[shim] Missing Initialization on Many Calls

[ppenna]

Description

This PR fixes initialization issues of Demikernel in the POSIX SHIM layer.

Without this modification, initialization would be performed only when epoll_create() is the very first call performed by the application.

[github-actions]

libos = catnip
commit id = b379e65

collapsed_stack	percent_time	cycles_per_call	nanoseconds_per_call
bgc::inetstack::poll_recv;inetstack::poll;inetstack::poll_bg_work::for::receive	88.91	18204.45	8165.59
demikernel::new	61.36	1822074333.10	818072707.64
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::receive	44.47	203.59	91.45
bgc::inetstack::poll_recv	35.13	473.56	213.09
bgc::inetstack::tcp::established::background;tcp::established::background::receiver	28.57	857.67	382.95
bgc::inetstack::tcp::established::background;tcp::established::background::retransmitter	25.86	1099.42	500.14
bgc::inetstack::tcp::established::background;tcp::established::background::sender	19.54	759.36	343.65
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for	9.93	48.52	21.99
bgc::inetstack::tcp::established::background;tcp::established::background::acknowledger	8.41	331.79	150.44
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for;udp::receive	7.08	373.11	162.13
bgc::inetstack::poll_recv;inetstack::poll;inetstack::poll_bg_work::for::for	6.14	1252.27	561.03
bgc::inetstack::tcp::established::background	2.67	3329.99	1503.61
ioc::network::libos::pop	0.54	911.63	413.42
ioc::network::libos::push	0.50	2015.70	920.65
bgc::inetstack::poll_recv;inetstack::poll	0.25	40917.43	18351.89
demikernel::push	0.20	831.74	379.62
ioc::network::libos::pushto	0.10	1331.96	582.09
demikernel::pop	0.06	453.85	203.04
demikernel::sgaalloc	0.05	141.28	64.76
demikernel::pushto	0.04	447.23	194.38
ioc::network::libos::close	0.02	7828.82	3544.18
ioc::network::libos::connect	0.01	14859.97	6754.18
demikernel::sgafree	0.01	67.89	30.61
demikernel::bind	0.00	24062.94	10535.95
bgc::inetstack::tcp::passiveopen::background	0.00	14807.94	6673.86
bgc::passive_listening::poll	0.00	5719.30	2570.52
demikernel::listen	0.00	4645.36	2085.86
demikernel::connect	0.00	3460.82	1545.07
bgc::inetstack::icmp::background	0.00	2860.17	1282.70
bgc::inetstack::arp::background	0.00	2615.34	1170.70
ioc::network::libos::accept	0.00	2470.88	1108.65
demikernel::accept	0.00	1329.79	597.60
demikernel::socket	0.00	1207.47	539.63
demikernel::async_close	0.00	593.42	259.38
demikernel::close	0.00	nan	nan

[github-actions]

libos = catnap
commit id = b379e65

collapsed_stack	percent_time	cycles_per_call	nanoseconds_per_call
demikernel::socket;catnap::linux::transport::socket	97.59	56438.60	25679.15
ioc::network::libos::close;catnap::linux::transport::close	95.84	22746.04	10363.11
demikernel::listen;catnap::linux::transport::listen	92.90	13196.58	5943.84
demikernel::bind;catnap::linux::transport::bind	81.39	25004.12	11259.20
ioc::network::libos::accept	43.25	928431867.45	417791577.22
bgc::catnap::transport::epoll	33.83	2149.56	1022.24
ioc::network::libos::pop	25.29	1727308.50	781865.26
ioc::network::libos::connect	24.87	5131178.28	2404968.12
ioc::network::libos::pushto	23.77	8554.88	3813.37
ioc::network::libos::push	6.90	17757.86	8216.04
ioc::network::libos::pushto;catnap::linux::transport::push	6.40	541.49	241.55
ioc::network::libos::push;catnap::linux::transport::push	4.30	721.31	332.18
ioc::network::libos::connect;catnap::linux::transport::connect	1.87	54127.37	25459.36
ioc::network::libos::pop;catnap::linux::transport::pop	1.73	535.16	242.39
demikernel::pushto	1.29	436.40	194.54
demikernel::new	0.48	1608677.85	733778.50
demikernel::push	0.22	594.82	274.25
demikernel::sgaalloc	0.22	227.46	107.63
demikernel::pop	0.16	751.48	340.04
demikernel::socket	0.10	57801.43	26298.90
ioc::network::libos::close	0.07	23808.30	10848.35
demikernel::sgafree	0.04	78.96	36.33
demikernel::connect	0.01	2170.01	1023.55
demikernel::async_close	0.01	997.94	435.07
demikernel::bind	0.00	30771.48	13853.23
demikernel::listen	0.00	14201.11	6396.00
ioc::network::libos::accept;catnap::linux::transport::accept	0.00	3132.58	1412.36
demikernel::accept	0.00	1733.61	780.03
demikernel::close	0.00	nan	nan

