Add "sample_with_time" operator by AlexInLog · Pull Request #280 · AlexInLog/ReactivePlusPlus

AlexInLog · 2022-10-11T19:39:25Z

Partly resolves #265

codecov · 2022-10-11T20:53:39Z

Codecov Report

Merging #280 (9f9b3e5) into main (189556d) will increase coverage by 0.10%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #280      +/-   ##
==========================================
+ Coverage   98.59%   98.69%   +0.10%     
==========================================
  Files         100      102       +2     
  Lines        1419     1455      +36     
==========================================
+ Hits         1399     1436      +37     
+ Misses         20       19       -1

Impacted Files	Coverage Δ
src/rpp/rpp/observables/interface_observable.hpp	`100.00% <ø> (ø)`
src/rpp/rpp/operators/delay.hpp	`100.00% <100.00%> (ø)`
src/rpp/rpp/operators/fwd/sample.hpp	`100.00% <100.00%> (ø)`
src/rpp/rpp/operators/sample.hpp	`100.00% <100.00%> (ø)`
src/rpp/rpp/utils/spinlock.hpp	`100.00% <100.00%> (ø)`
src/rpp/rpp/operators/fwd/do.hpp	`100.00% <0.00%> (ø)`
src/rpp/rpp/subscribers/specific_subscriber.hpp	`100.00% <0.00%> (+3.03%)`	⬆️

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github-actions

⚠️ clang-tidy found issue(s) with the introduced code (1/1)

github-actions · 2022-10-11T20:56:11Z

+            {
+                if (i == 30u)
+                {
+                    std::this_thread::yield();


⚠️ clang-diagnostic-error ⚠️
no member named this_thread in namespace std

github-actions · 2022-10-11T20:56:29Z

BENCHMARK RESULTS (AUTOGENERATED)

ci-ubuntu-clang

Observable construction

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observable construction	0.41ns	0.334921	1.21	0.40ns
Dynamic observable construction	35.09ns	29.1563	1.20	29.91ns
Specific observable construction + as_dynamic	34.96ns	29.1713	1.20	29.87ns

Observable lift

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observable lift specific observer	135.39ns	110.646	1.22	362.93ns
Specific observable lift dynamic observer	161.33ns	136.659	1.18	374.01ns
Dynamic observable lift specific observer	222.34ns	183.591	1.21	404.68ns
Dynamic observable lift dynamic observer	229.12ns	193.106	1.19	401.23ns

Observable subscribe

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observable subscribe specific observer	92.83ns	77.3627	1.20	347.42ns
Specific observable subscribe dynamic observer	113.80ns	88.1158	1.29	358.26ns
Dynamic observable subscribe specific observer	177.30ns	145.706	1.22	405.60ns
Dynamic observable subscribe dynamic observer	168.01ns	146.309	1.15	380.89ns

Observable subscribe #2

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observable subscribe lambda	91.76ns	77.226	1.19	347.24ns
Dynamic observable subscribe lambda	170.57ns	139.726	1.22	399.01ns
Specific observable subscribe lambda without subscription	91.76ns	76.6846	1.20	345.78ns
Dynamic observable subscribe lambda without subscription	167.90ns	139.878	1.20	400.58ns
Specific observable subscribe specific subscriber	51.75ns	43.1564	1.20	275.97ns
Dynamic observable subscribe specific subscriber	128.89ns	105.529	1.22	325.10ns
Specific observable subscribe dynamic observer	52.30ns	43.5231	1.20	295.38ns
Dynamic observable subscribe dynamic observer	113.30ns	96.5721	1.17	316.25ns

Observer construction

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observer construction	0.40ns	0.335324	1.20	0.40ns
Dynamic observer construction	35.04ns	29.2113	1.20	25.57ns
Specific observer construction + as_dynamic	35.11ns	32.1472	1.09	25.30ns

OnNext

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observer OnNext	0.80ns	0.670109	1.20	0.80ns
Dynamic observer OnNext	2.01ns	1.67707	1.20	2.81ns

Subscriber construction

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Make subsriber	40.83ns	33.8217	1.21	77.61ns
Make copy of subscriber	20.05ns	16.7365	1.20	5.67ns
Transform subsriber to dynamic	52.65ns	45.8691	1.15	31.43ns

