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find_nonce() + add_aux_pow async wrapper

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hinto.janai 2024-11-15 20:48:34 -05:00
parent 854b1752b1
commit 2d2d4931f8
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1 changed files with 28 additions and 32 deletions
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60
binaries/cuprated/src/rpc/json.rs
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@ -1009,8 +1009,16 @@ async fn flush_cache(
}) })
} }
/// <https://github.com/monero-project/monero/blob/cc73fe71162d564ffda8e549b79a350bca53c454/src/rpc/core_rpc_server.cpp#L2072-L2207> /// An async-friendly wrapper for [`add_aux_pow_inner`].
async fn add_aux_pow( async fn add_aux_pow(
state: CupratedRpcHandler,
request: AddAuxPowRequest,
) -> Result<AddAuxPowResponse, Error> {
tokio::task::spawn_blocking(|| add_aux_pow_inner(state, request)).await?
}
/// <https://github.com/monero-project/monero/blob/cc73fe71162d564ffda8e549b79a350bca53c454/src/rpc/core_rpc_server.cpp#L2072-L2207>
fn add_aux_pow_inner(
mut state: CupratedRpcHandler, mut state: CupratedRpcHandler,
request: AddAuxPowRequest, request: AddAuxPowRequest,
) -> Result<AddAuxPowResponse, Error> { ) -> Result<AddAuxPowResponse, Error> {
@ -1046,47 +1054,35 @@ async fn add_aux_pow(
path_domain += 1; path_domain += 1;
} }
let mut nonce = 0_u32; fn find_nonce(aux_pow_len: usize) -> Result<(u32, Box<[u32]>), Error> {
let mut collision = true; // INVARIANT: this must be the same `.len()` as `aux_pow`
let mut slots: Box<[u32]> = vec![0; len].into_boxed_slice(); // INVARIANT: this must be the same `.len()` as `aux_pow` let mut slots: Box<[u32]> = vec![u32::MAX; aux_pow_len].into_boxed_slice();
let mut slot_seen: Box<[bool]> = vec![false; aux_pow_len].into_boxed_slice();
for n in 0..u32::MAX { for nonce in 0..u32::MAX {
nonce = n; for i in &mut slots {
let slot_u32: u32 = todo!("const uint32_t slot = cryptonote::get_aux_slot(aux_pow[idx].first, nonce, aux_pow.size());");
let slot = u32_to_usize(slot_u32);
let slot_seen: Vec<bool> = vec![false; len]; if slot >= aux_pow_len {
return Err(anyhow!("Computed slot is out of range"));
}
collision = false; if slot_seen[slot] {
return Ok((nonce, slots));
}
slots.fill(u32::MAX); slot_seen[slot] = true;
*i = slot_u32;
for i in &mut slots {
let slot_u32: u32 = todo!("const uint32_t slot = cryptonote::get_aux_slot(aux_pow[idx].first, nonce, aux_pow.size());");
let slot = u32_to_usize(slot_u32);
if slot >= len {
return Err(anyhow!("Computed slot is out of range"));
} }
if slot_seen[slot] { slots.fill(u32::MAX);
collision = true;
break;
}
slot_seen[slot] = true;
*i = slot_u32;
} }
if !collision { Err(anyhow!("Failed to find a suitable nonce"))
break;
}
} }
let nonce = nonce; let (nonce, slots) = find_nonce(len)?;
let slots = slots;
if collision {
return Err(anyhow!("Failed to find a suitable nonce"));
}
// FIXME: use iterator version. // FIXME: use iterator version.
let (aux_pow_id_raw, aux_pow_raw) = { let (aux_pow_id_raw, aux_pow_raw) = {