[github-actions]

libos = catpowder
commit id = b379e65

collapsed_stack	percent_time	cycles_per_call	nanoseconds_per_call
bgc::inetstack::poll_recv;inetstack::poll;inetstack::poll_bg_work::for::receive	76.95	7057.17	3232.88
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::receive	76.56	939.93	432.32
bgc::inetstack::poll_recv	61.89	1300.48	599.15
bgc::inetstack::tcp::established::background;tcp::established::background::receiver	32.21	1562.43	701.30
demikernel::new	27.21	87480384.57	40072515.33
bgc::inetstack::tcp::established::background;tcp::established::background::retransmitter	25.57	1196.19	563.14
bgc::inetstack::tcp::established::background;tcp::established::background::sender	19.05	824.84	385.67
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for;udp::receive	13.96	329.35	142.87
bgc::inetstack::tcp::established::background;tcp::established::background::acknowledger	7.94	352.91	165.34
bgc::inetstack::tcp::established::background	7.13	4319.20	1989.71
bgc::inetstack::poll_recv;inetstack::poll;inetstack::poll_bg_work::for::for	5.22	463.50	212.39
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for	4.53	66.40	30.91
ioc::network::libos::pushto	3.70	5045.62	2184.81
ioc::network::libos::push	3.57	6282.13	2965.30
ioc::network::libos::pop	1.03	993.20	464.71
demikernel::push	0.45	836.52	399.34
demikernel::pushto	0.33	466.76	202.12
ioc::network::libos::connect	0.30	25284.36	11851.10
ioc::network::libos::close	0.22	10879.32	4969.00
demikernel::pop	0.17	512.16	233.83
demikernel::sgaalloc	0.16	249.77	122.36
demikernel::sgafree	0.05	99.08	45.79
bgc::inetstack::poll_recv;inetstack::poll	0.04	9094.73	4162.25
bgc::inetstack::tcp::passiveopen::background	0.01	12065.93	5527.84
demikernel::connect	0.01	4375.77	2080.91
demikernel::async_close	0.01	706.57	310.36
demikernel::bind	0.00	9860.88	4485.36
demikernel::listen	0.00	5187.43	2460.53
bgc::passive_listening::poll	0.00	4788.04	2218.35
bgc::inetstack::icmp::background	0.00	2759.32	1258.75
bgc::inetstack::arp::background	0.00	2514.86	1160.12
ioc::network::libos::accept	0.00	2450.19	1138.10
demikernel::socket	0.00	2053.04	929.63
demikernel::accept	0.00	1242.21	569.36
demikernel::close	0.00	nan	nan

[stolet]

Without the above change the shim will hang in a multi-threaded program like memcached, but it should run fine after being addressed.

[github-actions]

