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diff src/share/vm/gc_implementation/g1/concurrentMark.cpp @ 12080:5888334c9c24

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7145569: G1: optimize nmethods scanning Summary: Add a list of nmethods to the RSet for a region that contain references into the region. Skip scanning the code cache during root scanning and scan the nmethod lists during RSet scanning instead. Reviewed-by: tschatzl, brutisso, mgerdin, twisti, kvn
author johnc
date Thu, 15 Aug 2013 10:52:18 +0200
parents f2110083203d
children ff218fdb30ba
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/g1/concurrentMark.cpp	Thu Aug 15 10:05:50 2013 +0200
+++ b/src/share/vm/gc_implementation/g1/concurrentMark.cpp	Thu Aug 15 10:52:18 2013 +0200
@@ -4529,7 +4529,7 @@
     _total_prev_live_bytes(0), _total_next_live_bytes(0),
     _hum_used_bytes(0), _hum_capacity_bytes(0),
     _hum_prev_live_bytes(0), _hum_next_live_bytes(0),
-    _total_remset_bytes(0) {
+    _total_remset_bytes(0), _total_strong_code_roots_bytes(0) {
   G1CollectedHeap* g1h = G1CollectedHeap::heap();
   MemRegion g1_committed = g1h->g1_committed();
   MemRegion g1_reserved = g1h->g1_reserved();
@@ -4553,9 +4553,11 @@
                 G1PPRL_BYTE_H_FORMAT
                 G1PPRL_BYTE_H_FORMAT
                 G1PPRL_DOUBLE_H_FORMAT
+                G1PPRL_BYTE_H_FORMAT
                 G1PPRL_BYTE_H_FORMAT,
                 "type", "address-range",
-                "used", "prev-live", "next-live", "gc-eff", "remset");
+                "used", "prev-live", "next-live", "gc-eff",
+                "remset", "code-roots");
   _out->print_cr(G1PPRL_LINE_PREFIX
                 G1PPRL_TYPE_H_FORMAT
                 G1PPRL_ADDR_BASE_H_FORMAT
@@ -4563,9 +4565,11 @@
                 G1PPRL_BYTE_H_FORMAT
                 G1PPRL_BYTE_H_FORMAT
                 G1PPRL_DOUBLE_H_FORMAT
+                G1PPRL_BYTE_H_FORMAT
                 G1PPRL_BYTE_H_FORMAT,
                 "", "",
-                "(bytes)", "(bytes)", "(bytes)", "(bytes/ms)", "(bytes)");
+                "(bytes)", "(bytes)", "(bytes)", "(bytes/ms)",
+                "(bytes)", "(bytes)");
 }
 
 // It takes as a parameter a reference to one of the _hum_* fields, it
@@ -4608,6 +4612,8 @@
   size_t next_live_bytes = r->next_live_bytes();
   double gc_eff          = r->gc_efficiency();
   size_t remset_bytes    = r->rem_set()->mem_size();
+  size_t strong_code_roots_bytes = r->rem_set()->strong_code_roots_mem_size();
+
   if (r->used() == 0) {
     type = "FREE";
   } else if (r->is_survivor()) {
@@ -4642,6 +4648,7 @@
   _total_prev_live_bytes += prev_live_bytes;
   _total_next_live_bytes += next_live_bytes;
   _total_remset_bytes    += remset_bytes;
+  _total_strong_code_roots_bytes += strong_code_roots_bytes;
 
   // Print a line for this particular region.
   _out->print_cr(G1PPRL_LINE_PREFIX
@@ -4651,9 +4658,11 @@
                  G1PPRL_BYTE_FORMAT
                  G1PPRL_BYTE_FORMAT
                  G1PPRL_DOUBLE_FORMAT
+                 G1PPRL_BYTE_FORMAT
                  G1PPRL_BYTE_FORMAT,
                  type, bottom, end,
-                 used_bytes, prev_live_bytes, next_live_bytes, gc_eff , remset_bytes);
+                 used_bytes, prev_live_bytes, next_live_bytes, gc_eff,
+                 remset_bytes, strong_code_roots_bytes);
 
   return false;
 }
@@ -4669,7 +4678,8 @@
                  G1PPRL_SUM_MB_PERC_FORMAT("used")
                  G1PPRL_SUM_MB_PERC_FORMAT("prev-live")
                  G1PPRL_SUM_MB_PERC_FORMAT("next-live")
-                 G1PPRL_SUM_MB_FORMAT("remset"),
+                 G1PPRL_SUM_MB_FORMAT("remset")
+                 G1PPRL_SUM_MB_FORMAT("code-roots"),
                  bytes_to_mb(_total_capacity_bytes),
                  bytes_to_mb(_total_used_bytes),
                  perc(_total_used_bytes, _total_capacity_bytes),
@@ -4677,6 +4687,7 @@
                  perc(_total_prev_live_bytes, _total_capacity_bytes),
                  bytes_to_mb(_total_next_live_bytes),
                  perc(_total_next_live_bytes, _total_capacity_bytes),
-                 bytes_to_mb(_total_remset_bytes));
+                 bytes_to_mb(_total_remset_bytes),
+                 bytes_to_mb(_total_strong_code_roots_bytes));
   _out->cr();
 }