Tue, 04 Oct 2011 14:30:04 -0700
6865265: JVM crashes with "missing exception handler" error
Summary: Retry the call to fast_exception_handler_bci_for() after it returned with a pending exception. Don't cache the exception handler pc computed by compute_compiled_exc_handler() if the handler is for another (nested) exception.
Reviewed-by: kamg, kvn
Contributed-by: volker.simonis@gmail.com
1 /*
2 * Copyright (c) 1998, 2010, 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
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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.
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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.
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23 */
25 #ifndef SHARE_VM_OPTO_RUNTIME_HPP
26 #define SHARE_VM_OPTO_RUNTIME_HPP
28 #include "code/codeBlob.hpp"
29 #include "opto/machnode.hpp"
30 #include "opto/type.hpp"
31 #include "runtime/biasedLocking.hpp"
32 #include "runtime/deoptimization.hpp"
33 #include "runtime/vframe.hpp"
35 //------------------------------OptoRuntime------------------------------------
36 // Opto compiler runtime routines
37 //
38 // These are all generated from Ideal graphs. They are called with the
39 // Java calling convention. Internally they call C++. They are made once at
40 // startup time and Opto compiles calls to them later.
41 // Things are broken up into quads: the signature they will be called with,
42 // the address of the generated code, the corresponding C++ code and an
43 // nmethod.
45 // The signature (returned by "xxx_Type()") is used at startup time by the
46 // Generator to make the generated code "xxx_Java". Opto compiles calls
47 // to the generated code "xxx_Java". When the compiled code gets executed,
48 // it calls the C++ code "xxx_C". The generated nmethod is saved in the
49 // CodeCache. Exception handlers use the nmethod to get the callee-save
50 // register OopMaps.
51 class CallInfo;
53 //
54 // NamedCounters are tagged counters which can be used for profiling
55 // code in various ways. Currently they are used by the lock coarsening code
56 //
58 class NamedCounter : public CHeapObj {
59 public:
60 enum CounterTag {
61 NoTag,
62 LockCounter,
63 EliminatedLockCounter,
64 BiasedLockingCounter
65 };
67 private:
68 const char * _name;
69 int _count;
70 CounterTag _tag;
71 NamedCounter* _next;
73 public:
74 NamedCounter(const char *n, CounterTag tag = NoTag):
75 _name(n),
76 _count(0),
77 _next(NULL),
78 _tag(tag) {}
80 const char * name() const { return _name; }
81 int count() const { return _count; }
82 address addr() { return (address)&_count; }
83 CounterTag tag() const { return _tag; }
84 void set_tag(CounterTag tag) { _tag = tag; }
86 NamedCounter* next() const { return _next; }
87 void set_next(NamedCounter* next) {
88 assert(_next == NULL, "already set");
89 _next = next;
90 }
92 };
94 class BiasedLockingNamedCounter : public NamedCounter {
95 private:
96 BiasedLockingCounters _counters;
98 public:
99 BiasedLockingNamedCounter(const char *n) :
100 NamedCounter(n, BiasedLockingCounter), _counters() {}
102 BiasedLockingCounters* counters() { return &_counters; }
103 };
105 typedef const TypeFunc*(*TypeFunc_generator)();
107 class OptoRuntime : public AllStatic {
108 friend class Matcher; // allow access to stub names
110 private:
111 // define stubs
112 static address generate_stub(ciEnv* ci_env, TypeFunc_generator gen, address C_function, const char *name, int is_fancy_jump, bool pass_tls, bool save_arguments, bool return_pc);
114 // References to generated stubs
115 static address _new_instance_Java;
116 static address _new_array_Java;
117 static address _new_array_nozero_Java;
118 static address _multianewarray2_Java;
119 static address _multianewarray3_Java;
120 static address _multianewarray4_Java;
121 static address _multianewarray5_Java;
122 static address _multianewarrayN_Java;
123 static address _g1_wb_pre_Java;
124 static address _g1_wb_post_Java;
125 static address _vtable_must_compile_Java;
126 static address _complete_monitor_locking_Java;
127 static address _rethrow_Java;
129 static address _slow_arraycopy_Java;
130 static address _register_finalizer_Java;
132 # ifdef ENABLE_ZAP_DEAD_LOCALS
133 static address _zap_dead_Java_locals_Java;
134 static address _zap_dead_native_locals_Java;
135 # endif
138 //
139 // Implementation of runtime methods
140 // =================================
142 // Allocate storage for a Java instance.
