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    <p>Hi Troy,</p>
    <p>I tested more SVN revisions of SWORD trunk (starting from my
      stable version until I hit the bug) and I can now say that</p>
    <p>SVN Rev. 3759 is the last SVN revision that works without hanging
      for the below mentioned scenario. (20 out of 20 tests successful)<br>
    </p>
    <p>SVN Rev. 3760 is the first SVN revision where the hanging occurs.
      The commit message is "First cut at better isolation of FileIO to
      FileMgr and providing a WIN32 impl with works with wchar_t".</p>
    <p>Modified files:<br>
      include/filemgr.h<br>
      include/swbuf.h<br>
      lib/bcppmake/libsword.bpr<br>
      src/mgr/curlftpt.cpp<br>
      src/mgr/curlhttpt.cpp<br>
      src/mgr/filemgr.cpp<br>
      src/mgr/installmgr.cpp<br>
      src/mgr/swmgr.cpp<br>
      src/utilfuns/utilstr.cpp<br>
      <br>
      Maybe this helps to find the root-cause.<br>
      <br>
      Best regards,<br>
      Tobias<br>
    </p>
    <div class="moz-cite-prefix">On 10/12/20 9:20 PM, Tobias Klein
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:fcc4672a-feaf-4eec-9f7c-a0acdc57faf0@tklein.info">
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <p>I'll see whether I can collect a stack trace. It may take some
        time until I have it.</p>
      <p>The multi-threaded "remote source refreshing" worked without
        issues until recently.<br>
      </p>
      <p>Here is the code of the function that does the actual work in a
        thread.<br>
        See
        <a class="moz-txt-link-freetext"
href="https://github.com/tobias-klein/node-sword-interface/blob/787160ccb4b3bab2a762d22f74031c7237edc803/src/sword_backend/repository_interface.cpp#L105"
          moz-do-not-send="true">https://github.com/tobias-klein/node-sword-interface/blob/787160ccb4b3bab2a762d22f74031c7237edc803/src/sword_backend/repository_interface.cpp#L105</a>.</p>
      <div style="color: #d4d4d4;background-color: #1e1e1e;font-family: 'Droid Sans Mono', 'monospace', monospace, 'Droid Sans Fallback';font-weight: normal;font-size: 14px;line-height: 19px;white-space: pre;"><div><span style="color: #569cd6;">int</span><span style="color: #d4d4d4;"> </span><span style="color: #4ec9b0;">RepositoryInterface</span><span style="color: #d4d4d4;">::</span><span style="color: #dcdcaa;">refreshIndividualRemoteSource</span><span style="color: #d4d4d4;">(</span><span style="color: #4ec9b0;">string</span><span style="color: #d4d4d4;"> </span><span style="color: #9cdcfe;">remoteSourceName</span><span style="color: #d4d4d4;">, </span><span style="color: #4ec9b0;">std</span><span style="color: #d4d4d4;">::</span><span style="color: #4ec9b0;">function</span><span style="color: #d4d4d4;"><</span><span style="color: #569cd6;">void</span><span style="color: #d4d4d4;">(</span><span style="color: #569cd6;">unsigned</span><span style="color: #d4d4d4;"> </span><span style="color: #569cd6;">int</span><span style="color: #d4d4d4;"> </span><span style="color: #4ec9b0;">progress</span><span style="color: #d4d4d4;">)></span><span style="color: #569cd6;">*</span><span style="color: #d4d4d4;"> </span><span style="color: #9cdcfe;">progressCallback</span><span style="color: #d4d4d4;">)</span></div><div><span style="color: #d4d4d4;">{</span></div><div><span style="color: #6a9955;">    //cout << "Refreshing source " << remoteSourceName << endl << flush;</span></div><div><span style="color: #d4d4d4;">    </span><span style="color: #4ec9b0;">InstallSource</span><span style="color: #d4d4d4;">* </span><span style="color: #9cdcfe;">source</span><span style="color: #d4d4d4;"> = </span><span style="color: #569cd6;">this</span><span style="color: #d4d4d4;">-></span><span style="color: #dcdcaa;">getRemoteSource</span><span style="color: #d4d4d4;">(</span><span style="color: #9cdcfe;">remoteSourceName</span><span style="color: #d4d4d4;">);</span></div><div><span style="color: #d4d4d4;">    </span><span style="color: #569cd6;">int</span><span style="color: #d4d4d4;"> </span><span style="color: #9cdcfe;">result</span><span style="color: #d4d4d4;"> = </span><span style="color: #569cd6;">this</span><span style="color: #d4d4d4;">-></span><span style="color: #9cdcfe;">_installMgr</span><span style="color: #d4d4d4;">-></span><span style="color: #dcdcaa;">refreshRemoteSource</span><span style="color: #d4d4d4;">(</span><span style="color: #9cdcfe;">source</span><span style="color: #d4d4d4;">);</span></div><div><span style="color: #d4d4d4;">    </span><span style="color: #c586c0;">if</span><span style="color: #d4d4d4;"> (</span><span style="color: #9cdcfe;">result</span><span style="color: #d4d4d4;"> != </span><span style="color: #b5cea8;">0</span><span style="color: #d4d4d4;">) {</span></div><div><span style="color: #d4d4d4;">        </span><span style="color: #9cdcfe;">cerr</span><span style="color: #d4d4d4;"> </span><span style="color: #dcdcaa;"><<</span><span style="color: #d4d4d4;"> </span><span style="color: #ce9178;">"Failed to refresh source "</span><span style="color: #d4d4d4;"> </span><span style="color: #dcdcaa;"><<</span><span style="color: #d4d4d4;"> </span><span style="color: #9cdcfe;">remoteSourceName</span><span style="color: #d4d4d4;"> </span><span style="color: #dcdcaa;"><<</span><span style="color: #d4d4d4;"> </span><span style="color: #dcdcaa;">endl</span><span style="color: #d4d4d4;"> </span><span style="color: #dcdcaa;"><<</span><span style="color: #d4d4d4;"> </span><span style="color: #dcdcaa;">flush</span><span style="color: #d4d4d4;">;</span></div><div><span style="color: #d4d4d4;">    }</span></div>
