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Re: [RFA] Fix tid-reuse sometimes blocks for a very long (infinite?) time.
- From: Pedro Alves <palves at redhat dot com>
- To: Philippe Waroquiers <philippe dot waroquiers at skynet dot be>, gdb-patches at sourceware dot org
- Date: Tue, 4 Dec 2018 15:23:22 +0000
- Subject: Re: [RFA] Fix tid-reuse sometimes blocks for a very long (infinite?) time.
- References: <20181104200048.2463-1-philippe.waroquiers@skynet.be>
On 11/04/2018 08:00 PM, Philippe Waroquiers wrote:
> A failure that seems to cause a long/infinite time is the following:
>
> For a not clear reason, tid-reuse.c spawner thread sometimes gets an error:
> tid-reuse: /bd/home/philippe/gdb/git/build_moreaa/gdb/testsuite/../../../moreaa/gdb/testsuite/gdb.threads/tid-reuse.c:58: spawner_thread_func: Assertion `rc == 0' failed.
Odd. It'd be interesting to know what was the value of 'rc'.
I suspect it was EAGAIN, but I'm not seeing why you'd get that:
the test spawns each thread and waits for it to die before spawning
a new one. Maybe you were testing in parallel mode, and some other
testcase happens to exhaust the number of threads simultaneously?
I'm thinking of perhaps gdb.threads/attach-many-short-lived-threads.exp,
for example.
Thanks,
Pedro Alves