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working arbitrary track queueing

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This commit is contained in:
minjaesong
2024-07-08 18:06:44 +09:00
parent 657c8051f8
commit 86c6f008f9
4 changed files with 37 additions and 11 deletions
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15
src/net/torvald/terrarum/transaction/Transaction.kt
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@@ -33,6 +33,17 @@ abstract class TransactionListener {
val transactionLockingClass: AtomicReference<Transaction?> = AtomicReference(null)
val transactionLocked: Boolean; get() = (transactionLockingClass.get() != null)
private fun acquireLock(locker: Transaction) {
synchronized(this) {
transactionLockingClass.set(locker)
}
}
private fun releaseLock() {
synchronized(this) {
transactionLockingClass.set(null)
}
}
/**
* Transaction modifies a given state to a new state, then applies the new state to the object.
@@ -47,7 +58,7 @@ abstract class TransactionListener {
val state = getCurrentStatusForTransaction()
val currentLock = transactionLockingClass.get()
if (currentLock == null) {
transactionLockingClass.set(transaction)
acquireLock(transaction)
try {
transaction.start(state)
// if successful:
@@ -62,7 +73,7 @@ abstract class TransactionListener {
transaction.onFailure(e, state)
}
finally {
transactionLockingClass.set(null)
releaseLock()
onFinally()
}
}