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API changes, optimizations, features
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Ii64人 2022-03-05 09:46:30 +07:00 • committed by GitHub
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31
README.md
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@ -1,8 +1,8 @@
# gouring
[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)
[![Go Reference](https://pkg.go.dev/badge/github.com/ii64/gouring.svg)](https://pkg.go.dev/github.com/ii64/gouring)
[![License: MIT][1]](LICENSE)
[![Go Reference][2]](https://pkg.go.dev/github.com/ii64/gouring)
Low-level io uring library
@ -75,5 +75,30 @@ if err != nil {
}
```
## Graph
> Check out test script [here][5]
<table><tr>
<td>SQPOLL</td><td>non-SQPOLL</td>
</tr><tr><td>
![graph sqpoll][3]
</td><td>
![graph non sqpoll][4]
</td></tr></table>
### Referece
[github.com/iceber/iouring-go](https://github.com/iceber/iouring-go)
[github.com/iceber/iouring-go](https://github.com/iceber/iouring-go)
[1]: https://img.shields.io/badge/License-MIT-yellow.svg
[2]: https://pkg.go.dev/badge/github.com/ii64/gouring.svg
[3]: assets/sqpoll.svg
[4]: assets/nosqpoll.svg
[5]: https://gist.github.com/ii64/3a4e8f5c689bb65b2fb9c5f2b1a5904d

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assets/nosqpoll.svg Normal file
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<g id="a_edge4"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).SubmitAndWait -> github.com/ii64/gouring.(*Ring).Enter (22.72s)">
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</g>
<g id="a_edge4-label"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).SubmitAndWait -> github.com/ii64/gouring.(*Ring).Enter (22.72s)">
<text text-anchor="middle" x="668" y="-553.3" font-family="Times,serif" font-size="14.00"> 22.72s</text>
</a>
</g>
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<!-- N6 -->
<g id="node6" class="node">
<title>N6</title>
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<text text-anchor="middle" x="341.5" y="-661.1" font-family="Times,serif" font-size="13.00">queue</text>
<text text-anchor="middle" x="341.5" y="-647.1" font-family="Times,serif" font-size="13.00">(*Queue)</text>
<text text-anchor="middle" x="341.5" y="-633.1" font-family="Times,serif" font-size="13.00">_getSQEntry</text>
<text text-anchor="middle" x="341.5" y="-619.1" font-family="Times,serif" font-size="13.00">1.68s (4.91%)</text>
<text text-anchor="middle" x="341.5" y="-605.1" font-family="Times,serif" font-size="13.00">of 3.13s (9.14%)</text>
</a>
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<!-- N7 -->
<g id="node7" class="node">
<title>N7</title>
<g id="a_node7"><a xlink:title="github.com/ii64/gouring.(*SQEntry).Reset (1.45s)">
<polygon fill="#edebe8" stroke="#b2a38c" points="109,-519.5 0,-519.5 0,-455.5 109,-455.5 109,-519.5"></polygon>
<text text-anchor="middle" x="54.5" y="-505.1" font-family="Times,serif" font-size="13.00">gouring</text>
<text text-anchor="middle" x="54.5" y="-491.1" font-family="Times,serif" font-size="13.00">(*SQEntry)</text>
<text text-anchor="middle" x="54.5" y="-477.1" font-family="Times,serif" font-size="13.00">Reset</text>
<text text-anchor="middle" x="54.5" y="-463.1" font-family="Times,serif" font-size="13.00">1.45s (4.23%)</text>
</a>
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</g>
<!-- N6&#45;&gt;N7 -->
<g id="edge13" class="edge">
<title>N6-&gt;N7</title>
<g id="a_edge13"><a xlink:title="github.com/ii64/gouring/queue.(*Queue)._getSQEntry -> github.com/ii64/gouring.(*SQEntry).Reset (1.45s)">
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<g id="a_edge13-label"><a xlink:title="github.com/ii64/gouring/queue.(*Queue)._getSQEntry -> github.com/ii64/gouring.(*SQEntry).Reset (1.45s)">
<text text-anchor="middle" x="130.5" y="-553.3" font-family="Times,serif" font-size="14.00"> 1.45s</text>
</a>
</g>
</g>
<!-- N8&#45;&gt;N6 -->
<g id="edge12" class="edge">
<title>N8-&gt;N6</title>
<g id="a_edge12"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetSQEntry -> github.com/ii64/gouring/queue.(*Queue)._getSQEntry (3.13s)">
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<g id="a_edge12-label"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetSQEntry -> github.com/ii64/gouring/queue.(*Queue)._getSQEntry (3.13s)">
<text text-anchor="middle" x="396.5" y="-704.8" font-family="Times,serif" font-size="14.00"> 3.13s</text>
</a>
</g>
</g>
<!-- N17 -->
<g id="node17" class="node">
<title>N17</title>
<g id="a_node17"><a xlink:title="github.com/ii64/gouring.enter (22.69s)">
<polygon fill="#edd8d5" stroke="#b21400" points="691.5,-400 591.5,-400 591.5,-364 691.5,-364 691.5,-400"></polygon>
<text text-anchor="middle" x="641.5" y="-389.1" font-family="Times,serif" font-size="8.00">gouring</text>
<text text-anchor="middle" x="641.5" y="-380.1" font-family="Times,serif" font-size="8.00">enter</text>
<text text-anchor="middle" x="641.5" y="-371.1" font-family="Times,serif" font-size="8.00">0 of 22.69s (66.25%)</text>
</a>
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</g>
<!-- N13&#45;&gt;N17 -->
<g id="edge5" class="edge">
<title>N13-&gt;N17</title>
<g id="a_edge5"><a xlink:title="github.com/ii64/gouring.(*Ring).Enter -> github.com/ii64/gouring.enter (22.69s)">
<path fill="none" stroke="#b21400" stroke-width="4" d="M641.5,-458.49C641.5,-443.46 641.5,-425.02 641.5,-410.13"></path>
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<text text-anchor="middle" x="668" y="-421.8" font-family="Times,serif" font-size="14.00"> 22.69s</text>
</a>
</g>
</g>
<!-- N14&#45;&gt;N4 -->
<g id="edge10" class="edge">
<title>N14-&gt;N4</title>
<g id="a_edge10"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetCQEntry -> github.com/ii64/gouring/queue.(*Queue).GetCQEntryWait (5.60s)">
<path fill="none" stroke="#b25d20" d="M516.29,-738.9C513.82,-725.54 510.76,-709.07 507.84,-693.32"></path>
<polygon fill="#b25d20" stroke="#b25d20" points="511.22,-692.3 505.95,-683.11 504.33,-693.58 511.22,-692.3"></polygon>
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<g id="a_edge10-label"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetCQEntry -> github.com/ii64/gouring/queue.(*Queue).GetCQEntryWait (5.60s)">
<text text-anchor="middle" x="534.5" y="-704.8" font-family="Times,serif" font-size="14.00"> 5.60s</text>
</a>
</g>
</g>
<!-- N15&#45;&gt;N5 -->
<g id="edge3" class="edge">
<title>N15-&gt;N5</title>
<g id="a_edge3"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).Submit -> github.com/ii64/gouring/queue.(*Queue).SubmitAndWait (23.79s)">
<path fill="none" stroke="#b21200" stroke-width="4" d="M641.5,-738.9C641.5,-718.28 641.5,-690.27 641.5,-668.91"></path>
<polygon fill="#b21200" stroke="#b21200" stroke-width="4" points="645,-668.73 641.5,-658.73 638,-668.73 645,-668.73"></polygon>
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</g>
<g id="a_edge3-label"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).Submit -> github.com/ii64/gouring/queue.(*Queue).SubmitAndWait (23.79s)">
<text text-anchor="middle" x="668" y="-704.8" font-family="Times,serif" font-size="14.00"> 23.79s</text>
</a>
</g>
</g>
<!-- N16 -->
<g id="node16" class="node">
<title>N16</title>
<g id="a_node16"><a xlink:title="github.com/ii64/gouring.io_uring_enter2 (22.69s)">
<polygon fill="#edd8d5" stroke="#b21400" points="694,-211 589,-211 589,-163 694,-163 694,-211"></polygon>
<text text-anchor="middle" x="641.5" y="-199.8" font-family="Times,serif" font-size="9.00">gouring</text>
<text text-anchor="middle" x="641.5" y="-189.8" font-family="Times,serif" font-size="9.00">io_uring_enter2</text>
<text text-anchor="middle" x="641.5" y="-179.8" font-family="Times,serif" font-size="9.00">0.01s (0.029%)</text>
<text text-anchor="middle" x="641.5" y="-169.8" font-family="Times,serif" font-size="9.00">of 22.69s (66.25%)</text>
</a>
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</g>
<!-- N16&#45;&gt;N2 -->
<g id="edge8" class="edge">
<title>N16-&gt;N2</title>
<g id="a_edge8"><a xlink:title="github.com/ii64/gouring.io_uring_enter2 -> syscall.Syscall6 (22.68s)">
<path fill="none" stroke="#b21400" stroke-width="4" d="M641.5,-162.94C641.5,-151.4 641.5,-136.79 641.5,-122.13"></path>
<polygon fill="#b21400" stroke="#b21400" stroke-width="4" points="645,-122.02 641.5,-112.02 638,-122.02 645,-122.02"></polygon>
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<g id="a_edge8-label"><a xlink:title="github.com/ii64/gouring.io_uring_enter2 -> syscall.Syscall6 (22.68s)">
<text text-anchor="middle" x="668" y="-133.8" font-family="Times,serif" font-size="14.00"> 22.68s</text>
</a>
</g>
</g>
<!-- N18 -->
<g id="node18" class="node">
<title>N18</title>
<g id="a_node18"><a xlink:title="github.com/ii64/gouring.io_uring_enter (22.69s)">
<polygon fill="#edd8d5" stroke="#b21400" points="691.5,-298 591.5,-298 591.5,-262 691.5,-262 691.5,-298"></polygon>
<text text-anchor="middle" x="641.5" y="-287.1" font-family="Times,serif" font-size="8.00">gouring</text>
<text text-anchor="middle" x="641.5" y="-278.1" font-family="Times,serif" font-size="8.00">io_uring_enter</text>
<text text-anchor="middle" x="641.5" y="-269.1" font-family="Times,serif" font-size="8.00">0 of 22.69s (66.25%)</text>
</a>
</g>
</g>
<!-- N17&#45;&gt;N18 -->
<g id="edge6" class="edge">
<title>N17-&gt;N18</title>
<g id="a_edge6"><a xlink:title="github.com/ii64/gouring.enter -> github.com/ii64/gouring.io_uring_enter (22.69s)">
<path fill="none" stroke="#b21400" stroke-width="4" d="M641.5,-363.58C641.5,-348.38 641.5,-326.07 641.5,-308.46"></path>
<polygon fill="#b21400" stroke="#b21400" stroke-width="4" points="645,-308.22 641.5,-298.22 638,-308.22 645,-308.22"></polygon>
</a>
</g>
<g id="a_edge6-label"><a xlink:title="github.com/ii64/gouring.enter -> github.com/ii64/gouring.io_uring_enter (22.69s)">
<text text-anchor="middle" x="669" y="-334.8" font-family="Times,serif" font-size="14.00"> 22.69s</text>
<text text-anchor="middle" x="669" y="-319.8" font-family="Times,serif" font-size="14.00"> (inline)</text>
</a>
</g>
</g>
<!-- N18&#45;&gt;N16 -->
<g id="edge7" class="edge">
<title>N18-&gt;N16</title>
<g id="a_edge7"><a xlink:title="github.com/ii64/gouring.io_uring_enter -> github.com/ii64/gouring.io_uring_enter2 (22.69s)">
<path fill="none" stroke="#b21400" stroke-width="4" d="M641.5,-261.88C641.5,-250.48 641.5,-235.11 641.5,-221.34"></path>
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</g>
<g id="a_edge7-label"><a xlink:title="github.com/ii64/gouring.io_uring_enter -> github.com/ii64/gouring.io_uring_enter2 (22.69s)">
