private ScriptModule CompileAndPublishModule(string moduleName, SourceUnit su)
{
Assert.NotNull(moduleName, su);
EnsureModules();
string key = su.Id ?? moduleName;
// check if we've already published this SourceUnit
lock (_modules) {
ScriptModule tmp = GetCachedModuleNoLock(key);
if (tmp != null)
{
return(tmp);
}
}
// compile and initialize the module...
ScriptModule mod = CompileModule(moduleName, su);
lock (_modules) {
// check if someone else compiled it first...
ScriptModule tmp = GetCachedModuleNoLock(key);
if (tmp != null)
{
return(tmp);
}
LoadInfo load;
if (_loading.TryGetValue(key, out load))
{
if (load.Thread == Thread.CurrentThread)
{
return(load.Module);
}
Monitor.Exit(_modules);
try {
lock (load) {
if (!load.Done)
{
if (load.Mre == null)
{
load.Mre = new ManualResetEvent(false);
}
Monitor.Exit(load);
try {
load.Mre.WaitOne();
} finally {
Monitor.Enter(load);
}
}
}
if (load.Module != null)
{
return(load.Module);
}
throw load.Exception;
} finally {
Monitor.Enter(_modules);
}
}
load = new LoadInfo();
load.Module = mod;
load.Thread = Thread.CurrentThread;
_loading[key] = load;
bool success = false;
Monitor.Exit(_modules);
try {
mod.Execute();
success = true;
lock (load) {
load.Done = true;
if (load.Mre != null)
{
load.Mre.Set();
}
}
return(mod);
} catch (Exception e) {
lock (load) {
load.Exception = e;
load.Done = true;
if (load.Mre != null)
{
load.Mre.Set();
}
}
throw;
} finally {
Monitor.Enter(_modules);
_loading.Remove(key);
if (success)
{
_modules[key] = new WeakReference(mod);
}
}
}
}
public void Execute()
{
_module.Execute();
}
