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<chapter>
  <header>
    <copyright>
      <year>2000</year><year>2018</year>
      <holder>Ericsson AB. All Rights Reserved.</holder>
    </copyright>
    <legalnotice>
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
      You may obtain a copy of the License at
 
          http://www.apache.org/licenses/LICENSE-2.0

      Unless required by applicable law or agreed to in writing, software
      distributed under the License is distributed on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      See the License for the specific language governing permissions and
      limitations under the License.

    </legalnotice>

    <title>Jinterface Release Notes</title>
    <prepared>otp_appnotes</prepared>
    <docno>nil</docno>
    <date>nil</date>
    <rev>nil</rev>
    <file>notes.xml</file>
  </header>
  <p>This document describes the changes made to the Jinterface application.</p>

<section><title>Jinterface 1.12</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Accept 64-bit process identifiers from external nodes.
	    This is the first step in an upgrade path toward using
	    64-bit pids in a future OTP release.</p>
          <p>
	    Own Id: OTP-16720 Aux Id: PR-2680 </p>
        </item>
        <item>
          <p>
	    Accept references up to a size of 160-bits from remote
	    nodes. This is the first step in an upgrade path toward
	    using references up to 160-bits in a future OTP release.</p>
          <p>
	    Own Id: OTP-17005 Aux Id: OTP-16718 </p>
        </item>
        <item>
          <p>
	    Accept 64-bit port identifiers from external nodes. This
	    is the first step in an upgrade path toward using 64-bit
	    port identifiers in a future OTP release.</p>
          <p>
	    Own Id: OTP-17007</p>
        </item>
        <item>
          <p>
	    Make <c>OtpErlangExternalFun</c>'s fields <c>module</c>,
	    <c>function</c> and <c>arity</c> public.</p>
          <p>
	    Own Id: OTP-17170 Aux Id: PR-3005 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.11.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    A <seeguide
	    marker="erts:erl_dist_protocol#new_link_protocol">new
	    link protocol</seeguide> has been introduced which
	    prevents links from ending up in an inconsistent state
	    where one participant considers itself linked while the
	    other doesn't. This bug has always existed in the
	    distributed case, but has since OTP 21 also existed in
	    the node local case since the distributed link protocol
	    then was adopted also for node local links. The bug
	    could, however, only trigger if both participants
	    operated on the link simultaneously.</p>
          <p>
	    Own Id: OTP-17127</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.11</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Increased size of node incarnation numbers (aka
	    "creation"), from 2 bits to 32 bits. This will reduce the
	    risk of pids/ports/refs, from different node incarnation
	    with the same name, being mixed up.</p>
          <p>
	    Own Id: OTP-15603</p>
        </item>
        <item>
          <p>
	    Improved node connection setup handshake protocol. Made
	    possible to agree on protocol version without dependence
	    on <c>epmd</c> or other prior knowledge of peer node
	    version. Also added exchange of node incarnation
	    ("creation") values and expanded the distribution
	    capability flag field from 32 to 64 bits.</p>
          <p>
	    Own Id: OTP-16229</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.10.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Replaced deprecated &lt;tt&gt; with &lt;code&gt; in
	    documentation.</p>
          <p>
	    Own Id: OTP-16050</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.10</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    All incorrect (that is, all) uses of "can not" has been
	    corrected to "cannot" in source code comments,
	    documentation, examples, and so on.</p>
          <p>
	    Own Id: OTP-14282 Aux Id: PR-1891 </p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p>Added support to receive export funs (<c>fun
	    M:F/A</c>).</p>
	    <p>Before this change, export funs sent to a jinterface
	    node were encoded using an undocumented fallback tuple
	    format <c>{M,F}</c>. Existing jinterface implementations
	    expecting these tuples must be changed to instead use the
	    existing <c>OtpErlangExternalFun</c> class.</p>
          <p>
	    *** POTENTIAL INCOMPATIBILITY ***</p>
          <p>
	    Own Id: OTP-15774 Aux Id: OTP-15712 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.9.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Improved documentation.</p>
          <p>
	    Own Id: OTP-15190</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.9</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Add module package name for Java 9</p>
          <p>
	    Own Id: OTP-14844</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.8.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p> Removed all old unused files in the documentation.
	    </p>
          <p>
	    Own Id: OTP-14475 Aux Id: ERL-409, PR-1493 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.8</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Remove generation of atoms in old latin1 external format
	    in the distribution between erlang nodes,
	    <c>erl_interface</c>, and <c>jinterface</c>. The new utf8
	    format for atoms was introduced in OTP R16. An OTP 20
	    node can therefore not connect to nodes older than R16.</p>
          <p>
	    Atoms that can be encoded using latin1 are still encoded
	    by <c>term_to_binary()</c> using latin1 encoding. Note
	    that all atoms will by default be encoded using utf8 in a
	    future Erlang/OTP release. For more information see the
	    documentation of <seemfa
	    marker="erts:erlang#term_to_binary/2"><c>erlang:term_to_binary/2</c></seemfa>.</p>
          <p>