<text text-anchor="middle" x="668" y="-232.8" font-family="Times,serif" font-size="14.00"> 22.69s</text>
</a>
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</g>
</g>
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<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 1229)">
<title>prf</title>
<polygon fill="white" stroke="transparent" points="-4,4 -4,-1229 1724,-1229 1724,4 -4,4"></polygon>
<!-- N1 -->
<g id="node1" class="node">
<title>N1</title>
<g id="a_node1"><a xlink:title="main.main (18.94s)">
<polygon fill="#eddad5" stroke="#b22600" points="274.5,-1106 68.5,-1106 68.5,-1010 274.5,-1010 274.5,-1106"></polygon>
<text text-anchor="middle" x="171.5" y="-1086" font-family="Times,serif" font-size="20.00">main</text>
<text text-anchor="middle" x="171.5" y="-1064" font-family="Times,serif" font-size="20.00">main</text>
<text text-anchor="middle" x="171.5" y="-1042" font-family="Times,serif" font-size="20.00">2.21s (5.24%)</text>
<text text-anchor="middle" x="171.5" y="-1020" font-family="Times,serif" font-size="20.00">of 18.94s (44.88%)</text>
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<!-- N8 -->
<g id="node8" class="node">
<title>N8</title>
<g id="a_node8"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetSQEntry (8.68s)">
<polygon fill="#edded5" stroke="#b24300" points="285,-944 58,-944 58,-806 285,-806 285,-944"></polygon>
<text text-anchor="middle" x="171.5" y="-920.8" font-family="Times,serif" font-size="24.00">queue</text>
<text text-anchor="middle" x="171.5" y="-894.8" font-family="Times,serif" font-size="24.00">(*Queue)</text>
<text text-anchor="middle" x="171.5" y="-868.8" font-family="Times,serif" font-size="24.00">GetSQEntry</text>
<text text-anchor="middle" x="171.5" y="-842.8" font-family="Times,serif" font-size="24.00">4.12s (9.76%)</text>
<text text-anchor="middle" x="171.5" y="-816.8" font-family="Times,serif" font-size="24.00">of 8.68s (20.57%)</text>
</a>
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</g>
<!-- N1&#45;&gt;N8 -->
<g id="edge5" class="edge">
<title>N1-&gt;N8</title>
<g id="a_edge5"><a xlink:title="main.main -> github.com/ii64/gouring/queue.(*Queue).GetSQEntry (8.68s)">
<path fill="none" stroke="#b24300" stroke-width="2" d="M171.5,-1009.92C171.5,-992.96 171.5,-973.33 171.5,-954.43"></path>
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<g id="a_edge5-label"><a xlink:title="main.main -> github.com/ii64/gouring/queue.(*Queue).GetSQEntry (8.68s)">
<text text-anchor="middle" x="193.5" y="-973.3" font-family="Times,serif" font-size="14.00"> 8.68s</text>
</a>
</g>
</g>
<!-- N30 -->
<g id="node30" class="node">
<title>N30</title>
<g id="a_node30"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetCQEntry (6s)">
<polygon fill="#ede3dc" stroke="#b26b33" points="391.5,-904 303.5,-904 303.5,-846 391.5,-846 391.5,-904"></polygon>
<text text-anchor="middle" x="347.5" y="-892.8" font-family="Times,serif" font-size="9.00">queue</text>
<text text-anchor="middle" x="347.5" y="-882.8" font-family="Times,serif" font-size="9.00">(*Queue)</text>
<text text-anchor="middle" x="347.5" y="-872.8" font-family="Times,serif" font-size="9.00">GetCQEntry</text>
<text text-anchor="middle" x="347.5" y="-862.8" font-family="Times,serif" font-size="9.00">0.01s (0.024%)</text>
<text text-anchor="middle" x="347.5" y="-852.8" font-family="Times,serif" font-size="9.00">of 6s (14.22%)</text>
</a>
</g>
</g>
<!-- N1&#45;&gt;N30 -->
<g id="edge7" class="edge">
<title>N1-&gt;N30</title>
<g id="a_edge7"><a xlink:title="main.main -> github.com/ii64/gouring/queue.(*Queue).GetCQEntry (6s)">
<path fill="none" stroke="#b26b33" d="M226.04,-1009.75C247.74,-990.12 272.5,-966.66 293.5,-944 302.64,-934.14 311.96,-922.9 320.23,-912.44"></path>
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</g>
<g id="a_edge7-label"><a xlink:title="main.main -> github.com/ii64/gouring/queue.(*Queue).GetCQEntry (6s)">
<text text-anchor="middle" x="303" y="-980.8" font-family="Times,serif" font-size="14.00"> 6s</text>
<text text-anchor="middle" x="303" y="-965.8" font-family="Times,serif" font-size="14.00"> (inline)</text>
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<!-- N33 -->
<g id="node33" class="node">
<title>N33</title>
<g id="a_node33"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).Submit (2.05s)">
<polygon fill="#edeae7" stroke="#b2a187" points="586,-897 497,-897 497,-853 586,-853 586,-897"></polygon>
<text text-anchor="middle" x="541.5" y="-886.6" font-family="Times,serif" font-size="8.00">queue</text>
<text text-anchor="middle" x="541.5" y="-877.6" font-family="Times,serif" font-size="8.00">(*Queue)</text>
<text text-anchor="middle" x="541.5" y="-868.6" font-family="Times,serif" font-size="8.00">Submit</text>
<text text-anchor="middle" x="541.5" y="-859.6" font-family="Times,serif" font-size="8.00">0 of 2.05s (4.86%)</text>
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</g>
<!-- N1&#45;&gt;N33 -->
<g id="edge20" class="edge">
<title>N1-&gt;N33</title>
<g id="a_edge20"><a xlink:title="main.main -> github.com/ii64/gouring/queue.(*Queue).Submit (2.05s)">
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<text text-anchor="middle" x="421" y="-980.8" font-family="Times,serif" font-size="14.00"> 2.05s</text>
<text text-anchor="middle" x="421" y="-965.8" font-family="Times,serif" font-size="14.00"> (inline)</text>
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<!-- N2 -->
<g id="node2" class="node">
<title>N2</title>
<g id="a_node2"><a xlink:title="runtime.goschedImpl (21.46s)">
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<text text-anchor="middle" x="1259.5" y="-893.8" font-family="Times,serif" font-size="14.00">runtime</text>
<text text-anchor="middle" x="1259.5" y="-878.8" font-family="Times,serif" font-size="14.00">goschedImpl</text>
<text text-anchor="middle" x="1259.5" y="-863.8" font-family="Times,serif" font-size="14.00">0.51s (1.21%)</text>
<text text-anchor="middle" x="1259.5" y="-848.8" font-family="Times,serif" font-size="14.00">of 21.46s (50.85%)</text>
</a>
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<!-- N3 -->
<g id="node3" class="node">
<title>N3</title>
<g id="a_node3"><a xlink:title="runtime.schedule (13.81s)">
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<text text-anchor="middle" x="1259.5" y="-711.6" font-family="Times,serif" font-size="18.00">runtime</text>
<text text-anchor="middle" x="1259.5" y="-691.6" font-family="Times,serif" font-size="18.00">schedule</text>
<text text-anchor="middle" x="1259.5" y="-671.6" font-family="Times,serif" font-size="18.00">1.51s (3.58%)</text>
<text text-anchor="middle" x="1259.5" y="-651.6" font-family="Times,serif" font-size="18.00">of 13.81s (32.73%)</text>
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<!-- N2&#45;&gt;N3 -->
<g id="edge4" class="edge">
<title>N2-&gt;N3</title>
<g id="a_edge4"><a xlink:title="runtime.goschedImpl -> runtime.schedule (13.80s)">
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<polygon fill="#b23200" stroke="#b23200" stroke-width="2" points="1263,-740.22 1259.5,-730.22 1256,-740.22 1263,-740.22"></polygon>
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<g id="a_edge4-label"><a xlink:title="runtime.goschedImpl -> runtime.schedule (13.80s)">
<text text-anchor="middle" x="1286" y="-776.8" font-family="Times,serif" font-size="14.00"> 13.80s</text>
</a>
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<!-- N7 -->
<g id="node7" class="node">
<title>N7</title>
<g id="a_node7"><a xlink:title="runtime.casgstatus (5.16s)">
<polygon fill="#ede5de" stroke="#b27845" points="885.5,-387 671.5,-387 671.5,-283 885.5,-283 885.5,-387"></polygon>
<text text-anchor="middle" x="778.5" y="-365.4" font-family="Times,serif" font-size="22.00">runtime</text>
<text text-anchor="middle" x="778.5" y="-341.4" font-family="Times,serif" font-size="22.00">casgstatus</text>
<text text-anchor="middle" x="778.5" y="-317.4" font-family="Times,serif" font-size="22.00">3.11s (7.37%)</text>
<text text-anchor="middle" x="778.5" y="-293.4" font-family="Times,serif" font-size="22.00">of 5.16s (12.23%)</text>
</a>
</g>
</g>
<!-- N2&#45;&gt;N7 -->
<g id="edge15" class="edge">
<title>N2-&gt;N7</title>
<g id="a_edge15"><a xlink:title="runtime.goschedImpl -> runtime.casgstatus (2.75s)">
<path fill="none" stroke="#b29878" d="M1183.06,-845.07C1076.14,-800.14 885.21,-702.64 797.5,-551 770.64,-504.56 767.88,-442.82 770.67,-397.41"></path>
<polygon fill="#b29878" stroke="#b29878" points="774.16,-397.63 771.38,-387.41 767.18,-397.13 774.16,-397.63"></polygon>
</a>
</g>
<g id="a_edge15-label"><a xlink:title="runtime.goschedImpl -> runtime.casgstatus (2.75s)">
<text text-anchor="middle" x="848.5" y="-580.3" font-family="Times,serif" font-size="14.00"> 2.75s</text>
</a>
</g>
</g>
<!-- N16 -->
<g id="node16" class="node">
<title>N16</title>
<g id="a_node16"><a xlink:title="runtime.unlock (3.78s)">
<polygon fill="#ede7e2" stroke="#b28b62" points="1488,-361 1391,-361 1391,-309 1488,-309 1488,-361"></polygon>
<text text-anchor="middle" x="1439.5" y="-349" font-family="Times,serif" font-size="10.00">runtime</text>
<text text-anchor="middle" x="1439.5" y="-338" font-family="Times,serif" font-size="10.00">unlock</text>
<text text-anchor="middle" x="1439.5" y="-327" font-family="Times,serif" font-size="10.00">0.06s (0.14%)</text>
<text text-anchor="middle" x="1439.5" y="-316" font-family="Times,serif" font-size="10.00">of 3.78s (8.96%)</text>
</a>
</g>
</g>
<!-- N2&#45;&gt;N16 -->
<g id="edge18" class="edge">
<title>N2-&gt;N16</title>
<g id="a_edge18"><a xlink:title="runtime.goschedImpl -> runtime.unlock (2.06s)">
<path fill="none" stroke="#b2a086" d="M1296.12,-840.94C1318.53,-818.75 1345.97,-787.67 1362.5,-755 1431.41,-618.76 1420.6,-571.62 1438.5,-420 1440.37,-404.15 1440.83,-386.5 1440.73,-371.49"></path>
<polygon fill="#b2a086" stroke="#b2a086" points="1444.23,-371.03 1440.58,-361.08 1437.23,-371.13 1444.23,-371.03"></polygon>
</a>
</g>
<g id="a_edge18-label"><a xlink:title="runtime.goschedImpl -> runtime.unlock (2.06s)">
<text text-anchor="middle" x="1450" y="-587.8" font-family="Times,serif" font-size="14.00"> 2.06s</text>
<text text-anchor="middle" x="1450" y="-572.8" font-family="Times,serif" font-size="14.00"> (inline)</text>
</a>
</g>
</g>
<!-- N19 -->
<g id="node19" class="node">
<title>N19</title>
<g id="a_node19"><a xlink:title="runtime.lock (3.09s)">
