Make RX VM an option for calculate_pow_hash

This means we don't have to init the dataset
if it's not needed

consensus/rules/src/blocks.rs

@@ -67,9 +67,11 @@ pub fn randomx_seed_height(height: u64) -> u64 {
 
 /// Calculates the POW hash of this block.
 ///
+/// `randomx_vm` must be [`Some`] after hf 12.
+///
 /// ref: https://monero-book.cuprate.org/consensus_rules/blocks.html#pow-function
 pub fn calculate_pow_hash<R: RandomX>(
-    randomx_vm: &R,
+    randomx_vm: Option<&R>,
     buf: &[u8],
     height: u64,
     hf: &HardFork,
@@ -88,6 +90,7 @@ pub fn calculate_pow_hash<R: RandomX>(
         cryptonight_hash_r(buf, height)
     } else {
         randomx_vm
+            .expect("RandomX VM needed from hf 12")
             .calculate_hash(buf)
             .map_err(|_| BlockError::POWInvalid)?
     })

consensus/rules/src/miner_tx.rs

@@ -129,10 +129,20 @@ fn check_time_lock(time_lock: &Timelock, chain_height: u64) -> Result<(), MinerT
 /// Sums the outputs checking for overflow.
 ///
 /// ref: https://monero-book.cuprate.org/consensus_rules/blocks/miner_tx.html#output-amounts
-fn sum_outputs(outputs: &[Output], hf: &HardFork) -> Result<u64, MinerTxError> {
+/// &&   https://monero-book.cuprate.org/consensus_rules/blocks/miner_tx.html#zero-amount-v1-output
+fn sum_outputs(
+    outputs: &[Output],
+    hf: &HardFork,
+    tx_version: &TxVersion,
+) -> Result<u64, MinerTxError> {
     let mut sum: u64 = 0;
     for out in outputs {
         let amt = out.amount.unwrap_or(0);
+
+        if tx_version == &TxVersion::RingSignatures && amt == 0 {
+            return Err(MinerTxError::OutputAmountIncorrect);
+        }
+
         if hf == &HardFork::V3 && !is_decomposed_amount(&amt) {
             return Err(MinerTxError::OutputNotDecomposed);
         }
@@ -193,7 +203,7 @@ pub fn check_miner_tx(
     check_output_types(&tx.prefix.outputs, hf).map_err(|_| MinerTxError::InvalidOutputType)?;
 
     let reward = calculate_block_reward(block_weight, median_bw, already_generated_coins, hf);
-    let total_outs = sum_outputs(&tx.prefix.outputs, hf)?;
+    let total_outs = sum_outputs(&tx.prefix.outputs, hf, &tx_version)?;
 
     check_total_output_amt(total_outs, reward, total_fees, hf)
 }

consensus/src/bin/scan_chain.rs

@@ -36,7 +36,8 @@ use monero_consensus::{blocks::randomx_seed_height, HardFork};
 
 mod tx_pool;
 
-const MAX_BLOCKS_IN_RANGE: u64 = 200;
+const MAX_BLOCKS_IN_RANGE: u64 = 1000;
+const BATCHES_IN_REQUEST: u64 = 3;
 const MAX_BLOCKS_HEADERS_IN_RANGE: u64 = 1000;
 
 /// Calls for a batch of blocks, returning the response and the time it took.
@@ -100,19 +101,21 @@ where
     D::Future: Send + 'static,
 {
     let mut next_fut = tokio::spawn(call_batch(
-        start_height..(start_height + (MAX_BLOCKS_IN_RANGE * 4)).min(chain_height),
+        start_height..(start_height + (MAX_BLOCKS_IN_RANGE * BATCHES_IN_REQUEST)).min(chain_height),
         database.clone(),
     ));
 
     for next_batch_start in (start_height..chain_height)
-        .step_by((MAX_BLOCKS_IN_RANGE * 4) as usize)
+        .step_by((MAX_BLOCKS_IN_RANGE * BATCHES_IN_REQUEST) as usize)
         .skip(1)
     {
         // Call the next batch while we handle this batch.
         let current_fut = std::mem::replace(
             &mut next_fut,
             tokio::spawn(call_batch(
-                next_batch_start..(next_batch_start + (MAX_BLOCKS_IN_RANGE * 4)).min(chain_height),
+                next_batch_start
+                    ..(next_batch_start + (MAX_BLOCKS_IN_RANGE * BATCHES_IN_REQUEST))
+                        .min(chain_height),
                 database.clone(),
             )),
         );
@@ -123,7 +126,7 @@ where
 
         tracing::info!(
             "Got batch: {:?}, chain height: {}",
-            (next_batch_start - (MAX_BLOCKS_IN_RANGE * 4))..(next_batch_start),
+            (next_batch_start - (MAX_BLOCKS_IN_RANGE * BATCHES_IN_REQUEST))..(next_batch_start),
             chain_height
         );
 