Subscription

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
composite_subscription create	40.63ns	33.8351	1.20	61.52ns
composite_subscription add	59.23ns	49.8789	1.19	112.46ns
composite_subscription unsubscribe	53.04ns	43.3373	1.22	28.17ns

buffer

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
buffer	320.63ns	269.458	1.19	2578.38ns
sending of values from observable via buffer to subscriber	7.75ns	6.39567	1.21	32.82ns

chains creation test

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
long non-state chain creation + subscribe	332.14ns	270.958	1.23	609.73ns
long stateful chain creation + subscribe	477.86ns	399.565	1.20	958.36ns

combine_latest

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
combine_latest construction from observable via dot + subscribe	1066.54ns	900.81	1.18	1063.81ns
sending of values from observable via combine_latest to subscriber	32.99ns	27.5941	1.20	4.07ns

concat

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
concat	2260.46ns	1890.77	1.20	3604.63ns
concat_with	2632.45ns	2220.38	1.19	4005.26ns

distinct_until_changed

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
distinct_until_changed construction from observable via dot + subscribe	153.09ns	129.04	1.19	305.58ns
sending of values from observable via distinct_until_changed to subscriber	2.81ns	2.6825	1.05	1.61ns

first

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
first construction from observable via dot + subscribe	172.16ns	143.026	1.20	696.10ns
sending of values from observable via first to subscriber	0.81ns	0.671155	1.20	0.81ns

foundamental sources

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
empty	100.97ns	84.8463	1.19	748.05ns
error	160.73ns	135.854	1.18	888.08ns
never	56.47ns	46.8708	1.20	305.61ns

from

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
from vector with int	118.85ns	100.896	1.18	793.22ns

immediate scheduler

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
no any re-schedule	1.61ns	0.671499	2.39	134.85ns
re-schedule 10 times	13.86ns	6.85085	2.02	172.28ns

just

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
just send int	103.06ns	87.7848	1.17	770.53ns
just send variadic	140.31ns	115.935	1.21	888.73ns

last

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
last construction from observable via dot + subscribe	224.62ns	186.015	1.21	431.64ns
sending of values from observable via last to subscriber	3.07ns	2.38304	1.29	2.01ns

map

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
map construction from observable via dot + subscribe	106.88ns	89.0219	1.20	291.76ns
sending of values from observable via map to subscriber	1.21ns	1.00512	1.20	2.82ns

merge

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
merge	2208.43ns	1859.9	1.19	3609.73ns
merge_with	2569.16ns	2190.53	1.17	3851.03ns

observe_on

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
observe_on construction from observable via dot + subscribe	547.24ns	555.964	0.98	3010.56ns
sending of values from observable via observe_on to subscriber	77.53ns	89.9299	0.86	233.24ns

publish_subject callbacks

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
on_next	28.95ns	24.1116	1.20	13.45ns
on_error	0.81ns	0.67385	1.20	23.08ns
on_completed	0.81ns	0.67329	1.20	0.81ns

publish_subject routines

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
construct	233.43ns	196.602	1.19	226.10ns
get_observable	31.75ns	29.1172	1.09	60.46ns
get_subscriber	72.69ns	60.5412	1.20	16.66ns

repeat

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
repeat construction from observable via dot + subscribe	4719.16ns	3966.93	1.19	3208.36ns

scan

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
scan construction from observable via dot + subscribe	153.56ns	125.401	1.22	360.29ns
sending of values from observable via scan to subscriber	2.41ns	2.21532	1.09	2.81ns

single-threaded locks

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
no-lock increment	2.42ns	2.02084	1.20	.
mutex lock increment	21.72ns	18.083	1.20	.
spin-lock increment	10.85ns	9.02793	1.20	.