libos = catpowder
commit id = 57ef93d

collapsed_stack	percent_time	cycles_per_call	nanoseconds_per_call
bgc::inetstack::poll_recv;inetstack::poll;inetstack::poll_bg_work::for::receive	79.36	8280.40	3650.82
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::receive	76.56	898.55	396.46
bgc::inetstack::poll_recv	61.77	1227.51	541.56
bgc::inetstack::tcp::established::background;tcp::established::background::receiver	32.92	1599.56	691.65
demikernel::new	27.72	95737013.57	42161495.90
bgc::inetstack::tcp::established::background;tcp::established::background::retransmitter	25.50	1117.18	492.18
bgc::inetstack::tcp::established::background;tcp::established::background::sender	18.30	756.89	332.24
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for;udp::receive	11.78	354.06	154.15
bgc::inetstack::tcp::established::background;tcp::established::background::acknowledger	7.72	325.74	143.79
bgc::inetstack::tcp::established::background	6.79	4164.43	1820.00
bgc::inetstack::poll_recv;inetstack::poll;inetstack::poll_bg_work::for::for	4.92	472.30	208.46
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for	4.40	58.91	26.02
ioc::network::libos::pushto	3.82	4881.13	2188.82
ioc::network::libos::push	3.48	6121.27	2751.76
ioc::network::libos::pop	1.09	1005.10	442.38
demikernel::push	0.39	702.82	313.29
demikernel::pushto	0.35	445.95	199.98
ioc::network::libos::connect	0.31	25135.12	11307.04
ioc::network::libos::close	0.18	10542.67	4665.32
demikernel::pop	0.17	498.30	219.54
demikernel::sgaalloc	0.14	202.14	91.32
demikernel::sgafree	0.05	85.56	37.90
bgc::inetstack::poll_recv;inetstack::poll	0.03	10308.83	4545.23
bgc::inetstack::tcp::passiveopen::background	0.01	12113.53	5347.51
demikernel::connect	0.01	5310.03	2415.08
demikernel::async_close	0.01	719.11	305.81
demikernel::bind	0.00	9804.00	4278.11
bgc::passive_listening::poll	0.00	5149.81	2268.38
demikernel::listen	0.00	5060.07	2212.54
bgc::inetstack::icmp::background	0.00	3141.68	1385.55
ioc::network::libos::accept	0.00	3114.33	1380.43
bgc::inetstack::arp::background	0.00	2792.97	1224.89
demikernel::socket	0.00	1581.60	696.91
demikernel::accept	0.00	1573.62	689.77
demikernel::close	0.00	nan	nan

[github-actions]

libos = catnip
commit id = 57ef93d

collapsed_stack	percent_time	cycles_per_call	nanoseconds_per_call
bgc::inetstack::poll_recv;inetstack::poll;inetstack::poll_bg_work::for::receive	88.35	17723.60	7890.78
demikernel::new	61.19	1816533173.82	808165084.79
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::receive	44.50	202.60	90.19
bgc::inetstack::poll_recv	35.25	471.97	210.59
bgc::inetstack::tcp::established::background;tcp::established::background::receiver	28.57	868.41	384.00
bgc::inetstack::tcp::established::background;tcp::established::background::retransmitter	25.67	1089.63	495.08
bgc::inetstack::tcp::established::background;tcp::established::background::sender	19.87	766.07	345.05
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for;udp::receive	11.31	370.95	163.28
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for	10.17	49.78	22.42
bgc::inetstack::tcp::established::background;tcp::established::background::acknowledger	8.41	332.13	150.58
bgc::inetstack::poll_recv;inetstack::poll;inetstack::poll_bg_work::for::for	6.16	1231.83	547.03
bgc::inetstack::tcp::established::background	2.75	3333.40	1498.68
ioc::network::libos::pop	0.53	897.03	406.94
ioc::network::libos::push	0.47	1989.06	906.19
bgc::inetstack::poll_recv;inetstack::poll	0.24	40105.10	17854.12
demikernel::push	0.20	798.66	362.99
ioc::network::libos::pushto	0.06	1248.22	546.07
demikernel::pop	0.06	455.86	203.15
demikernel::sgaalloc	0.04	129.17	59.35
demikernel::pushto	0.03	490.57	214.54
ioc::network::libos::close	0.02	7886.36	3518.65
ioc::network::libos::connect	0.01	15861.09	7189.47
demikernel::sgafree	0.01	70.60	31.63
demikernel::bind	0.00	21883.44	9443.01
bgc::inetstack::tcp::passiveopen::background	0.00	15243.10	6786.70
demikernel::connect	0.00	6145.82	2777.79
bgc::passive_listening::poll	0.00	5751.10	2556.49
demikernel::listen	0.00	5255.14	2319.96
bgc::inetstack::icmp::background	0.00	2889.80	1285.65
bgc::inetstack::arp::background	0.00	2824.96	1253.05
ioc::network::libos::accept	0.00	2605.42	1158.85
demikernel::socket	0.00	1630.12	723.82
demikernel::accept	0.00	1514.00	672.79
demikernel::async_close	0.00	678.65	291.20
demikernel::close	0.00	nan	nan