	    Own Id: OTP-14337</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.7.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Update build scripts to not make assumtions about where
	    env, cp and perl are located.</p>
          <p>
	    Own Id: OTP-13800</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.7</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Fix Jinterface build on Maven</p>
          <p>
	    Own Id: OTP-13482</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Handle terms (pids,ports and refs) from nodes with a
	    'creation' value larger than 3. This is a preparation of
	    the distribution protocol to allow OTP 19 nodes to
	    correctly communicate with future nodes (20 or higher).
	    The 'creation' value differentiates different
	    incarnations of the same node (name).</p>
          <p>
	    Own Id: OTP-13488</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.6.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Add missing Term tag matching switch statement that was
	    missing an external fun tag.</p>
          <p>
	    Own Id: OTP-13106</p>
        </item>
        <item>
          <p>
	    fixed writing small compressed values.</p>
          <p>
	    Own Id: OTP-13165</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.6</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Reformat the sources for JInterface uniformly and
	    according to the standard Java style guidelines. Provide
	    description of the rules applied in Eclipse format (for
	    other editors one can check the settings against these).</p>
          <p>
	    In short, the formatting style is: * indentation uses
	    only spaces; each level is 4 positions * no trailing
	    whitespace * mostly default Java style formatting (any
	    difference is minor) * always use {} blocks * use 'final'
	    as much as possible</p>
          <p>
	    Own Id: OTP-12333</p>
        </item>
        <item>
          <p>
	    Remove extra @param in javadoc as this gives an error
	    when building the docs in java 1.8</p>
          <p>
	    Own Id: OTP-12746</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Add basic transport factory implementation. This makes
	    possible creating connections between nodes using ssh
	    channels for example.</p>
          <p>
	    Own Id: OTP-12686</p>
        </item>
        <item>
          <p>
	    Add Jinterface generic match and bind methods to provide
	    low level interface base methods sufficient for variety
	    of higher level pattern matching/variable binding
	    implementations.</p>
          <p>
	    Own Id: OTP-12691</p>
        </item>
        <item>
          <p>
	    Minimal Java version is now 1.6</p>
          <p>
	    Own Id: OTP-12715</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5.12</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    handle empty .erlang.cookie without crashing and
	    OtpErlangList.clone must not return null</p>
          <p>
	    Own Id: OTP-12210</p>
        </item>
        <item>
          <p>
	    This fixes all the compilation warnings in the Java code</p>
          <p>
	    Own Id: OTP-12211</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Added an .appup file for the application.</p>
          <p>
	    Own Id: OTP-12358 Aux Id: OTP-12178 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5.11</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Added a <c>.app</c> file for the application.</p>
          <p>
	    Own Id: OTP-12178</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5.10</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Array now show meaningful values in exceptions.</p>
          <p>
	    Own Id: OTP-12049</p>
        </item>
        <item>
          <p>
	    Documentation improvements.</p>
          <p>
	    Own Id: OTP-12050</p>
        </item>
        <item>
          <p>
	    Include the cause when raising a new IOException, which
	    should make the reason for the exception clearer.</p>
          <p>
	    Own Id: OTP-12075</p>
        </item>
        <item>
          <p>
	    Arrays (here: md5 and freeVars) must not be compared with
	    equals, which is broken (compares identity).</p>
          <p>
	    Own Id: OTP-12121</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5.9</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Implement support for Maps</p>
          <p>
	    The API and implementation are simplistic, like for lists
	    and tuples, using arrays and without any connection to
	    java.util.Map. (Thanks to Vlad Dumitrescu)</p>
          <p>
	    Own Id: OTP-11703</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5.8</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Fixed a bug in OtpErlangTuple constructor. Thanks to Vlad
	    Dumitrescu.</p>
          <p>
	    Own Id: OTP-10819</p>
        </item>
        <item>
          <p>
	    Fixed finding cookie file on windows. Thanks to Vlad
	    Dumitrescu</p>
          <p>
	    Own Id: OTP-10821</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Don't compress external binary format if this increases
	    the size. Thanks to Nico Kruber.</p>
          <p>
	    Own Id: OTP-10822</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5.7</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    fix reading compressed binary terms from Java (Thanks to
	    Nico Kruber)</p>
          <p>
	    Own Id: OTP-10505</p>
        </item>
        <item>
          <p>
	    OtpEpmd.lokupNames() no longer hangs when badly
	    configured (Thanks to Vlad Dumitrescu)</p>
          <p>
	    Own Id: OTP-10579</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p>Where necessary a comment stating encoding has been
	    added to Erlang files. The comment is meant to be removed
	    in Erlang/OTP R17B when UTF-8 becomes the default
	    encoding. </p>
          <p>
	    Own Id: OTP-10630</p>
        </item>
        <item>
          <p>
	    Limited support for unicode atoms in the external format
	    and in the internal representation of the vm. This is a
	    preparative feature in order to support communication
	    with future releases of Erlang/OTP that may create
