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8141049: Remove CARD_REPEAT_HISTO from the G1 code

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Reviewed-by: tschatzl, kbarrett
This commit is contained in:
Bengt Rutisson 2015-11-02 09:13:39 +01:00
parent 6147feb145
commit e3e3e02480
1 changed files with 0 additions and 45 deletions
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45
hotspot/src/share/vm/gc/g1/g1RemSet.cpp
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@ -40,36 +40,6 @@
#include "utilities/intHisto.hpp"
#include "utilities/stack.inline.hpp"
#define CARD_REPEAT_HISTO 0
#if CARD_REPEAT_HISTO
static size_t ct_freq_sz;
static jbyte* ct_freq = NULL;
void init_ct_freq_table(size_t heap_sz_bytes) {
if (ct_freq == NULL) {
ct_freq_sz = heap_sz_bytes/CardTableModRefBS::card_size;
ct_freq = new jbyte[ct_freq_sz];
for (size_t j = 0; j < ct_freq_sz; j++) ct_freq[j] = 0;
}
}
void ct_freq_note_card(size_t index) {
assert(0 <= index && index < ct_freq_sz, "Bounds error.");
if (ct_freq[index] < 100) { ct_freq[index]++; }
}
static IntHistogram card_repeat_count(10, 10);
void ct_freq_update_histo_and_reset() {
for (size_t j = 0; j < ct_freq_sz; j++) {
card_repeat_count.add_entry(ct_freq[j]);
ct_freq[j] = 0;
}
}
#endif
G1RemSet::G1RemSet(G1CollectedHeap* g1, CardTableModRefBS* ct_bs)
: _g1(g1), _conc_refine_cards(0),
_ct_bs(ct_bs), _g1p(_g1->g1_policy()),
@ -302,10 +272,6 @@ void G1RemSet::cleanupHRRS() {
size_t G1RemSet::oops_into_collection_set_do(G1ParPushHeapRSClosure* oc,
CodeBlobClosure* heap_region_codeblobs,
uint worker_i) {
#if CARD_REPEAT_HISTO
ct_freq_update_histo_and_reset();
#endif
// We cache the value of 'oc' closure into the appropriate slot in the
// _cset_rs_update_cl for this worker
assert(worker_i < n_workers(), "sanity");
@ -498,11 +464,6 @@ bool G1RemSet::refine_card(jbyte* card_ptr, uint worker_i,
HeapWord* end = start + CardTableModRefBS::card_size_in_words;
MemRegion dirtyRegion(start, end);
#if CARD_REPEAT_HISTO
init_ct_freq_table(_g1->max_capacity());
ct_freq_note_card(_ct_bs->index_for(start));
#endif
G1ParPushHeapRSClosure* oops_in_heap_closure = NULL;
if (check_for_refs_into_cset) {
// ConcurrentG1RefineThreads have worker numbers larger than what
@ -607,12 +568,6 @@ void G1RemSet::print_summary_info(G1RemSetSummary * summary, const char * header
gclog_or_tty->print_cr("%s", header);
}
#if CARD_REPEAT_HISTO
gclog_or_tty->print_cr("\nG1 card_repeat count histogram: ");
gclog_or_tty->print_cr(" # of repeats --> # of cards with that number.");
card_repeat_count.print_on(gclog_or_tty);
#endif
summary->print_on(gclog_or_tty);
}