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8028128: Add a type safe alternative for working with counter based data

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Reviewed-by: dholmes, egahlin
This commit is contained in:
Markus Grönlund 2013-11-23 12:25:13 +01:00
parent 9963570316
commit b1e3461fe5
37 changed files with 522 additions and 235 deletions
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20
hotspot/src/share/vm/runtime/sweeper.cpp
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@ -38,6 +38,7 @@
#include "runtime/vm_operations.hpp"
#include "trace/tracing.hpp"
#include "utilities/events.hpp"
#include "utilities/ticks.inline.hpp"
#include "utilities/xmlstream.hpp"
#ifdef ASSERT
@ -144,10 +145,10 @@ volatile int NMethodSweeper::_bytes_changed = 0; // Counts the tot
// 3) zombie -> marked_for_reclamation
int NMethodSweeper::_total_nof_methods_reclaimed = 0; // Accumulated nof methods flushed
jlong NMethodSweeper::_total_time_sweeping = 0; // Accumulated time sweeping
jlong NMethodSweeper::_total_time_this_sweep = 0; // Total time this sweep
jlong NMethodSweeper::_peak_sweep_time = 0; // Peak time for a full sweep
jlong NMethodSweeper::_peak_sweep_fraction_time = 0; // Peak time sweeping one fraction
Tickspan NMethodSweeper::_total_time_sweeping; // Accumulated time sweeping
Tickspan NMethodSweeper::_total_time_this_sweep; // Total time this sweep
Tickspan NMethodSweeper::_peak_sweep_time; // Peak time for a full sweep
Tickspan NMethodSweeper::_peak_sweep_fraction_time; // Peak time sweeping one fraction
int NMethodSweeper::_hotness_counter_reset_val = 0;
@ -209,7 +210,7 @@ void NMethodSweeper::mark_active_nmethods() {
_sweep_fractions_left = NmethodSweepFraction;
_current = CodeCache::first_nmethod();
_traversals += 1;
_total_time_this_sweep = 0;
_total_time_this_sweep = Tickspan();
if (PrintMethodFlushing) {
tty->print_cr("### Sweep: stack traversal %d", _traversals);
@ -303,7 +304,7 @@ void NMethodSweeper::possibly_sweep() {
}
void NMethodSweeper::sweep_code_cache() {
jlong sweep_start_counter = os::elapsed_counter();
Ticks sweep_start_counter = Ticks::now();
_flushed_count = 0;
_zombified_count = 0;
@ -367,8 +368,8 @@ void NMethodSweeper::sweep_code_cache() {
assert(_sweep_fractions_left > 1 || _current == NULL, "must have scanned the whole cache");
jlong sweep_end_counter = os::elapsed_counter();
jlong sweep_time = sweep_end_counter - sweep_start_counter;
const Ticks sweep_end_counter = Ticks::now();
const Tickspan sweep_time = sweep_end_counter - sweep_start_counter;
_total_time_sweeping += sweep_time;
_total_time_this_sweep += sweep_time;
_peak_sweep_fraction_time = MAX2(sweep_time, _peak_sweep_fraction_time);
@ -389,7 +390,8 @@ void NMethodSweeper::sweep_code_cache() {
#ifdef ASSERT
if(PrintMethodFlushing) {
tty->print_cr("### sweeper: sweep time(%d): " INT64_FORMAT, _sweep_fractions_left, (jlong)sweep_time);
tty->print_cr("### sweeper: sweep time(%d): "
INT64_FORMAT, _sweep_fractions_left, (jlong)sweep_time.value());
}
#endif