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8241071: Generation of classes.jsa with -Xshare:dump is not deterministic

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Reviewed-by: dholmes, stuefe
This commit is contained in:
Ioi Lam 2020-05-05 11:10:02 -07:00
parent 957eb270f0
commit eadcb08c3c
20 changed files with 369 additions and 92 deletions
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14
src/hotspot/share/classfile/systemDictionaryShared.cpp
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@ -174,10 +174,22 @@ public:
}
};
inline unsigned DumpTimeSharedClassTable_hash(InstanceKlass* const& k) {
if (DumpSharedSpaces) {
// Deterministic archive contents
uintx delta = k->name() - MetaspaceShared::symbol_rs_base();
return primitive_hash<uintx>(delta);
} else {
// Deterministic archive is not possible because classes can be loaded
// in multiple threads.
return primitive_hash<InstanceKlass*>(k);
}
}
class DumpTimeSharedClassTable: public ResourceHashtable<
InstanceKlass*,
DumpTimeSharedClassInfo,
primitive_hash<InstanceKlass*>,
&DumpTimeSharedClassTable_hash,
primitive_equals<InstanceKlass*>,
15889, // prime number
ResourceObj::C_HEAP>