<polygon fill="#ede9e4" stroke="#b29471" points="1617,-353 1528,-353 1528,-317 1617,-317 1617,-353"></polygon>
<text text-anchor="middle" x="1572.5" y="-342.1" font-family="Times,serif" font-size="8.00">runtime</text>
<text text-anchor="middle" x="1572.5" y="-333.1" font-family="Times,serif" font-size="8.00">lock</text>
<text text-anchor="middle" x="1572.5" y="-324.1" font-family="Times,serif" font-size="8.00">0 of 3.09s (7.32%)</text>
</a>
</g>
</g>
<!-- N2&#45;&gt;N19 -->
<g id="edge17" class="edge">
<title>N2-&gt;N19</title>
<g id="a_edge17"><a xlink:title="runtime.goschedImpl -> runtime.lock (2.06s)">
<path fill="none" stroke="#b2a086" d="M1308.95,-840.76C1338.74,-818.94 1375.93,-788.34 1402.5,-755 1503.24,-628.57 1551.91,-434.42 1567.09,-363.31"></path>
<polygon fill="#b2a086" stroke="#b2a086" points="1570.56,-363.86 1569.17,-353.35 1563.7,-362.43 1570.56,-363.86"></polygon>
</a>
</g>
<g id="a_edge17-label"><a xlink:title="runtime.goschedImpl -> runtime.lock (2.06s)">
<text text-anchor="middle" x="1526.5" y="-580.3" font-family="Times,serif" font-size="14.00"> 2.06s</text>
</a>
</g>
</g>
<!-- N6 -->
<g id="node6" class="node">
<title>N6</title>
<g id="a_node6"><a xlink:title="runtime.findrunnable (6.46s)">
<polygon fill="#ede2da" stroke="#b26429" points="1340.5,-534.5 1178.5,-534.5 1178.5,-454.5 1340.5,-454.5 1340.5,-534.5"></polygon>
<text text-anchor="middle" x="1259.5" y="-517.7" font-family="Times,serif" font-size="16.00">runtime</text>
<text text-anchor="middle" x="1259.5" y="-499.7" font-family="Times,serif" font-size="16.00">findrunnable</text>
<text text-anchor="middle" x="1259.5" y="-481.7" font-family="Times,serif" font-size="16.00">1s (2.37%)</text>
<text text-anchor="middle" x="1259.5" y="-463.7" font-family="Times,serif" font-size="16.00">of 6.46s (15.31%)</text>
</a>
</g>
</g>
<!-- N3&#45;&gt;N6 -->
<g id="edge6" class="edge">
<title>N3-&gt;N6</title>
<g id="a_edge6"><a xlink:title="runtime.schedule -> runtime.findrunnable (6.46s)">
<path fill="none" stroke="#b26429" d="M1259.5,-642C1259.5,-613.18 1259.5,-575.15 1259.5,-545.06"></path>
<polygon fill="#b26429" stroke="#b26429" points="1263,-544.78 1259.5,-534.78 1256,-544.78 1263,-544.78"></polygon>
</a>
</g>
<g id="a_edge6-label"><a xlink:title="runtime.schedule -> runtime.findrunnable (6.46s)">
<text text-anchor="middle" x="1281.5" y="-580.3" font-family="Times,serif" font-size="14.00"> 6.46s</text>
</a>
</g>
</g>
<!-- N13 -->
<g id="node13" class="node">
<title>N13</title>
<g id="a_node13"><a xlink:title="runtime.execute (4.68s)">
<polygon fill="#ede6df" stroke="#b27f4f" points="1000.5,-542.5 806.5,-542.5 806.5,-446.5 1000.5,-446.5 1000.5,-542.5"></polygon>
<text text-anchor="middle" x="903.5" y="-522.5" font-family="Times,serif" font-size="20.00">runtime</text>
<text text-anchor="middle" x="903.5" y="-500.5" font-family="Times,serif" font-size="20.00">execute</text>
<text text-anchor="middle" x="903.5" y="-478.5" font-family="Times,serif" font-size="20.00">2.20s (5.21%)</text>
<text text-anchor="middle" x="903.5" y="-456.5" font-family="Times,serif" font-size="20.00">of 4.68s (11.09%)</text>
</a>
</g>
</g>
<!-- N3&#45;&gt;N13 -->
<g id="edge9" class="edge">
<title>N3-&gt;N13</title>
<g id="a_edge9"><a xlink:title="runtime.schedule -> runtime.execute (4.68s)">
<path fill="none" stroke="#b27f4f" d="M1165.46,-671.84C1107.4,-660.12 1033.71,-638.45 978.5,-599 960.97,-586.47 945.94,-568.56 934.05,-551.14"></path>
<polygon fill="#b27f4f" stroke="#b27f4f" points="936.89,-549.09 928.46,-542.66 931.04,-552.94 936.89,-549.09"></polygon>
</a>
</g>
<g id="a_edge9-label"><a xlink:title="runtime.schedule -> runtime.execute (4.68s)">
<text text-anchor="middle" x="1000.5" y="-580.3" font-family="Times,serif" font-size="14.00"> 4.68s</text>
</a>
</g>
</g>
<!-- N15 -->
<g id="node15" class="node">
<title>N15</title>
<g id="a_node15"><a xlink:title="runtime.checkTimers (2.02s)">
<polygon fill="#edeae7" stroke="#b2a187" points="1055.5,-375 903.5,-375 903.5,-295 1055.5,-295 1055.5,-375"></polygon>
<text text-anchor="middle" x="979.5" y="-358.2" font-family="Times,serif" font-size="16.00">runtime</text>
<text text-anchor="middle" x="979.5" y="-340.2" font-family="Times,serif" font-size="16.00">checkTimers</text>
<text text-anchor="middle" x="979.5" y="-322.2" font-family="Times,serif" font-size="16.00">0.88s (2.09%)</text>
<text text-anchor="middle" x="979.5" y="-304.2" font-family="Times,serif" font-size="16.00">of 2.02s (4.79%)</text>
</a>
</g>
</g>
<!-- N3&#45;&gt;N15 -->
<g id="edge30" class="edge">
<title>N3-&gt;N15</title>
<g id="a_edge30"><a xlink:title="runtime.schedule -> runtime.checkTimers (0.89s)">
<path fill="none" stroke="#b2ac9f" d="M1165.72,-642C1126.04,-619.74 1082.23,-589.16 1052.5,-551 1042.02,-537.55 1012.37,-444.1 994.24,-384.91"></path>
<polygon fill="#b2ac9f" stroke="#b2ac9f" points="997.49,-383.55 991.22,-375.01 990.79,-385.59 997.49,-383.55"></polygon>
</a>
</g>
<g id="a_edge30-label"><a xlink:title="runtime.schedule -> runtime.checkTimers (0.89s)">
<text text-anchor="middle" x="1074.5" y="-490.8" font-family="Times,serif" font-size="14.00"> 0.89s</text>
</a>
</g>
</g>
<!-- N24 -->
<g id="node24" class="node">
<title>N24</title>
<g id="a_node24"><a xlink:title="runtime.runqget (0.45s)">
<polygon fill="#edeceb" stroke="#b2b0a8" points="1189.5,-361.5 1073.5,-361.5 1073.5,-308.5 1189.5,-308.5 1189.5,-361.5"></polygon>
<text text-anchor="middle" x="1131.5" y="-346.3" font-family="Times,serif" font-size="14.00">runtime</text>
<text text-anchor="middle" x="1131.5" y="-331.3" font-family="Times,serif" font-size="14.00">runqget</text>
<text text-anchor="middle" x="1131.5" y="-316.3" font-family="Times,serif" font-size="14.00">0.45s (1.07%)</text>
</a>
</g>
</g>
<!-- N3&#45;&gt;N24 -->
<g id="edge35" class="edge">
<title>N3-&gt;N24</title>
<g id="a_edge35"><a xlink:title="runtime.schedule -> runtime.runqget (0.20s)">
<path fill="none" stroke="#b2b1ae" d="M1201.55,-641.9C1174,-618.21 1143.27,-586.44 1125.5,-551 1096.17,-492.5 1095.18,-469.45 1106.5,-405 1108.49,-393.66 1112.19,-381.73 1116.14,-371.04"></path>
<polygon fill="#b2b1ae" stroke="#b2b1ae" points="1119.44,-372.21 1119.8,-361.63 1112.92,-369.68 1119.44,-372.21"></polygon>
</a>
</g>
<g id="a_edge35-label"><a xlink:title="runtime.schedule -> runtime.runqget (0.20s)">
<text text-anchor="middle" x="1147.5" y="-490.8" font-family="Times,serif" font-size="14.00"> 0.20s</text>
</a>
</g>
</g>
<!-- N4 -->
<g id="node4" class="node">
<title>N4</title>
<g id="a_node4"><a xlink:title="runtime.mcall (22.18s)">
<polygon fill="#edd9d5" stroke="#b21f00" points="1335.5,-1225 1183.5,-1225 1183.5,-1157 1335.5,-1157 1335.5,-1225"></polygon>
<text text-anchor="middle" x="1259.5" y="-1209.8" font-family="Times,serif" font-size="14.00">runtime</text>
<text text-anchor="middle" x="1259.5" y="-1194.8" font-family="Times,serif" font-size="14.00">mcall</text>
<text text-anchor="middle" x="1259.5" y="-1179.8" font-family="Times,serif" font-size="14.00">0.41s (0.97%)</text>
<text text-anchor="middle" x="1259.5" y="-1164.8" font-family="Times,serif" font-size="14.00">of 22.18s (52.56%)</text>
</a>
</g>
</g>
<!-- N21 -->
<g id="node21" class="node">
<title>N21</title>
<g id="a_node21"><a xlink:title="runtime.gosched_m (21.76s)">
<polygon fill="#edd9d5" stroke="#b22000" points="1330.5,-1090 1188.5,-1090 1188.5,-1026 1330.5,-1026 1330.5,-1090"></polygon>
<text text-anchor="middle" x="1259.5" y="-1075.6" font-family="Times,serif" font-size="13.00">runtime</text>
<text text-anchor="middle" x="1259.5" y="-1061.6" font-family="Times,serif" font-size="13.00">gosched_m</text>
<text text-anchor="middle" x="1259.5" y="-1047.6" font-family="Times,serif" font-size="13.00">0.30s (0.71%)</text>
<text text-anchor="middle" x="1259.5" y="-1033.6" font-family="Times,serif" font-size="13.00">of 21.76s (51.56%)</text>
</a>
</g>
</g>
<!-- N4&#45;&gt;N21 -->
<g id="edge1" class="edge">
<title>N4-&gt;N21</title>
<g id="a_edge1"><a xlink:title="runtime.mcall -> runtime.gosched_m (21.76s)">
<path fill="none" stroke="#b22000" stroke-width="3" d="M1259.5,-1156.94C1259.5,-1139.76 1259.5,-1118.58 1259.5,-1100.32"></path>
<polygon fill="#b22000" stroke="#b22000" stroke-width="3" points="1263,-1100.24 1259.5,-1090.24 1256,-1100.24 1263,-1100.24"></polygon>
</a>
</g>
<g id="a_edge1-label"><a xlink:title="runtime.mcall -> runtime.gosched_m (21.76s)">
<text text-anchor="middle" x="1286" y="-1127.8" font-family="Times,serif" font-size="14.00"> 21.76s</text>
</a>
</g>
</g>
<!-- N5 -->
<g id="node5" class="node">
<title>N5</title>
<g id="a_node5"><a xlink:title="runtime.main (18.94s)">
<polygon fill="#eddad5" stroke="#b22600" points="221.5,-1209 121.5,-1209 121.5,-1173 221.5,-1173 221.5,-1209"></polygon>
<text text-anchor="middle" x="171.5" y="-1198.1" font-family="Times,serif" font-size="8.00">runtime</text>
<text text-anchor="middle" x="171.5" y="-1189.1" font-family="Times,serif" font-size="8.00">main</text>
<text text-anchor="middle" x="171.5" y="-1180.1" font-family="Times,serif" font-size="8.00">0 of 18.94s (44.88%)</text>
</a>
</g>
</g>
<!-- N5&#45;&gt;N1 -->
<g id="edge3" class="edge">
<title>N5-&gt;N1</title>
<g id="a_edge3"><a xlink:title="runtime.main -> main.main (18.94s)">
<path fill="none" stroke="#b22600" stroke-width="3" d="M171.5,-1172.87C171.5,-1158.4 171.5,-1136.8 171.5,-1116.29"></path>
<polygon fill="#b22600" stroke="#b22600" stroke-width="3" points="175,-1116.03 171.5,-1106.03 168,-1116.03 175,-1116.03"></polygon>
</a>
</g>
<g id="a_edge3-label"><a xlink:title="runtime.main -> main.main (18.94s)">
<text text-anchor="middle" x="198" y="-1127.8" font-family="Times,serif" font-size="14.00"> 18.94s</text>
</a>
</g>
</g>
<!-- N6&#45;&gt;N15 -->
<g id="edge28" class="edge">
<title>N6-&gt;N15</title>
<g id="a_edge28"><a xlink:title="runtime.findrunnable -> runtime.checkTimers (1.13s)">
<path fill="none" stroke="#b2aa9a" d="M1193.85,-454.49C1184.06,-448.87 1174.05,-443.22 1164.5,-438 1120.72,-414.07 1108.14,-411.18 1064.5,-387 1060.58,-384.83 1056.59,-382.57 1052.56,-380.27"></path>
<polygon fill="#b2aa9a" stroke="#b2aa9a" points="1054.15,-377.15 1043.74,-375.18 1050.65,-383.21 1054.15,-377.15"></polygon>
</a>
</g>
<g id="a_edge28-label"><a xlink:title="runtime.findrunnable -> runtime.checkTimers (1.13s)">
<text text-anchor="middle" x="1150.5" y="-408.8" font-family="Times,serif" font-size="14.00"> 1.13s</text>
</a>
</g>
</g>
<!-- N6&#45;&gt;N16 -->
<g id="edge24" class="edge">
<title>N6-&gt;N16</title>
