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Changes to TradeBlotter cache

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Sean
2026-02-22 17:27:35 -05:00
parent 02315ab6ac
commit 3bbd539af4
2 changed files with 27 additions and 13 deletions
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1
Cache/PriceCache.cs
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@@ -90,6 +90,7 @@ namespace TradeBlotter.Cache
while(threadRun) while(threadRun)
{ {
Thread.Sleep(quantumInterval); Thread.Sleep(quantumInterval);
if(!threadRun)break;
quantums+=quantumInterval; quantums+=quantumInterval;
if(quantums>cacheRefreshAfter) if(quantums>cacheRefreshAfter)
{ {

29
Cache/SymbolCache.cs
View File

@@ -16,7 +16,8 @@ namespace TradeBlotter.Cache
public class SymbolCache : IDisposable public class SymbolCache : IDisposable
{ {
private List<String> symbolCache=new List<String>(); private List<String> symbolCache=new List<String>();
private Object thisLock=new Object(); private readonly Object thisLock=new Object();
private readonly Object fetchLock = new Object();
private Thread cacheMonitorThread=null; private Thread cacheMonitorThread=null;
private volatile bool threadRun=true; private volatile bool threadRun=true;
private int cacheRefreshAfter=60000; // Invalidate cache after private int cacheRefreshAfter=60000; // Invalidate cache after
@@ -42,12 +43,15 @@ namespace TradeBlotter.Cache
symbolCache=new List<string>(); symbolCache=new List<string>();
} }
} }
public void Dispose() public void Dispose()
{ {
lock(thisLock) lock(thisLock)
{ {
if(null==symbolCacheInstance || false==threadRun)return; if(null==symbolCacheInstance || false==threadRun)return;
threadRun=false; threadRun=false;
symbolCacheInstance=null;
}
if(null!=cacheMonitorThread) if(null!=cacheMonitorThread)
{ {
MDTrace.WriteLine(LogLevel.DEBUG,String.Format("[SymbolCache:Dispose]Thread state is {0}. Joining main thread...",Utility.ThreadStateToString(cacheMonitorThread))); MDTrace.WriteLine(LogLevel.DEBUG,String.Format("[SymbolCache:Dispose]Thread state is {0}. Joining main thread...",Utility.ThreadStateToString(cacheMonitorThread)));
@@ -55,18 +59,26 @@ namespace TradeBlotter.Cache
cacheMonitorThread=null; cacheMonitorThread=null;
MDTrace.WriteLine(LogLevel.DEBUG,"[SymbolCache:Dispose] End."); MDTrace.WriteLine(LogLevel.DEBUG,"[SymbolCache:Dispose] End.");
} }
symbolCacheInstance=null;
}
} }
public List<String> GetSymbols() public List<String> GetSymbols()
{ {
lock(this) lock(thisLock)
{ {
if(0==symbolCache.Count)symbolCache=PricingDA.GetSymbols(); if(symbolCache.Count>0)return new List<string>(symbolCache);
return symbolCache; }
lock(fetchLock)
{
List<String> symbols = PricingDA.GetSymbols();
lock(thisLock)
{
if(symbolCache.Count>0)return new List<string>(symbolCache);
symbolCache=new List<String>(symbols);
return new List<string>(symbols);
} }
} }
}
private void ThreadProc() private void ThreadProc()
{ {
int quantums=0; int quantums=0;
@@ -74,14 +86,15 @@ namespace TradeBlotter.Cache
while(threadRun) while(threadRun)
{ {
Thread.Sleep(quantumInterval); Thread.Sleep(quantumInterval);
if(!threadRun)break;
quantums+=quantumInterval; quantums+=quantumInterval;
if(quantums>cacheRefreshAfter) if(quantums>cacheRefreshAfter)
{ {
quantums=0; quantums=0;
List<String> symbols = PricingDA.GetSymbols();
lock(thisLock) lock(thisLock)
{ {
// symbolCache.Clear(); symbolCache=new List<string>(symbols);
symbolCache=PricingDA.GetSymbols();
} }
} }
} }