skip

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
skip construction from observable via dot + subscribe	151.46ns	118.429	1.28	554.79ns
sending of values from observable via skip to subscriber	2.81ns	2.00736	1.40	2.41ns

switch_on_next

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
switch_on_next construction from observable via dot + subscribe	2665.02ns	2224.33	1.20	3292.47ns
sending of values from observable via switch_on_next to subscriber	678.53ns	568.818	1.19	762.35ns

take

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
take construction from observable via dot + subscribe	222.40ns	186.177	1.19	597.00ns
sending of values from observable via take to subscriber	2.82ns	2.34854	1.20	3.20ns

take_last

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
take_last construction from observable via dot + subscribe	272.53ns	230.401	1.18	635.67ns
sending of values from observable via take_last to subscriber	4.43ns	2.91072	1.52	4.21ns

take_until

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
take_until construction from observable via dot + subscribe	1260.77ns	1056.46	1.19	1394.51ns
sending of values from observable via take_until to subscriber	10.85ns	9.03398	1.20	2.14ns

trampoline scheduler

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
no any re-schedule	15.88ns	11.7398	1.35	190.80ns
re-schedule 10 times	41.48ns	30.7688	1.35	230.29ns
recursively schedule 10 times	1690.79ns	1388.93	1.22	6706.22ns

window

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
window	2428.35ns	2024.02	1.20	4024.33ns
sending of values from observable via window to subscriber	657.31ns	547.043	1.20	445.04ns

with_latest_from

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
with_latest_from construction from observable via dot + subscribe	1250.65ns	1041.47	1.20	1273.76ns
sending of values from observable via with_latest_from to subscriber	32.08ns	26.3982	1.22	4.36ns

ci-ubuntu-gcc

Observable construction

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observable construction	0.34ns	0.335034	1.01	0.40ns
Dynamic observable construction	29.95ns	31.636	0.95	27.38ns
Specific observable construction + as_dynamic	29.86ns	31.7026	0.94	30.32ns

Observable lift

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observable lift specific observer	138.89ns	119.105	1.17	430.03ns
Specific observable lift dynamic observer	172.07ns	145.419	1.18	432.54ns
Dynamic observable lift specific observer	240.50ns	198.579	1.21	482.82ns
Dynamic observable lift dynamic observer	256.38ns	207.968	1.23	466.32ns

Observable subscribe

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observable subscribe specific observer	100.42ns	82.8207	1.21	413.83ns
Specific observable subscribe dynamic observer	111.78ns	95.2686	1.17	404.79ns
Dynamic observable subscribe specific observer	175.28ns	150.017	1.17	454.57ns
Dynamic observable subscribe dynamic observer	173.74ns	146.119	1.19	457.41ns

Observable subscribe #2

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observable subscribe lambda	99.53ns	83.3529	1.19	392.15ns
Dynamic observable subscribe lambda	190.26ns	151.264	1.26	458.57ns
Specific observable subscribe lambda without subscription	93.78ns	83.4772	1.12	408.42ns
Dynamic observable subscribe lambda without subscription	178.07ns	151.027	1.18	458.98ns
Specific observable subscribe specific subscriber	65.59ns	50.275	1.30	385.40ns
Dynamic observable subscribe specific subscriber	135.07ns	118.353	1.14	388.83ns
Specific observable subscribe dynamic observer	53.87ns	50.2178	1.07	348.24ns
Dynamic observable subscribe dynamic observer	102.23ns	102.295	1.00	415.60ns

Observer construction

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observer construction	0.40ns	0.335394	1.19	0.39ns
Dynamic observer construction	34.11ns	31.4404	1.08	22.57ns
Specific observer construction + as_dynamic	34.04ns	31.4988	1.08	24.28ns

OnNext

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observer OnNext	0.43ns	0.334704	1.29	0.40ns
Dynamic observer OnNext	2.11ns	1.67337	1.26	2.35ns

Subscriber construction

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Make subsriber	35.57ns	34.7182	1.02	85.12ns
Make copy of subscriber	20.45ns	16.7153	1.22	5.54ns
Transform subsriber to dynamic	41.04ns	45.1039	0.91	27.52ns

