private IScriptRunner GetOrCreateScriptRunner(IParameter[] parameters, string scriptCode, ScriptingOptions Options)
{
var hostingType = (Options == null) ? HostingType.SharedSandboxAppDomain : Options.HostingType;
AppDomain sandbox = GetOrCreateHostingDomain(hostingType);
// We can return a cached script runner if
// A) there is one (duh...), AND
// B) It does not need to recompile for the given input arguments, AND
// C) the AppDomain in which the script runner is hosted is the same that we would like to use now
if (m_ScriptRunnerCacheInfo != null && !m_ScriptRunnerCacheInfo.ScriptRunner.NeedsRecompilationFor(parameters, scriptCode, Options) && m_ScriptRunnerCacheInfo.HostingDomain == sandbox)
{
Trace.WriteLine("Using cached script runner");
return(m_ScriptRunnerCacheInfo.ScriptRunner);
}
else
{
Trace.WriteLine("Creating new script runner");
TryUnregisterLease();
var scriptRunner = (HostedScriptRunner <TGlobals>)Activator.CreateInstance(sandbox, typeof(HostedScriptRunner <TGlobals>).Assembly.FullName, typeof(HostedScriptRunner <TGlobals>).FullName).Unwrap();
HostingHelper.ClientSponsor.Register(scriptRunner);
this.m_ScriptRunnerCacheInfo = new ScriptRunnerCacheInfo <TGlobals> {
HostingDomain = sandbox, ScriptRunner = scriptRunner
};
return(scriptRunner);
}
}
/// <summary>
/// Tries to unregister the lease of the cached script runner
/// </summary>
private void TryUnregisterLease()
{
if (m_ScriptRunnerCacheInfo != null && m_ScriptRunnerCacheInfo.ScriptRunner != null)
{
HostingHelper.ClientSponsor.Unregister(m_ScriptRunnerCacheInfo.ScriptRunner);
m_ScriptRunnerCacheInfo = null;
}
}