<g id="a_edge24"><a xlink:title="runtime.findrunnable -> runtime.unlock (1.68s)">
<path fill="none" stroke="#b2a48e" d="M1282.11,-454.25C1293.74,-437.04 1309.31,-417.87 1327.5,-405 1348.49,-390.14 1360.22,-399.85 1382.5,-387 1391.56,-381.78 1400.44,-374.94 1408.39,-367.98"></path>
<polygon fill="#b2a48e" stroke="#b2a48e" points="1410.98,-370.35 1416.01,-361.03 1406.26,-365.18 1410.98,-370.35"></polygon>
</a>
</g>
<g id="a_edge24-label"><a xlink:title="runtime.findrunnable -> runtime.unlock (1.68s)">
<text text-anchor="middle" x="1349.5" y="-408.8" font-family="Times,serif" font-size="14.00"> 1.68s</text>
</a>
</g>
</g>
<!-- N6&#45;&gt;N19 -->
<g id="edge29" class="edge">
<title>N6-&gt;N19</title>
<g id="a_edge29"><a xlink:title="runtime.findrunnable -> runtime.lock (1.01s)">
<path fill="none" stroke="#b2ab9d" d="M1340.55,-461.43C1387.4,-441.86 1446.9,-415.23 1497.5,-387 1512.39,-378.69 1528.1,-368.29 1541.28,-359.05"></path>
<polygon fill="#b2ab9d" stroke="#b2ab9d" points="1543.41,-361.82 1549.53,-353.18 1539.35,-356.12 1543.41,-361.82"></polygon>
</a>
</g>
<g id="a_edge29-label"><a xlink:title="runtime.findrunnable -> runtime.lock (1.01s)">
<text text-anchor="middle" x="1481.5" y="-408.8" font-family="Times,serif" font-size="14.00"> 1.01s</text>
</a>
</g>
</g>
<!-- N20 -->
<g id="node20" class="node">
<title>N20</title>
<g id="a_node20"><a xlink:title="runtime.globrunqget (1.39s)">
<polygon fill="#edebe9" stroke="#b2a795" points="1373,-379 1208,-379 1208,-291 1373,-291 1373,-379"></polygon>
<text text-anchor="middle" x="1290.5" y="-360.6" font-family="Times,serif" font-size="18.00">runtime</text>
<text text-anchor="middle" x="1290.5" y="-340.6" font-family="Times,serif" font-size="18.00">globrunqget</text>
<text text-anchor="middle" x="1290.5" y="-320.6" font-family="Times,serif" font-size="18.00">1.34s (3.18%)</text>
<text text-anchor="middle" x="1290.5" y="-300.6" font-family="Times,serif" font-size="18.00">of 1.39s (3.29%)</text>
</a>
</g>
</g>
<!-- N6&#45;&gt;N20 -->
<g id="edge25" class="edge">
<title>N6-&gt;N20</title>
<g id="a_edge25"><a xlink:title="runtime.findrunnable -> runtime.globrunqget (1.38s)">
<path fill="none" stroke="#b2a895" d="M1256.62,-454.36C1256.34,-438.84 1257.09,-420.93 1260.5,-405 1261.64,-399.65 1263.22,-394.21 1265.05,-388.84"></path>
<polygon fill="#b2a895" stroke="#b2a895" points="1268.39,-389.89 1268.58,-379.3 1261.82,-387.46 1268.39,-389.89"></polygon>
</a>
</g>
<g id="a_edge25-label"><a xlink:title="runtime.findrunnable -> runtime.globrunqget (1.38s)">
<text text-anchor="middle" x="1282.5" y="-408.8" font-family="Times,serif" font-size="14.00"> 1.38s</text>
</a>
</g>
</g>
<!-- N6&#45;&gt;N24 -->
<g id="edge32" class="edge">
<title>N6-&gt;N24</title>
<g id="a_edge32"><a xlink:title="runtime.findrunnable -> runtime.runqget (0.25s)">
<path fill="none" stroke="#b2b1ad" d="M1227.53,-454.16C1206.37,-428.13 1178.93,-394.36 1158.8,-369.59"></path>
<polygon fill="#b2b1ad" stroke="#b2b1ad" points="1161.29,-367.11 1152.27,-361.56 1155.86,-371.53 1161.29,-367.11"></polygon>
</a>
</g>
<g id="a_edge32-label"><a xlink:title="runtime.findrunnable -> runtime.runqget (0.25s)">
<text text-anchor="middle" x="1221.5" y="-408.8" font-family="Times,serif" font-size="14.00"> 0.25s</text>
</a>
</g>
</g>
<!-- N10 -->
<g id="node10" class="node">
<title>N10</title>
<g id="a_node10"><a xlink:title="runtime.nanotime (2.97s)">
<polygon fill="#ede9e4" stroke="#b29673" points="864,-217 693,-217 693,-137 864,-137 864,-217"></polygon>
<text text-anchor="middle" x="778.5" y="-195.4" font-family="Times,serif" font-size="22.00">runtime</text>
<text text-anchor="middle" x="778.5" y="-171.4" font-family="Times,serif" font-size="22.00">nanotime</text>
<text text-anchor="middle" x="778.5" y="-147.4" font-family="Times,serif" font-size="22.00">2.97s (7.04%)</text>
</a>
</g>
</g>
<!-- N7&#45;&gt;N10 -->
<g id="edge22" class="edge">
<title>N7-&gt;N10</title>
<g id="a_edge22"><a xlink:title="runtime.casgstatus -> runtime.nanotime (1.83s)">
<path fill="none" stroke="#b2a38b" d="M778.5,-282.92C778.5,-265.09 778.5,-245.13 778.5,-227.44"></path>
<polygon fill="#b2a38b" stroke="#b2a38b" points="782,-227.31 778.5,-217.32 775,-227.32 782,-227.31"></polygon>
</a>
</g>
<g id="a_edge22-label"><a xlink:title="runtime.casgstatus -> runtime.nanotime (1.83s)">
<text text-anchor="middle" x="806" y="-253.8" font-family="Times,serif" font-size="14.00"> 1.83s</text>
<text text-anchor="middle" x="806" y="-238.8" font-family="Times,serif" font-size="14.00"> (inline)</text>
</a>
</g>
</g>
<!-- N28 -->
<g id="node28" class="node">
<title>N28</title>
<g id="a_node28"><a xlink:title="runtime.(*timeHistogram).record (0.22s)">
<polygon fill="#ededec" stroke="#b2b1ad" points="674.5,-207 552.5,-207 552.5,-147 674.5,-147 674.5,-207"></polygon>
<text text-anchor="middle" x="613.5" y="-193.4" font-family="Times,serif" font-size="12.00">runtime</text>
<text text-anchor="middle" x="613.5" y="-180.4" font-family="Times,serif" font-size="12.00">(*timeHistogram)</text>
<text text-anchor="middle" x="613.5" y="-167.4" font-family="Times,serif" font-size="12.00">record</text>
<text text-anchor="middle" x="613.5" y="-154.4" font-family="Times,serif" font-size="12.00">0.22s (0.52%)</text>
</a>
</g>
</g>
<!-- N7&#45;&gt;N28 -->
<g id="edge34" class="edge">
<title>N7-&gt;N28</title>
<g id="a_edge34"><a xlink:title="runtime.casgstatus -> runtime.(*timeHistogram).record (0.22s)">
<path fill="none" stroke="#b2b1ad" d="M724.47,-282.92C700.76,-260.5 673.48,-234.71 651.9,-214.3"></path>
<polygon fill="#b2b1ad" stroke="#b2b1ad" points="654.19,-211.65 644.52,-207.33 649.38,-216.74 654.19,-211.65"></polygon>
</a>
</g>
<g id="a_edge34-label"><a xlink:title="runtime.casgstatus -> runtime.(*timeHistogram).record (0.22s)">
<text text-anchor="middle" x="729" y="-253.8" font-family="Times,serif" font-size="14.00"> 0.22s</text>
<text text-anchor="middle" x="729" y="-238.8" font-family="Times,serif" font-size="14.00"> (inline)</text>
</a>
</g>
</g>
<!-- N12 -->
<g id="node12" class="node">
<title>N12</title>
<g id="a_node12"><a xlink:title="github.com/ii64/gouring/queue.(*Queue)._getSQEntry (4.56s)">
<polygon fill="#ede6e0" stroke="#b28152" points="215.5,-750 1.5,-750 1.5,-622 215.5,-622 215.5,-750"></polygon>
<text text-anchor="middle" x="108.5" y="-728.4" font-family="Times,serif" font-size="22.00">queue</text>
<text text-anchor="middle" x="108.5" y="-704.4" font-family="Times,serif" font-size="22.00">(*Queue)</text>
<text text-anchor="middle" x="108.5" y="-680.4" font-family="Times,serif" font-size="22.00">_getSQEntry</text>
<text text-anchor="middle" x="108.5" y="-656.4" font-family="Times,serif" font-size="22.00">2.83s (6.71%)</text>
<text text-anchor="middle" x="108.5" y="-632.4" font-family="Times,serif" font-size="22.00">of 4.56s (10.81%)</text>
</a>
</g>
</g>
<!-- N8&#45;&gt;N12 -->
<g id="edge10" class="edge">
<title>N8-&gt;N12</title>
<g id="a_edge10"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetSQEntry -> github.com/ii64/gouring/queue.(*Queue)._getSQEntry (4.56s)">
<path fill="none" stroke="#b28152" d="M148.58,-805.96C143.53,-790.97 138.16,-775.03 133.05,-759.86"></path>
<polygon fill="#b28152" stroke="#b28152" points="136.24,-758.37 129.73,-750.02 129.61,-760.61 136.24,-758.37"></polygon>
</a>
</g>
<g id="a_edge10-label"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetSQEntry -> github.com/ii64/gouring/queue.(*Queue)._getSQEntry (4.56s)">
<text text-anchor="middle" x="164.5" y="-776.8" font-family="Times,serif" font-size="14.00"> 4.56s</text>
</a>
</g>
</g>
<!-- N9 -->
<g id="node9" class="node">
<title>N9</title>
<g id="a_node9"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetCQEntryWait (5.99s)">
<polygon fill="#ede3dc" stroke="#b26b33" points="461,-755 234,-755 234,-617 461,-617 461,-755"></polygon>
<text text-anchor="middle" x="347.5" y="-731.8" font-family="Times,serif" font-size="24.00">queue</text>
<text text-anchor="middle" x="347.5" y="-705.8" font-family="Times,serif" font-size="24.00">(*Queue)</text>
<text text-anchor="middle" x="347.5" y="-679.8" font-family="Times,serif" font-size="24.00">GetCQEntryWait</text>
<text text-anchor="middle" x="347.5" y="-653.8" font-family="Times,serif" font-size="24.00">3.83s (9.08%)</text>
<text text-anchor="middle" x="347.5" y="-627.8" font-family="Times,serif" font-size="24.00">of 5.99s (14.19%)</text>
</a>
</g>
</g>
<!-- N23 -->
<g id="node23" class="node">
<title>N23</title>
<g id="a_node23"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).cqPeek (1.16s)">
<polygon fill="#edece9" stroke="#b2aa99" points="301.5,-536.5 167.5,-536.5 167.5,-452.5 301.5,-452.5 301.5,-536.5"></polygon>
<text text-anchor="middle" x="234.5" y="-518.9" font-family="Times,serif" font-size="17.00">queue</text>
<text text-anchor="middle" x="234.5" y="-499.9" font-family="Times,serif" font-size="17.00">(*Queue)</text>
<text text-anchor="middle" x="234.5" y="-480.9" font-family="Times,serif" font-size="17.00">cqPeek</text>
<text text-anchor="middle" x="234.5" y="-461.9" font-family="Times,serif" font-size="17.00">1.16s (2.75%)</text>
</a>
</g>
</g>
<!-- N9&#45;&gt;N23 -->
<g id="edge26" class="edge">
<title>N9-&gt;N23</title>
<g id="a_edge26"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetCQEntryWait -> github.com/ii64/gouring/queue.(*Queue).cqPeek (1.16s)">
<path fill="none" stroke="#b2aa99" d="M306.86,-616.85C292.79,-593.26 277.3,-567.27 264.26,-545.42"></path>
<polygon fill="#b2aa99" stroke="#b2aa99" points="267.16,-543.43 259.03,-536.63 261.14,-547.02 267.16,-543.43"></polygon>
</a>
</g>
<g id="a_edge26-label"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetCQEntryWait -> github.com/ii64/gouring/queue.(*Queue).cqPeek (1.16s)">
<text text-anchor="middle" x="322" y="-587.8" font-family="Times,serif" font-size="14.00"> 1.16s</text>
<text text-anchor="middle" x="322" y="-572.8" font-family="Times,serif" font-size="14.00"> (inline)</text>
</a>
</g>
</g>
<!-- N25 -->
<g id="node25" class="node">
<title>N25</title>
<g id="a_node25"><a xlink:title="github.com/ii64/gouring.SQRing.IsCQOverflow (0.59s)">
<polygon fill="#edeceb" stroke="#b2afa6" points="441.5,-532.5 319.5,-532.5 319.5,-456.5 441.5,-456.5 441.5,-532.5"></polygon>
<text text-anchor="middle" x="380.5" y="-516.5" font-family="Times,serif" font-size="15.00">gouring</text>
<text text-anchor="middle" x="380.5" y="-499.5" font-family="Times,serif" font-size="15.00">SQRing</text>
<text text-anchor="middle" x="380.5" y="-482.5" font-family="Times,serif" font-size="15.00">IsCQOverflow</text>