Subscription

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
composite_subscription create	41.50ns	36.8832	1.13	70.75ns
composite_subscription add	56.95ns	47.4435	1.20	97.16ns
composite_subscription unsubscribe	52.46ns	41.5898	1.26	22.00ns

buffer

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
buffer	308.86ns	264.977	1.17	2378.41ns
sending of values from observable via buffer to subscriber	7.98ns	7.40594	1.08	35.76ns

chains creation test

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
long non-state chain creation + subscribe	408.30ns	301.772	1.35	846.47ns
long stateful chain creation + subscribe	646.43ns	433.383	1.49	1349.55ns

combine_latest

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
combine_latest construction from observable via dot + subscribe	965.77ns	950.941	1.02	1360.26ns
sending of values from observable via combine_latest to subscriber	27.10ns	27.4717	0.99	1.89ns

concat

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
concat	2349.94ns	1943.77	1.21	4547.02ns
concat_with	2833.44ns	2292.02	1.24	4905.31ns

distinct_until_changed

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
distinct_until_changed construction from observable via dot + subscribe	129.25ns	137.648	0.94	453.69ns
sending of values from observable via distinct_until_changed to subscriber	3.71ns	3.88076	0.96	1.35ns

first

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
first construction from observable via dot + subscribe	191.50ns	161.953	1.18	940.90ns
sending of values from observable via first to subscriber	0.83ns	1.33973	0.62	0.58ns

foundamental sources

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
empty	104.12ns	94.3631	1.10	798.11ns
error	162.93ns	136.101	1.20	1192.41ns
never	61.63ns	49.503	1.25	350.35ns

from

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
from vector with int	131.47ns	105.99	1.24	951.43ns

immediate scheduler

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
no any re-schedule	1.13ns	1.76168	0.64	166.21ns
re-schedule 10 times	22.15ns	22.8406	0.97	231.09ns

just

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
just send int	110.64ns	91.6615	1.21	970.12ns
just send variadic	159.79ns	128.057	1.25	1040.01ns

last

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
last construction from observable via dot + subscribe	242.00ns	196.281	1.23	542.46ns
sending of values from observable via last to subscriber	3.15ns	2.09461	1.50	1.57ns

map

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
map construction from observable via dot + subscribe	129.32ns	100.95	1.28	430.96ns
sending of values from observable via map to subscriber	1.05ns	1.34029	0.78	2.38ns

merge

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
merge	2297.44ns	1893.27	1.21	4632.77ns
merge_with	2746.01ns	2258.24	1.22	5116.31ns

observe_on

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
observe_on construction from observable via dot + subscribe	581.78ns	581.224	1.00	3365.02ns
sending of values from observable via observe_on to subscriber	75.60ns	87.6181	0.86	297.03ns

publish_subject callbacks

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
on_next	29.42ns	22.5865	1.30	12.09ns
on_error	0.80ns	0.673725	1.19	20.48ns
on_completed	0.79ns	1.34669	0.58	0.78ns

publish_subject routines

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
construct	246.50ns	208.48	1.18	214.45ns
get_observable	35.54ns	29.4658	1.21	53.04ns
get_subscriber	70.05ns	57.8157	1.21	27.40ns

repeat

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
repeat construction from observable via dot + subscribe	4996.60ns	4152.29	1.20	3871.80ns

scan

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
scan construction from observable via dot + subscribe	154.11ns	137.336	1.12	464.76ns
sending of values from observable via scan to subscriber	3.16ns	3.01519	1.05	1.86ns

single-threaded locks

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
no-lock increment	2.70ns	2.00521	1.34	.
mutex lock increment	22.08ns	18.059	1.22	.
spin-lock increment	13.87ns	9.0274	1.54	.

skip

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
skip construction from observable via dot + subscribe	192.46ns	134.244	1.43	652.66ns
sending of values from observable via skip to subscriber	3.69ns	4.10296	0.90	2.35ns

switch_on_next

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
switch_on_next construction from observable via dot + subscribe	2869.60ns	2385.44	1.20	5321.36ns
sending of values from observable via switch_on_next to subscriber	678.45ns	599.786	1.13	1427.93ns

take

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
take construction from observable via dot + subscribe	232.73ns	191.293	1.22	756.23ns
sending of values from observable via take to subscriber	5.32ns	4.2377	1.26	3.56ns