[github-actions]

libos = catnap
commit id = 57ef93d

collapsed_stack	percent_time	cycles_per_call	nanoseconds_per_call
demikernel::socket;catnap::linux::transport::socket	97.58	53201.97	24157.83
ioc::network::libos::close;catnap::linux::transport::close	95.96	22569.47	10218.03
demikernel::listen;catnap::linux::transport::listen	92.23	12819.29	5837.50
demikernel::bind;catnap::linux::transport::bind	80.52	24134.65	10979.03
ioc::network::libos::accept	42.76	885784207.96	404507378.53
bgc::catnap::transport::epoll	33.91	2416.42	1107.14
ioc::network::libos::connect	25.37	5748527.28	2593344.94
ioc::network::libos::pop	25.04	3972823.88	1767940.17
ioc::network::libos::pushto	23.19	9455.50	4115.60
ioc::network::libos::push	7.20	17648.22	8061.24
ioc::network::libos::pushto;catnap::linux::transport::push	6.38	579.17	251.09
ioc::network::libos::push;catnap::linux::transport::push	4.48	740.09	337.56
ioc::network::libos::pop;catnap::linux::transport::pop	2.07	550.23	248.19
ioc::network::libos::connect;catnap::linux::transport::connect	1.69	53700.64	24215.70
demikernel::pushto	1.22	439.27	190.87
demikernel::new	0.53	1600766.29	726111.78
demikernel::push	0.24	590.38	267.86
demikernel::sgaalloc	0.21	206.09	94.04
demikernel::pop	0.17	718.38	325.85
demikernel::socket	0.08	54490.42	24742.16
ioc::network::libos::close	0.06	23589.76	10679.51
demikernel::sgafree	0.04	76.79	34.68
demikernel::bind	0.01	30135.48	13710.36
demikernel::connect	0.01	2058.98	927.14
demikernel::async_close	0.01	959.84	427.41
demikernel::listen	0.00	13907.32	6331.81
ioc::network::libos::accept;catnap::linux::transport::accept	0.00	2998.28	1357.92
demikernel::accept	0.00	1638.61	744.19
demikernel::close	0.00	nan	nan

[stolet]

LGTM

[github-actions]

libos = catpowder
commit id = fe5307c

collapsed_stack	percent_time	cycles_per_call	nanoseconds_per_call
bgc::inetstack::poll_recv;inetstack::poll;inetstack::poll_bg_work::for::receive	76.89	7251.40	3269.65
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::receive	76.30	891.48	401.00
bgc::inetstack::poll_recv	62.29	1216.89	547.85
bgc::inetstack::tcp::established::background;tcp::established::background::receiver	32.24	1474.05	649.45
demikernel::new	27.61	92720557.00	41417577.96
bgc::inetstack::tcp::established::background;tcp::established::background::retransmitter	25.77	1188.12	542.84
bgc::inetstack::tcp::established::background;tcp::established::background::sender	18.51	788.77	357.21
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for;udp::receive	14.34	358.97	158.34
bgc::inetstack::tcp::established::background;tcp::established::background::acknowledger	7.88	343.51	156.83
bgc::inetstack::tcp::established::background	6.51	4169.36	1874.39
bgc::inetstack::poll_recv;inetstack::poll;inetstack::poll_bg_work::for::for	5.27	472.83	212.32
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for	4.53	59.97	27.16
ioc::network::libos::push	3.45	6177.74	2842.89
ioc::network::libos::pushto	2.75	5032.23	2198.25
ioc::network::libos::pop	1.08	956.11	437.18
ioc::network::libos::connect	0.29	25189.71	11439.58
demikernel::push	0.29	682.87	312.59
demikernel::pushto	0.25	471.46	206.01
ioc::network::libos::close	0.22	10466.44	4688.47
demikernel::pop	0.15	496.30	222.28
demikernel::sgaalloc	0.10	133.94	61.41
demikernel::sgafree	0.05	87.54	39.79
bgc::inetstack::poll_recv;inetstack::poll	0.03	9387.83	4231.31
bgc::inetstack::tcp::passiveopen::background	0.01	12428.38	5621.44
demikernel::connect	0.01	4910.80	2231.52
demikernel::async_close	0.01	735.52	314.41
demikernel::bind	0.00	8924.31	3972.86
demikernel::listen	0.00	5214.86	2345.58
bgc::passive_listening::poll	0.00	4806.13	2174.65
bgc::inetstack::icmp::background	0.00	3115.20	1398.12
ioc::network::libos::accept	0.00	2528.79	1146.01
bgc::inetstack::arp::background	0.00	2431.40	1087.32
demikernel::socket	0.00	1845.78	829.76
demikernel::accept	0.00	1220.82	550.67
demikernel::close	0.00	nan	nan

