src/hotspot/share/gc/shared/partialArrayTaskStats.cpp

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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#include "gc/shared/partialArrayTaskStats.hpp"
#include "logging/log.hpp"
#include "logging/logHandle.hpp"
#include "logging/logStream.hpp"
#include "utilities/globalDefinitions.hpp"
#include "utilities/growableArray.hpp"
#include "utilities/macros.hpp"
#include "utilities/ostream.hpp"

#if TASKQUEUE_STATS

PartialArrayTaskStats::PartialArrayTaskStats()
  : _split(0), _pushed(0), _stolen(0), _processed(0)
{}

void PartialArrayTaskStats::accumulate(const PartialArrayTaskStats& stats) {
  _split += stats._split;
  _pushed += stats._pushed;
  _stolen += stats._stolen;
  _processed += stats._processed;
}

void PartialArrayTaskStats::reset() {
  *this = PartialArrayTaskStats();
}

LogTargetHandle PartialArrayTaskStats::log_target() {
  LogTarget(Trace, gc, task, stats) lt;
  return LogTargetHandle(lt);
}

bool PartialArrayTaskStats::is_log_enabled() {
  return log_target().is_enabled();
}

static const char* const stats_hdr[] = {
  "     ----partial array----      arrays      array",
  "thread       push      steal    chunked     chunks",
  "------ ---------- ---------- ---------- ----------"
};

void PartialArrayTaskStats::print_header(outputStream* s, const char* title) {
  s->print_cr("%s:", title);
  for (uint i = 0; i < ARRAY_SIZE(stats_hdr); ++i) {
    s->print_cr("%s", stats_hdr[i]);
  }
}

void PartialArrayTaskStats::print_values_impl(outputStream* s) const {
  // 10 digits for each counter, matching the segments in stats_hdr.
  s->print_cr(" %10zu %10zu %10zu %10zu",
              _pushed, _stolen, _split, _processed);
}

void PartialArrayTaskStats::print_values(outputStream* s, uint id) const {
  // 6 digits for thread number, matching the segement in stats_hdr.
  s->print("%6u", id);
  print_values_impl(s);
}

void PartialArrayTaskStats::print_total(outputStream* s) const {
  // 6 characters for "total" id, matching the segment in stats_hdr.
  s->print("%6s", "total");
  print_values_impl(s);
}

#endif // TASKQUEUE_STATS