take_last

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
take_last construction from observable via dot + subscribe	329.22ns	232.598	1.42	816.39ns
sending of values from observable via take_last to subscriber	3.74ns	3.73069	1.00	7.15ns

take_until

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
take_until construction from observable via dot + subscribe	1443.34ns	1082.23	1.33	1954.45ns
sending of values from observable via take_until to subscriber	11.64ns	8.70725	1.34	2.14ns

trampoline scheduler

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
no any re-schedule	26.53ns	21.2879	1.25	211.51ns
re-schedule 10 times	52.64ns	50.0575	1.05	272.80ns
recursively schedule 10 times	1803.23ns	1448.35	1.25	8244.24ns

window

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
window	2713.94ns	2167.52	1.25	4126.35ns
sending of values from observable via window to subscriber	710.42ns	599.466	1.19	552.17ns

with_latest_from

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
with_latest_from construction from observable via dot + subscribe	1147.39ns	1129.72	1.02	1703.07ns
sending of values from observable via with_latest_from to subscriber	36.04ns	25.4576	1.42	4.28ns

ci-windows

Observable construction

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observable construction	2.01ns	1.32816	1.51	0.80ns
Dynamic observable construction	71.94ns	73.4562	0.98	117.36ns
Specific observable construction + as_dynamic	72.16ns	71.6573	1.01	117.35ns

Observable lift

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observable lift specific observer	161.19ns	154.033	1.05	1184.73ns
Specific observable lift dynamic observer	191.15ns	203.597	0.94	1231.71ns
Dynamic observable lift specific observer	275.13ns	303.312	0.91	1356.58ns
Dynamic observable lift dynamic observer	252.26ns	261.229	0.97	1260.15ns

Observable subscribe

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observable subscribe specific observer	122.83ns	142.76	0.86	1146.91ns
Specific observable subscribe dynamic observer	137.48ns	132.908	1.03	1175.23ns
Dynamic observable subscribe specific observer	230.65ns	262.265	0.88	1317.45ns
Dynamic observable subscribe dynamic observer	189.44ns	203.202	0.93	1227.52ns

Observable subscribe #2

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observable subscribe lambda	120.90ns	123.017	0.98	1145.77ns
Dynamic observable subscribe lambda	230.44ns	258.774	0.89	1316.53ns
Specific observable subscribe lambda without subscription	122.92ns	139.317	0.88	1145.73ns
Dynamic observable subscribe lambda without subscription	226.17ns	228.871	0.99	1315.26ns
Specific observable subscribe specific subscriber	46.78ns	49.4961	0.95	849.55ns
Dynamic observable subscribe specific subscriber	151.26ns	146.271	1.03	1021.96ns
Specific observable subscribe dynamic observer	48.47ns	52.1959	0.93	870.29ns
Dynamic observable subscribe dynamic observer	99.19ns	101.048	0.98	906.07ns

Observer construction

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observer construction	2.01ns	1.50432	1.34	2.00ns
Dynamic observer construction	72.71ns	74.2441	0.98	107.09ns
Specific observer construction + as_dynamic	72.88ns	73.8117	0.99	106.33ns

OnNext

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Specific observer OnNext	0.45ns	0.590402	0.76	0.49ns
Dynamic observer OnNext	2.33ns	1.83602	1.27	2.01ns

Subscriber construction

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
Make subsriber	73.09ns	74.976	0.97	322.81ns
Make copy of subscriber	16.08ns	16.7123	0.96	37.38ns
Transform subsriber to dynamic	86.47ns	97.4492	0.89	143.03ns

Subscription

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
composite_subscription create	74.08ns	75.0721	0.99	313.82ns
composite_subscription add	69.35ns	73.5766	0.94	170.02ns
composite_subscription unsubscribe	62.00ns	72.9193	0.85	114.25ns

buffer

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
buffer	359.72ns	332.578	1.08	4331.00ns
sending of values from observable via buffer to subscriber	6.81ns	5.58678	1.22	85.73ns

chains creation test

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
long non-state chain creation + subscribe	314.45ns	249.761	1.26	1688.87ns
long stateful chain creation + subscribe	679.50ns	690.028	0.98	3242.62ns

