1.1 --- a/src/share/vm/runtime/sweeper.cpp Thu Dec 19 06:09:16 2013 +0100
1.2 +++ b/src/share/vm/runtime/sweeper.cpp Thu Dec 19 14:08:02 2013 +0100
1.3 @@ -129,6 +129,7 @@
1.4
1.5 nmethod* NMethodSweeper::_current = NULL; // Current nmethod
1.6 long NMethodSweeper::_traversals = 0; // Stack scan count, also sweep ID.
1.7 +long NMethodSweeper::_total_nof_code_cache_sweeps = 0; // Total number of full sweeps of the code cache
1.8 long NMethodSweeper::_time_counter = 0; // Virtual time used to periodically invoke sweeper
1.9 long NMethodSweeper::_last_sweep = 0; // Value of _time_counter when the last sweep happened
1.10 int NMethodSweeper::_seen = 0; // Nof. nmethod we have currently processed in current pass of CodeCache
1.11 @@ -143,13 +144,16 @@
1.12 // 1) alive -> not_entrant
1.13 // 2) not_entrant -> zombie
1.14 // 3) zombie -> marked_for_reclamation
1.15 +int NMethodSweeper::_hotness_counter_reset_val = 0;
1.16
1.17 -int NMethodSweeper::_total_nof_methods_reclaimed = 0; // Accumulated nof methods flushed
1.18 -Tickspan NMethodSweeper::_total_time_sweeping; // Accumulated time sweeping
1.19 -Tickspan NMethodSweeper::_total_time_this_sweep; // Total time this sweep
1.20 -Tickspan NMethodSweeper::_peak_sweep_time; // Peak time for a full sweep
1.21 -Tickspan NMethodSweeper::_peak_sweep_fraction_time; // Peak time sweeping one fraction
1.22 -int NMethodSweeper::_hotness_counter_reset_val = 0;
1.23 +long NMethodSweeper::_total_nof_methods_reclaimed = 0; // Accumulated nof methods flushed
1.24 +long NMethodSweeper::_total_nof_c2_methods_reclaimed = 0; // Accumulated nof methods flushed
1.25 +size_t NMethodSweeper::_total_flushed_size = 0; // Total number of bytes flushed from the code cache
1.26 +Tickspan NMethodSweeper::_total_time_sweeping; // Accumulated time sweeping
1.27 +Tickspan NMethodSweeper::_total_time_this_sweep; // Total time this sweep
1.28 +Tickspan NMethodSweeper::_peak_sweep_time; // Peak time for a full sweep
1.29 +Tickspan NMethodSweeper::_peak_sweep_fraction_time; // Peak time sweeping one fraction
1.30 +
1.31
1.32
1.33 class MarkActivationClosure: public CodeBlobClosure {
1.34 @@ -292,6 +296,7 @@
1.35
1.36 // We are done with sweeping the code cache once.
1.37 if (_sweep_fractions_left == 0) {
1.38 + _total_nof_code_cache_sweeps++;
1.39 _last_sweep = _time_counter;
1.40 // Reset flag; temporarily disables sweeper
1.41 _should_sweep = false;
1.42 @@ -378,6 +383,7 @@
1.43 _total_time_sweeping += sweep_time;
1.44 _total_time_this_sweep += sweep_time;
1.45 _peak_sweep_fraction_time = MAX2(sweep_time, _peak_sweep_fraction_time);
1.46 + _total_flushed_size += freed_memory;
1.47 _total_nof_methods_reclaimed += _flushed_count;
1.48
1.49 EventSweepCodeCache event(UNTIMED);
1.50 @@ -509,6 +515,9 @@
1.51 tty->print_cr("### Nmethod %3d/" PTR_FORMAT " (marked for reclamation) being flushed", nm->compile_id(), nm);
1.52 }
1.53 freed_memory = nm->total_size();
1.54 + if (nm->is_compiled_by_c2()) {
1.55 + _total_nof_c2_methods_reclaimed++;
1.56 + }
1.57 release_nmethod(nm);
1.58 _flushed_count++;
1.59 } else {
1.60 @@ -547,6 +556,9 @@
1.61 SWEEP(nm);
1.62 // No inline caches will ever point to osr methods, so we can just remove it
1.63 freed_memory = nm->total_size();
1.64 + if (nm->is_compiled_by_c2()) {
1.65 + _total_nof_c2_methods_reclaimed++;
1.66 + }
1.67 release_nmethod(nm);
1.68 _flushed_count++;
1.69 } else {
1.70 @@ -634,3 +646,13 @@
1.71 xtty->end_elem();
1.72 }
1.73 }
1.74 +
1.75 +void NMethodSweeper::print() {
1.76 + ttyLocker ttyl;
1.77 + tty->print_cr("Code cache sweeper statistics:");
1.78 + tty->print_cr(" Total sweep time: %1.0lfms", (double)_total_time_sweeping.value()/1000000);
1.79 + tty->print_cr(" Total number of full sweeps: %ld", _total_nof_code_cache_sweeps);
1.80 + tty->print_cr(" Total number of flushed methods: %ld(%ld C2 methods)", _total_nof_methods_reclaimed,
1.81 + _total_nof_c2_methods_reclaimed);
1.82 + tty->print_cr(" Total size of flushed methods: " SIZE_FORMAT "kB", _total_flushed_size/K);
1.83 +}
