/// <summary>
/// Initializes a JS engine
/// </summary>
private static void Initialize()
{
if (_initialized)
{
return;
}
lock (_initializationSynchronizer)
{
if (_initialized)
{
return;
}
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
try
{
AssemblyResolver.Initialize();
}
catch (InvalidOperationException e)
{
throw CoreErrorHelpers.WrapEngineLoadException(e, EngineName, EngineVersion);
}
}
_initialized = true;
}
}
/// <summary>
/// Constructs an instance of adapter for the ChakraCore JS engine
/// </summary>
/// <param name="settings">Settings of the ChakraCore JS engine</param>
public ChakraCoreJsEngine(ChakraCoreSettings settings)
{
#if NETFULL
Initialize();
#endif
ChakraCoreSettings chakraCoreSettings = settings ?? new ChakraCoreSettings();
JsRuntimeAttributes attributes = JsRuntimeAttributes.AllowScriptInterrupt;
if (chakraCoreSettings.DisableBackgroundWork)
{
attributes |= JsRuntimeAttributes.DisableBackgroundWork;
}
if (chakraCoreSettings.DisableEval)
{
attributes |= JsRuntimeAttributes.DisableEval;
}
if (chakraCoreSettings.DisableExecutablePageAllocation)
{
attributes |= JsRuntimeAttributes.DisableExecutablePageAllocation;
}
if (chakraCoreSettings.DisableFatalOnOOM)
{
attributes |= JsRuntimeAttributes.DisableFatalOnOOM;
}
if (chakraCoreSettings.DisableNativeCodeGeneration)
{
attributes |= JsRuntimeAttributes.DisableNativeCodeGeneration;
}
if (chakraCoreSettings.EnableExperimentalFeatures)
{
attributes |= JsRuntimeAttributes.EnableExperimentalFeatures;
}
#if NETSTANDARD1_3
_dispatcher = new ScriptDispatcher();
#else
_dispatcher = new ScriptDispatcher(chakraCoreSettings.MaxStackSize);
#endif
_promiseContinuationCallback = PromiseContinuationCallback;
try
{
_dispatcher.Invoke(() =>
{
_jsRuntime = JsRuntime.Create(attributes, null);
_jsRuntime.MemoryLimit = settings.MemoryLimit;
_jsContext = _jsRuntime.CreateContext();
if (_jsContext.IsValid)
{
_jsContext.AddRef();
}
});
}
catch (DllNotFoundException e)
{
throw WrapDllNotFoundException(e);
}
catch (Exception e)
{
throw CoreErrorHelpers.WrapEngineLoadException(e, EngineName, EngineVersion, true);
}
finally
{
if (!_jsContext.IsValid)
{
Dispose();
}
}
}