combine_latest

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
combine_latest construction from observable via dot + subscribe	1569.93ns	1423.69	1.10	3034.75ns
sending of values from observable via combine_latest to subscriber	46.33ns	39.2172	1.18	3.86ns

concat

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
concat	2701.00ns	2658.3	1.02	10685.70ns
concat_with	3465.38ns	3829.88	0.90	11598.30ns

distinct_until_changed

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
distinct_until_changed construction from observable via dot + subscribe	197.94ns	202.368	0.98	1020.40ns
sending of values from observable via distinct_until_changed to subscriber	3.21ns	2.95713	1.09	3.21ns

first

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
first construction from observable via dot + subscribe	156.50ns	148.419	1.05	2649.00ns
sending of values from observable via first to subscriber	2.51ns	2.6991	0.93	1.25ns

foundamental sources

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
empty	82.79ns	83.0847	1.00	2353.45ns
error	147.31ns	139.871	1.05	2492.90ns
never	47.53ns	51.3272	0.93	877.96ns

from

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
from vector with int	140.80ns	157.736	0.89	2419.18ns

immediate scheduler

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
no any re-schedule	1.64ns	1.18231	1.39	406.32ns
re-schedule 10 times	130.39ns	87.1019	1.50	433.38ns

just

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
just send int	86.68ns	78.0431	1.11	2370.45ns
just send variadic	122.55ns	128.679	0.95	2450.90ns

last

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
last construction from observable via dot + subscribe	237.90ns	243.052	0.98	1435.19ns
sending of values from observable via last to subscriber	3.35ns	3.42731	0.98	3.28ns

map

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
map construction from observable via dot + subscribe	111.59ns	104.817	1.06	985.85ns
sending of values from observable via map to subscriber	3.54ns	3.82695	0.92	7.46ns

merge

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
merge	2640.60ns	2627.82	1.00	10970.00ns
merge_with	3361.25ns	3394.75	0.99	11619.00ns

observe_on

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
observe_on construction from observable via dot + subscribe	635.14ns	679.629	0.93	5933.00ns
sending of values from observable via observe_on to subscriber	62.36ns	74.63	0.84	773.79ns

publish_subject callbacks

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
on_next	22.56ns	17.481	1.29	28.32ns
on_error	2.46ns	2.9792	0.83	19.19ns
on_completed	2.96ns	2.37719	1.24	0.81ns

publish_subject routines

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
construct	386.85ns	313.417	1.23	596.84ns
get_observable	31.08ns	25.3574	1.23	154.01ns
get_subscriber	65.22ns	50.1751	1.30	99.34ns

repeat

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
repeat construction from observable via dot + subscribe	5902.60ns	5359.8	1.10	11120.70ns

scan

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
scan construction from observable via dot + subscribe	188.10ns	181.331	1.04	1260.60ns
sending of values from observable via scan to subscriber	5.33ns	5.70211	0.93	8.39ns

single-threaded locks

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
no-lock increment	2.78ns	1.65816	1.68	.
mutex lock increment	26.17ns	22.7186	1.15	.
spin-lock increment	10.45ns	9.03552	1.16	.

skip

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
skip construction from observable via dot + subscribe	193.85ns	171.143	1.13	1555.93ns
sending of values from observable via skip to subscriber	3.21ns	4.05978	0.79	3.33ns

switch_on_next

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
switch_on_next construction from observable via dot + subscribe	3476.57ns	3624.62	0.96	12054.00ns
sending of values from observable via switch_on_next to subscriber	840.63ns	756.031	1.11	3072.78ns

take

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
take construction from observable via dot + subscribe	245.74ns	249.742	0.98	2140.92ns
sending of values from observable via take to subscriber	6.10ns	4.58538	1.33	5.73ns

take_last

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
take_last construction from observable via dot + subscribe	330.14ns	346.653	0.95	2399.00ns
sending of values from observable via take_last to subscriber	4.13ns	4.28645	0.96	20.15ns

take_until

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
take_until construction from observable via dot + subscribe	1652.88ns	1741.88	0.95	5250.00ns
sending of values from observable via take_until to subscriber	12.24ns	11.0946	1.10	5.16ns

