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From "Paulex Yang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-665) [classlib][nio]Charset.encode()/decode() should be more safer for multi thread using
Date Mon, 26 Jun 2006 10:48:29 GMT
[classlib][nio]Charset.encode()/decode() should be more safer for multi thread using
------------------------------------------------------------------------------------

         Key: HARMONY-665
         URL: http://issues.apache.org/jira/browse/HARMONY-665
     Project: Harmony
        Type: Bug

  Components: Classlib  
    Reporter: Paulex Yang


As discussion on the mailing list, current Harmony codes may throw exception for the scenario
below:

         for (int i = 0; i < THREAD_NUM; i++) {
              thread[i] = new Thread() {
                  public void run() {
                     sink.write(ByteBuffer.wrap("bytes"
                                        .getBytes(ISO8859_1)));
                    }
        }

String.getBytes() actually invokes Charset.encode(), while spec requires Charset.encode()
to be thread-safe. Current Harmony implementation of Charset.encode() holds lock on this Charset
instance, but doesn't synchronize on the system wide cached CharsetEncoder, so it is not safe
for multi Charset instances in multi threads to encode() concurrently. 

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