction* return_prev, | |
158 ValueStack* return_state); | |
159 BlockBegin* inline_cleanup_block() const { return _cleanup_block; } | |
160 Instruction* inline_cleanup_return_prev() const{ return _cleanup_return_prev; } | |
161 ValueStack* inline_cleanup_state() const { return _cleanup_state; } | |
162 }; | |
163 | |
164 // for all GraphBuilders | |
165 static bool _can_trap[Bytecodes::number_of_java_codes]; | |
166 static bool _is_async[Bytecodes::number_of_java_codes]; | |
167 | |
168 // for each instance of GraphBuilder | |
169 ScopeData* _scope_data; // Per-scope data; used for inlining | |
170 Compilation* _compilation; // the current compilation | |
171 ValueMap* _vmap; // the map of values encountered (for CSE) | |
172 MemoryBuffer* _memory; | |
173 const char* _inline_bailout_msg; // non-null if most recent inline attempt failed | |
174 int _instruction_count; // for bailing out in pathological jsr/ret cases | |
175 BlockBegin* _start; // the start block | |
176 BlockBegin* _osr_entry; // the osr entry block block | |
177 ValueStack* _initial_state; // The state for the start block | |
178 | |
179 // for each call to connect_to_end; can also be set by inliner | |
180 BlockBegin* _block; // the current block | |
181 ValueStack* _state; // the current execution state | |
182 ValueStack* _exception_state; // state that will be used by handle_exception | |
183 Instruction* _last; // the last instruction added | |
184 bool _skip_block; // skip processing of the rest of this block | |
185 | |
186 // accessors | |
187 ScopeData* scope_data() const { return _scope_data; } | |
188 Compilation* compilation() const { return _compilation; } | |
189 BlockList* bci2block() const { return scope_data()->bci2block(); } | |
190 ValueMap* vmap() const { assert(UseLocalValueNumbering, "should not access otherwise"); return _vmap; } | |
191 bool has_handler() const { return scope_data()->has_handler(); } | |
192 | |
193 BlockBegin* block() const { return _block; } | |
194 ValueStack* state() const { return _state; } | |
195 void set_state(ValueStack* state) { _state = state; } | |
196 IRScope* scope() const { return scope_data()->scope(); } | |
197 ValueStack* exception_state() const { return _exception_state; } | |
198 void set_exception_state(ValueStack* s) { _exception_state = s; } | |
199 ciMethod* method() const { return scope()->method(); } | |
200 ciBytecodeStream* stream() const { return scope_data()->stream(); } | |
201 Instruction* last() const { return _last; } | |
202 Bytecodes::Code code() const { return stream()->cur_bc(); } | |
203 int bci() const { return stream()->cur_bci(); } | |
204 int next_bci() const { return stream()->next_bci(); } | |
205 | |
206 // unified bailout support | |
207 void bailout(const char* msg) const { compilation()->bailout(msg); } | |
208 bool bailed_out() const { return compilation()->bailed_out(); } | |
209 | |
210 // stack manipulation helpers | |
211 void ipush(Value t) const { state()->ipush(t); } | |
212 void lpush(Value t) const { state()->lpush(t); } | |
213 void fpush(Value t) const { state()->fpush(t); } | |
214 void dpush(Value t) const { state()->dpush(t); } | |
215 void apush(Value t) const { state()->apush(t); } | |
216 void push(ValueType* type, Value t) const { state()-> push(type, t); } | |
217 | |
218 Value ipop() { return state()->ipop(); } | |
219 Value lpop() { return state()->lpop(); } | |
220 Value fpop() { return state()->fpop(); } | |
221 Value dpop() { return state()->dpop(); } | |
222 Value apop() { return state()->apop(); } | |
223 Value pop(ValueType* type) { return state()-> pop(type); } | |
224 | |
225 // instruction helpers | |
226 void load_constant(); | |
227 void load_local(ValueType* type, int index); | |
228 void store_local(ValueType* type, int index); | |
