Dmitrii Stepanov
e39378b1c3
To limit memory usage by background flush. Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
27 lines
522 B
Go
27 lines
522 B
Go
package writecache
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import (
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"sync/atomic"
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"testing"
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"github.com/stretchr/testify/require"
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"golang.org/x/sync/errgroup"
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)
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func TestLimiter(t *testing.T) {
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var maxSize uint64 = 10
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var single uint64 = 3
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l := newFlushLimiter(uint64(maxSize))
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var currSize atomic.Int64
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var eg errgroup.Group
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for i := 0; i < 10_000; i++ {
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eg.Go(func() error {
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defer l.release(single)
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defer currSize.Add(-1)
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l.acquire(single)
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require.True(t, currSize.Add(1) <= 3)
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return nil
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})
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}
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require.NoError(t, eg.Wait())
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}
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