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8313593: Generational ZGC: NMT assert when the heap fails to expand

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Reviewed-by: stuefe, tschatzl, eosterlund
This commit is contained in:
Stefan Karlsson 2023-08-02 12:13:47 +00:00
parent 46fbedb2be
commit 19e2c8c321
1 changed files with 6 additions and 2 deletions

8
src/hotspot/share/gc/z/zPhysicalMemory.cpp

@ -310,7 +310,9 @@ bool ZPhysicalMemoryManager::commit(ZPhysicalMemory& pmem) {
const size_t committed = _backing.commit(segment.start(), segment.size());
// Register with NMT
ZNMT::commit(segment.start(), committed);
if (committed > 0) {
ZNMT::commit(segment.start(), committed);
}
// Register committed segment
if (!pmem.commit_segment(i, committed)) {
@ -336,7 +338,9 @@ bool ZPhysicalMemoryManager::uncommit(ZPhysicalMemory& pmem) {
const size_t uncommitted = _backing.uncommit(segment.start(), segment.size());
// Unregister with NMT
ZNMT::uncommit(segment.start(), uncommitted);
if (uncommitted > 0) {
ZNMT::uncommit(segment.start(), uncommitted);
}
// Deregister uncommitted segment
if (!pmem.uncommit_segment(i, uncommitted)) {