<text text-anchor="middle" x="380.5" y="-465.5" font-family="Times,serif" font-size="15.00">0.59s (1.40%)</text>
</a>
</g>
</g>
<!-- N9&#45;&gt;N25 -->
<g id="edge31" class="edge">
<title>N9-&gt;N25</title>
<g id="a_edge31"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetCQEntryWait -> github.com/ii64/gouring.SQRing.IsCQOverflow (0.59s)">
<path fill="none" stroke="#b2afa6" d="M359.37,-616.85C363.66,-592.19 368.41,-564.92 372.32,-542.48"></path>
<polygon fill="#b2afa6" stroke="#b2afa6" points="375.78,-542.99 374.05,-532.54 368.89,-541.79 375.78,-542.99"></polygon>
</a>
</g>
<g id="a_edge31-label"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetCQEntryWait -> github.com/ii64/gouring.SQRing.IsCQOverflow (0.59s)">
<text text-anchor="middle" x="395" y="-587.8" font-family="Times,serif" font-size="14.00"> 0.59s</text>
<text text-anchor="middle" x="395" y="-572.8" font-family="Times,serif" font-size="14.00"> (inline)</text>
</a>
</g>
</g>
<!-- N27 -->
<g id="node27" class="node">
<title>N27</title>
<g id="a_node27"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).cqAdvance (0.24s)">
<polygon fill="#ededec" stroke="#b2b1ad" points="559,-524.5 460,-524.5 460,-464.5 559,-464.5 559,-524.5"></polygon>
<text text-anchor="middle" x="509.5" y="-510.9" font-family="Times,serif" font-size="12.00">queue</text>
<text text-anchor="middle" x="509.5" y="-497.9" font-family="Times,serif" font-size="12.00">(*Queue)</text>
<text text-anchor="middle" x="509.5" y="-484.9" font-family="Times,serif" font-size="12.00">cqAdvance</text>
<text text-anchor="middle" x="509.5" y="-471.9" font-family="Times,serif" font-size="12.00">0.24s (0.57%)</text>
</a>
</g>
</g>
<!-- N9&#45;&gt;N27 -->
<g id="edge33" class="edge">
<title>N9-&gt;N27</title>
<g id="a_edge33"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetCQEntryWait -> github.com/ii64/gouring/queue.(*Queue).cqAdvance (0.24s)">
<path fill="none" stroke="#b2b1ad" d="M410.88,-616.84C416.21,-610.85 421.48,-604.85 426.5,-599 444.96,-577.5 464.85,-552.75 480.53,-532.85"></path>
<polygon fill="#b2b1ad" stroke="#b2b1ad" points="483.33,-534.95 486.76,-524.92 477.83,-530.63 483.33,-534.95"></polygon>
</a>
</g>
<g id="a_edge33-label"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetCQEntryWait -> github.com/ii64/gouring/queue.(*Queue).cqAdvance (0.24s)">
<text text-anchor="middle" x="478" y="-587.8" font-family="Times,serif" font-size="14.00"> 0.24s</text>
<text text-anchor="middle" x="478" y="-572.8" font-family="Times,serif" font-size="14.00"> (inline)</text>
</a>
</g>
</g>
<!-- N11 -->
<g id="node11" class="node">
<title>N11</title>
<g id="a_node11"><a xlink:title="runtime.unlock2 (3.69s)">
<polygon fill="#ede8e2" stroke="#b28c64" points="1530.5,-86 1348.5,-86 1348.5,0 1530.5,0 1530.5,-86"></polygon>
<text text-anchor="middle" x="1439.5" y="-62.8" font-family="Times,serif" font-size="24.00">runtime</text>
<text text-anchor="middle" x="1439.5" y="-36.8" font-family="Times,serif" font-size="24.00">unlock2</text>
<text text-anchor="middle" x="1439.5" y="-10.8" font-family="Times,serif" font-size="24.00">3.69s (8.74%)</text>
</a>
</g>
</g>
<!-- N18 -->
<g id="node18" class="node">
<title>N18</title>
<g id="a_node18"><a xlink:title="github.com/ii64/gouring.(*SQEntry).Reset (1.73s)">
<polygon fill="#edebe8" stroke="#b2a48d" points="149,-540.5 0,-540.5 0,-448.5 149,-448.5 149,-540.5"></polygon>
<text text-anchor="middle" x="74.5" y="-521.3" font-family="Times,serif" font-size="19.00">gouring</text>
<text text-anchor="middle" x="74.5" y="-500.3" font-family="Times,serif" font-size="19.00">(*SQEntry)</text>
<text text-anchor="middle" x="74.5" y="-479.3" font-family="Times,serif" font-size="19.00">Reset</text>
<text text-anchor="middle" x="74.5" y="-458.3" font-family="Times,serif" font-size="19.00">1.73s (4.10%)</text>
</a>
</g>
</g>
<!-- N12&#45;&gt;N18 -->
<g id="edge23" class="edge">
<title>N12-&gt;N18</title>
<g id="a_edge23"><a xlink:title="github.com/ii64/gouring/queue.(*Queue)._getSQEntry -> github.com/ii64/gouring.(*SQEntry).Reset (1.73s)">
<path fill="none" stroke="#b2a48d" d="M97.18,-621.9C93.04,-598.84 88.4,-572.95 84.39,-550.64"></path>
<polygon fill="#b2a48d" stroke="#b2a48d" points="87.81,-549.88 82.6,-540.66 80.92,-551.12 87.81,-549.88"></polygon>
</a>
</g>
<g id="a_edge23-label"><a xlink:title="github.com/ii64/gouring/queue.(*Queue)._getSQEntry -> github.com/ii64/gouring.(*SQEntry).Reset (1.73s)">
<text text-anchor="middle" x="115.5" y="-580.3" font-family="Times,serif" font-size="14.00"> 1.73s</text>
</a>
</g>
</g>
<!-- N13&#45;&gt;N7 -->
<g id="edge16" class="edge">
<title>N13-&gt;N7</title>
<g id="a_edge16"><a xlink:title="runtime.execute -> runtime.casgstatus (2.41s)">
<path fill="none" stroke="#b29c7f" d="M866,-446.24C853.27,-430.2 838.88,-412.08 825.5,-395.22"></path>
<polygon fill="#b29c7f" stroke="#b29c7f" points="827.99,-392.72 819.03,-387.06 822.5,-397.07 827.99,-392.72"></polygon>
</a>
</g>
<g id="a_edge16-label"><a xlink:title="runtime.execute -> runtime.casgstatus (2.41s)">
<text text-anchor="middle" x="867.5" y="-408.8" font-family="Times,serif" font-size="14.00"> 2.41s</text>
</a>
</g>
</g>
<!-- N14 -->
<g id="node14" class="node">
<title>N14</title>
<g id="a_node14"><a xlink:title="runtime.lock2 (3.08s)">
<polygon fill="#ede9e4" stroke="#b29471" points="1720,-83 1549,-83 1549,-3 1720,-3 1720,-83"></polygon>
<text text-anchor="middle" x="1634.5" y="-61.4" font-family="Times,serif" font-size="22.00">runtime</text>
<text text-anchor="middle" x="1634.5" y="-37.4" font-family="Times,serif" font-size="22.00">lock2</text>
<text text-anchor="middle" x="1634.5" y="-13.4" font-family="Times,serif" font-size="22.00">3.08s (7.30%)</text>
</a>
</g>
</g>
<!-- N15&#45;&gt;N10 -->
<g id="edge27" class="edge">
<title>N15-&gt;N10</title>
<g id="a_edge27"><a xlink:title="runtime.checkTimers -> runtime.nanotime (1.14s)">
<path fill="none" stroke="#b2aa9a" d="M929.04,-294.84C901.08,-273.14 866.19,-246.06 837.04,-223.44"></path>
<polygon fill="#b2aa9a" stroke="#b2aa9a" points="839.03,-220.55 828.98,-217.18 834.74,-226.08 839.03,-220.55"></polygon>
</a>
</g>
<g id="a_edge27-label"><a xlink:title="runtime.checkTimers -> runtime.nanotime (1.14s)">
<text text-anchor="middle" x="913" y="-253.8" font-family="Times,serif" font-size="14.00"> 1.14s</text>
<text text-anchor="middle" x="913" y="-238.8" font-family="Times,serif" font-size="14.00"> (inline)</text>
</a>
</g>
</g>
<!-- N29 -->
<g id="node29" class="node">
<title>N29</title>
<g id="a_node29"><a xlink:title="runtime.unlockWithRank (3.72s)">
<polygon fill="#ede8e2" stroke="#b28c63" points="1489.5,-203 1389.5,-203 1389.5,-151 1489.5,-151 1489.5,-203"></polygon>
<text text-anchor="middle" x="1439.5" y="-191" font-family="Times,serif" font-size="10.00">runtime</text>
<text text-anchor="middle" x="1439.5" y="-180" font-family="Times,serif" font-size="10.00">unlockWithRank</text>
<text text-anchor="middle" x="1439.5" y="-169" font-family="Times,serif" font-size="10.00">0.03s (0.071%)</text>
<text text-anchor="middle" x="1439.5" y="-158" font-family="Times,serif" font-size="10.00">of 3.72s (8.82%)</text>
</a>
</g>
</g>
<!-- N16&#45;&gt;N29 -->
<g id="edge11" class="edge">
<title>N16-&gt;N29</title>
<g id="a_edge11"><a xlink:title="runtime.unlock -> runtime.unlockWithRank (3.72s)">
<path fill="none" stroke="#b28c63" d="M1439.5,-308.94C1439.5,-283.01 1439.5,-242.31 1439.5,-213.17"></path>
<polygon fill="#b28c63" stroke="#b28c63" points="1443,-213 1439.5,-203 1436,-213 1443,-213"></polygon>
</a>
</g>
<g id="a_edge11-label"><a xlink:title="runtime.unlock -> runtime.unlockWithRank (3.72s)">
<text text-anchor="middle" x="1461.5" y="-246.3" font-family="Times,serif" font-size="14.00"> 3.72s</text>
</a>
</g>
</g>
<!-- N17 -->
<g id="node17" class="node">
<title>N17</title>
<g id="a_node17"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).sqFlush (2.04s)">
<polygon fill="#edeae7" stroke="#b2a187" points="750,-551 577,-551 577,-438 750,-438 750,-551"></polygon>
<text text-anchor="middle" x="663.5" y="-531.8" font-family="Times,serif" font-size="19.00">queue</text>
<text text-anchor="middle" x="663.5" y="-510.8" font-family="Times,serif" font-size="19.00">(*Queue)</text>
<text text-anchor="middle" x="663.5" y="-489.8" font-family="Times,serif" font-size="19.00">sqFlush</text>
<text text-anchor="middle" x="663.5" y="-468.8" font-family="Times,serif" font-size="19.00">1.86s (4.41%)</text>
<text text-anchor="middle" x="663.5" y="-447.8" font-family="Times,serif" font-size="19.00">of 2.04s (4.83%)</text>
</a>
</g>
</g>
<!-- N31 -->
<g id="node31" class="node">
<title>N31</title>
<g id="a_node31"><a xlink:title="runtime.lockWithRank (3.09s)">
<polygon fill="#ede9e4" stroke="#b29471" points="1641,-201 1548,-201 1548,-153 1641,-153 1641,-201"></polygon>
<text text-anchor="middle" x="1594.5" y="-189.8" font-family="Times,serif" font-size="9.00">runtime</text>
<text text-anchor="middle" x="1594.5" y="-179.8" font-family="Times,serif" font-size="9.00">lockWithRank</text>
<text text-anchor="middle" x="1594.5" y="-169.8" font-family="Times,serif" font-size="9.00">0.01s (0.024%)</text>
<text text-anchor="middle" x="1594.5" y="-159.8" font-family="Times,serif" font-size="9.00">of 3.09s (7.32%)</text>
</a>
</g>
</g>
<!-- N19&#45;&gt;N31 -->
<g id="edge13" class="edge">
<title>N19-&gt;N31</title>
<g id="a_edge13"><a xlink:title="runtime.lock -> runtime.lockWithRank (3.09s)">
<path fill="none" stroke="#b29471" d="M1574.94,-316.71C1578.51,-291.41 1585.22,-243.8 1589.78,-211.5"></path>
<polygon fill="#b29471" stroke="#b29471" points="1593.3,-211.58 1591.23,-201.19 1586.37,-210.6 1593.3,-211.58"></polygon>
</a>
</g>
<g id="a_edge13-label"><a xlink:title="runtime.lock -> runtime.lockWithRank (3.09s)">
<text text-anchor="middle" x="1613" y="-253.8" font-family="Times,serif" font-size="14.00"> 3.09s</text>
<text text-anchor="middle" x="1613" y="-238.8" font-family="Times,serif" font-size="14.00"> (inline)</text>
</a>
</g>
</g>
<!-- N21&#45;&gt;N2 -->
<g id="edge2" class="edge">
<title>N21-&gt;N2</title>
<g id="a_edge2"><a xlink:title="runtime.gosched_m -> runtime.goschedImpl (21.46s)">
<path fill="none" stroke="#b22000" stroke-width="3" d="M1259.5,-1025.88C1259.5,-996.52 1259.5,-952.21 1259.5,-919.38"></path>
<polygon fill="#b22000" stroke="#b22000" stroke-width="3" points="1263,-919.16 1259.5,-909.16 1256,-919.16 1263,-919.16"></polygon>
</a>
</g>
