mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-07 20:30:36 -05:00
a9c5133a77
The custom sort functions used from the templates had some subtle data race- and related issues, especially when used in the single page template. This commit fixes this by making copies and protect the read and writes with a RWMutex. The results are cached (it will typically be invoked *number of pages* times with exactly the same data). This is, not surprisingly, also faster: ``` benchmark old ns/op new ns/op delta BenchmarkSortByWeightAndReverse 14228 491 -96.55% benchmark old allocs new allocs delta BenchmarkSortByWeightAndReverse 1 0 -100.00% benchmark old bytes new bytes delta BenchmarkSortByWeightAndReverse 32 0 -100.00% ``` Fixes #1293
60 lines
1.2 KiB
Go
60 lines
1.2 KiB
Go
package hugolib
|
|
|
|
import (
|
|
"fmt"
|
|
"github.com/stretchr/testify/assert"
|
|
"sync"
|
|
"sync/atomic"
|
|
"testing"
|
|
)
|
|
|
|
func TestPageCache(t *testing.T) {
|
|
c1 := newPageCache()
|
|
|
|
changeFirst := func(p Pages) {
|
|
p[0].Description = "changed"
|
|
}
|
|
|
|
var o1 uint64 = 0
|
|
var o2 uint64 = 0
|
|
|
|
var wg sync.WaitGroup
|
|
|
|
var l1 sync.Mutex
|
|
var l2 sync.Mutex
|
|
|
|
var testPageSets []Pages
|
|
|
|
for j := 0; j < 50; j++ {
|
|
testPageSets = append(testPageSets, createSortTestPages(j+1))
|
|
}
|
|
|
|
for i := 0; i < 100; i++ {
|
|
wg.Add(1)
|
|
go func() {
|
|
defer wg.Done()
|
|
for j, pages := range testPageSets {
|
|
msg := fmt.Sprintf("Go %d %d %d %d", i, j, o1, o2)
|
|
l1.Lock()
|
|
p, c := c1.get("k1", pages, nil)
|
|
assert.Equal(t, !atomic.CompareAndSwapUint64(&o1, uint64(j), uint64(j+1)), c, "c1: "+msg)
|
|
l1.Unlock()
|
|
p2, c2 := c1.get("k1", p, nil)
|
|
assert.True(t, c2)
|
|
assert.True(t, probablyEqualPages(p, p2))
|
|
assert.True(t, probablyEqualPages(p, pages))
|
|
assert.NotNil(t, p, msg)
|
|
|
|
l2.Lock()
|
|
p3, c3 := c1.get("k2", pages, changeFirst)
|
|
assert.Equal(t, !atomic.CompareAndSwapUint64(&o2, uint64(j), uint64(j+1)), c3, "c3: "+msg)
|
|
l2.Unlock()
|
|
assert.NotNil(t, p3, msg)
|
|
assert.Equal(t, p3[0].Description, "changed", msg)
|
|
}
|
|
}()
|
|
}
|
|
|
|
wg.Wait()
|
|
|
|
}
|