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This commit is contained in:
Erazem Kokot 2023-10-01 22:56:19 +02:00
parent e988ebce0c
commit e6745799a0
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3 changed files with 11 additions and 19 deletions
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12
examples/atomic-counters/atomic-counters.go
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@ -31,9 +31,7 @@ func main() {
go func() { go func() {
for c := 0; c < 1000; c++ { for c := 0; c < 1000; c++ {
// To atomically increment the counter we use `Add`, // To atomically increment the counter we use `Add`.
// giving it the memory address of our `ops` counter
// with the `&` syntax.
ops.Add(1) ops.Add(1)
} }
@ -44,10 +42,8 @@ func main() {
// Wait until all the goroutines are done. // Wait until all the goroutines are done.
wg.Wait() wg.Wait()
// It's safe to access `ops` now because we know // Reading atomics safely while they are being updated is
// no other goroutine is writing to it. Reading // possible using functions like `Load`, although here it's
// atomics safely while they are being updated is // safe anyway, because no goroutines are writing to 'ops'.
// also possible, using functions like
// `atomic.LoadUint64`.
fmt.Println("ops:", ops.Load()) fmt.Println("ops:", ops.Load())
} }

4
examples/atomic-counters/atomic-counters.hash
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@ -1,2 +1,2 @@
8c87658e3694b98a456c73438c453286fe018c28 806f385f4485c3e9d10fe319744dd58ab77adaaf
5vAUgPMebQw LfAMxMppwL-

14
public/atomic-counters generated
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@ -46,7 +46,7 @@ counters</em> accessed by multiple goroutines.</p>
</td> </td>
<td class="code leading"> <td class="code leading">
<a href="https://go.dev/play/p/5vAUgPMebQw"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" /> <a href="https://go.dev/play/p/LfAMxMppwL-"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
<pre class="chroma"><code><span class="line"><span class="cl"><span class="kn">package</span> <span class="nx">main</span></span></span></code></pre> <pre class="chroma"><code><span class="line"><span class="cl"><span class="kn">package</span> <span class="nx">main</span></span></span></code></pre>
</td> </td>
</tr> </tr>
@ -125,9 +125,7 @@ counter exactly 1000 times.</p>
<tr> <tr>
<td class="docs"> <td class="docs">
<p>To atomically increment the counter we use <code>Add</code>, <p>To atomically increment the counter we use <code>Add</code>.</p>
giving it the memory address of our <code>ops</code> counter
with the <code>&amp;</code> syntax.</p>
</td> </td>
<td class="code leading"> <td class="code leading">
@ -162,11 +160,9 @@ with the <code>&amp;</code> syntax.</p>
<tr> <tr>
<td class="docs"> <td class="docs">
<p>It&rsquo;s safe to access <code>ops</code> now because we know <p>Reading atomics safely while they are being updated is
no other goroutine is writing to it. Reading possible using functions like <code>Load</code>, although here it&rsquo;s
atomics safely while they are being updated is safe anyway, because no goroutines are writing to &lsquo;ops&rsquo;.</p>
also possible, using functions like
<code>atomic.LoadUint64</code>.</p>
</td> </td>
<td class="code"> <td class="code">