<g id="a_edge2-label"><a xlink:title="runtime.gosched_m -> runtime.goschedImpl (21.46s)">
<text text-anchor="middle" x="1286" y="-973.3" font-family="Times,serif" font-size="14.00"> 21.46s</text>
</a>
</g>
</g>
<!-- N22 -->
<g id="node22" class="node">
<title>N22</title>
<g id="a_node22"><a xlink:title="runtime.nanotime1 (0.81s)">
<polygon fill="#edecea" stroke="#b2ada1" points="1485,-1222 1354,-1222 1354,-1160 1485,-1160 1485,-1222"></polygon>
<text text-anchor="middle" x="1419.5" y="-1205.2" font-family="Times,serif" font-size="16.00">runtime</text>
<text text-anchor="middle" x="1419.5" y="-1187.2" font-family="Times,serif" font-size="16.00">nanotime1</text>
<text text-anchor="middle" x="1419.5" y="-1169.2" font-family="Times,serif" font-size="16.00">0.81s (1.92%)</text>
</a>
</g>
</g>
<!-- N26 -->
<g id="node26" class="node">
<title>N26</title>
<g id="a_node26"><a xlink:title="gogo (0.26s)">
<polygon fill="#edecec" stroke="#b2b1ad" points="1612,-1209 1503,-1209 1503,-1173 1612,-1173 1612,-1209"></polygon>
<text text-anchor="middle" x="1557.5" y="-1194.6" font-family="Times,serif" font-size="13.00">gogo</text>
<text text-anchor="middle" x="1557.5" y="-1180.6" font-family="Times,serif" font-size="13.00">0.26s (0.62%)</text>
</a>
</g>
</g>
<!-- N29&#45;&gt;N11 -->
<g id="edge12" class="edge">
<title>N29-&gt;N11</title>
<g id="a_edge12"><a xlink:title="runtime.unlockWithRank -> runtime.unlock2 (3.69s)">
<path fill="none" stroke="#b28c64" d="M1439.5,-150.86C1439.5,-135.46 1439.5,-115.17 1439.5,-96.41"></path>
<polygon fill="#b28c64" stroke="#b28c64" points="1443,-96.18 1439.5,-86.18 1436,-96.18 1443,-96.18"></polygon>
</a>
</g>
<g id="a_edge12-label"><a xlink:title="runtime.unlockWithRank -> runtime.unlock2 (3.69s)">
<text text-anchor="middle" x="1461.5" y="-107.8" font-family="Times,serif" font-size="14.00"> 3.69s</text>
</a>
</g>
</g>
<!-- N30&#45;&gt;N9 -->
<g id="edge8" class="edge">
<title>N30-&gt;N9</title>
<g id="a_edge8"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetCQEntry -> github.com/ii64/gouring/queue.(*Queue).GetCQEntryWait (5.99s)">
<path fill="none" stroke="#b26b33" d="M347.5,-845.6C347.5,-824.31 347.5,-794.07 347.5,-765.7"></path>
<polygon fill="#b26b33" stroke="#b26b33" points="351,-765.35 347.5,-755.35 344,-765.35 351,-765.35"></polygon>
</a>
</g>
<g id="a_edge8-label"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).GetCQEntry -> github.com/ii64/gouring/queue.(*Queue).GetCQEntryWait (5.99s)">
<text text-anchor="middle" x="369.5" y="-776.8" font-family="Times,serif" font-size="14.00"> 5.99s</text>
</a>
</g>
</g>
<!-- N31&#45;&gt;N14 -->
<g id="edge14" class="edge">
<title>N31-&gt;N14</title>
<g id="a_edge14"><a xlink:title="runtime.lockWithRank -> runtime.lock2 (3.08s)">
<path fill="none" stroke="#b29471" d="M1601.56,-152.7C1606.57,-136.17 1613.48,-113.36 1619.68,-92.91"></path>
<polygon fill="#b29471" stroke="#b29471" points="1623.1,-93.68 1622.65,-83.09 1616.4,-91.65 1623.1,-93.68"></polygon>
</a>
</g>
<g id="a_edge14-label"><a xlink:title="runtime.lockWithRank -> runtime.lock2 (3.08s)">
<text text-anchor="middle" x="1637.5" y="-107.8" font-family="Times,serif" font-size="14.00"> 3.08s</text>
</a>
</g>
</g>
<!-- N32 -->
<g id="node32" class="node">
<title>N32</title>
<g id="a_node32"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).SubmitAndWait (2.05s)">
<polygon fill="#edeae7" stroke="#b2a187" points="680,-715 587,-715 587,-657 680,-657 680,-715"></polygon>
<text text-anchor="middle" x="633.5" y="-703.8" font-family="Times,serif" font-size="9.00">queue</text>
<text text-anchor="middle" x="633.5" y="-693.8" font-family="Times,serif" font-size="9.00">(*Queue)</text>
<text text-anchor="middle" x="633.5" y="-683.8" font-family="Times,serif" font-size="9.00">SubmitAndWait</text>
<text text-anchor="middle" x="633.5" y="-673.8" font-family="Times,serif" font-size="9.00">0.01s (0.024%)</text>
<text text-anchor="middle" x="633.5" y="-663.8" font-family="Times,serif" font-size="9.00">of 2.05s (4.86%)</text>
</a>
</g>
</g>
<!-- N32&#45;&gt;N17 -->
<g id="edge21" class="edge">
<title>N32-&gt;N17</title>
<g id="a_edge21"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).SubmitAndWait -> github.com/ii64/gouring/queue.(*Queue).sqFlush (2.04s)">
<path fill="none" stroke="#b2a187" d="M637.99,-656.63C641.98,-631.46 647.95,-593.73 653.11,-561.11"></path>
<polygon fill="#b2a187" stroke="#b2a187" points="656.58,-561.59 654.69,-551.16 649.67,-560.49 656.58,-561.59"></polygon>
</a>
</g>
<g id="a_edge21-label"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).SubmitAndWait -> github.com/ii64/gouring/queue.(*Queue).sqFlush (2.04s)">
<text text-anchor="middle" x="673.5" y="-580.3" font-family="Times,serif" font-size="14.00"> 2.04s</text>
</a>
</g>
</g>
<!-- N33&#45;&gt;N32 -->
<g id="edge19" class="edge">
<title>N33-&gt;N32</title>
<g id="a_edge19"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).Submit -> github.com/ii64/gouring/queue.(*Queue).SubmitAndWait (2.05s)">
<path fill="none" stroke="#b2a187" d="M551.87,-852.91C567.17,-821.83 595.99,-763.23 614.97,-724.66"></path>
<polygon fill="#b2a187" stroke="#b2a187" points="618.3,-725.83 619.57,-715.31 612.02,-722.74 618.3,-725.83"></polygon>
</a>
</g>
<g id="a_edge19-label"><a xlink:title="github.com/ii64/gouring/queue.(*Queue).Submit -> github.com/ii64/gouring/queue.(*Queue).SubmitAndWait (2.05s)">
<text text-anchor="middle" x="612.5" y="-776.8" font-family="Times,serif" font-size="14.00"> 2.05s</text>
</a>
</g>
</g>
</g>
</svg>
Side by side

After

(image error) Size: 46 KiB

25
core.go
View file

@ -6,11 +6,17 @@ import (
"github.com/pkg/errors"
)
func New(entries uint, params *IOUringParams) (*Ring, error) {
func New(entries uint, params *IOUringParams, options ...Option) (*Ring, error) {
r := &Ring{}
if params != nil {
r.params = *params
r.params = *params // copy
}
// option reconfiguring
for _, opt := range options {
opt(&r.params)
}
var err error
if r.fd, err = setup(r, entries, &r.params); err != nil {
err = errors.Wrap(err, "setup")
@ -19,6 +25,7 @@ func New(entries uint, params *IOUringParams) (*Ring, error) {
return r, nil
}
// Close ring
func (r *Ring) Close() (err error) {
if err = unsetup(r); err != nil {
err = errors.Wrap(err, "close")
@ -33,6 +40,7 @@ func (r *Ring) Close() (err error) {
return
}
// Register
func (r *Ring) Register(opcode UringRegisterOpcode, arg uintptr, nrArg uint) (ret int, err error) {
ret, err = register(r, opcode, arg, nrArg)
if err != nil {
@ -42,6 +50,7 @@ func (r *Ring) Register(opcode UringRegisterOpcode, arg uintptr, nrArg uint) (re
return
}
// Enter
func (r *Ring) Enter(toSubmit, minComplete uint, flags UringEnterFlag, sig *Sigset_t) (ret int, err error) {
ret, err = enter(r, toSubmit, minComplete, flags, sig)
if err != nil {
@ -53,18 +62,22 @@ func (r *Ring) Enter(toSubmit, minComplete uint, flags UringEnterFlag, sig *Sigs
//
// Params
func (r *Ring) Params() *IOUringParams {
return &r.params
}
// Fd of io uring
func (r *Ring) Fd() int {
return r.fd
}
func (r *Ring) SQ() *SQRing {
return &r.sq
// SQ Ring
func (r *Ring) SQ() SQRing {
return r.sq
}
func (r *Ring) CQ() *CQRing {
return &r.cq
// CQ Ring
func (r *Ring) CQ() CQRing {
return r.cq
}

21
core_test.go
View file

@ -23,10 +23,11 @@ func TestCore(t *testing.T) {
sq := ring.SQ()
n := 5
for i := 0; i < n; i++ {
sqTail := *sq.Tail()
sqIdx := sqTail & *sq.RingMask()
sqTail := *sq.Tail
sqIdx := sqTail & *sq.RingMask
sqe := sq.Get(sqIdx)
sqe := &sq.Event[sqIdx]
sqe.Reset()
m := mkdata(i)
@ -37,8 +38,8 @@ func TestCore(t *testing.T) {
sqe.SetOffset(0)
sqe.SetAddr(&m[0])
*sq.Array().Get(sqIdx) = *sq.Head() & *sq.RingMask()
*sq.Tail()++
*sq.Array.Get(sqIdx) = *sq.Head & *sq.RingMask
*sq.Tail++
done, err := ring.Enter(1, 1, IORING_ENTER_GETEVENTS, nil)
assert.NoError(t, err, "ring enter")
@ -47,13 +48,13 @@ func TestCore(t *testing.T) {
// get cq
cq := ring.CQ()
for i := 0; i < int(*cq.Tail()); i++ {
cqHead := *cq.Head()
cqIdx := cqHead & *cq.RingMask()
for i := 0; i < int(*cq.Tail); i++ {
cqHead := *cq.Head
cqIdx := cqHead & *cq.RingMask
cqe := cq.Get(cqIdx)
cqe := cq.Event[cqIdx]
*cq.Head()++
*cq.Head++
t.Logf("CQE %+#v", cqe)
}

45
mem_util.go
View file

@ -1,6 +1,7 @@
package gouring
import (
"reflect"
"syscall"
"unsafe"
@ -18,6 +19,7 @@ func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int6
//go:linkname munmap syscall.munmap
func munmap(addr uintptr, length uintptr) (err error)
// io uring setup
func setup(r *Ring, entries uint, parmas *IOUringParams) (ringFd int, err error) {
var sq = &r.sq
var cq = &r.cq
@ -68,15 +70,14 @@ func setup(r *Ring, entries uint, parmas *IOUringParams) (ringFd int, err error)
r.sqRingPtr = sqRingPtr
r.cqRingPtr = cqRingPtr
//
// SQ
// address Go's ring with base+offset allocated
sq.head = sqRingPtr + uintptr(p.SQOff.Head)
sq.tail = sqRingPtr + uintptr(p.SQOff.Tail)
sq.ringMask = sqRingPtr + uintptr(p.SQOff.RingMask)
sq.ringEntries = sqRingPtr + uintptr(p.SQOff.RingEntries)
sq.flags = sqRingPtr + uintptr(p.SQOff.Flags)
sq.array = uint32Array(sqRingPtr + uintptr(p.SQOff.Array))
sq.Head = (*uint32)(unsafe.Pointer(sqRingPtr + uintptr(p.SQOff.Head)))
sq.Tail = (*uint32)(unsafe.Pointer(sqRingPtr + uintptr(p.SQOff.Tail)))
sq.RingMask = (*uint32)(unsafe.Pointer(sqRingPtr + uintptr(p.SQOff.RingMask)))
sq.RingEntries = (*uint32)(unsafe.Pointer(sqRingPtr + uintptr(p.SQOff.RingEntries)))
sq.Flags = (*uint32)(unsafe.Pointer(sqRingPtr + uintptr(p.SQOff.Flags)))
sq.Array = uint32Array(sqRingPtr + uintptr(p.SQOff.Array)) // non fixed array size, controlled by ring mask
r.sqesPtr, err = mmap(0, uintptr(p.SQEntries*uint32(_sz_sqe)),
syscall.PROT_READ|syscall.PROT_WRITE,
syscall.MAP_SHARED|syscall.MAP_POPULATE,
@ -85,19 +86,31 @@ func setup(r *Ring, entries uint, parmas *IOUringParams) (ringFd int, err error)
err = errors.Wrap(err, "mmap sqes")
return
}
sq.sqes = sqeArray(r.sqesPtr)
//
sq.Event = *(*[]SQEntry)(unsafe.Pointer(&reflect.SliceHeader{
Data: r.sqesPtr,
Len: int(p.SQEntries),
Cap: int(p.SQEntries),
}))
cq.head = cqRingPtr + uintptr(p.CQOff.Head)
cq.tail = cqRingPtr + uintptr(p.CQOff.Tail)
cq.ringMask = cqRingPtr + uintptr(p.CQOff.RingMask)
cq.ringEntries = cqRingPtr + uintptr(p.CQOff.RingEntries)
cq.cqes = cqeArray(cqRingPtr + uintptr(p.CQOff.CQEs))
// CQ
cq.Head = (*uint32)(unsafe.Pointer(cqRingPtr + uintptr(p.CQOff.Head)))
cq.Tail = (*uint32)(unsafe.Pointer(cqRingPtr + uintptr(p.CQOff.Tail)))
cq.RingMask = (*uint32)(unsafe.Pointer(cqRingPtr + uintptr(p.CQOff.RingMask)))
