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comparison src/share/vm/utilities/taskqueue.hpp @ 1024:2c03ce058f55

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6888847: TaskQueue needs release_store() for correctness on RMO machines Summary: See title. Reviewed-by: jmasa, ysr, jcoomes, iveresov, tonyp
author bobv
date Wed, 07 Oct 2009 09:48:42 -0400
parents 3ee342e25e57
children 1ee412f7fec9
comparison
equal deleted inserted replaced
1023:11d4857fe5e1 1024:2c03ce058f55
205 bool GenericTaskQueue<E>::push_slow(E t, uint dirty_n_elems) { 205 bool GenericTaskQueue<E>::push_slow(E t, uint dirty_n_elems) {
206 if (dirty_n_elems == N - 1) { 206 if (dirty_n_elems == N - 1) {
207 // Actually means 0, so do the push. 207 // Actually means 0, so do the push.
208 uint localBot = _bottom; 208 uint localBot = _bottom;
209 _elems[localBot] = t; 209 _elems[localBot] = t;
210 _bottom = increment_index(localBot); 210 OrderAccess::release_store(&_bottom, increment_index(localBot));
211 return true; 211 return true;
212 } 212 }
213 return false; 213 return false;
214 } 214 }
215 215
483 idx_t top = _age.top(); 483 idx_t top = _age.top();
484 uint dirty_n_elems = dirty_size(localBot, top); 484 uint dirty_n_elems = dirty_size(localBot, top);
485 assert((dirty_n_elems >= 0) && (dirty_n_elems < N), "n_elems out of range."); 485 assert((dirty_n_elems >= 0) && (dirty_n_elems < N), "n_elems out of range.");
486 if (dirty_n_elems < max_elems()) { 486 if (dirty_n_elems < max_elems()) {
487 _elems[localBot] = t; 487 _elems[localBot] = t;
488 _bottom = increment_index(localBot); 488 OrderAccess::release_store(&_bottom, increment_index(localBot));
489 return true; 489 return true;
490 } else { 490 } else {
491 return push_slow(t, dirty_n_elems); 491 return push_slow(t, dirty_n_elems);
492 } 492 }
493 #endif 493 #endif