src/share/vm/gc_implementation/parallelScavenge/generationSizer.hpp
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hotspot Cdiff src/share/vm/gc_implementation/parallelScavenge/generationSizer.hpp
src/share/vm/gc_implementation/parallelScavenge/generationSizer.hpp
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*** 29,43 ****
// There is a nice batch of tested generation sizing code in
// TwoGenerationCollectorPolicy. Lets reuse it!
class GenerationSizer : public TwoGenerationCollectorPolicy {
! public:
! GenerationSizer() {
! // Partial init only!
! initialize_flags();
! initialize_size_info();
}
void initialize_flags() {
// Do basic sizing work
TwoGenerationCollectorPolicy::initialize_flags();
--- 29,55 ----
// There is a nice batch of tested generation sizing code in
// TwoGenerationCollectorPolicy. Lets reuse it!
class GenerationSizer : public TwoGenerationCollectorPolicy {
! private:
!
! void trace_gen_sizes(const char* const str) {
! if (TracePageSizes) {
! tty->print_cr("%s: " SIZE_FORMAT "," SIZE_FORMAT " "
! SIZE_FORMAT "," SIZE_FORMAT " "
! SIZE_FORMAT,
! str,
! _min_gen1_size / K, _max_gen1_size / K,
! _min_gen0_size / K, _max_gen0_size / K,
! _max_heap_byte_size / K);
! }
! }
!
! void initialize_alignments() {
! _space_alignment = _gen_alignment = default_gen_alignment();
! _heap_alignment = compute_heap_alignment();
}
void initialize_flags() {
// Do basic sizing work
TwoGenerationCollectorPolicy::initialize_flags();
*** 49,71 ****
// The survivor ratio's are calculated "raw", unlike the
// default gc, which adds 2 to the ratio value. We need to
// make sure the values are valid before using them.
if (MinSurvivorRatio < 3) {
! MinSurvivorRatio = 3;
}
if (InitialSurvivorRatio < 3) {
! InitialSurvivorRatio = 3;
}
}
! size_t min_young_gen_size() { return _min_gen0_size; }
! size_t young_gen_size() { return _initial_gen0_size; }
! size_t max_young_gen_size() { return _max_gen0_size; }
! size_t min_old_gen_size() { return _min_gen1_size; }
! size_t old_gen_size() { return _initial_gen1_size; }
! size_t max_old_gen_size() { return _max_gen1_size; }
};
#endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GENERATIONSIZER_HPP
--- 61,94 ----
// The survivor ratio's are calculated "raw", unlike the
// default gc, which adds 2 to the ratio value. We need to
// make sure the values are valid before using them.
if (MinSurvivorRatio < 3) {
! FLAG_SET_ERGO(uintx, MinSurvivorRatio, 3);
}
if (InitialSurvivorRatio < 3) {
! FLAG_SET_ERGO(uintx, InitialSurvivorRatio, 3);
}
}
! void initialize_size_info() {
! trace_gen_sizes("ps heap raw");
! const size_t page_sz = os::page_size_for_region(_min_heap_byte_size,
! _max_heap_byte_size,
! 8);
!
! // Can a page size be something else than a power of two?
! assert(is_power_of_2((intptr_t)page_sz), "must be a power of 2");
! size_t new_alignment = round_to(page_sz, _gen_alignment);
! if (new_alignment != _gen_alignment) {
! _gen_alignment = new_alignment;
! // Redo everything from the start
! initialize_flags();
! }
! TwoGenerationCollectorPolicy::initialize_size_info();
! trace_gen_sizes("ps heap rnd");
! }
};
#endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GENERATIONSIZER_HPP
src/share/vm/gc_implementation/parallelScavenge/generationSizer.hpp
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