src/hotspot/share/oops/symbol.cpp

@@ -84,10 +84,50 @@
    assert(SafepointSynchronize::is_at_safepoint(), "must be at a safepoint");
    _hash_and_refcount =  pack_hash_and_refcount(extract_hash(_hash_and_refcount), PERM_REFCOUNT);
  }
  #endif
  
+ Symbol* Symbol::fundamental_name(TRAPS) {
+   if (char_at(0) == JVM_SIGNATURE_CLASS && ends_with(JVM_SIGNATURE_ENDCLASS)) {
+     return SymbolTable::new_symbol(this, 1, utf8_length() - 1);
+   } else {
+     // reference count is incremented to be consistent with the behavior with
+     // the SymbolTable::new_symbol() call above
+     this->increment_refcount();
+     return this;
+   }
+ }
+ 
+ bool Symbol::is_same_fundamental_type(Symbol* s) const {
+   if (this == s) return true;
+   if (utf8_length() < 3) return false;
+   int offset1, offset2, len;
+   if (ends_with(JVM_SIGNATURE_ENDCLASS)) {
+     if (char_at(0) != JVM_SIGNATURE_CLASS) return false;
+     offset1 = 1;
+     len = utf8_length() - 2;
+   } else {
+     offset1 = 0;
+     len = utf8_length();
+   }
+   if (ends_with(JVM_SIGNATURE_ENDCLASS)) {
+     if (s->char_at(0) != JVM_SIGNATURE_CLASS) return false;
+     offset2 = 1;
+   } else {
+     offset2 = 0;
+   }
+   if ((offset2 + len) > s->utf8_length()) return false;
+   if ((utf8_length() - offset1 * 2) != (s->utf8_length() - offset2 * 2))
+     return false;
+   int l = len;
+   while (l-- > 0) {
+     if (char_at(offset1 + l) != s->char_at(offset2 + l))
+       return false;
+   }
+   return true;
+ }
+ 
  // ------------------------------------------------------------------
  // Symbol::index_of
  //
  // Test if we have the give substring at or after the i-th char of this
  // symbol's utf8 bytes.