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8299229: [JVMCI] add support for UseZGC

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Reviewed-by: eosterlund, kvn
This commit is contained in:
Tom Rodriguez 2023-05-08 18:40:18 +00:00
parent 14df5c130e
commit 5e1fe43080
40 changed files with 1098 additions and 389 deletions
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31
src/hotspot/share/runtime/arguments.cpp
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@ -1477,9 +1477,6 @@ void Arguments::set_use_compressed_oops() {
if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) {
warning("Max heap size too large for Compressed Oops");
FLAG_SET_DEFAULT(UseCompressedOops, false);
if (COMPRESSED_CLASS_POINTERS_DEPENDS_ON_COMPRESSED_OOPS) {
FLAG_SET_DEFAULT(UseCompressedClassPointers, false);
}
}
}
#endif // _LP64
@ -1497,22 +1494,15 @@ void Arguments::set_use_compressed_klass_ptrs() {
// be completely avoided instead. So it is better not to perform this trick. And by
// not having that reliance, large heaps, or heaps not supporting compressed oops,
// can still use compressed class pointers.
if (COMPRESSED_CLASS_POINTERS_DEPENDS_ON_COMPRESSED_OOPS && !UseCompressedOops) {
if (UseCompressedClassPointers) {
warning("UseCompressedClassPointers requires UseCompressedOops");
}
FLAG_SET_DEFAULT(UseCompressedClassPointers, false);
} else {
// Turn on UseCompressedClassPointers too
if (FLAG_IS_DEFAULT(UseCompressedClassPointers)) {
FLAG_SET_ERGO(UseCompressedClassPointers, true);
}
// Check the CompressedClassSpaceSize to make sure we use compressed klass ptrs.
if (UseCompressedClassPointers) {
if (CompressedClassSpaceSize > KlassEncodingMetaspaceMax) {
warning("CompressedClassSpaceSize is too large for UseCompressedClassPointers");
FLAG_SET_DEFAULT(UseCompressedClassPointers, false);
}
// Turn on UseCompressedClassPointers too
if (FLAG_IS_DEFAULT(UseCompressedClassPointers)) {
FLAG_SET_ERGO(UseCompressedClassPointers, true);
}
// Check the CompressedClassSpaceSize to make sure we use compressed klass ptrs.
if (UseCompressedClassPointers) {
if (CompressedClassSpaceSize > KlassEncodingMetaspaceMax) {
warning("CompressedClassSpaceSize is too large for UseCompressedClassPointers");
FLAG_SET_DEFAULT(UseCompressedClassPointers, false);
}
}
#endif // _LP64
@ -1677,9 +1667,6 @@ void Arguments::set_heap_size() {
"Please check the setting of MaxRAMPercentage %5.2f."
,(size_t)reasonable_max, (size_t)max_coop_heap, MaxRAMPercentage);
FLAG_SET_ERGO(UseCompressedOops, false);
if (COMPRESSED_CLASS_POINTERS_DEPENDS_ON_COMPRESSED_OOPS) {
FLAG_SET_ERGO(UseCompressedClassPointers, false);
}
} else {
reasonable_max = MIN2(reasonable_max, max_coop_heap);
}