trampoline scheduler

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
no any re-schedule	18.18ns	16.7895	1.08	590.69ns
re-schedule 10 times	143.55ns	106.761	1.34	623.23ns
recursively schedule 10 times	2513.50ns	2632.82	0.95	19329.50ns

window

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
window	2955.22ns	2955.6	1.00	9550.67ns
sending of values from observable via window to subscriber	823.67ns	828.906	0.99	1582.31ns

with_latest_from

Table

Test Name	Current, ns	Prev, ns	Ratio	RxCpp current, ns
with_latest_from construction from observable via dot + subscribe	2065.50ns	1794.0	1.15	3765.83ns
sending of values from observable via with_latest_from to subscriber	35.33ns	33.4084	1.06	6.55ns

sonarqubecloud · 2022-10-11T21:11:56Z

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities
0 Security Hotspots
6 Code Smells

0.0% Coverage
0.0% Duplication

thorstink · 2022-10-12T06:16:28Z

Awesome, thanks :-)

AlexInLog · 2022-10-12T06:49:52Z

@thorstink, waiting for the feedback ;-)
BTW, do you still need sample with observable logic?

thorstink · 2022-10-12T14:17:09Z

Ah, I think I am missing something. What feedback? :-) sample_with_time is something I would still like a lot. What I mean is something similar to RxCpp's sample_with_time: https://github.com/ReactiveX/RxCpp/blob/main/Rx/v2/test/operators/sample.cpp Something that rxcpp does not have, but what I think would be nice (I've noticed I wanted it sometimes), is a simple downsample operator. Pass one message, skip three, pass one, skip three etc. Or did you mean something else?

…

On Wed, 12 Oct 2022 at 08:50, Aleksey Loginov ***@***.***> wrote: @thorstink <https://github.com/thorstink>, waiting for the feedback ;-) BTW, do you still need sample with observable logic? — Reply to this email directly, view it on GitHub <#280 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AEDBJ5JPN4N62NGMWYZAMFLWCZNRXANCNFSM6AAAAAARCTL4B4> . You are receiving this because you were mentioned.Message ID: ***@***.***>

AlexInLog · 2022-10-12T15:53:04Z

@thorstink ,

Ah, I think I am missing something. What feedback? :-)

Feedback about usage =) As far as I remember you requested this operator =)

sample_with_time is something I would still like a lot. What I mean is
something similar to RxCpp's sample_with_time:
https://github.com/ReactiveX/RxCpp/blob/main/Rx/v2/test/operators/sample.cpp

Yeah, rpp has same after this PR =)

Something that rxcpp does not have, but what I think would be nice (I've
noticed I wanted it sometimes), is a simple downsample operator. Pass one
message, skip three, pass one, skip three etc.

Does it something like "take N elements each NNth element"?

AlexInLog added 7 commits October 10, 2022 20:39

Sample prototype

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simplify delay

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start tests for sample

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tests + fixes

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Add docs

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status

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fix interval tests

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github-actions Bot reviewed Oct 11, 2022

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Update spinlock.hpp

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AlexInLog merged commit 4c39786 into main Oct 11, 2022

AlexInLog deleted the sample branch October 11, 2022 21:13

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BENCHMARK RESULTS (AUTOGENERATED)

ci-ubuntu-clang

Observable construction

Observable lift

Observable subscribe

Observable subscribe #2

Observer construction

OnNext

Subscriber construction

Subscription

buffer

chains creation test

combine_latest

concat

distinct_until_changed

first

foundamental sources

from

immediate scheduler

just

last

map

merge

observe_on

publish_subject callbacks

publish_subject routines

repeat

scan

single-threaded locks

skip

switch_on_next

take

take_last

take_until

trampoline scheduler

window

with_latest_from

ci-ubuntu-gcc

Observable construction

Observable lift

Observable subscribe

Observable subscribe #2

Observer construction

OnNext

Subscriber construction

Subscription

buffer

chains creation test

combine_latest

concat

distinct_until_changed

first

foundamental sources

from

immediate scheduler

just

last

map

merge

observe_on

publish_subject callbacks

publish_subject routines

repeat

scan

single-threaded locks

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