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8334097: Parallel: Obsolete HeapFirstMaximumCompactionCount #19673

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8334097: Parallel: Obsolete HeapFirstMaximumCompactionCount #19673

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4 changes: 0 additions & 4 deletions src/hotspot/share/gc/parallel/parallel_globals.hpp
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Original file line number Diff line number Diff line change
@@ -36,10 +36,6 @@
"any dead space)") \
range(0, max_uintx) \
\
product(uintx, HeapFirstMaximumCompactionCount, 3, \
"The collection count for the first maximum compaction") \
range(0, max_uintx) \
\
product(bool, UseMaximumCompactionOnSystemGC, true, \
"Use maximum compaction in the Parallel Old garbage collector " \
"for a system GC") \
3 changes: 1 addition & 2 deletions src/hotspot/share/gc/parallel/psParallelCompact.cpp
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Original file line number Diff line number Diff line change
@@ -837,8 +837,7 @@ bool PSParallelCompact::reassess_maximum_compaction(bool maximum_compaction,
const uint total_invocations = ParallelScavengeHeap::heap()->total_full_collections();
assert(total_invocations >= _maximum_compaction_gc_num, "sanity");
const size_t gcs_since_max = total_invocations - _maximum_compaction_gc_num;
const bool is_interval_ended = gcs_since_max > HeapMaximumCompactionInterval
|| total_invocations == HeapFirstMaximumCompactionCount;
const bool is_interval_ended = gcs_since_max > HeapMaximumCompactionInterval;

// If all regions in old-gen are full
const bool is_region_full =
2 changes: 2 additions & 0 deletions src/hotspot/share/runtime/arguments.cpp
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Original file line number Diff line number Diff line change
@@ -519,6 +519,8 @@ static SpecialFlag const special_jvm_flags[] = {
{ "UseRTMDeopt", JDK_Version::jdk(23), JDK_Version::jdk(24), JDK_Version::jdk(25) },
{ "RTMRetryCount", JDK_Version::jdk(23), JDK_Version::jdk(24), JDK_Version::jdk(25) },
#endif // X86

{ "HeapFirstMaximumCompactionCount", JDK_Version::undefined(), JDK_Version::jdk(24), JDK_Version::jdk(25) },
#ifdef ASSERT
{ "DummyObsoleteTestFlag", JDK_Version::undefined(), JDK_Version::jdk(18), JDK_Version::undefined() },
#endif