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It is possible XrdSysCondVar::WaitMS() burns all CPU if abstime is invalid. The pthread_cond_timedwait exit with EINVAL in this case.

To reproduce the bug change line https://github.com/xrootd/xrootd/blob/master/src/XrdSys/XrdSysPthread.cc#L141 to:
tval.tv_sec = tnow.tv_sec + sec -1;

You can merge this Pull Request by running

  git pull https://github.com/alja/xrootd waitMS_bugfix

Or view, comment on, or merge it at:

  https://github.com/xrootd/xrootd/pull/111

Commit Summary

• Fix 100% CPU usage in XrdSysCondVar::WaitMS when abstime in pthread_cond_timedwait is invalid.

File Changes

• M src/XrdSys/XrdSysPthread.cc (3)

Patch Links:

• https://github.com/xrootd/xrootd/pull/111.patch
• https://github.com/xrootd/xrootd/pull/111.diff

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