If I am using a synchronized hashtable, do I still need to useSyncLock ?

  • Thread starter Thread starter fniles
  • Start date Start date
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fniles

If I am using a synchronized hashtable, do I still need to use
SyncLock ?
Thank you

Friend g_htCommoditys As Hashtable
Friend g_htSyncCommoditys As Hashtable
Friend CommodityLock As New Object

g_htCommoditys = New Hashtable
g_htSyncCommoditys = Hashtable.Synchronized(g_htCommoditys)

SyncLock CommodityLock ---> Is this SyncLock still needed here ?
If Not (g_htSyncCommoditys.Contains(sSymbol)) Then
Dim sCommodity(COMM_MAX) As String
sCommodity(COMM_SYMBOL) = "A"
sCommodity(COMM_OPEN) = "08:30"
g_htSyncCommoditys.Add(sSymbol, sCommodity)
End If
End SyncLock
 
If I am using a synchronized hashtable, do I still need to use
SyncLock ?
Thank you

Friend g_htCommoditys As Hashtable
Friend g_htSyncCommoditys As Hashtable
Friend CommodityLock As New Object

g_htCommoditys = New Hashtable
g_htSyncCommoditys = Hashtable.Synchronized(g_htCommoditys)

SyncLock CommodityLock ---> Is this SyncLock still needed here ?
If Not (g_htSyncCommoditys.Contains(sSymbol)) Then
Dim sCommodity(COMM_MAX) As String
sCommodity(COMM_SYMBOL) = "A"
sCommodity(COMM_OPEN) = "08:30"
g_htSyncCommoditys.Add(sSymbol, sCommodity)
End If
End SyncLock
Click to expand...

According to MSDN docs, yes, you still need to SyncLock your
collection in order to guarentee collection modification prevention
against other threads.

See "Remarks":
http://msdn.microsoft.com/en-us/library/system.collections.hashtable.synchronized.aspx

HTH,

Onur Güzel
 
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