internal SafeWaitHandleFromSafeHandle(SafeHandle handle)
{
Contract.Requires(!handle.IsInvalid && !handle.IsClosed);
SafeWaitHandle waitHandle;
bool succeeded = ProcessUtilities.DuplicateHandle(
#if FEATURE_SAFE_PROCESS_HANDLE
this.GetSafeWaitHandle(),
#else
new HandleRef(this, ProcessUtilities.GetCurrentProcess()),
#endif
handle,
#if FEATURE_SAFE_PROCESS_HANDLE
this.GetSafeWaitHandle(),
#else
new HandleRef(this, ProcessUtilities.GetCurrentProcess()),
#endif
out waitHandle,
0,
false,
ProcessUtilities.DUPLICATE_SAME_ACCESS);
if (!succeeded)
{
throw new NativeWin32Exception(Marshal.GetLastWin32Error(), "Unable to duplicate a process handle for use as a wait handle.");
}
#if FEATURE_SAFE_PROCESS_HANDLE
this.SetSafeWaitHandle(waitHandle);
#else
SafeWaitHandle = waitHandle;
#endif
}