<div><span style="color: #d4d4d4;">    </span><span style="color: #9cdcfe;">remoteSourceUpdateMutex</span><span style="color: #d4d4d4;">.</span><span style="color: #dcdcaa;">lock</span><span style="color: #d4d4d4;">();</span></div><div><span style="color: #d4d4d4;">    </span><span style="color: #569cd6;">this</span><span style="color: #d4d4d4;">-></span><span style="color: #9cdcfe;">_remoteSourceUpdateCount</span><span style="color: #d4d4d4;">++;</span></div><div><span style="color: #d4d4d4;">    </span><span style="color: #569cd6;">unsigned</span><span style="color: #d4d4d4;"> </span><span style="color: #569cd6;">int</span><span style="color: #d4d4d4;"> </span><span style="color: #9cdcfe;">totalPercent</span><span style="color: #d4d4d4;"> = (</span><span style="color: #569cd6;">unsigned</span><span style="color: #d4d4d4;"> </span><span style="color: #569cd6;">int</span><span style="color: #d4d4d4;">)</span><span style="color: #dcdcaa;">calculateIntPercentage</span><span style="color: #d4d4d4;"><</span><span style="color: #569cd6;">double</span><span style="color: #d4d4d4;">>(</span><span style="color: #569cd6;">this</span><span style="color: #d4d4d4;">-></span><span style="color: #9cdcfe;">_remoteSourceUpdateCount</span><span style="color: #d4d4d4;">,</span></div><div><span style="color: #d4d4d4;">                                                                     </span><span style="color: #569cd6;">this</span><span style="color: #d4d4d4;">-></span><span style="color: #9cdcfe;">_remoteSourceCount</span><span style="color: #d4d4d4;">);</span></div><div><span style="color: #d4d4d4;">    </span></div><div><span style="color: #d4d4d4;">    </span><span style="color: #c586c0;">if</span><span style="color: #d4d4d4;"> (</span><span style="color: #9cdcfe;">progressCallback</span><span style="color: #d4d4d4;"> != </span><span style="color: #b5cea8;">0</span><span style="color: #d4d4d4;">) {</span></div><div><span style="color: #d4d4d4;">        (*</span><span style="color: #9cdcfe;">progressCallback</span><span style="color: #d4d4d4;">)</span><span style="color: #dcdcaa;">(</span><span style="color: #9cdcfe;">totalPercent</span><span style="color: #dcdcaa;">)</span><span style="color: #d4d4d4;">;</span></div><div><span style="color: #d4d4d4;">    }</span></div><div><span style="color: #d4d4d4;">    </span><span style="color: #9cdcfe;">remoteSourceUpdateMutex</span><span style="color: #d4d4d4;">.</span><span style="color: #dcdcaa;">unlock</span><span style="color: #d4d4d4;">();</span></div>
<div><span style="color: #d4d4d4;">    </span><span style="color: #c586c0;">return</span><span style="color: #d4d4d4;"> </span><span style="color: #9cdcfe;">result</span><span style="color: #d4d4d4;">;</span></div><div><span style="color: #d4d4d4;">}</span></div></div>
      <p>Best regards,<br>
        Tobias<br>
      </p>
      <div class="moz-cite-prefix">On 10/12/20 9:01 PM, Troy A.
        Griffitts wrote:<br>
      </div>
      <blockquote type="cite"
        cite="mid:36F83DB3-F6C4-4D15-9146-40A6C5B762A0@crosswire.org">
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        Any luck getting a stack trace on crash?<br>
        <br>
        Regarding the "multitheaded mode", I'd have to get a bit more
        information as to exactly how you are sharing SWORD objects
        across your threads. Generally, as a rule, you shouldn't. We
        recommend a separate instance of SWMgr per thread and that
        probably goes for InstallMgr, as well.<br>
        <br>
        Troy<br>
        <br>
        <div class="gmail_quote">On October 12, 2020 8:29:31 PM
          GMT+02:00, Tobias Klein <a class="moz-txt-link-rfc2396E"
            href="mailto:contact@tklein.info" moz-do-not-send="true"><contact@tklein.info></a>
          wrote:
          <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
            0.8ex; border-left: 1px solid rgb(204, 204, 204);
            padding-left: 1ex;">
            <p>Hi Troy,</p>
            <p>I'm using curl on all three platforms.</p>
            <p>Regarding the timeout configuration I have not changed
              anything yet, to make this configurable in Ezra Project is
              still on my todo list.</p>
            <p>I just checked on Linux.<br>
              With the old version (May 18th 2020) no hanging or crash
              in 10 out of 10 times.<br>
              WIth the new version (latest trunk / SWORD 1.9 RC3) I get
              1 x crash, 2 x hanging, 7 x working.</p>
            <p>I'm running the InstallMgr::refreshRemoteSource "in a
              multi-threaded mode".<br>
            </p>
            <p>Best regards,<br>
              Tobias<br>
            </p>
            <div class="moz-cite-prefix">On 10/12/20 6:59 PM, Troy A.
              Griffitts wrote:<br>
            </div>
            <blockquote type="cite"
              cite="mid:E1689B41-6534-4EE4-9267-22BE9F59941E@crosswire.org">
              <meta http-equiv="content-type" content="text/html;
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              Hi Tobias,<br>
              <br>
              What transport library are you building with? ftplib or
              curl?<br>
              <br>
              Have you changed the value of our new timeout from the
              default, I believe we decided on, 10 seconds?<br>
              <br>
              Troy<br>
              <br>
              <div class="gmail_quote">On October 12, 2020 6:46:54 PM
                GMT+02:00, Tobias Klein <a
                  class="moz-txt-link-rfc2396E"
                  href="mailto:contact@tklein.info"
                  moz-do-not-send="true"><contact@tklein.info></a>
                wrote:
                <blockquote class="gmail_quote" style="margin: 0pt 0pt
                  0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204);
                  padding-left: 1ex;">
                  <pre class="k9mail">Hi Troy,

