368   }
 369 
 370   return success;
 371 }
 372 
 373 
 374 void DefNewGeneration::compute_new_size() {
 375   // This is called after a gc that includes the following generation
 376   // (which is required to exist.)  So from-space will normally be empty.
 377   // Note that we check both spaces, since if scavenge failed they revert roles.
 378   // If not we bail out (otherwise we would have to relocate the objects)
 379   if (!from()->is_empty() || !to()->is_empty()) {
 380     return;
 381   }
 382 
 383   int next_level = level() + 1;
 384   GenCollectedHeap* gch = GenCollectedHeap::heap();
 385   assert(next_level < gch->_n_gens,
 386          "DefNewGeneration cannot be an oldest gen");
 387 
 388   Generation* next_gen = gch->_gens[next_level];
 389   size_t old_size = next_gen->capacity();
 390   size_t new_size_before = _virtual_space.committed_size();
 391   size_t min_new_size = spec()->init_size();
 392   size_t max_new_size = reserved().byte_size();
 393   assert(min_new_size <= new_size_before &&
 394          new_size_before <= max_new_size,
 395          "just checking");
 396   // All space sizes must be multiples of Generation::GenGrain.
 397   size_t alignment = Generation::GenGrain;
 398 
 399   // Compute desired new generation size based on NewRatio and
 400   // NewSizeThreadIncrease
 401   size_t desired_new_size = old_size/NewRatio;
 402   int threads_count = Threads::number_of_non_daemon_threads();
 403   size_t thread_increase_size = threads_count * NewSizeThreadIncrease;
 404   desired_new_size = align_size_up(desired_new_size + thread_increase_size, alignment);
 405 
 406   // Adjust new generation size
 407   desired_new_size = MAX2(MIN2(desired_new_size, max_new_size), min_new_size);
 408   assert(desired_new_size <= max_new_size, "just checking");

 368   }
 369 
 370   return success;
 371 }
 372 
 373 
 374 void DefNewGeneration::compute_new_size() {
 375   // This is called after a gc that includes the following generation
 376   // (which is required to exist.)  So from-space will normally be empty.
 377   // Note that we check both spaces, since if scavenge failed they revert roles.
 378   // If not we bail out (otherwise we would have to relocate the objects)
 379   if (!from()->is_empty() || !to()->is_empty()) {
 380     return;
 381   }
 382 
 383   int next_level = level() + 1;
 384   GenCollectedHeap* gch = GenCollectedHeap::heap();
 385   assert(next_level < gch->_n_gens,
 386          "DefNewGeneration cannot be an oldest gen");
 387 
 388   Generation* next_gen = gch->get_gen(next_level);
 389   size_t old_size = next_gen->capacity();
 390   size_t new_size_before = _virtual_space.committed_size();
 391   size_t min_new_size = spec()->init_size();
 392   size_t max_new_size = reserved().byte_size();
 393   assert(min_new_size <= new_size_before &&
 394          new_size_before <= max_new_size,
 395          "just checking");
 396   // All space sizes must be multiples of Generation::GenGrain.
 397   size_t alignment = Generation::GenGrain;
 398 
 399   // Compute desired new generation size based on NewRatio and
 400   // NewSizeThreadIncrease
 401   size_t desired_new_size = old_size/NewRatio;
 402   int threads_count = Threads::number_of_non_daemon_threads();
 403   size_t thread_increase_size = threads_count * NewSizeThreadIncrease;
 404   desired_new_size = align_size_up(desired_new_size + thread_increase_size, alignment);
 405 
 406   // Adjust new generation size
 407   desired_new_size = MAX2(MIN2(desired_new_size, max_new_size), min_new_size);
 408   assert(desired_new_size <= max_new_size, "just checking");