Check atomics support

[saubhik]

Check if std::atomic works fine using Shenango threads. It does work fine.

saubhik@node-0:/proj/quic-server-PG0/users/saubhik/caladan/apps/test$ ./test ../../server.config 100
CPU 11| <5> cpu: detected 20 cores, 1 nodes
CPU 11| <5> time: detected 2394 ticks / us
[  0.000646] CPU 11| <5> loading configuration from '../../server.config'
[  0.001075] CPU 11| <5> cfg: provisioned 4 cores (4 guaranteed, 0 burstable, 0 spinning)
[  0.001087] CPU 11| <5> cfg: task is latency critical (LC)
[  0.001096] CPU 11| <5> cfg: THRESH_QD: 10, THRESH_HT: 0
[  0.001105] CPU 11| <5> cfg: storage disabled, directpath disabled
[  0.001124] CPU 11| <5> process pid: 13084
[  0.030245] CPU 11| <5> net: started network stack
[  0.030258] CPU 11| <5> net: using the following configuration:
[  0.030261] CPU 11| <5>   addr:        192.168.1.3
[  0.030266] CPU 11| <5>   netmask:     255.255.255.0
[  0.030269] CPU 11| <5>   gateway:     192.168.1.1
[  0.030272] CPU 11| <5>   mac:         D2:35:79:2F:2F:3B
[  0.030278] CPU 11| <5>   mtu:         1500
[  0.030390] CPU 11| <5> thread: created thread 0
[  0.030451] CPU 11| <5> spawning 4 kthreads
[  0.030548] CPU 12| <5> thread: created thread 1
[  0.030596] CPU 13| <5> thread: created thread 2
[  0.030663] CPU 15| <5> thread: created thread 3
[  0.045950] CPU 11| <5> thread #0 won!
[  0.285969] CPU 11| <5> test complete
[  0.285975] CPU 11| <5> init: shutting down -> SUCCESS
saubhik@node-0:/proj/quic-server-PG0/users/saubhik/caladan/apps/test$ ./test ../../server.config 100
CPU 01| <5> cpu: detected 20 cores, 1 nodes
CPU 01| <5> time: detected 2394 ticks / us
[  0.000656] CPU 01| <5> loading configuration from '../../server.config'
[  0.001013] CPU 01| <5> cfg: provisioned 4 cores (4 guaranteed, 0 burstable, 0 spinning)
[  0.001025] CPU 01| <5> cfg: task is latency critical (LC)
[  0.001033] CPU 01| <5> cfg: THRESH_QD: 10, THRESH_HT: 0
[  0.001040] CPU 01| <5> cfg: storage disabled, directpath disabled
[  0.001058] CPU 01| <5> process pid: 13108
[  0.030289] CPU 01| <5> net: started network stack
[  0.030302] CPU 01| <5> net: using the following configuration:
[  0.030305] CPU 01| <5>   addr:        192.168.1.3
[  0.030308] CPU 01| <5>   netmask:     255.255.255.0
[  0.030312] CPU 01| <5>   gateway:     192.168.1.1
[  0.030314] CPU 01| <5>   mac:         2A:47:4C:00:38:0E
[  0.030321] CPU 01| <5>   mtu:         1500
[  0.030431] CPU 01| <5> thread: created thread 0
[  0.030492] CPU 01| <5> spawning 4 kthreads
[  0.030621] CPU 12| <5> thread: created thread 1
[  0.030634] CPU 13| <5> thread: created thread 2
[  0.030684] CPU 14| <5> thread: created thread 3
[  0.045864] CPU 11| <5> thread #2 won!
[  0.285884] CPU 11| <5> test complete
[  0.285890] CPU 11| <5> init: shutting down -> SUCCESS

Also, std::memory_order seems to work fine. But cannot say deterministically.