public static SafeXmlReaderWriter Get(IScopeProvider scopeProvider, SystemLock xmlLock, XmlDocument xml, Action <XmlDocument> refresh, Action <XmlDocument, bool> apply, bool writer)
{
var scopeContext = scopeProvider.Context;
// no real scope = just create a reader/writer instance
if (scopeContext == null)
{
// obtain exclusive access to xml and create reader/writer
var releaser = xmlLock.Lock();
return(new SafeXmlReaderWriter(releaser, xml, refresh, apply, writer, false));
}
// get or create an enlisted reader/writer
var rw = scopeContext.Enlist(EnlistKey,
() => // creator
{
// obtain exclusive access to xml and create reader/writer
var releaser = xmlLock.Lock();
return(new SafeXmlReaderWriter(releaser, xml, refresh, apply, writer, true));
},
(completed, item) => // action
{
item.DisposeForReal(completed);
}, EnlistPriority);
// ensure it's not already in-use - should never happen, just being super safe
if (rw._using)
{
throw new InvalidOperationException("panic: used.");
}
rw._using = true;
return(rw);
}
public MainDomSemaphoreLock(ILogger logger)
{
var lockName = "UMBRACO-" + MainDom.GetMainDomId() + "-MAINDOM-LCK";
_systemLock = new SystemLock(lockName);
var eventName = "UMBRACO-" + MainDom.GetMainDomId() + "-MAINDOM-EVT";
_signal = new EventWaitHandle(false, EventResetMode.AutoReset, eventName);
_logger = logger;
}
public MainDomSemaphoreLock(ILogger <MainDomSemaphoreLock> logger, IHostingEnvironment hostingEnvironment)
{
var mainDomId = MainDom.GetMainDomId(hostingEnvironment);
var lockName = "UMBRACO-" + mainDomId + "-MAINDOM-LCK";
_systemLock = new SystemLock(lockName);
var eventName = "UMBRACO-" + mainDomId + "-MAINDOM-EVT";
_signal = new EventWaitHandle(false, EventResetMode.AutoReset, eventName);
_logger = logger;
}
public MainDomSemaphoreLock(ILogger <MainDomSemaphoreLock> logger, IHostingEnvironment hostingEnvironment)
{
if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
throw new PlatformNotSupportedException("MainDomSemaphoreLock is only supported on Windows.");
}
var mainDomId = MainDom.GetMainDomId(hostingEnvironment);
var lockName = "UMBRACO-" + mainDomId + "-MAINDOM-LCK";
_systemLock = new SystemLock(lockName);
var eventName = "UMBRACO-" + mainDomId + "-MAINDOM-EVT";
_signal = new EventWaitHandle(false, EventResetMode.AutoReset, eventName);
_logger = logger;
}
