From 73f71e19965e07534eb47701f2b23c9ed59ef475 Mon Sep 17 00:00:00 2001
From: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
Date: Sat, 19 Sep 2020 11:52:27 +0300
Subject: refactor: Use explicit function type instead of template

---
 src/net.h | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/net.h b/src/net.h
index 60c3dc6aef..b0294d5b15 100644
--- a/src/net.h
+++ b/src/net.h
@@ -258,8 +258,8 @@ public:
 
     void PushMessage(CNode* pnode, CSerializedNetMsg&& msg);
 
-    template<typename Callable>
-    void ForEachNode(Callable&& func)
+    using NodeFn = std::function<void(CNode*)>;
+    void ForEachNode(const NodeFn& func)
     {
         LOCK(cs_vNodes);
         for (auto&& node : vNodes) {
@@ -268,8 +268,7 @@ public:
         }
     };
 
-    template<typename Callable>
-    void ForEachNode(Callable&& func) const
+    void ForEachNode(const NodeFn& func) const
     {
         LOCK(cs_vNodes);
         for (auto&& node : vNodes) {
-- 
cgit v1.2.3


From ab2a44297fd0796bf5797ae2a477e8e56d9c3c12 Mon Sep 17 00:00:00 2001
From: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
Date: Sat, 19 Sep 2020 11:56:28 +0300
Subject: Replace LockAssertion with a proper thread safety annotations

---
 src/net_processing.cpp | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

(limited to 'src')

diff --git a/src/net_processing.cpp b/src/net_processing.cpp
index 166adc05bb..7cf6da270e 100644
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -662,8 +662,8 @@ static void MaybeSetPeerAsAnnouncingHeaderAndIDs(NodeId nodeid, CConnman& connma
                 return;
             }
         }
-        connman.ForNode(nodeid, [&connman](CNode* pfrom){
-            LockAssertion lock(::cs_main);
+        connman.ForNode(nodeid, [&connman](CNode* pfrom) EXCLUSIVE_LOCKS_REQUIRED(::cs_main) {
+            AssertLockHeld(::cs_main);
             uint64_t nCMPCTBLOCKVersion = (pfrom->GetLocalServices() & NODE_WITNESS) ? 2 : 1;
             if (lNodesAnnouncingHeaderAndIDs.size() >= 3) {
                 // As per BIP152, we only get 3 of our peers to announce
@@ -1355,8 +1355,8 @@ void PeerManager::NewPoWValidBlock(const CBlockIndex *pindex, const std::shared_
         fWitnessesPresentInMostRecentCompactBlock = fWitnessEnabled;
     }
 
-    m_connman.ForEachNode([this, &pcmpctblock, pindex, &msgMaker, fWitnessEnabled, &hashBlock](CNode* pnode) {
-        LockAssertion lock(::cs_main);
+    m_connman.ForEachNode([this, &pcmpctblock, pindex, &msgMaker, fWitnessEnabled, &hashBlock](CNode* pnode) EXCLUSIVE_LOCKS_REQUIRED(::cs_main) {
+        AssertLockHeld(::cs_main);
 
         // TODO: Avoid the repeated-serialization here
         if (pnode->nVersion < INVALID_CB_NO_BAN_VERSION || pnode->fDisconnect)
@@ -1489,9 +1489,8 @@ bool static AlreadyHaveBlock(const uint256& block_hash) EXCLUSIVE_LOCKS_REQUIRED
 
 void RelayTransaction(const uint256& txid, const uint256& wtxid, const CConnman& connman)
 {
-    connman.ForEachNode([&txid, &wtxid](CNode* pnode)
-    {
-        LockAssertion lock(::cs_main);
+    connman.ForEachNode([&txid, &wtxid](CNode* pnode) EXCLUSIVE_LOCKS_REQUIRED(::cs_main) {
+        AssertLockHeld(::cs_main);
 
         CNodeState* state = State(pnode->GetId());
         if (state == nullptr) return;
@@ -3979,8 +3978,8 @@ void PeerManager::EvictExtraOutboundPeers(int64_t time_in_seconds)
         NodeId worst_peer = -1;
         int64_t oldest_block_announcement = std::numeric_limits<int64_t>::max();
 
-        m_connman.ForEachNode([&](CNode* pnode) {
-            LockAssertion lock(::cs_main);
+        m_connman.ForEachNode([&](CNode* pnode) EXCLUSIVE_LOCKS_REQUIRED(::cs_main) {
+            AssertLockHeld(::cs_main);
 
             // Ignore non-outbound peers, or nodes marked for disconnect already
             if (!pnode->IsOutboundOrBlockRelayConn() || pnode->fDisconnect) return;
@@ -3996,8 +3995,8 @@ void PeerManager::EvictExtraOutboundPeers(int64_t time_in_seconds)
             }
         });
         if (worst_peer != -1) {
-            bool disconnected = m_connman.ForNode(worst_peer, [&](CNode *pnode) {
-                LockAssertion lock(::cs_main);
+            bool disconnected = m_connman.ForNode(worst_peer, [&](CNode* pnode) EXCLUSIVE_LOCKS_REQUIRED(::cs_main) {
+                AssertLockHeld(::cs_main);
 
                 // Only disconnect a peer that has been connected to us for
                 // some reasonable fraction of our check-frequency, to give
-- 
cgit v1.2.3


From 0bd1184adf6610c0bd14f4e9a25c0a200e65ae25 Mon Sep 17 00:00:00 2001
From: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
Date: Sat, 19 Sep 2020 12:06:36 +0300
Subject: Remove unused LockAssertion struct

---
 src/sync.h | 14 --------------
 1 file changed, 14 deletions(-)

(limited to 'src')

diff --git a/src/sync.h b/src/sync.h
index 7b397a8003..41f4e43bdd 100644
--- a/src/sync.h
+++ b/src/sync.h
@@ -352,18 +352,4 @@ public:
     }
 };
 
-// Utility class for indicating to compiler thread analysis that a mutex is
-// locked (when it couldn't be determined otherwise).
-struct SCOPED_LOCKABLE LockAssertion
-{
-    template <typename Mutex>
-    explicit LockAssertion(Mutex& mutex) EXCLUSIVE_LOCK_FUNCTION(mutex)
-    {
-#ifdef DEBUG_LOCKORDER
-        AssertLockHeld(mutex);
-#endif
-    }
-    ~LockAssertion() UNLOCK_FUNCTION() {}
-};
-
 #endif // BITCOIN_SYNC_H
-- 
cgit v1.2.3