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  1. JDK
  2. JDK-4947890

Minimize JNI upcalls in system-properties initialization

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    • b23
    • generic
    • generic

    Description

      The code that initializes system properties, which is partly in the libraries
      (src/share/native/java/lang/System.c and the various java_props*.[ch] files)
      and partly in HotSpot, does (almost) one JNI upcall for each system property
      defined. Since JNI upcalls are relatively expensive we should explore ways of
      reorganizing the code in order to reduce them. The native code could, e.g.,
      pass a single big byte array up to the Java level, which could then decode that
      array in one operation.

      -- ###@###.### 2003/11/3

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          csr for

          CSR - null JDK-8213895 Modify JVM interface functions for property initialization

          • P3 - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8185496 Improve performance of system properties initialization in initPhase1

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8214794 java.specification.version should be only the major version number

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8275145 file.encoding system property has an incorrect value on Windows

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8231769 Test tools/javac/tree/MakeTypeTest.java fails with -Xcheck:jni

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Enhancement - null JDK-8242154 Backport parts of JDK-4947890 to OpenJDK 11u

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8214134 Default for java.vendor.url

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8241947 Minor comment fixes for system property handling

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

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              rriggs Roger Riggs
              mr Mark Reinhold
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