JNIEXPORT jint JNICALL
Java_OnloadTemplateSend_Update ( JNIEnv* env, jclass cls,
jobject handle, jobject data,
jint offset, jint flags )
{
jlong h = GetLongFromObject( env, handle, "handle" );
struct onload_template_msg_update_iovec update;
jint rval = 0;
jint fd = GetIntFromObject( env, handle, "fd" );
if ( (*env)->ExceptionOccurred(env) )
return -EINVAL;
update.otmu_base = (*env)->GetDirectBufferAddress( env, data );
if ( !update.otmu_base )
return -ENOMEM;
update.otmu_len = (*env)->GetDirectBufferCapacity( env, data );
if ( update.otmu_len < 1 )
return -ENOMEM;
update.otmu_offset = offset;
update.otmu_flags = 0;
rval = onload_msg_template_update( fd,
(onload_template_handle) h,
&update, 1, flags );
if ( rval >= 0 && (flags & ONLOAD_TEMPLATE_FLAGS_SEND_NOW) ) {
SetLongOnObject( env, handle, "opaque", -1 );
}
return rval;
}
int templated_send(int handle, struct iovec* iov)
{
onload_template_handle tmpl;
struct onload_template_msg_update_iovec update;
struct iovec initial;
initial.iov_base = iov->iov_base;
initial.iov_len = iov->iov_len;
update.otmu_base = iov->iov_base;
update.otmu_len = iov->iov_len;
update.otmu_offset = 0;
update.otmu_flags = 0;
/* Note: This is initialising, and then updating to the same values.
* A real application would update only a subset of the values, and
* usually with different values.
*/
TRY( onload_msg_template_alloc(handle, &initial, 1, &tmpl, 0));
return onload_msg_template_update(handle, tmpl, &update, 1,
ONLOAD_TEMPLATE_FLAGS_SEND_NOW);
}