229 void store_local(ValueStack* state, Value value, ValueType* type, int index); | |
230 void load_indexed (BasicType type); | |
231 void store_indexed(BasicType type); | |
232 void stack_op(Bytecodes::Code code); | |
233 void arithmetic_op(ValueType* type, Bytecodes::Code code, ValueStack* lock_stack = NULL); | |
234 void negate_op(ValueType* type); | |
235 void shift_op(ValueType* type, Bytecodes::Code code); | |
236 void logic_op(ValueType* type, Bytecodes::Code code); | |
237 void compare_op(ValueType* type, Bytecodes::Code code); | |
238 void convert(Bytecodes::Code op, BasicType from, BasicType to); | |
239 void increment(); | |
240 void _goto(int from_bci, int to_bci); | |
241 void if_node(Value x, If::Condition cond, Value y, ValueStack* stack_before); | |
242 void if_zero(ValueType* type, If::Condition cond); | |
243 void if_null(ValueType* type, If::Condition cond); | |
244 void if_same(ValueType* type, If::Condition cond); | |
245 void jsr(int dest); | |
246 void ret(int local_index); | |
247 void table_switch(); | |
248 void lookup_switch(); | |
249 void method_return(Value x); | |
250 void call_register_finalizer(); | |
251 void access_field(Bytecodes::Code code); | |
252 void invoke(Bytecodes::Code code); | |
253 void new_instance(int klass_index); | |
254 void new_type_array(); | |
255 void new_object_array(); | |
256 void check_cast(int klass_index); | |
257 void instance_of(int klass_index); | |
258 void monitorenter(Value x, int bci); | |
259 void monitorexit(Value x, int bci); | |
260 void new_multi_array(int dimensions); | |
261 void throw_op(int bci); | |
262 Value round_fp(Value fp_value); | |
263 | |
264 // stack/code manipulation helpers | |
265 Instruction* append_with_bci(Instruction* instr, int bci); | |
266 Instruction* append(Instruction* instr); | |
267 Instruction* append_split(StateSplit* instr); | |
268 | |
269 // other helpers | |
270 static bool is_async(Bytecodes::Code code) { | |
271 assert(0 <= code && code < Bytecodes::number_of_java_codes, "illegal bytecode"); | |
272 return _is_async[code]; | |
273 } | |
274 BlockBegin* block_at(int bci) { return scope_data()->block_at(bci); } | |
275 XHandlers* handle_exception(int bci); | |
276 void connect_to_end(BlockBegin* beg); | |
277 void null_check(Value value); | |
278 void eliminate_redundant_phis(BlockBegin* start); | |
279 BlockEnd* iterate_bytecodes_for_block(int bci); | |
280 void iterate_all_blocks(bool start_in_current_block_for_inlining = false); | |
281 Dependencies* dependency_recorder() const; // = compilation()->dependencies() | |
282 bool direct_compare(ciKlass* k); | |
283 | |
284 void kill_all(); | |
285 | |
286 ValueStack* lock_stack(); | |
287 | |
288 // | |
289 // Inlining support | |
290 // | |
291 | |
292 // accessors | |
293 bool parsing_jsr() const { return scope_data()->parsing_jsr(); } | |
294 BlockBegin* continuation() const { return scope_data()->continuation(); } | |
295 ValueStack* continuation_state() const { return scope_data()->continuation_state(); } | |
296 BlockBegin* jsr_continuation() const { return scope_data()->jsr_continuation(); } | |
297 int caller_stack_size() const { return scope_data()->caller_stack_size(); } | |
298 void set_continuation(BlockBegin* continuation) { scope_data()->set_continuation(continuation); } | |
299 void set_inline_cleanup_info(BlockBegin* block, | |
300 Instruction* return_prev, | |
301 ValueStack* return_state) { scope_data()->set_inline_cleanup_info(block, | |
302 return_prev, | |
303 return_state); } | |
304 BlockBegin* inline_cleanup_block() const { return scope_data()->inline_cleanup_block(); } | |
305 Instruction* inline_cleanup_return_prev() const { return scope_data()->inline_cleanup_return_prev(); } | |
