private static IntPtr GetEnvironmentHandle(out int unmanagedThreadId, out bool isNew)
{
unmanagedThreadId = CurrentUnmanagedThreadId;
isNew = false;
IntPtr env = JavaVM.GetEnvironment();
if (env == IntPtr.Zero) // environment not attached
{
string threadName = Thread.CurrentThread.Name;
if (!(threadName != null && threadName.Length > 0))
{
threadName = "{noname_thread}";
}
threadName += ", unmanaged thread ID: ";
threadName += unmanagedThreadId.ToString(CultureInfo.InvariantCulture);
JavaVMThreadAttachArguments args = new JavaVMThreadAttachArguments(threadName, null);
env = JavaVM.AttachCurrentThread(args);
isNew = true;
}
return env;
}
internal static IntPtr AttachCurrentThread(JavaVMThreadAttachArguments arguments)
{
JavaVMAttachArgs attachArgs = new JavaVMAttachArgs();
if (arguments != null)
{
attachArgs = arguments.ToArgs(Instance.JvmConfiguration.Version);
}
try
{
unsafe
{
void** ppEnv = null;
void* pArgs = null;
if (arguments != null)
{
pArgs = &attachArgs;
}
int result = Instance.mInvokeInterface.AttachCurrentThread(Instance.mJavaVM, &ppEnv, pArgs);
if (0 != result)
{
JniException.CheckVMErrorCode(result);
}
IntPtr environmentHandle = new IntPtr((void*)ppEnv);
return environmentHandle;
}
}
finally
{
if (arguments != null)
{
JavaVMThreadAttachArguments.FreeArgs(attachArgs);
}
}
}