DCOPY_NOSLEEP
dcopy_flags = DCOPY_NOSLEEP;
error = dcopy_alloc(DCOPY_NOSLEEP, &channel);
rc = dcopy_alloc(DCOPY_NOSLEEP, &handle);
flags = DCOPY_NOSLEEP;
flags = DCOPY_NOSLEEP | DCOPY_ALLOC_LINK;
if (flags & DCOPY_NOSLEEP) {