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8341913: Support CDS heap dumping for Shenandoah and Epsilon

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Reviewed-by: iklam, matsaave
This commit is contained in:
Aleksey Shipilev 2024-10-22 17:58:20 +00:00
parent c61d2c5a34
commit 28147dab07
2 changed files with 11 additions and 3 deletions
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9
src/hotspot/share/cds/heapShared.hpp
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@ -143,13 +143,18 @@ class HeapShared: AllStatic {
friend class VerifySharedOopClosure;
public:
// Can this VM write a heap region into the CDS archive? Currently only {G1|Parallel|Serial}+compressed_cp
// Can this VM write a heap region into the CDS archive?
static bool can_write() {
CDS_JAVA_HEAP_ONLY(
if (_disable_writing) {
return false;
}
return (UseG1GC || UseParallelGC || UseSerialGC) && UseCompressedClassPointers;
// Need compressed class pointers for heap region dump.
if (!UseCompressedClassPointers) {
return false;
}
// Almost all GCs support heap region dump, except ZGC (so far).
return !UseZGC;
)
NOT_CDS_JAVA_HEAP(return false;)
}

5
test/hotspot/jtreg/runtime/cds/appcds/sharedStrings/IncompatibleOptions.java
View File

@ -108,9 +108,12 @@ public class IncompatibleOptions {
testDump(1, "-XX:+UseZGC", "-XX:-UseCompressedOops", null, false);
}
// Dump heap objects with ParallelGC and SerialGC
// Dump heap objects with Parallel, Serial, Shenandoah GC
testDump(2, "-XX:+UseParallelGC", "", "", false);
testDump(3, "-XX:+UseSerialGC", "", "", false);
if (GC.Shenandoah.isSupported()) {
testDump(4, "-XX:+UseShenandoahGC", "", "", false);
}
// Explicitly archive with compressed oops, run without.
testDump(5, "-XX:+UseG1GC", "-XX:+UseCompressedOops", null, false);