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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package common
import (
"sync"
"testing"
)
func TestShardedLocks_ParallelLocksAll(t *testing.T) {
// no asserts
// ensures parallel LockAll does not fall into deadlock
count := 10
sl := NewDefaultShardedLocks()
wg := new(sync.WaitGroup)
wg.Add(count)
for i := 0; i < count; i++ {
go func() {
defer wg.Done()
sl.LockAll()
sl.UnlockAll()
}()
}
wg.Wait()
}
func TestShardedLocks_ParallelRLocksAll(t *testing.T) {
// no asserts
// ensures parallel RLockAll does not fall into deadlock
count := 10
sl := NewDefaultShardedLocks()
wg := new(sync.WaitGroup)
wg.Add(count)
for i := 0; i < count; i++ {
go func() {
defer wg.Done()
sl.RLockAll()
sl.RUnlockAll()
}()
}
wg.Wait()
}
func TestShardedLocks_ParallelLocksAllAndRLocksAll(t *testing.T) {
// no asserts
// ensures parallel LockAll + RLockAll does not fall into deadlock
count := 50
sl := NewDefaultShardedLocks()
wg := new(sync.WaitGroup)
wg.Add(count)
for i := 0; i < count; i++ {
go func(i int) {
defer wg.Done()
if i%2 == 0 {
sl.LockAll()
sl.UnlockAll()
} else {
sl.RLockAll()
sl.RUnlockAll()
}
}(i)
}
wg.Wait()
}
func TestShardedLocks_MixedLocks(t *testing.T) {
// no asserts
// ensures parallel LockAll + RLockAll + Lock + RLock does not fall into deadlock
count := 1000
sl := NewShardedLocks(10)
wg := new(sync.WaitGroup)
wg.Add(count)
for i := 0; i < count; i++ {
go func(i int) {
defer wg.Done()
id := uint64(i)
if i%5 == 0 {
if i%2 == 0 {
sl.LockAll()
sl.UnlockAll()
} else {
sl.RLockAll()
sl.RUnlockAll()
}
} else {
if i%2 == 0 {
sl.Lock(id)
sl.Unlock(id)
} else {
sl.RLock(id)
sl.RUnlock(id)
}
}
}(i)
}
wg.Wait()
}
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