306 ValueStack* inline_cleanup_state() const { return scope_data()->inline_cleanup_state(); } | |
307 void incr_num_returns() { scope_data()->incr_num_returns(); } | |
308 int num_returns() const { return scope_data()->num_returns(); } | |
309 intx max_inline_size() const { return scope_data()->max_inline_size(); } | |
310 int inline_level() const { return scope()->level(); } | |
311 int recursive_inline_level(ciMethod* callee) const; | |
312 | |
313 // inlining of synchronized methods | |
314 void inline_sync_entry(Value lock, BlockBegin* sync_handler); | |
315 void fill_sync_handler(Value lock, BlockBegin* sync_handler, bool default_handler = false); | |
316 | |
317 // inliners | |
318 bool try_inline(ciMethod* callee, bool holder_known); | |
319 bool try_inline_intrinsics(ciMethod* callee); | |
320 bool try_inline_full (ciMethod* callee, bool holder_known); | |
321 bool try_inline_jsr(int jsr_dest_bci); | |
322 | |
323 // helpers | |
324 void inline_bailout(const char* msg); | |
325 BlockBegin* header_block(BlockBegin* entry, BlockBegin::Flag f, ValueStack* state); | |
326 BlockBegin* setup_start_block(int osr_bci, BlockBegin* std_entry, BlockBegin* osr_entry, ValueStack* init_state); | |
327 void setup_osr_entry_block(); | |
328 void clear_inline_bailout(); | |
329 ValueStack* state_at_entry(); | |
330 void push_root_scope(IRScope* scope, BlockList* bci2block, BlockBegin* start); | |
331 void push_scope(ciMethod* callee, BlockBegin* continuation); | |
332 void push_scope_for_jsr(BlockBegin* jsr_continuation, int jsr_dest_bci); | |
333 void pop_scope(); | |
334 void pop_scope_for_jsr(); | |
335 | |
336 bool append_unsafe_get_obj(ciMethod* callee, BasicType t, bool is_volatile); | |
337 bool append_unsafe_put_obj(ciMethod* callee, BasicType t, bool is_volatile); | |
338 bool append_unsafe_get_raw(ciMethod* callee, BasicType t); | |
339 bool append_unsafe_put_raw(ciMethod* callee, BasicType t); | |
340 bool append_unsafe_prefetch(ciMethod* callee, bool is_store, bool is_static); | |
341 void append_unsafe_CAS(ciMethod* callee); | |
342 | |
343 NOT_PRODUCT(void print_inline_result(ciMethod* callee, bool res);) | |
344 | |
345 // methodDataOop profiling helpers | |
346 void profile_call(Value recv, ciKlass* predicted_holder); | |
347 void profile_invocation(ciMethod* method); | |
348 void profile_bci(int bci); | |
349 | |
350 // Helpers for generation of profile information | |
351 bool profile_branches() { | |
352 return _compilation->env()->comp_level() == CompLevel_fast_compile && | |
353 Tier1UpdateMethodData && Tier1ProfileBranches; | |
354 } | |
355 bool profile_calls() { | |
356 return _compilation->env()->comp_level() == CompLevel_fast_compile && | |
357 Tier1UpdateMethodData && Tier1ProfileCalls; | |
358 } | |
359 bool profile_inlined_calls() { | |
360 return profile_calls() && Tier1ProfileInlinedCalls; | |
361 } | |
362 bool profile_checkcasts() { | |
363 return _compilation->env()->comp_level() == CompLevel_fast_compile && | |
364 Tier1UpdateMethodData && Tier1ProfileCheckcasts; | |
365 } | |
366 | |
367 public: | |
368 NOT_PRODUCT(void print_stats();) | |
369 | |
370 // initialization | |
371 static void initialize(); | |
372 | |
373 // public | |
374 static bool can_trap(ciMethod* method, Bytecodes::Code code) { | |
375 assert(0 <= code && code < Bytecodes::number_of_java_codes, "illegal bytecode"); | |
376 if (_can_trap[code]) return true; | |
377 // special handling for finalizer registration | |
378 return code == Bytecodes::_return && method->intrinsic_id() == vmIntrinsics::_Object_init; | |
379 } | |
380 | |
381 // creation | |
382 GraphBuilder(Compilation* compilation, IRScope* scope); | |
383 static void sort_top_into_worklist(BlockList* worklist, BlockBegin* top); | |
384 | |
385 BlockBegin* start() const { return _start; } | |
386 }; |