@@ -223,6 +226,7 @@ where
 
     tokio::spawn(async move {
         while let Some(blocks) = incoming_blocks.next().await {
+            if blocks.last().unwrap().header.major_version >= 12 {
                 let unwrapped_rx_vms = randomx_vms.as_mut().unwrap();
 
                 let blocks = rayon_spawn_async(move || {
@@ -258,7 +262,7 @@ where
                             let rx_vm = arc_rx_vms
                                 .get(&randomx_seed_height(block.block.number() as u64))
                                 .unwrap();
-                        PrePreparedBlock::new(block, rx_vm).unwrap()
+                            PrePreparedBlock::new_rx(block, rx_vm).unwrap()
                         })
                         .collect::<Vec<_>>()
                 })
@@ -267,6 +271,17 @@ where
                 randomx_vms = Some(Arc::into_inner(cloned_arc_rx_vms).unwrap());
 
                 prepped_blocks_tx.send(blocks).await.unwrap();
+            } else {
+                let blocks = rayon_spawn_async(move || {
+                    blocks
+                        .into_iter()
+                        .map(move |block| PrePreparedBlock::new(block).unwrap())
+                        .collect::<Vec<_>>()
+                })
+                .await;
+
+                prepped_blocks_tx.send(blocks).await.unwrap();
+            }
         }
     });
 

consensus/src/block.rs

@@ -68,7 +68,44 @@ pub struct PrePreparedBlock {
 }
 
 impl PrePreparedBlock {
-    pub fn new<R: RandomX>(
+    pub fn new(block: Block) -> Result<PrePreparedBlock, ConsensusError> {
+        struct DummyRX;
+
+        impl RandomX for DummyRX {
+            type Error = ();
+            fn calculate_hash(&self, _: &[u8]) -> Result<[u8; 32], Self::Error> {
+                panic!("DummyRX cant calculate hash")
+            }
+        }
+
+        let (hf_version, hf_vote) =
+            HardFork::from_block_header(&block.header).map_err(BlockError::HardForkError)?;
+
+        let Some(Input::Gen(height)) = block.miner_tx.prefix.inputs.first() else {
+            Err(ConsensusError::Block(BlockError::MinerTxError(
+                MinerTxError::InputNotOfTypeGen,
+            )))?
+        };
+
+        Ok(PrePreparedBlock {
+            block_blob: block.serialize(),
+            hf_vote,
+            hf_version,
+
+            block_hash: block.hash(),
+
+            pow_hash: calculate_pow_hash::<DummyRX>(
+                None,
+                &block.serialize_hashable(),
+                *height,
+                &hf_version,
+            )?,
+            miner_tx_weight: block.miner_tx.weight(),
+            block,
+        })
+    }
+
+    pub fn new_rx<R: RandomX>(
         block: PrePreparedBlockExPOW,
         randomx_vm: &R,
     ) -> Result<PrePreparedBlock, ConsensusError> {
@@ -85,7 +122,7 @@ impl PrePreparedBlock {
 
             block_hash: block.block_hash,
             pow_hash: calculate_pow_hash(
-                randomx_vm,
+                Some(randomx_vm),
                 &block.block.serialize_hashable(),
                 *height,
                 &block.hf_version,

consensus/src/context/rx_seed.rs

@@ -61,8 +61,11 @@ impl RandomXSeed {
                 }
             }
 
-            self.seeds.pop_back();
             self.seeds.push_front((height, *hash));
+
+            if self.seeds.len() > RX_SEEDS_CACHED {
+                self.seeds.pop_back();
+            }
         }
     }
 }

cryptonight/build.rs

@@ -1,10 +1,12 @@
 extern crate cc;
 
+use std::env;
+
 use cc::Build;
 
 fn main() {
-    Build::new()
+    let mut cfg = Build::new();
-        .include("c")
+    cfg.include("c")
         .file("c/aesb.c")
         .file("c/blake256.c")
         .file("c/groestl.c")
@@ -20,8 +22,13 @@ fn main() {
         .file("c/slow-hash.c")
         .file("c/CryptonightR_JIT.c")
         .file("c/CryptonightR_template.S")
-        .flag("-maes")
         .flag("-O3")
-        .flag("-fexceptions")
+        .flag("-fexceptions");
-        .compile("cryptonight")
+
+    let target = env::var("TARGET").unwrap();
+    if target.contains("x86_64") {
+        cfg.flag("-maes").flag("-msse2");
+    }
+
+    cfg.compile("cryptonight")
 }