143 static void new_instance_C(klassOopDesc* instance_klass, JavaThread *thread);
145 // Allocate storage for a objArray or typeArray
146 static void new_array_C(klassOopDesc* array_klass, int len, JavaThread *thread);
147 static void new_array_nozero_C(klassOopDesc* array_klass, int len, JavaThread *thread);
149 // Post-slow-path-allocation, pre-initializing-stores step for
150 // implementing ReduceInitialCardMarks
151 static void new_store_pre_barrier(JavaThread* thread);
153 // Allocate storage for a multi-dimensional arrays
154 // Note: needs to be fixed for arbitrary number of dimensions
155 static void multianewarray2_C(klassOopDesc* klass, int len1, int len2, JavaThread *thread);
156 static void multianewarray3_C(klassOopDesc* klass, int len1, int len2, int len3, JavaThread *thread);
157 static void multianewarray4_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, JavaThread *thread);
158 static void multianewarray5_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, int len5, JavaThread *thread);
159 static void multianewarrayN_C(klassOopDesc* klass, arrayOopDesc* dims, JavaThread *thread);
160 static void g1_wb_pre_C(oopDesc* orig, JavaThread* thread);
161 static void g1_wb_post_C(void* card_addr, JavaThread* thread);
163 public:
164 // Slow-path Locking and Unlocking
165 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);
166 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock);
168 private:
170 // Implicit exception support
171 static void throw_null_exception_C(JavaThread* thread);
173 // Exception handling
174 static address handle_exception_C (JavaThread* thread);
175 static address handle_exception_C_helper(JavaThread* thread, nmethod*& nm);
176 static address rethrow_C (oopDesc* exception, JavaThread *thread, address return_pc );
177 static void deoptimize_caller_frame (JavaThread *thread, bool doit);
179 // CodeBlob support
180 // ===================================================================
182 static ExceptionBlob* _exception_blob;
183 static void generate_exception_blob();
185 static void register_finalizer(oopDesc* obj, JavaThread* thread);
187 // zaping dead locals, either from Java frames or from native frames
188 # ifdef ENABLE_ZAP_DEAD_LOCALS
189 static void zap_dead_Java_locals_C( JavaThread* thread);
190 static void zap_dead_native_locals_C( JavaThread* thread);
192 static void zap_dead_java_or_native_locals( JavaThread*, bool (*)(frame*));
194 public:
195 static int ZapDeadCompiledLocals_count;
197 # endif
200 public:
202 static bool is_callee_saved_register(MachRegisterNumbers reg);
204 // One time only generate runtime code stubs
205 static void generate(ciEnv* env);
207 // Returns the name of a stub
208 static const char* stub_name(address entry);
210 // access to runtime stubs entry points for java code
211 static address new_instance_Java() { return _new_instance_Java; }
212 static address new_array_Java() { return _new_array_Java; }
213 static address new_array_nozero_Java() { return _new_array_nozero_Java; }
214 static address multianewarray2_Java() { return _multianewarray2_Java; }
215 static address multianewarray3_Java() { return _multianewarray3_Java; }
216 static address multianewarray4_Java() { return _multianewarray4_Java; }
217 static address multianewarray5_Java() { return _multianewarray5_Java; }
218 static address multianewarrayN_Java() { return _multianewarrayN_Java; }
219 static address g1_wb_pre_Java() { return _g1_wb_pre_Java; }
220 static address g1_wb_post_Java() { return _g1_wb_post_Java; }
221 static address vtable_must_compile_stub() { return _vtable_must_compile_Java; }
222 static address complete_monitor_locking_Java() { return _complete_monitor_locking_Java; }
