Mercurial > hg > graal-compiler
diff src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp @ 17753:191174b49bec
8035406: Improve data structure for Code Cache remembered sets
Summary: Change the code cache remembered sets data structure from a GrowableArray to a chunked list of nmethods. This makes the data structure more amenable to parallelization, and decreases freeing time.
Reviewed-by: mgerdin, brutisso
| author | tschatzl |
|---|---|
| date | Mon, 24 Mar 2014 15:30:14 +0100 |
| parents | b7e42ada4898 |
| children | 96b1c2e06e25 |
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--- a/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp Mon Mar 17 15:18:45 2014 +0100 +++ b/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp Mon Mar 24 15:30:14 2014 +0100 @@ -5934,6 +5934,8 @@ // strong code roots for a particular heap region. migrate_strong_code_roots(); + purge_code_root_memory(); + if (g1_policy()->during_initial_mark_pause()) { // Reset the claim values set during marking the strong code roots reset_heap_region_claim_values(); @@ -6810,6 +6812,13 @@ g1_policy()->phase_times()->record_strong_code_root_migration_time(migration_time_ms); } +void G1CollectedHeap::purge_code_root_memory() { + double purge_start = os::elapsedTime(); + G1CodeRootSet::purge_chunks(G1CodeRootsChunkCacheKeepPercent); + double purge_time_ms = (os::elapsedTime() - purge_start) * 1000.0; + g1_policy()->phase_times()->record_strong_code_root_purge_time(purge_time_ms); +} + // Mark all the code roots that point into regions *not* in the // collection set. // @@ -6880,7 +6889,7 @@ // Code roots should never be attached to a continuation of a humongous region assert(hrrs->strong_code_roots_list_length() == 0, err_msg("code roots should never be attached to continuations of humongous region "HR_FORMAT - " starting at "HR_FORMAT", but has "INT32_FORMAT, + " starting at "HR_FORMAT", but has "SIZE_FORMAT, HR_FORMAT_PARAMS(hr), HR_FORMAT_PARAMS(hr->humongous_start_region()), hrrs->strong_code_roots_list_length())); return false;