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master: support optional args

This commit is contained in:
mwojcik 2023-09-21 17:31:49 +08:00
parent 4b3c9a3d08
commit c696fd826f
4 changed files with 40 additions and 23 deletions
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31
src/runtime/src/comms.rs
View File

@ -448,22 +448,23 @@ async fn handle_run_kernel(
#[cfg(has_drtio)]
kernel::Message::SubkernelMsgRecvRequest { id, timeout } => {
let message_received = subkernel::message_await(id, timeout, timer).await;
let status = match message_received {
Ok(_) => kernel::SubkernelStatus::NoError,
Err(SubkernelError::Timeout) => kernel::SubkernelStatus::Timeout,
Err(SubkernelError::IncorrectState) => kernel::SubkernelStatus::IncorrectState,
Err(SubkernelError::CommLost) => kernel::SubkernelStatus::CommLost,
Err(_) => kernel::SubkernelStatus::OtherError,
let (status, count) = match message_received {
Ok(ref message) => (kernel::SubkernelStatus::NoError, message.count),
Err(SubkernelError::Timeout) => (kernel::SubkernelStatus::Timeout, 0),
Err(SubkernelError::IncorrectState) => (kernel::SubkernelStatus::IncorrectState, 0),
Err(SubkernelError::CommLost) => (kernel::SubkernelStatus::CommLost, 0),
Err(_) => (kernel::SubkernelStatus::OtherError, 0),
};
control
.borrow_mut()
.tx
.async_send(kernel::Message::SubkernelMsgRecvReply { status: status })
.async_send(kernel::Message::SubkernelMsgRecvReply { status: status, count: count })
.await;
if let Ok((tag, data)) = message_received {
if let Ok(message) = message_received {
// receive code almost identical to RPC recv, except we are not reading from a stream
let mut reader = Cursor::new(data);
let mut tag: [u8; 1] = [tag];
let mut reader = Cursor::new(message.data);
let mut tag: [u8; 1] = [message.tag];
let mut i = 0;
loop {
// kernel has to consume all arguments in the whole message
let slot = match fast_recv(&mut control.borrow_mut().rx).await {
@ -493,10 +494,12 @@ async fn handle_run_kernel(
.tx
.async_send(kernel::Message::RpcRecvReply(Ok(0)))
.await;
match reader.read_u8() {
Ok(0) | Err(_) => break, // reached the end of data, we're done
Ok(t) => tag[0] = t, // update the tag for next read
};
i += 1;
if i < count {
tag[0] = reader.read_u8()?;
} else {
break;
}
}
}
}

1
src/runtime/src/kernel/mod.rs
View File

@ -116,6 +116,7 @@ pub enum Message {
#[cfg(has_drtio)]
SubkernelMsgRecvReply {
status: SubkernelStatus,
count: u8,
},
}

19
src/runtime/src/kernel/subkernel.rs
View File

@ -51,18 +51,20 @@ pub extern "C" fn await_finish(id: u32, timeout: u64) {
}
}
pub extern "C" fn send_message(id: u32, tag: &CSlice<u8>, data: *const *const ()) {
pub extern "C" fn send_message(id: u32, count: u8, tag: &CSlice<u8>, data: *const *const ()) {
let mut buffer = Vec::<u8>::new();
send_args(&mut buffer, 0, tag.as_ref(), data).expect("RPC encoding failed");
// overwrite service tag, include how many tags are in the message
buffer[3] = count;
unsafe {
KERNEL_CHANNEL_1TO0.as_mut().unwrap().send(Message::SubkernelMsgSend {
id: id,
data: buffer[4..].to_vec(),
data: buffer[3..].to_vec(),
});
}
}
pub extern "C" fn await_message(id: u32, timeout: u64) {
pub extern "C" fn await_message(id: u32, timeout: u64, min: u8, max: u8) {
unsafe {
KERNEL_CHANNEL_1TO0
.as_mut()
@ -75,18 +77,27 @@ pub extern "C" fn await_message(id: u32, timeout: u64) {
match unsafe { KERNEL_CHANNEL_0TO1.as_mut().unwrap() }.recv() {
Message::SubkernelMsgRecvReply {
status: SubkernelStatus::NoError,
} => (),
count
} => {
if min > count || count > max {
artiq_raise!("SubkernelError", "Received more or less arguments than required")
}
},
Message::SubkernelMsgRecvReply {
status: SubkernelStatus::IncorrectState,
..
} => artiq_raise!("SubkernelError", "Subkernel not running"),
Message::SubkernelMsgRecvReply {
status: SubkernelStatus::Timeout,
..
} => artiq_raise!("SubkernelError", "Subkernel timed out"),
Message::SubkernelMsgRecvReply {
status: SubkernelStatus::CommLost,
..
} => artiq_raise!("SubkernelError", "Lost communication with satellite"),
Message::SubkernelMsgRecvReply {
status: SubkernelStatus::OtherError,
..
} => artiq_raise!("SubkernelError", "An error occurred during subkernel operation"),
_ => panic!("expected SubkernelMsgRecvReply after SubkernelMsgRecvRequest"),
}

12
src/runtime/src/subkernel.rs
View File

@ -209,8 +209,9 @@ pub async fn await_finish(
}
}
struct Message {
pub struct Message {
from_id: u32,
pub count: u8,
pub tag: u8,
pub data: Vec<u8>,
}
@ -234,8 +235,9 @@ pub async fn message_handle_incoming(id: u32, last: bool, length: usize, data: &
id,
Message {
from_id: id,
tag: data[0],
data: data[1..length].to_vec(),
count: data[0],
tag: data[1],
data: data[2..length].to_vec(),
},
);
}
@ -249,7 +251,7 @@ pub async fn message_handle_incoming(id: u32, last: bool, length: usize, data: &
}
}
pub async fn message_await(id: u32, timeout: u64, timer: GlobalTimer) -> Result<(u8, Vec<u8>), Error> {
pub async fn message_await(id: u32, timeout: u64, timer: GlobalTimer) -> Result<Message, Error> {
match SUBKERNELS.async_lock().await.get(&id).unwrap().state {
SubkernelState::Finished {
status: FinishStatus::CommLost,
@ -265,7 +267,7 @@ pub async fn message_await(id: u32, timeout: u64, timer: GlobalTimer) -> Result<
let msg = &message_queue[i];
if msg.from_id == id {
let message = message_queue.remove(i);
return Ok((message.tag, message.data));
return Ok(message);
}
}
}