RFR(M): 8200126: [TESTBUG] Open source VM runtime signal tests

[David Holmes]

Hi Misha,

For the benefit of the broader community these are very old tests 
related to the use of ligjsig, that were recently converted to be jtreg 
tests in preparation for open sourcing them. If there were to be written 
from scratch today I expect they would be in a somewhat different form, 
but the aim here is to open source them, not rewrite them.

Also note that these tests would only fail by crashing (shouldn't 
happen) or "hanging". If the signal is not delivered then the test will 
wait for it until eventually being timed-out by jtreg.
On 28/03/2018 11:52 AM, Mikhailo Seledtsov wrote:
> Please review: open sourcing vm signal tests.
> 
>      JBS: https://bugs.openjdk.java.net/browse/JDK-8200126
>      Webrev: http://cr.openjdk.java.net/~mseledtsov/8200126.00.open/

All of the signal tests should work everywhere except Windows, so I 
think the @requires should just exclude windows. In particular I would 
expect them to also run on AIX.

---

  make/test/JtregNativeHotspot.gmk

I think you need to rebase your changes as the build logic for native 
tests has completely changed recently.

---

test/hotspot/jtreg/TEST.groups

I agree with Christian that we don't need a hotspot_signal group.

I'm also unclear why these tests are left to tier 4(?), though tier 3 
seems fine given we have constraints on what we can jam into tiers 1 and 2.

---

test/hotspot/jtreg/runtime/signal/exesigtest.c

Can you please fix the typo in the name of the "sig_recieved" variable.

Can you confirm that all the printf output actually appears in the jtreg 
test log please.

>      Testing:
>          1. Linux-x64:
>             make run-test TEST=hotspot_signal
>             All tests PASS
>          2. Multi-platform automated testing: Linux-x64, Win-x64, MAC
>             hotspot_signal, hs-tier1, hs-tier2 - in progress

Must be tested on Solaris as well.

Thanks,
David

> Thank you,
> Misha
> 
>