generationSizer.hpp revision 0
0N/A/*
2362N/A * Copyright 2001-2006 Sun Microsystems, Inc. All Rights Reserved.
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0N/A
0N/A// There is a nice batch of tested generation sizing code in
0N/A// TwoGenerationCollectorPolicy. Lets reuse it!
0N/A
0N/Aclass GenerationSizer : public TwoGenerationCollectorPolicy {
0N/A public:
0N/A GenerationSizer() {
0N/A // Partial init only!
0N/A initialize_flags();
0N/A initialize_size_info();
0N/A }
0N/A
0N/A void initialize_flags() {
0N/A // Do basic sizing work
0N/A this->TwoGenerationCollectorPolicy::initialize_flags();
0N/A
0N/A // If the user hasn't explicitly set the number of worker
0N/A // threads, set the count.
0N/A if (ParallelGCThreads == 0) {
0N/A assert(UseParallelGC, "Setting ParallelGCThreads without UseParallelGC");
0N/A ParallelGCThreads = os::active_processor_count();
0N/A }
0N/A
0N/A // The survivor ratio's are calculated "raw", unlike the
0N/A // default gc, which adds 2 to the ratio value. We need to
0N/A // make sure the values are valid before using them.
0N/A if (MinSurvivorRatio < 3) {
0N/A MinSurvivorRatio = 3;
0N/A }
0N/A
0N/A if (InitialSurvivorRatio < 3) {
0N/A InitialSurvivorRatio = 3;
0N/A }
0N/A }
0N/A
0N/A size_t min_young_gen_size() { return _min_gen0_size; }
0N/A size_t young_gen_size() { return _initial_gen0_size; }
0N/A size_t max_young_gen_size() { return _max_gen0_size; }
0N/A
0N/A size_t min_old_gen_size() { return _min_gen1_size; }
0N/A size_t old_gen_size() { return _initial_gen1_size; }
0N/A size_t max_old_gen_size() { return _max_gen1_size; }
0N/A
0N/A size_t perm_gen_size() { return PermSize; }
0N/A size_t max_perm_gen_size() { return MaxPermSize; }
0N/A};
0N/A