	    unicode atoms.</p>
          <p>
	    Own Id: OTP-10753</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5.6</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Correct spelling of registered (Thanks to Richard
	    Carlsson)</p>
          <p>
	    Own Id: OTP-9925</p>
        </item>
        <item>
          <p>
	    Java 1.5 has a bug where detecting codepoint offsets in
	    strings that are created by String.substring() gives
	    wrong results. The new implementation uses a different
	    method, avoinding the issue. (Thanks to Vlad Dumitrescu)</p>
          <p>
	    Own Id: OTP-9927</p>
        </item>
        <item>
          <p>
	    Improve error message when creating a too long
	    OtpErlangAtom. Also print the value that we tried to use
	    for the atom. (Thanks to Vlad Dumitrescu)</p>
          <p>
	    Own Id: OTP-9928</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5.5</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    JInterface: improve OtpOutputStream buffer allocation</p>
          <p>
	    Previously, the buffer was increased linearly by 2048
	    bytes. I now propose to use an exponential increase
	    function (similar to Javas ArrayList, e.g. always at
	    least +50%). This significantly increases performance of
	    e.g. doRPC for large parameters. (Thanks to Nico Kruber)</p>
          <p>
	    Own Id: OTP-9806</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5.4</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Some malformed distribution messages could cause VM to
	    crash, this is now corrected.</p>
          <p>
	    Own Id: OTP-8993</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5.3.2</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    The OtpMbox class did not have a hash() method, which it
	    should have because it overrides equals().</p>
          <p>
	    Own Id: OTP-8854</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5.3.1</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    An pom.xml file is now generated. (Thanks to Gabor
	    Liptak.)</p>
          <p>
	    Own Id: OTP-8841</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5.3</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p>The documentation is now possible to build in an open
	    source environment after a number of bugs are fixed and
	    some features are added in the documentation build
	    process. </p>
	    <p>- The arity calculation is updated.</p>
	    <p>- The module prefix used in the function names for
	    bif's are removed in the generated links so the links
	    will look like
	    "http://www.erlang.org/doc/man/erlang.html#append_element-2"
	    instead of
	    "http://www.erlang.org/doc/man/erlang.html#erlang:append_element-2".</p>
	    <p>- Enhanced the menu positioning in the html
	    documentation when a new page is loaded.</p>
	    <p>- A number of corrections in the generation of man
	    pages (thanks to Sergei Golovan)</p>
	    <p>- The legal notice is taken from the xml book file so
	    OTP's build process can be used for non OTP
	    applications.</p>
          <p>
	    Own Id: OTP-8343</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5.2</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    The documentation is now built with open source tools
	    (xsltproc and fop) that exists on most platforms. One
	    visible change is that the frames are removed.</p>
          <p>
	    Own Id: OTP-8201</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Many Erlang classes, e.g. OtpErlangRef, was missing an
	    implementation of the hashCode() method, making it futile
	    to put them in hash structures such as HashMap. Bug and
	    patch provided by Paul Guyot. We extended the patch to
	    all classes and improved (?) on the hash algorithm.</p>
          <p>
	    Own Id: OTP-7899</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    jinterface uses the new environment variable
	    ERL_EPMD_PORT the same way that erl, epmd and
	    erl_interface do since R13A.</p>
          <p>
	    Own Id: OTP-7885</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.5</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    A number of fixes and improvements from the ErlIDE group;
	    Vlad Dumitrescu and Jakob Cederlund: JDK 1.5 is now a
	    minimal requirement for building Jinterface. New method:
	    OtpEpmd.lookupNames. OtpErlangList is now iterable.
	    Non-proper lists are now allowed - you have to test if a
	    list is proper or not. Non-proper lists can also be
	    created. New methods: isProper, getHead, getTail and
	    getNthTail. The get tail methods creates a sublist object
	    that re-uses the original list. OtpErlangPid is now
	    Comparable. Empty atoms can now be constructed, a missing
	    feature pointed out by Sebastien Boisgerault on
	    erlang-questions.</p>
          <p>
	    *** POTENTIAL INCOMPATIBILITY ***</p>
          <p>
	    Own Id: OTP-7832</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.4.2</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    A bug when Jinterface did not detect remote node
	    disconnects has been corrected.</p>
          <p>
	    Own Id: OTP-7624</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.4.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Jinterface has been fixed to use the loopback interface
	    when connecting to the Erlang Port Mapper Daemon - epmd.
	    This facilitates firewall configuration and saves
	    resources.</p>
          <p>
	    Own Id: OTP-7103</p>
        </item>
        <item>
	    <p>Jinterface now refuses to connect to another node that
	    does not agree on the other node's name. This has been a
	    problem in that a connection was set up, but not used on
	    a following send, which caused a second erroneous
	    connection attempt to fail since the other (Erlang) node
	    rejects a connection due to name disagreement.</p>
	    <p>Problem reported and dissected by Alexander Lamb</p>
          <p>
	    Own Id: OTP-7330</p>
        </item>
      </list>
    </section>