In my latest Ezra Project builds using SWORD trunk I’ve been noticing random „hangs“ and crashes related to "updating remote sources“. I suppose it must be around InstallMgr::refreshRemoteSource.

This was still rock solid when using SWORD trunk from May 18th 2020, but not so any more with the recent SWORD trunk.

Unfortunately I cannot pinpoint this more specifically. I just wanted to first share this observation, because it’s worrying me.

I’ve been noticing this regression both on Windows and macOS. Need to check later whether this also happens on Linux, cannot recall it right now.

Best regards,
Tobias<hr>sword-devel mailing list: <a class="moz-txt-link-abbreviated" href="mailto:sword-devel@crosswire.org" moz-do-not-send="true">sword-devel@crosswire.org</a>
<a href="http://crosswire.org/mailman/listinfo/sword-devel" moz-do-not-send="true">http://crosswire.org/mailman/listinfo/sword-devel</a>
Instructions to unsubscribe/change your settings at above page</pre>
                </blockquote>
              </div>
              <br>
              -- <br>
              Sent from my Android device with K-9 Mail. Please excuse
              my brevity. </blockquote>
          </blockquote>
        </div>
        <br>
        -- <br>
        Sent from my Android device with K-9 Mail. Please excuse my
        brevity. </blockquote>
      <br>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
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