On 6/6/13 5:29 AM, Lionel Cons wrote: > Forwarding an interesting posting from Roland Mainz who did an > investigation why signal trap processing in ksh93, bash and dash is > currently not reliable.
As I said in a previous message, I have done considerable work between bash-4.2 and bash-4.3 to move signal processing out of signal handlers. This includes running trap commands. The only signal for which bash (and other shells) make a guarantee to execute one instance of a trap for each signal received is SICHLD, and even in that case the guarantee is not exact: the shell will run the trap once for each child that exits. Read the thread beginning at http://lists.gnu.org/archive/html/bug-bash/2012-11/msg00003.html for a discussion that kicked off some of the work. Chet -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, ITS, CWRU c...@case.edu http://cnswww.cns.cwru.edu/~chet/