[github-actions]

libos = catnip
commit id = fe5307c

collapsed_stack	percent_time	cycles_per_call	nanoseconds_per_call
bgc::inetstack::poll_recv;inetstack::poll;inetstack::poll_bg_work::for::receive	88.79	18350.97	8349.22
demikernel::new	61.11	1815016774.05	826099341.20
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::receive	44.83	203.26	92.52
bgc::inetstack::poll_recv	35.47	470.48	214.36
bgc::inetstack::tcp::established::background;tcp::established::background::receiver	27.83	853.39	381.07
bgc::inetstack::tcp::established::background;tcp::established::background::retransmitter	25.93	1086.20	492.97
bgc::inetstack::tcp::established::background;tcp::established::background::sender	19.97	771.50	349.79
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for	9.93	48.57	22.21
bgc::inetstack::poll_recv;inetstack::poll_bg_work::for::for;udp::receive	9.75	377.95	165.43
bgc::inetstack::tcp::established::background;tcp::established::background::acknowledger	8.39	326.10	147.75
bgc::inetstack::poll_recv;inetstack::poll;inetstack::poll_bg_work::for::for	5.89	1211.62	552.06
bgc::inetstack::tcp::established::background	2.65	3323.87	1501.26
ioc::network::libos::pop	0.52	896.92	404.34
ioc::network::libos::push	0.47	1994.22	918.03
bgc::inetstack::poll_recv;inetstack::poll	0.28	41323.80	18806.01
demikernel::push	0.15	672.96	309.78
demikernel::pop	0.06	469.31	209.78
ioc::network::libos::pushto	0.05	1202.28	580.29
demikernel::sgaalloc	0.05	130.91	60.95
ioc::network::libos::close	0.02	7628.28	3498.98
demikernel::pushto	0.02	421.58	204.46
ioc::network::libos::connect	0.01	15246.39	7034.96
demikernel::sgafree	0.01	68.44	31.03
demikernel::bind	0.00	22977.00	10024.04
bgc::inetstack::tcp::passiveopen::background	0.00	15226.13	7043.73
bgc::passive_listening::poll	0.00	5670.61	2599.12
demikernel::listen	0.00	5157.00	2316.97
demikernel::connect	0.00	4186.05	1956.95
bgc::inetstack::icmp::background	0.00	2774.72	1257.09
bgc::inetstack::arp::background	0.00	2649.68	1192.38
ioc::network::libos::accept	0.00	2503.92	1144.38
demikernel::accept	0.00	1420.42	657.46
demikernel::socket	0.00	1376.79	657.02
demikernel::async_close	0.00	671.59	293.12
demikernel::close	0.00	nan	nan

[github-actions]

libos = catnap
commit id = fe5307c

collapsed_stack	percent_time	cycles_per_call	nanoseconds_per_call
demikernel::socket;catnap::linux::transport::socket	97.47	55850.60	25464.32
ioc::network::libos::close;catnap::linux::transport::close	95.68	23149.62	10536.86
demikernel::listen;catnap::linux::transport::listen	92.23	12990.42	5928.97
demikernel::bind;catnap::linux::transport::bind	81.36	25401.48	11554.97
ioc::network::libos::accept	42.96	891531711.59	404389339.48
bgc::catnap::transport::epoll	33.78	2356.17	1086.32
ioc::network::libos::pop	25.29	3838793.34	1681304.13
ioc::network::libos::connect	25.21	4120580.06	1883821.36
ioc::network::libos::pushto	23.04	9696.12	4221.39
ioc::network::libos::push	7.02	17528.88	8081.95
ioc::network::libos::pushto;catnap::linux::transport::push	6.39	589.66	256.64
ioc::network::libos::push;catnap::linux::transport::push	4.30	715.54	329.46
ioc::network::libos::pop;catnap::linux::transport::pop	2.53	542.12	246.28
ioc::network::libos::connect;catnap::linux::transport::connect	2.19	54103.94	24960.59
demikernel::pushto	1.25	501.76	218.38
demikernel::new	0.57	1626342.40	740646.69
demikernel::sgaalloc	0.23	271.52	124.86
demikernel::push	0.17	510.61	234.76
demikernel::pop	0.12	561.92	253.81
demikernel::socket	0.11	57281.03	26114.79
ioc::network::libos::close	0.08	24264.41	11044.26
demikernel::sgafree	0.04	78.66	35.69
demikernel::async_close	0.02	837.00	361.36
demikernel::bind	0.01	31325.88	14248.13
demikernel::connect	0.01	2254.10	1044.66
demikernel::listen	0.00	14091.00	6425.83
ioc::network::libos::accept;catnap::linux::transport::accept	0.00	2931.77	1339.91
demikernel::accept	0.00	1760.52	792.67
demikernel::close	0.00	nan	nan