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comparison src/share/vm/oops/cpCacheOop.cpp @ 3279:08ccee2c4dbf

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6993078: JSR 292 too many pushes: Lesp points into register window Reviewed-by: kvn, never
author twisti
date Thu, 21 Apr 2011 00:25:40 -0700
parents ed69575596ac
children 81d815b05abb
comparison
equal deleted inserted replaced
3278:66b0e2371912 3279:08ccee2c4dbf
102 oop* f1_addr = (oop*) &_f1; 102 oop* f1_addr = (oop*) &_f1;
103 update_barrier_set_pre(f1_addr, f1); 103 update_barrier_set_pre(f1_addr, f1);
104 void* result = Atomic::cmpxchg_ptr(f1, f1_addr, NULL); 104 void* result = Atomic::cmpxchg_ptr(f1, f1_addr, NULL);
105 bool success = (result == NULL); 105 bool success = (result == NULL);
106 if (success) { 106 if (success) {
107 update_barrier_set(f1_addr, f1); 107 update_barrier_set((void*) f1_addr, f1);
108 } 108 }
109 } 109 }
110 110
111 #ifdef ASSERT 111 #ifdef ASSERT
112 // It is possible to have two different dummy methodOops created 112 // It is possible to have two different dummy methodOops created
273 intptr_t bsm_cache_index = (intptr_t) _f2 - constantPoolOopDesc::CPCACHE_INDEX_TAG; 273 intptr_t bsm_cache_index = (intptr_t) _f2 - constantPoolOopDesc::CPCACHE_INDEX_TAG;
274 assert(bsm_cache_index == (intptr_t)(u2)bsm_cache_index, "oob"); 274 assert(bsm_cache_index == (intptr_t)(u2)bsm_cache_index, "oob");
275 return (int) bsm_cache_index; 275 return (int) bsm_cache_index;
276 } 276 }
277 277
278 void ConstantPoolCacheEntry::set_dynamic_call(Handle call_site, 278 void ConstantPoolCacheEntry::set_dynamic_call(Handle call_site, methodHandle signature_invoker) {
279 methodHandle signature_invoker) {
280 assert(is_secondary_entry(), ""); 279 assert(is_secondary_entry(), "");
280 // NOTE: it's important that all other values are set before f1 is
281 // set since some users short circuit on f1 being set
282 // (i.e. non-null) and that may result in uninitialized values for
283 // other racing threads (e.g. flags).
281 int param_size = signature_invoker->size_of_parameters(); 284 int param_size = signature_invoker->size_of_parameters();
282 assert(param_size >= 1, "method argument size must include MH.this"); 285 assert(param_size >= 1, "method argument size must include MH.this");
283 param_size -= 1; // do not count MH.this; it is not stacked for invokedynamic 286 param_size -= 1; // do not count MH.this; it is not stacked for invokedynamic
284 if (Atomic::cmpxchg_ptr(call_site(), &_f1, NULL) == NULL) {
285 // racing threads might be trying to install their own favorites
286 set_f1(call_site());
287 }
288 bool is_final = true; 287 bool is_final = true;
289 assert(signature_invoker->is_final_method(), "is_final"); 288 assert(signature_invoker->is_final_method(), "is_final");
290 set_flags(as_flags(as_TosState(signature_invoker->result_type()), is_final, false, false, false, true) | param_size); 289 int flags = as_flags(as_TosState(signature_invoker->result_type()), is_final, false, false, false, true) | param_size;
290 assert(_flags == 0 || _flags == flags, "flags should be the same");
291 set_flags(flags);
291 // do not do set_bytecode on a secondary CP cache entry 292 // do not do set_bytecode on a secondary CP cache entry
292 //set_bytecode_1(Bytecodes::_invokedynamic); 293 //set_bytecode_1(Bytecodes::_invokedynamic);
294 set_f1_if_null_atomic(call_site()); // This must be the last one to set (see NOTE above)!
293 } 295 }
294 296
295 297
296 class LocalOopClosure: public OopClosure { 298 class LocalOopClosure: public OopClosure {
297 private: 299 private: