Add Arc to Mutex fields to make them cloneable

Author: optout21

lightning/src/ln/channel.rs

@@ -68,7 +68,7 @@ use crate::prelude::*;
 use core::{cmp,mem,fmt};
 use core::ops::Deref;
 #[cfg(any(test, fuzzing, debug_assertions))]
-use crate::sync::Mutex;
+use crate::sync::{Arc, Mutex};
 use crate::sign::type_resolver::ChannelSignerType;
 
 use super::channel_keys::{DelayedPaymentBasepoint, HtlcBasepoint, RevocationBasepoint};
@@ -1718,10 +1718,10 @@ pub(super) struct ChannelContext<SP: Deref> where SP::Target: SignerProvider {
 
 	#[cfg(debug_assertions)]
 	/// Max to_local and to_remote outputs in a locally-generated commitment transaction
-	holder_max_commitment_tx_output: Mutex<(u64, u64)>,
+	holder_max_commitment_tx_output: Arc<Mutex<(u64, u64)>>,
 	#[cfg(debug_assertions)]
 	/// Max to_local and to_remote outputs in a remote-generated commitment transaction
-	counterparty_max_commitment_tx_output: Mutex<(u64, u64)>,
+	counterparty_max_commitment_tx_output: Arc<Mutex<(u64, u64)>>,
 
 	// (fee_sats, skip_remote_output, fee_range, holder_sig)
 	last_sent_closing_fee: Option<(u64, bool, ClosingSignedFeeRange, Option<Signature>)>,
@@ -1833,9 +1833,9 @@ pub(super) struct ChannelContext<SP: Deref> where SP::Target: SignerProvider {
 	// be, by comparing the cached values to the fee of the tranaction generated by
 	// `build_commitment_transaction`.
 	#[cfg(any(test, fuzzing))]
-	next_local_commitment_tx_fee_info_cached: Mutex<Option<CommitmentTxInfoCached>>,
+	next_local_commitment_tx_fee_info_cached: Arc<Mutex<Option<CommitmentTxInfoCached>>>,
 	#[cfg(any(test, fuzzing))]
-	next_remote_commitment_tx_fee_info_cached: Mutex<Option<CommitmentTxInfoCached>>,
+	next_remote_commitment_tx_fee_info_cached: Arc<Mutex<Option<CommitmentTxInfoCached>>>,
 
 	/// lnd has a long-standing bug where, upon reconnection, if the channel is not yet confirmed
 	/// they will not send a channel_reestablish until the channel locks in. Then, they will send a
@@ -2658,9 +2658,9 @@ impl<SP: Deref> ChannelContext<SP> where SP::Target: SignerProvider {
 
 
 			#[cfg(debug_assertions)]
-			holder_max_commitment_tx_output: Mutex::new((value_to_self_msat, (channel_value_satoshis * 1000 - msg_push_msat).saturating_sub(value_to_self_msat))),
+			holder_max_commitment_tx_output: Arc::new(Mutex::new((value_to_self_msat, (channel_value_satoshis * 1000 - msg_push_msat).saturating_sub(value_to_self_msat)))),
 			#[cfg(debug_assertions)]
-			counterparty_max_commitment_tx_output: Mutex::new((value_to_self_msat, (channel_value_satoshis * 1000 - msg_push_msat).saturating_sub(value_to_self_msat))),
+			counterparty_max_commitment_tx_output: Arc::new(Mutex::new((value_to_self_msat, (channel_value_satoshis * 1000 - msg_push_msat).saturating_sub(value_to_self_msat)))),
 
 			last_sent_closing_fee: None,
 			last_received_closing_sig: None,
@@ -2718,9 +2718,9 @@ impl<SP: Deref> ChannelContext<SP> where SP::Target: SignerProvider {
 			announcement_sigs: None,
 
 			#[cfg(any(test, fuzzing))]
-			next_local_commitment_tx_fee_info_cached: Mutex::new(None),
+			next_local_commitment_tx_fee_info_cached: Arc::new(Mutex::new(None)),
 			#[cfg(any(test, fuzzing))]
-			next_remote_commitment_tx_fee_info_cached: Mutex::new(None),
+			next_remote_commitment_tx_fee_info_cached: Arc::new(Mutex::new(None)),
 
 			workaround_lnd_bug_4006: None,
 			sent_message_awaiting_response: None,
@@ -2890,9 +2890,9 @@ impl<SP: Deref> ChannelContext<SP> where SP::Target: SignerProvider {
 			// We'll add our counterparty's `funding_satoshis` to these max commitment output assertions
 			// when we receive `accept_channel2`.
 			#[cfg(debug_assertions)]
-			holder_max_commitment_tx_output: Mutex::new((channel_value_satoshis * 1000 - push_msat, push_msat)),
+			holder_max_commitment_tx_output: Arc::new(Mutex::new((channel_value_satoshis * 1000 - push_msat, push_msat))),
 			#[cfg(debug_assertions)]
-			counterparty_max_commitment_tx_output: Mutex::new((channel_value_satoshis * 1000 - push_msat, push_msat)),
+			counterparty_max_commitment_tx_output: Arc::new(Mutex::new((channel_value_satoshis * 1000 - push_msat, push_msat))),
 
 			last_sent_closing_fee: None,
 			last_received_closing_sig: None,
@@ -2948,9 +2948,9 @@ impl<SP: Deref> ChannelContext<SP> where SP::Target: SignerProvider {
 			announcement_sigs: None,
 
 			#[cfg(any(test, fuzzing))]
-			next_local_commitment_tx_fee_info_cached: Mutex::new(None),
+			next_local_commitment_tx_fee_info_cached: Arc::new(Mutex::new(None)),
 			#[cfg(any(test, fuzzing))]
-			next_remote_commitment_tx_fee_info_cached: Mutex::new(None),
+			next_remote_commitment_tx_fee_info_cached: Arc::new(Mutex::new(None)),
 
 			workaround_lnd_bug_4006: None,
 			sent_message_awaiting_response: None,
@@ -4645,11 +4645,13 @@ impl<SP: Deref> ChannelContext<SP> where SP::Target: SignerProvider {
 		self.get_initial_counterparty_commitment_signature(logger)
 	}
 
-	/// Clone, each field, with a few exceptions, notably the channel signer, and
-	/// a few non-cloneable fields (such as Secp256k1 context)
+	/// Clone, each field, with the exception of the channel signer.
 	#[allow(unused)]
 	fn clone(&self, holder_signer: <SP::Target as SignerProvider>::EcdsaSigner) -> Self {
 		Self {
+			// Use provided channel signer
+			holder_signer: ChannelSignerType::Ecdsa(holder_signer),
+
 			config: self.config,
 			prev_config: self.prev_config,
 			inbound_handshake_limits_override: self.inbound_handshake_limits_override,
@@ -4658,12 +4660,9 @@ impl<SP: Deref> ChannelContext<SP> where SP::Target: SignerProvider {
 			temporary_channel_id: self.temporary_channel_id,
 			channel_state: self.channel_state,
 			announcement_sigs_state: self.announcement_sigs_state.clone(),
-			// Create new Secp256k context
-			secp_ctx: Secp256k1::new(),
+			secp_ctx: self.secp_ctx.clone(),
 			channel_value_satoshis: self.channel_value_satoshis,
 			latest_monitor_update_id: self.latest_monitor_update_id,
-			// Use provided channel signer
-			holder_signer: ChannelSignerType::Ecdsa(holder_signer),
 			shutdown_scriptpubkey: self.shutdown_scriptpubkey.clone(),
 			destination_script: self.destination_script.clone(),
 			// holder_commitment_point: self.holder_commitment_point,
@@ -4694,9 +4693,9 @@ impl<SP: Deref> ChannelContext<SP> where SP::Target: SignerProvider {
 			update_time_counter: self.update_time_counter,
 			// Create new mutex with copied values
 			#[cfg(debug_assertions)]
-			holder_max_commitment_tx_output: Mutex::new(*self.holder_max_commitment_tx_output.lock().unwrap()),
+			holder_max_commitment_tx_output: self.holder_max_commitment_tx_output.clone(),
 			#[cfg(debug_assertions)]
-			counterparty_max_commitment_tx_output: Mutex::new(*self.counterparty_max_commitment_tx_output.lock().unwrap()),
+			counterparty_max_commitment_tx_output: self.counterparty_max_commitment_tx_output.clone(),
 			last_sent_closing_fee: self.last_sent_closing_fee.clone(),
 			last_received_closing_sig: self.last_received_closing_sig,
 			target_closing_feerate_sats_per_kw: self.target_closing_feerate_sats_per_kw,
@@ -4733,9 +4732,9 @@ impl<SP: Deref> ChannelContext<SP> where SP::Target: SignerProvider {
 			announcement_sigs: self.announcement_sigs,
 			// Create new mutex with copied values
 			#[cfg(any(test, fuzzing))]
-			next_local_commitment_tx_fee_info_cached: Mutex::new(self.next_local_commitment_tx_fee_info_cached.lock().unwrap().clone()),
+			next_local_commitment_tx_fee_info_cached: self.next_local_commitment_tx_fee_info_cached.clone(),
 			#[cfg(any(test, fuzzing))]
-			next_remote_commitment_tx_fee_info_cached: Mutex::new(self.next_remote_commitment_tx_fee_info_cached.lock().unwrap().clone()),
+			next_remote_commitment_tx_fee_info_cached: self.next_remote_commitment_tx_fee_info_cached.clone(),
 			workaround_lnd_bug_4006: self.workaround_lnd_bug_4006.clone(),
 			sent_message_awaiting_response: self.sent_message_awaiting_response,
 			#[cfg(any(test, fuzzing))]
@@ -10928,9 +10927,9 @@ impl<'a, 'b, 'c, ES: Deref, SP: Deref> ReadableArgs<(&'a ES, &'b SP, u32, &'c Ch
 				feerate_per_kw,
 
 				#[cfg(debug_assertions)]
-				holder_max_commitment_tx_output: Mutex::new((0, 0)),
+				holder_max_commitment_tx_output: Arc::new(Mutex::new((0, 0))),
 				#[cfg(debug_assertions)]
-				counterparty_max_commitment_tx_output: Mutex::new((0, 0)),
+				counterparty_max_commitment_tx_output: Arc::new(Mutex::new((0, 0))),
 
 				last_sent_closing_fee: None,
 				last_received_closing_sig: None,
@@ -10975,9 +10974,9 @@ impl<'a, 'b, 'c, ES: Deref, SP: Deref> ReadableArgs<(&'a ES, &'b SP, u32, &'c Ch
 				announcement_sigs,
 
 				#[cfg(any(test, fuzzing))]
-				next_local_commitment_tx_fee_info_cached: Mutex::new(None),
+				next_local_commitment_tx_fee_info_cached: Arc::new(Mutex::new(None)),
 				#[cfg(any(test, fuzzing))]
-				next_remote_commitment_tx_fee_info_cached: Mutex::new(None),
+				next_remote_commitment_tx_fee_info_cached: Arc::new(Mutex::new(None)),
 
 				workaround_lnd_bug_4006: None,
 				sent_message_awaiting_response: None,