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  1. JDK
  2. JDK-8175863

StringTable::lookup_shared should not compute hash code if shared table is empty

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    • Enhancement
    • Status: Resolved
    • P4
    • Resolution: Duplicate
    • 9
    • 10
    • hotspot

    Description

      This is a performance bug.

      oop StringTable::lookup_shared(jchar* name, int len) {
        return _shared_table.lookup((const char*)name,
                                    java_lang_String::hash_code(name, len), len);
      }

      There's no point of calculating the hash code if _shared_table is empty.

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              jiangli Jiangli Zhou
              iklam Ioi Lam
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                Updated:
                Resolved: