[DO NOT MERGE]: posix shutdown investigation/hacks

[dagar]

• review posix shutdown
• review px4 client/server locking (and cleanup)

What's the relation to unit tests failing with the new px4 work queue? #11261

[julianoes]

I think that's all good.

And the unit tests don't stall anymore for me locally.

[julianoes]

I don't understand the dyn test failure:

      Start 31: dyn
31/34 Test #31: dyn ..............................***Failed  Required regular expression not found.Regex=[1: PASSED
]  0.02 sec
ERROR [dyn] ./examples__dyn_hello.px4mod: cannot open shared object file: No such file or directory
INFO  [px4] Creating symlink /home/julianoes/src/Firmware/ROMFS/px4fmu_test -> /home/julianoes/src/Firmware/build/px4_sitl_test/tmp/etc

______  __   __    ___ 
| ___ \ \ \ / /   /   |
| |_/ /  \ V /   / /| |
|  __/   /   \  / /_| |
| |     / /^\ \ \___  |
\_|     \/   \/     |_/

px4 starting.

57 WARNING: setRealtimeSched failed (not run as root?)
INFO  [px4] Calling startup script: /bin/sh /home/julianoes/src/Firmware/posix-configs/SITL/init/test/test_dyn_hello 0
Shutting down

[dagar]

I don't understand the dyn test failure:

      Start 31: dyn
31/34 Test #31: dyn ..............................***Failed  Required regular expression not found.Regex=[1: PASSED
]  0.02 sec
ERROR [dyn] ./examples__dyn_hello.px4mod: cannot open shared object file: No such file or directory
INFO  [px4] Creating symlink /home/julianoes/src/Firmware/ROMFS/px4fmu_test -> /home/julianoes/src/Firmware/build/px4_sitl_test/tmp/etc

______  __   __    ___ 
| ___ \ \ \ / /   /   |
| |_/ /  \ V /   / /| |
|  __/   /   \  / /_| |
| |     / /^\ \ \___  |
\_|     \/   \/     |_/

px4 starting.

57 WARNING: setRealtimeSched failed (not run as root?)
INFO  [px4] Calling startup script: /bin/sh /home/julianoes/src/Firmware/posix-configs/SITL/init/test/test_dyn_hello 0
Shutting down

The path seems to be wrong now.

[mcsauder]

@dagar , did you want this to be px4_system_reset?

[MaEtUgR]

I did a quick test because I though it might fix #11027 but doesn't but it looks like a start.

[dagar]

I did a quick test because I though it might fix #11027 but doesn't but it looks like a start.

It's intended as a start. There's a lot more to do.