<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div><br></div><div><br></div><div><span id="zwchr" data-marker="__DIVIDER__">----- On Nov 13, 2017, at 5:44 AM, Yu Yang <yyangplus@gmail.com> wrote:<br></span></div><div data-marker="__QUOTED_TEXT__"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><div dir="ltr"><div>hello</div>I want to implement a multi-tree using lfht in urcu, every node in the tree needs a lfht instance to track the children, I'm not sure if it is safe to use tree like this in multiple threads environments. thanks in advance.</div></blockquote><div>Yes, the RCU lock-free hash table is multi-thread safe.<br></div><div><br data-mce-bogus="1"></div><div>It is also safe to have multiple RCU lfht instances within a given process. An example</div><div>of a program doing that is lttng-tools session daemon.</div><div><br data-mce-bogus="1"></div><div>Best regards,<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>Mathieu<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><br>_______________________________________________<br>lttng-dev mailing list<br>lttng-dev@lists.lttng.org<br>https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev<br></blockquote></div><div><br></div><div data-marker="__SIG_POST__">-- <br></div><div>Mathieu Desnoyers<br>EfficiOS Inc.<br>http://www.efficios.com</div></div></body></html>