224 static address slow_arraycopy_Java() { return _slow_arraycopy_Java; }
225 static address register_finalizer_Java() { return _register_finalizer_Java; }
228 # ifdef ENABLE_ZAP_DEAD_LOCALS
229 static address zap_dead_locals_stub(bool is_native) { return is_native
230 ? _zap_dead_native_locals_Java
231 : _zap_dead_Java_locals_Java; }
232 static MachNode* node_to_call_zap_dead_locals(Node* n, int block_num, bool is_native);
233 # endif
235 static ExceptionBlob* exception_blob() { return _exception_blob; }
237 // Leaf routines helping with method data update
238 static void profile_receiver_type_C(DataLayout* data, oopDesc* receiver);
240 // Implicit exception support
241 static void throw_div0_exception_C (JavaThread* thread);
242 static void throw_stack_overflow_error_C(JavaThread* thread);
244 // Exception handling
245 static address rethrow_stub() { return _rethrow_Java; }
248 // Type functions
249 // ======================================================
251 static const TypeFunc* new_instance_Type(); // object allocation (slow case)
252 static const TypeFunc* new_array_Type (); // [a]newarray (slow case)
253 static const TypeFunc* multianewarray_Type(int ndim); // multianewarray
254 static const TypeFunc* multianewarray2_Type(); // multianewarray
255 static const TypeFunc* multianewarray3_Type(); // multianewarray
256 static const TypeFunc* multianewarray4_Type(); // multianewarray
257 static const TypeFunc* multianewarray5_Type(); // multianewarray
258 static const TypeFunc* multianewarrayN_Type(); // multianewarray
259 static const TypeFunc* g1_wb_pre_Type();
260 static const TypeFunc* g1_wb_post_Type();
261 static const TypeFunc* complete_monitor_enter_Type();
262 static const TypeFunc* complete_monitor_exit_Type();
263 static const TypeFunc* uncommon_trap_Type();
264 static const TypeFunc* athrow_Type();
265 static const TypeFunc* rethrow_Type();
266 static const TypeFunc* Math_D_D_Type(); // sin,cos & friends
267 static const TypeFunc* Math_DD_D_Type(); // mod,pow & friends
268 static const TypeFunc* modf_Type();
269 static const TypeFunc* l2f_Type();
270 static const TypeFunc* current_time_millis_Type();
272 static const TypeFunc* flush_windows_Type();
274 // arraycopy routine types
275 static const TypeFunc* fast_arraycopy_Type(); // bit-blasters
276 static const TypeFunc* checkcast_arraycopy_Type();
277 static const TypeFunc* generic_arraycopy_Type();
278 static const TypeFunc* slow_arraycopy_Type(); // the full routine
280 static const TypeFunc* array_fill_Type();
282 // leaf on stack replacement interpreter accessor types
283 static const TypeFunc* osr_end_Type();
285 // leaf methodData routine types
286 static const TypeFunc* profile_receiver_type_Type();
288 // leaf on stack replacement interpreter accessor types
289 static const TypeFunc* fetch_int_Type();
290 static const TypeFunc* fetch_long_Type();
291 static const TypeFunc* fetch_float_Type();
292 static const TypeFunc* fetch_double_Type();
293 static const TypeFunc* fetch_oop_Type();
294 static const TypeFunc* fetch_monitor_Type();
296 static const TypeFunc* register_finalizer_Type();
298 // Dtrace support
299 static const TypeFunc* dtrace_method_entry_exit_Type();
300 static const TypeFunc* dtrace_object_alloc_Type();
302 # ifdef ENABLE_ZAP_DEAD_LOCALS
303 static const TypeFunc* zap_dead_locals_Type();
304 # endif
306 private:
307 static NamedCounter * volatile _named_counters;
309 public:
310 // helper function which creates a named counter labeled with the
311 // if they are available
312 static NamedCounter* new_named_counter(JVMState* jvms, NamedCounter::CounterTag tag);
314 // dumps all the named counters
315 static void print_named_counters();
317 };
319 #endif // SHARE_VM_OPTO_RUNTIME_HPP