cq.RingEntries = (*uint32)(unsafe.Pointer(cqRingPtr + uintptr(p.CQOff.RingEntries)))
cqesPtr := cqRingPtr + uintptr(p.CQOff.CQEs)
cq.Event = *(*[]CQEntry)(unsafe.Pointer(&reflect.SliceHeader{
Data: cqesPtr,
Len: int(p.CQEntries),
Cap: int(p.CQEntries),
}))
return
}
// io uring unsetup
func unsetup(r *Ring) (err error) {
if r.sqesPtr != 0 {
if err = munmap(r.sqesPtr, uintptr(r.params.SQEntries)); err != nil {
@ -119,6 +132,7 @@ func unsetup(r *Ring) (err error) {
return
}
// io uring register fd
func register(r *Ring, opcode UringRegisterOpcode, arg uintptr, nrArg uint) (ret int, err error) {
if ret, err = io_uring_register(r.fd, opcode, arg, nrArg); err != nil {
err = errors.Wrap(err, "io_uring_register")
@ -127,6 +141,7 @@ func register(r *Ring, opcode UringRegisterOpcode, arg uintptr, nrArg uint) (ret
return
}
// io uirng enter
func enter(r *Ring, toSubmit, minComplete uint, flags UringEnterFlag, sig *Sigset_t) (ret int, err error) {
if ret, err = io_uring_enter(r.fd, toSubmit, minComplete, uint(flags), sig); err != nil {
err = errors.Wrap(err, "io_uring_enter")

13
options.go Normal file
View file

@ -0,0 +1,13 @@
package gouring
// Option
type Option func(p *IOUringParams)
// SQThread option
func SQThread(cpu, idleMS uint32) Option {
return func(p *IOUringParams) {
p.SQThreadCPU = cpu
p.SQThreadIdle = idleMS
p.Flags |= IORING_SETUP_SQPOLL
}
}

1
queue/helper.go Normal file
View file

@ -0,0 +1 @@
package queue

51
queue/queue.go
View file

@ -20,8 +20,8 @@ type QueueCQEHandler func(cqe *gouring.CQEntry) (err error)
type Queue struct {
ring *gouring.Ring
sq *gouring.SQRing
cq *gouring.CQRing
sq gouring.SQRing
cq gouring.CQRing
sqeHead uint32
sqeTail uint32
@ -59,11 +59,12 @@ func (q *Queue) precheck() error {
//
// SQEntry ptr returned is passed by value
func (q *Queue) _getSQEntry() *gouring.SQEntry {
head := atomic.LoadUint32(q.sq.Head())
head := atomic.LoadUint32(q.sq.Head)
next := q.sqeTail + 1
if (next - head) <= atomic.LoadUint32(q.sq.RingEntries()) {
sqe := q.sq.Get(q.sqeTail & atomic.LoadUint32(q.sq.RingMask()))
if (next - head) <= atomic.LoadUint32(q.sq.RingEntries) {
sqe := &q.sq.Event[q.sqeTail&(*q.sq.RingMask)]
q.sqeTail = next
sqe.Reset()
return sqe
@ -77,6 +78,7 @@ func (q *Queue) GetSQEntry() (sqe *gouring.SQEntry) {
if sqe != nil {
return
}
runtime.Gosched()
}
}
@ -86,27 +88,29 @@ func (q *Queue) sqFallback(d uint32) {
}
func (q *Queue) sqFlush() uint32 {
khead := atomic.LoadUint32(q.sq.Head)
ktail := atomic.LoadUint32(q.sq.Tail)
// if sq head equals sq tail
if q.sqeHead == q.sqeTail {
return atomic.LoadUint32(q.sq.Tail()) - atomic.LoadUint32(q.sq.Head())
return ktail - khead
}
ktail := atomic.LoadUint32(q.sq.Tail())
for toSubmit := q.sqeTail - q.sqeHead; toSubmit > 0; toSubmit-- {
*q.sq.Array().Get(ktail & (*q.sq.RingMask())) = q.sqeHead & (*q.sq.RingMask())
*q.sq.Array.Get(ktail & (*q.sq.RingMask)) = q.sqeHead & (*q.sq.RingMask)
ktail++
q.sqeHead++
}
atomic.StoreUint32(q.sq.Tail(), ktail)
return ktail - *q.sq.Head()
atomic.StoreUint32(q.sq.Tail, ktail)
return ktail - khead
}
func (q *Queue) isNeedEnter(flags *uint32) bool {
if (q.ring.Params().Features & gouring.IORING_SETUP_SQPOLL) > 0 {
if (q.ring.Params().Flags & gouring.IORING_SETUP_SQPOLL) == 0 {
return true
}
if q.sq.IsNeedWakeup() {
*flags |= gouring.IORING_SQ_NEED_WAKEUP
*flags |= gouring.IORING_ENTER_SQ_WAKEUP
return true
}
return false
@ -125,6 +129,7 @@ func (q *Queue) SubmitAndWait(waitNr uint) (ret int, err error) {
var flags uint32
if !q.isNeedEnter(&flags) || submitted == 0 {
ret = int(submitted)
return
}
@ -139,16 +144,16 @@ func (q *Queue) SubmitAndWait(waitNr uint) (ret int, err error) {
//
func (q *Queue) cqPeek() (cqe *gouring.CQEntry) {
head := atomic.LoadUint32(q.cq.Head())
if head != atomic.LoadUint32(q.cq.Tail()) {
cqe = q.cq.Get(head & atomic.LoadUint32(q.cq.RingMask()))
khead := atomic.LoadUint32(q.cq.Head)
if khead != atomic.LoadUint32(q.cq.Tail) {
cqe = &q.cq.Event[khead&atomic.LoadUint32(q.cq.RingMask)]
}
return
}
func (q *Queue) cqAdvance(d uint32) {
if d != 0 {
atomic.AddUint32(q.cq.Head(), d) // mark readed
atomic.AddUint32(q.cq.Head, d) // mark readed
}
}
@ -162,7 +167,7 @@ func (q *Queue) GetCQEntryWait(wait bool, waitNr uint) (cqe *gouring.CQEntry, er
if err = q.precheck(); err != nil {
return
}
var tryPeeks int
// var tryPeeks int
for {
if cqe = q.cqPeek(); cqe != nil {
q.cqAdvance(1)
@ -180,17 +185,17 @@ func (q *Queue) GetCQEntryWait(wait bool, waitNr uint) (cqe *gouring.CQEntry, er
}
if q.sq.IsCQOverflow() {
_, err = q.ring.Enter(0, waitNr, gouring.IORING_ENTER_GETEVENTS, nil)
_, err = q.ring.Enter(0, 0, gouring.IORING_ENTER_GETEVENTS, nil)
if err != nil {
return
}
continue
}
if tryPeeks++; tryPeeks < 3 {
runtime.Gosched()
continue
}
// if tryPeeks++; tryPeeks < 3 {
runtime.Gosched()
// continue
// }
// implement interrupt
}
}

146
queue/queue_test.go
View file

@ -7,6 +7,7 @@ import (
"syscall"
"testing"
"time"
"unsafe"
"github.com/ii64/gouring"
"github.com/stretchr/testify/assert"
@ -25,6 +26,66 @@ func mkdata(i int) []byte {
return []byte("queue pls" + strings.Repeat("!", i) + fmt.Sprintf("%d", i) + "\n")
}
func TestQueueSQPoll(t *testing.T) {
ring, err := gouring.New(256, &gouring.IOUringParams{
Flags: gouring.IORING_SETUP_SQPOLL,
SQThreadIdle: 70 * 1000,
})
assert.NoError(t, err, "create ring")
defer func() {
err := ring.Close()
assert.NoError(t, err, "close ring")
}()
N := 64 + 64
var wg sync.WaitGroup
btests := [][]byte{}
for i := 0; i < N; i++ {
btests = append(btests, mkdata(i))
}
wg.Add(N)
// create new queue
q := New(ring)
defer func() {
err := q.Close()
assert.NoError(t, err, "close queue")
}()
//
go func() {
for i, b := range btests {
sqe := q.GetSQEntry()
sqe.UserData = uint64(i)
// sqe.Flags = gouring.IOSQE_IO_DRAIN
write(sqe, syscall.Stdout, b)
if (i+1)%2 == 0 {
n, err := q.Submit()
assert.NoError(t, err, "queue submit")
// assert.Equal(t, 2, n, "submit count mismatch") // may varies due to kernel thread consumng submission queue process time
fmt.Printf("submitted %d\n", n)
}
}
}()
go func() {
q.Run(true, func(cqe *gouring.CQEntry) (err error) {
defer wg.Done()
fmt.Printf("cqe: %+#v\n", cqe)
assert.Condition(t, func() (success bool) {
return cqe.UserData < uint64(len(btests))
}, "userdata is set with the btest index")
assert.Conditionf(t, func() (success bool) {
return len(btests[cqe.UserData]) == int(cqe.Res)
}, "OP_WRITE result mismatch: %+#v", cqe)
return nil
})
}()
wg.Wait()
}
func TestQueue(t *testing.T) {
ring, err := gouring.New(256, nil)
assert.NoError(t, err, "create ring")
@ -43,7 +104,13 @@ func TestQueue(t *testing.T) {
// create new queue
q := New(ring)
defer q.Close()
defer func() {
err := q.Close()
assert.NoError(t, err, "close queue")
}()
//
go func() {
for i, b := range btests {
sqe := q.GetSQEntry()
@ -53,7 +120,7 @@ func TestQueue(t *testing.T) {
if (i+1)%2 == 0 {
n, err := q.Submit()
assert.NoError(t, err, "queue submit")
assert.Equal(t, n, 2, "submit count mismatch")
assert.Equal(t, 2, n, "submit count mismatch")
fmt.Printf("submitted %d\n", n)
}
}
@ -85,7 +152,12 @@ func TestQueuePolling(t *testing.T) {
}()
q := New(ring)
defer q.Close()
defer func() {
err := q.Close()
assert.NoError(t, err, "close queue")
}()
// test data
var tb = []byte("write me on stdout\n")
var tu uint64 = 0xfafa
@ -117,3 +189,71 @@ func TestQueuePolling(t *testing.T) {
t.Fail()
}
}
//
var (
Entries = 512
ring *gouring.Ring
q *Queue
)
func init() {
var err error
ring, err = gouring.New(uint(Entries), nil)
if err != nil {
panic(err)
}
q = New(ring)
}
func BenchmarkQueueBatchingNOP(b *testing.B) {
var sqe *gouring.SQEntry
for j := 0; j < b.N; j++ {
for i := 0; i < Entries; i++ {
sqe = q.GetSQEntry()
sqe.Opcode = gouring.IORING_OP_NOP
sqe.UserData = uint64(i)
}
n, err := q.SubmitAndWait(uint(Entries))
assert.NoError(b, err, "submit")
assert.Equal(b, Entries, n, "submit result entries")
for i := 0; i < Entries; i++ {
v := uint64(i)
cqe, err := q.GetCQEntry(true)
assert.NoError(b, err, "cqe wait error")
assert.Equal(b, int32(0), cqe.Res)
assert.Equal(b, v, cqe.UserData)
}
}
}
//
var (
_sqe StructTest
_sz_sqe = unsafe.Sizeof(_sqe)
_sqe_mm = make([]byte, _sz_sqe)
m = &StructTest{}
)
type StructTest = gouring.SQEntry
func BenchmarkSetPtrVal(b *testing.B) {
for i := 0; i < b.N; i++ {
*m = _sqe
}
}
func BenchmarkSetPtrValEmpty(b *testing.B) {
for i := 0; i < b.N; i++ {
*m = StructTest{}
}
}
func BenchmarkSetPtrCpy(b *testing.B) {
for i := 0; i < b.N; i++ {
copy(*(*[]byte)(unsafe.Pointer(m)), _sqe_mm)
}
}

100
ring.go
View file

@ -20,48 +20,20 @@ type Ring struct {
//-- SQ
type SQRing struct {
head uintptr
tail uintptr
ringMask uintptr
ringEntries uintptr
flags uintptr
array uint32Array
sqes sqeArray
}
func (sq SQRing) Get(idx uint32) *SQEntry {
if uintptr(idx) >= uintptr(*sq.RingEntries()) {
return nil
}
return sq.sqes.Get(uintptr(idx))
}
func (sq SQRing) Head() *uint32 {
return (*uint32)(unsafe.Pointer(sq.head))
}
func (sq SQRing) Tail() *uint32 {
return (*uint32)(unsafe.Pointer(sq.tail))
}
func (sq SQRing) RingMask() *uint32 {
return (*uint32)(unsafe.Pointer(sq.ringMask))
}
func (sq SQRing) RingEntries() *uint32 {
return (*uint32)(unsafe.Pointer(sq.ringEntries))
}
func (sq SQRing) Flags() *uint32 {
return (*uint32)(unsafe.Pointer(sq.flags))
}
func (sq SQRing) Array() uint32Array {
return sq.array
}
func (sq SQRing) Event() sqeArray {
return sq.sqes
Head *uint32
Tail *uint32
RingMask *uint32
RingEntries *uint32
Flags *uint32
Array uint32Array
Event []SQEntry
}
func (sq SQRing) IsCQOverflow() bool {
return atomic.LoadUint32(sq.Flags())&IORING_SQ_CQ_OVERFLOW > 0
return atomic.LoadUint32(sq.Flags)&IORING_SQ_CQ_OVERFLOW > 0
}
func (sq SQRing) IsNeedWakeup() bool {
return atomic.LoadUint32(sq.Flags())&IORING_SQ_NEED_WAKEUP > 0
return atomic.LoadUint32(sq.Flags)&IORING_SQ_NEED_WAKEUP > 0
}
//
@ -75,57 +47,13 @@ func (a uint32Array) Set(idx uint32, v uint32) {
atomic.StoreUint32(a.Get(idx), v)
}
type sqeArray uintptr
func (sa sqeArray) Get(idx uintptr) *SQEntry {
return (*SQEntry)(unsafe.Pointer(uintptr(sa) + idx*_sz_sqe))
}
func (sa sqeArray) Set(idx uintptr, v SQEntry) {
*sa.Get(idx) = v
}
//
//-- CQ
type CQRing struct {
head uintptr
tail uintptr
ringMask uintptr
ringEntries uintptr
cqes cqeArray
}
func (cq CQRing) Get(idx uint32) *CQEntry {
if uintptr(idx) >= uintptr(*cq.RingEntries()) { // avoid lookup overflow
return nil
}
return cq.cqes.Get(uintptr(idx))
}
func (cq CQRing) Head() *uint32 {
return (*uint32)(unsafe.Pointer(cq.head))
}
func (cq CQRing) Tail() *uint32 {