</section>

<section><title>Jinterface 1.4</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p>Jinterface has been updated to handle compressed
	    terms, bitstring, new (IEEE) floats and bignums. This has
	    caused a few incompatibilities.</p>
	    <p>com.ericsson.otp.erlang.OtpOutputStream now extends
	    java.io.ByteArrayOutputStream, previously
	    java.lang.Object, and hence the method size() now return
	    the number of bytes in the stream as dictated by the new
	    parent class and not the buffer length as before. The new
	    method length() returns what the old size() did return.
	    The method count() is deprecated as it returns the same
	    as the new size().</p>
	    <p>com.ericsson.otp.erlang.OtpErlangLong now can handle
	    larger values than 64-bit. Previously when larger than
	    64-bit integers were sent to a Jinterface node, it caused
	    an com.ericsson.otp.erlang.OtpDecodeException. Now the
	    integer is accepted, but the return value of longValue()
	    is silently truncated, as opposed to the return value of
	    intValue() that now and previously raises an
	    com.ericsson.otp.erlang.OtpRangeException for
	    unrepresentable values. The new methods isLong() and
	    isULong() can be used to determine if the value fits in a
	    long.</p>
          <p>
	    *** POTENTIAL INCOMPATIBILITY ***</p>
          <p>
	    Own Id: OTP-6809</p>
        </item>
      </list>
    </section>

