dzming.li
A vibe coded tangled fork which supports pijul.
appview/pages: fix concurrent write in dev mode
When in dev mode. Concurrent writes to the template map will cause a
concurrent write panic and crash appview. Quickly moving between pages
can trigger this crash. This is addressed by adding a RWMutex on the
templates. RWMutex allows multiple readers, but only one writer.
Signed-off-by: Ciel <jamie@longest.voyage>
+11
-1
+11
-1
appview/pages/pages.go
+11
-1
appview/pages/pages.go
···
14
14
"os"
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15
"path/filepath"
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16
"strings"
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+
"sync"
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18
18
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"tangled.sh/tangled.sh/core/appview/commitverify"
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20
"tangled.sh/tangled.sh/core/appview/config"
···
39
40
var Files embed.FS
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41
41
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type Pages struct {
42
-
t map[string]*template.Template
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+
mu sync.RWMutex
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+
t map[string]*template.Template
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+
43
46
avatar config.AvatarConfig
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47
dev bool
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48
embedFS embed.FS
···
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59
}
57
60
58
61
p := &Pages{
62
+
mu: sync.RWMutex{},
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63
t: make(map[string]*template.Template),
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64
dev: config.Core.Dev,
61
65
avatar: config.Avatar,
···
147
151
}
148
152
149
153
log.Printf("total templates loaded: %d", len(templates))
154
+
p.mu.Lock()
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+
defer p.mu.Unlock()
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156
p.t = templates
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157
}
152
158
···
207
213
}
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214
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215
// Update the template in the map
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+
p.mu.Lock()
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+
defer p.mu.Unlock()
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218
p.t[name] = tmpl
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219
log.Printf("template reloaded from disk: %s", name)
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220
return nil
···
221
229
}
222
230
}
223
231
232
+
p.mu.RLock()
233
+
defer p.mu.RUnlock()
224
234
tmpl, exists := p.t[templateName]
225
235
if !exists {
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return fmt.Errorf("template not found: %s", templateName)