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Fix rpc-hanging deadlocks

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Collapsed multiple wallet mutexes to a single cs_wallet, to avoid deadlocks with wallet methods that acquired locks in different order.
Also change master RPC call handler to acquire cs_main and cs_wallet locks before executing RPC calls; requiring each RPC call to acquire the right set of locks in the right order was too error-prone.
This commit is contained in:
Gavin Andresen
2011-08-26 14:37:23 -04:00
parent b0243da77c
commit 6cc4a62c0e
9 changed files with 481 additions and 570 deletions
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44
src/keystore.h
View File

@@ -9,9 +9,10 @@
class CKeyStore
{
public:
protected:
mutable CCriticalSection cs_KeyStore;
public:
virtual bool AddKey(const CKey& key) =0;
virtual bool HaveKey(const CBitcoinAddress &address) const =0;
virtual bool GetKey(const CBitcoinAddress &address, CKey& keyOut) const =0;
@@ -30,15 +31,21 @@ public:
bool AddKey(const CKey& key);
bool HaveKey(const CBitcoinAddress &address) const
{
return (mapKeys.count(address) > 0);
bool result;
CRITICAL_BLOCK(cs_KeyStore)
result = (mapKeys.count(address) > 0);
return result;
}
bool GetKey(const CBitcoinAddress &address, CKey& keyOut) const
{
KeyMap::const_iterator mi = mapKeys.find(address);
if (mi != mapKeys.end())
CRITICAL_BLOCK(cs_KeyStore)
{
keyOut.SetSecret((*mi).second);
return true;
KeyMap::const_iterator mi = mapKeys.find(address);
if (mi != mapKeys.end())
{
keyOut.SetSecret((*mi).second);
return true;
}
}
return false;
}
@@ -74,8 +81,6 @@ protected:
bool Unlock(const CKeyingMaterial& vMasterKeyIn);
public:
mutable CCriticalSection cs_vMasterKey; //No guarantees master key wont get locked before you can use it, so lock this first
CCryptoKeyStore() : fUseCrypto(false)
{
}
@@ -89,18 +94,20 @@ public:
{
if (!IsCrypted())
return false;
return vMasterKey.empty();
bool result;
CRITICAL_BLOCK(cs_KeyStore)
result = vMasterKey.empty();
return result;
}
bool Lock()
{
CRITICAL_BLOCK(cs_vMasterKey)
{
if (!SetCrypted())
return false;
if (!SetCrypted())
return false;
CRITICAL_BLOCK(cs_KeyStore)
vMasterKey.clear();
}
return true;
}
@@ -109,9 +116,12 @@ public:
bool AddKey(const CKey& key);
bool HaveKey(const CBitcoinAddress &address) const
{
if (!IsCrypted())
return CBasicKeyStore::HaveKey(address);
return mapCryptedKeys.count(address) > 0;
CRITICAL_BLOCK(cs_KeyStore)
{
if (!IsCrypted())
return CBasicKeyStore::HaveKey(address);
return mapCryptedKeys.count(address) > 0;
}
}
bool GetKey(const CBitcoinAddress &address, CKey& keyOut) const;
bool GetPubKey(const CBitcoinAddress &address, std::vector<unsigned char>& vchPubKeyOut) const;