</section>

  <section>
    <title>Jinterface 1.3</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p><c>OtpMbox.receive()</c> and <c>OtpMbox.receive(long timeout)</c> can now throw
            <c>OtpErlangDecodeException</c> if the received message
            cannot be decoded. <c>null</c> is now only returned from
            <c>OtpMbox.receive(long timeout)</c> if a timeout occurs.
            <c>OtpMbox.receive()</c> will never return <c>null</c>.</p>
          <p>*** POTENTIAL INCOMPATIBILITY ***</p>
          <p>Own Id: OTP-3932 Aux Id: seq5196 </p>
        </item>
        <item>
          <p>Strings longer than 65535 bytes were encoded wrong by
            jinterface.</p>
          <p>Own Id: OTP-4883 Aux Id: OTP-4865 </p>
        </item>
        <item>
          <p>Misc bugfixes: </p>
          <list type="bulleted">
            <item>
              <p>A node pinging itself does no
                longer cause the java program to hang.</p>
              <p></p>
            </item>
            <item>
              <p><c>OtpMbox.close()</c> uses exit reason
                <c>'normal'</c> (atom) instead of <c>"normal"</c>
                (string).</p>
              <p></p>
            </item>
            <item>
              <p>Added <c>OtpNode.closeMbox(OtpMbox mbox, OtpErlangObject reason)</c>.</p>
              <p></p>
            </item>
            <item>
              <p>Added <c>OtpMbox.exit(OtpErlangObject reason)</c>
                and <c>OtpMbox.exit(String reason)</c>.</p>
              <p></p>
            </item>
            <item>
              <p>Added <c>OtpMbox.exit(OtpErlangPid to, OtpErlangObject reason)</c>.</p>
              <p></p>
            </item>
            <item>
              <p><c>OtpMbox.exit(OtpErlangPid to, String reason)</c>
                is now equivalent to <c>OtpMbox.exit(to, new OtpErlangAtom(reason))</c>.</p>
              <p></p>
            </item>
            <item>Exit signals from an Erlang node can now contain
             any erlang term as reason, not only atoms. </item>
          </list>
          <p>Own Id: OTP-5088</p>
        </item>
        <item>
          <p>For java versions 1.3.1 or later, <c>localStatus</c> was
            not sent to registered status handler when
            <c>OtpNode.close()</c> was called. This is now corrected.</p>
          <p>Own Id: OTP-5169</p>
        </item>
      </list>
    </section>

    <section>
      <title>Improvements and New Features</title>
      <list type="bulleted">
        <item>
          <p>Process identifiers and port identifiers have been
            made more unique. Previously 18 bits were used as id in
            the internal representation of process and port
            identifiers. Now 28 bits are used. </p>
          <p>The maximum
            limit on the number of concurrently existing processes
            due to the representation of pids has been increased to
            268435456 processes. The same is true for ports. This
            limit will at least on a 32-bit architecture be
            impossible to reach due to memory shortage. </p>
          <p><em>NOTE:</em> By default, the <c>ERTS</c>, and the
            <c>erl_interface</c>, <c>ei</c>, and <c>jinterface</c>
            libraries are now only guaranteed to be compatible with
            other Erlang/OTP components from the same release. It is
            possible to set each component in compatibility mode of
            an earlier release, though. See the documentation for
            respective component on how to set it in compatibility
            mode. </p>
          <p>*** POTENTIAL INCOMPATIBILITY ***</p>
          <p>Own Id: OTP-4968 Aux Id: OTP-4196 </p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Jinterface 1.2.1.2</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>Output of Java long was truncated to 32 bits. IDL long
            long and unsigned long long could not be used in a struct
            for the Java backend. All unsigned integer types for the
            Java backend had broken marshalling for large values.
            These bugs has now been fixed.</p>
          <p>Own Id: OTP-4763 Aux Id: seq8024 </p>
        </item>
      </list>
    </section>
  </section>
</chapter>