return (*uint32)(unsafe.Pointer(cq.tail))
}
func (cq CQRing) RingMask() *uint32 {
return (*uint32)(unsafe.Pointer(cq.ringMask))
}
func (cq CQRing) RingEntries() *uint32 {
return (*uint32)(unsafe.Pointer(cq.ringEntries))
}
func (cq CQRing) Event() cqeArray {
return cq.cqes
}
//
type cqeArray uintptr
func (ca cqeArray) Get(idx uintptr) *CQEntry {
return (*CQEntry)(unsafe.Pointer(uintptr(ca) + idx*_sz_cqe))
}
func (ca cqeArray) Set(idx uintptr, v CQEntry) {
*ca.Get(idx) = v
Head *uint32
Tail *uint32
RingMask *uint32
RingEntries *uint32
Event []CQEntry
}

79
ring_entry.go
View file

@ -17,27 +17,79 @@ var (
//-- SQEntry
type SQEntry struct {
// type of operation for this sqe
Opcode UringOpcode
Flags UringSQEFlag
// IOSQE_ flags
Flags UringSQEFlag
// ioprio for the request
Ioprio uint16
Fd int32
off__addr2 uint64 // union { off, addr2 }
addr__splice_off_in uint64 // union { addr, splice_off_in }
// file descriptor to do IO on
Fd int32
/* union {
off, // offset into file
addr2;
} */
off__addr2 uint64
/* union {
addr, // pointer to buffer or iovecs
splice_off_in
} */
addr__splice_off_in uint64
// buffer size or number iovecs
Len uint32
opcode__flags_events uint32 // union of events and flags for opcode
/* union of events and flags for Opcode
union {
__kernel_rwf_t rw_flags;
__u32 fsync_flags;
__u16 poll_events; // compatibility
__u32 poll32_events; // word-reversed for BE
__u32 sync_range_flags;
__u32 msg_flags;
__u32 timeout_flags;
__u32 accept_flags;
__u32 cancel_flags;
__u32 open_flags;
__u32 statx_flags;
__u32 fadvise_advice;
__u32 splice_flags;
__u32 rename_flags;
__u32 unlink_flags;
__u32 hardlink_flags;
__u32 xattr_flags;
} */
opcode__flags_events uint32
// data to be passed back at completion time
UserData uint64
buf__index_group uint16 // union {buf_index, buf_group}
/* pack this to avoid bogus arm OABI complaints
union {
// index into fixed buffers, if used
__u16 buf_index;
// for grouped buffer selection
__u16 buf_group;
} __attribute__((packed)); */
buf__index_group uint16
// personality to use, if used
Personality uint16
splice_fd_in__file_index int32 // union { __s32 splice_fd_in, __u32 file_index }
/* -
union {
__s32 splice_fd_in;
__u32 file_index;
} */
splice_fd_in__file_index int32
pad2 [2]uint64
addr3 uint64
pad2 [1]uint64
}
func (sqe *SQEntry) Offset() *uint64 {
@ -84,10 +136,17 @@ func (sqe *SQEntry) FileIndex() *uint32 {
return (*uint32)(unsafe.Pointer(&sqe.splice_fd_in__file_index))
}
func (sqe *SQEntry) Addr3() *uint64 {
return (*uint64)(unsafe.Pointer(&sqe.addr3))
}
func (sqe *SQEntry) SetAddr3(v interface{}) {
*sqe.Addr3() = (uint64)(reflect.ValueOf(v).Pointer())
}
//
func (sqe *SQEntry) Reset() {
*sqe = _sqe
*sqe = SQEntry{}
}
//-- CQEntry
@ -99,5 +158,5 @@ type CQEntry struct {
}
func (cqe *CQEntry) Reset() {
*cqe = _cqe
*cqe = CQEntry{}
}

19
syscall/epoll.go Normal file
View file

@ -0,0 +1,19 @@
package syscall
import (
"syscall"
"unsafe"
"github.com/ii64/gouring"
)
var _ = syscall.EpollCtl
// EpollCtl
func EpollCtl(sqe *gouring.SQEntry, epfd int, op int, fd int, event *syscall.EpollEvent) {
sqe.Opcode = gouring.IORING_OP_EPOLL_CTL
sqe.Fd = int32(epfd)
*sqe.Addr() = uint64(uintptr(unsafe.Pointer(event)))
sqe.Len = uint32(op)
*sqe.Offset() = uint64(fd)
}

11
syscall/helper.go Normal file
View file

@ -0,0 +1,11 @@
package syscall
import (
"syscall"
_ "unsafe"
)
var _zero uintptr
//go:linkname anyToSockaddr syscall.anyToSockaddr
func anyToSockaddr(rsa *syscall.RawSockaddrAny) (syscall.Sockaddr, error)

64
syscall/io.go Normal file
View file

@ -0,0 +1,64 @@
package syscall
import (
"syscall"
"unsafe"
"github.com/ii64/gouring"
)
var (
_ = syscall.Accept
_ = syscall.Read
_ = syscall.Write
_ = syscall.Close
)
// Accept
func Accept(sqe *gouring.SQEntry, lisFd int, raw *syscall.RawSockaddrAny) {
sqe.Opcode = gouring.IORING_OP_ACCEPT
sqe.Fd = int32(lisFd)
var len uintptr = syscall.SizeofSockaddrAny
*sqe.Addr2() = uint64(uintptr(unsafe.Pointer(&len)))
*sqe.Addr() = uint64(uintptr(unsafe.Pointer(raw)))
}
// Read
func Read(sqe *gouring.SQEntry, fd int, b []byte) {
sqe.Opcode = gouring.IORING_OP_READ
sqe.Fd = int32(fd)
sqe.Len = uint32(len(b))
*sqe.Addr() = uint64(uintptr(unsafe.Pointer(&b[0])))
}
// Readv
func Readv(sqe *gouring.SQEntry, fd int, iovs []syscall.Iovec) {
sqe.Opcode = gouring.IORING_OP_READV
sqe.Fd = int32(fd)
sqe.Len = uint32(len(iovs))
*sqe.Addr() = uint64(uintptr(unsafe.Pointer(&iovs[0])))
}
// Write
func Write(sqe *gouring.SQEntry, fd int, b []byte) {
sqe.Opcode = gouring.IORING_OP_WRITE
sqe.Fd = int32(fd)
sqe.Len = uint32(len(b))
*sqe.Addr() = uint64(uintptr(unsafe.Pointer(&b[0])))
}
// Writev
func Writev(sqe *gouring.SQEntry, fd int, iovs []syscall.Iovec) {
sqe.Opcode = gouring.IORING_OP_WRITEV
sqe.Fd = int32(fd)
sqe.Len = uint32(len(iovs))
*sqe.Addr() = uint64(uintptr(unsafe.Pointer(&iovs[0])))
}
// Close
func Close(sqe *gouring.SQEntry, fd int) {
sqe.Opcode = gouring.IORING_OP_CLOSE
sqe.Fd = int32(fd)
}

166
syscall/io_test.go Normal file
View file

@ -0,0 +1,166 @@
package syscall
import (
"bytes"
"fmt"
"os"
"syscall"
"testing"
"time"
"github.com/ii64/gouring"
"github.com/ii64/gouring/queue"
"github.com/stretchr/testify/assert"
)
func initRing(t *testing.T) (ring *gouring.Ring, q *queue.Queue, cq chan *gouring.CQEntry) {
ring, err := gouring.New(128, nil)
if err != nil {
panic(err)
}
q = queue.New(ring)
cq = make(chan *gouring.CQEntry)
go q.RunPoll(true, 1, func(cqe *gouring.CQEntry) (err error) {
fmt.Printf("got cqe: %+#v\n", cqe)
cq <- cqe
return nil
})
go func() {
<-time.After(5 * time.Second)
t.Logf("timeout")
t.Fail()
}()
return
}
// func TestAccept(t *testing.T) {
// sqe := q.GetSQEntry()
// }
func TestRead(t *testing.T) {
ring, q, cq := initRing(t)
defer q.Close()
defer ring.Close()
var f *os.File
var err error
f, err = os.Open("/dev/urandom")
assert.NoError(t, err, "urandom")
fd := f.Fd()
defer f.Close()
b := make([]byte, 25)
ud := uint64(gouring.IORING_OP_READ)
sqe := q.GetSQEntry()
Read(sqe, int(fd), b)
sqe.UserData = ud
ret, err := q.Submit()
assert.NoError(t, err)
assert.Equal(t, 1, ret, "mismatch submit return value")
cqe := <-cq
assert.Equal(t, ud, cqe.UserData)
assert.Equal(t, len(b), int(cqe.Res))
}
func TestReadv(t *testing.T) {
ring, q, cq := initRing(t)
defer q.Close()
defer ring.Close()
var f *os.File
var err error
f, err = os.Open("/dev/urandom")
assert.NoError(t, err, "urandom")
fd := f.Fd()
defer f.Close()
bs := [][]byte{}
bN := 25
iovs := []syscall.Iovec{}
iovN := 5
for i := 0; i < iovN; i++ {
b := make([]byte, bN)
bs = append(bs, b)
iovs = append(iovs, syscall.Iovec{
Base: &b[0],
Len: uint64(len(b)),
})
}
ud := uint64(gouring.IORING_OP_READV)
sqe := q.GetSQEntry()
Readv(sqe, int(fd), iovs)
sqe.UserData = ud
ret, err := q.Submit()
assert.NoError(t, err)
assert.Equal(t, 1, ret, "mismatch submit return value")
cqe := <-cq
assert.Equal(t, ud, cqe.UserData)
assert.Equal(t, bN*iovN, int(cqe.Res))
eb := make([]byte, bN)
for i := 0; i < iovN; i++ {
if bytes.Compare(bs[i], eb) == 0 {
assert.NotEqual(t, eb, bs[i], "read urandom")
}
}
}
func TestWrite(t *testing.T) {
ring, q, cq := initRing(t)
defer q.Close()
defer ring.Close()
wr := "hello"
ud := uint64(gouring.IORING_OP_WRITE)
sqe := q.GetSQEntry()
Write(sqe, syscall.Stdout, []byte(wr))
sqe.UserData = ud
ret, err := q.Submit()
assert.NoError(t, err)
assert.Equal(t, 1, ret, "mismatch submit return value")
cqe := <-cq
assert.Equal(t, ud, cqe.UserData)
assert.Equal(t, len(wr), int(cqe.Res))
}
func TestWritev(t *testing.T) {
ring, q, cq := initRing(t)
defer q.Close()
defer ring.Close()
wr := "hello\n"
bs := [][]byte{}
iovs := []syscall.Iovec{}
iovN := 5
for i := 0; i < iovN; i++ {
b := []byte(wr)
bs = append(bs, b)
iovs = append(iovs, syscall.Iovec{
Base: &b[0],
Len: uint64(len(b)),
})
}
ud := uint64(gouring.IORING_OP_WRITEV)
sqe := q.GetSQEntry()
Writev(sqe, syscall.Stdout, iovs)
sqe.UserData = ud
ret, err := q.Submit()
assert.NoError(t, err)
assert.Equal(t, 1, ret, "mismatch submit retrun value")
cqe := <-cq
assert.Equal(t, ud, cqe.UserData)
assert.Equal(t, len(wr)*iovN, int(cqe.Res))
}

25
syscall/mem.go Normal file
View file

@ -0,0 +1,25 @@
package syscall
import (
"syscall"
"unsafe"
"github.com/ii64/gouring"
)
var _ = syscall.Madvise
// Madvise
func Madvise(sqe *gouring.SQEntry, b []byte, advice int) {
var ptr unsafe.Pointer
if len(b) > 0 {
ptr = unsafe.Pointer(&b[0])
} else {
ptr = unsafe.Pointer(&_zero)
}
sqe.Opcode = gouring.IORING_OP_MADVISE
sqe.Fd = -1
*sqe.Addr() = uint64(uintptr(ptr))
sqe.Len = uint32(len(b))
*sqe.Offset() = 0
}

21
sysnum.go
View file

@ -6,14 +6,14 @@ import (
)
const (
// uring syscall no.
SYS_IO_URING_SETUP = 425
SYS_IO_URING_ENTER = 426
SYS_IO_URING_REGISTER = 427
)
//go:linkname errnoErr syscall.errnoErr
func errnoErr(e syscall.Errno) error
// SQOffsets represents submission queue
type SQOffsets struct {
Head uint32
Tail uint32
@ -26,6 +26,7 @@ type SQOffsets struct {
Resv2 uint64
}
// CQOffsets represents completion queue
type CQOffsets struct {
Head uint32
Tail uint32
@ -38,6 +39,7 @@ type CQOffsets struct {
Resv2 uint64
}
// IOUringParams io_uring_setup params
type IOUringParams struct {
SQEntries uint32 // sq_entries
CQEntries uint32 // cq_entries
@ -54,33 +56,36 @@ type IOUringParams struct {
}
//go:inline
func io_uring_setup(entries uint, params *IOUringParams) (fd int, err error) {
func io_uring_setup(entries uint, params *IOUringParams) (ret int, err error) {
r1, _, e1 := syscall.Syscall(SYS_IO_URING_SETUP, uintptr(entries), uintptr(unsafe.Pointer(params)), 0)
fd = int(r1)
ret = int(r1)
if e1 != 0 {
err = errnoErr(e1)
err = syscall.Errno(e1)
}
return
}
//go:inline
func io_uring_enter(ringFd int, toSubmit uint, minComplete uint, flags uint, sig *Sigset_t) (ret int, err error) {
return io_uring_enter2(ringFd, toSubmit, minComplete, flags, sig, NSIG/8)
}
//go:inline
func io_uring_enter2(ringFd int, toSubmit uint, minComplete uint, flags uint, sig *Sigset_t, sz int) (ret int, err error) {
r1, _, e1 := syscall.Syscall6(SYS_IO_URING_ENTER, uintptr(ringFd), uintptr(toSubmit), uintptr(minComplete), uintptr(flags), uintptr(unsafe.Pointer(sig)), uintptr(sz))
ret = int(r1)
if e1 != 0 {
err = errnoErr(e1)
err = syscall.Errno(e1)
}
return
}
//go:inline
func io_uring_register(ringFd int, opcode uint /*const*/, arg uintptr, nrArgs uint) (ret int, err error) {
r1, _, e1 := syscall.Syscall6(SYS_IO_URING_REGISTER, uintptr(ringFd), uintptr(opcode), arg, uintptr(nrArgs), 0, 0)
ret = int(r1)
if e1 != 0 {
err = errnoErr(e1)
err = syscall.Errno(e1)
}
return
}