Fix deadlock.
This commit is contained in:
parent
1d775af34a
commit
9e7c778cc8
3 changed files with 45 additions and 40 deletions
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@ -82,7 +82,7 @@ public:
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*/
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inline SharedPtr<Peer> getPeerNoCache(const Address &zta)
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{
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Mutex::Lock _l(_lock);
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Mutex::Lock _l(_peers_m);
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const SharedPtr<Peer> *const ap = _peers.get(zta);
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if (ap)
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return *ap;
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@ -98,7 +98,7 @@ public:
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*/
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inline SharedPtr<Path> getPath(const InetAddress &l,const InetAddress &r)
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{
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Mutex::Lock _l(_lock);
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Mutex::Lock _l(_paths_m);
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SharedPtr<Path> &p = _paths[Path::HashKey(l,r)];
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if (!p)
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p.setToUnsafe(new Path(l,r));
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@ -178,7 +178,7 @@ public:
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*/
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inline void getUpstreamStableEndpoints(Hashtable< Address,std::vector<InetAddress> > &eps) const
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{
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Mutex::Lock _l(_lock);
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Mutex::Lock _l(_upstreams_m);
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for(std::vector<World::Root>::const_iterator i(_planet.roots().begin());i!=_planet.roots().end();++i) {
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std::vector<InetAddress> &ips = eps[i->identity.address()];
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for(std::vector<InetAddress>::const_iterator j(i->stableEndpoints.begin());j!=i->stableEndpoints.end();++j) {
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@ -204,7 +204,7 @@ public:
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*/
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inline std::vector<Address> upstreamAddresses() const
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{
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Mutex::Lock _l(_lock);
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Mutex::Lock _l(_upstreams_m);
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std::vector<Address> u(_upstreamAddresses);
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for(std::vector<Address>::const_iterator m(_contactingMoons.begin());m!=_contactingMoons.end();++m) {
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if (std::find(u.begin(),u.end(),*m) == u.end())
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@ -218,7 +218,7 @@ public:
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*/
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inline std::vector<World> moons() const
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{
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Mutex::Lock _l(_lock);
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Mutex::Lock _l(_upstreams_m);
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return _moons;
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}
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@ -227,7 +227,7 @@ public:
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*/
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inline World planet() const
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{
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Mutex::Lock _l(_lock);
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Mutex::Lock _l(_upstreams_m);
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return _planet;
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}
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@ -286,7 +286,7 @@ public:
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inline unsigned long countActive(uint64_t now) const
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{
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unsigned long cnt = 0;
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Mutex::Lock _l(_lock);
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Mutex::Lock _l(_peers_m);
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Hashtable< Address,SharedPtr<Peer> >::Iterator i(const_cast<Topology *>(this)->_peers);
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Address *a = (Address *)0;
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SharedPtr<Peer> *p = (SharedPtr<Peer> *)0;
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@ -299,20 +299,13 @@ public:
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/**
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* Apply a function or function object to all peers
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*
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* Note: explicitly template this by reference if you want the object
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* passed by reference instead of copied.
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*
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* Warning: be careful not to use features in these that call any other
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* methods of Topology that may lock _lock, otherwise a recursive lock
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* and deadlock or lock corruption may occur.
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*
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* @param f Function to apply
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* @tparam F Function or function object type
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*/
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template<typename F>
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inline void eachPeer(F f)
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{
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Mutex::Lock _l(_lock);
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Mutex::Lock _l(_peers_m);
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Hashtable< Address,SharedPtr<Peer> >::Iterator i(_peers);
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Address *a = (Address *)0;
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SharedPtr<Peer> *p = (SharedPtr<Peer> *)0;
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@ -332,7 +325,7 @@ public:
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*/
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inline std::vector< std::pair< Address,SharedPtr<Peer> > > allPeers() const
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{
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Mutex::Lock _l(_lock);
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Mutex::Lock _l(_peers_m);
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return _peers.entries();
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}
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@ -382,7 +375,7 @@ public:
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{
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if (count > ZT_MAX_TRUSTED_PATHS)
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count = ZT_MAX_TRUSTED_PATHS;
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Mutex::Lock _l(_lock);
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Mutex::Lock _l(_trustedPaths_m);
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for(unsigned int i=0;i<count;++i) {
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_trustedPathIds[i] = ids[i];
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_trustedPathNetworks[i] = networks[i];
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@ -399,18 +392,20 @@ private:
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uint64_t _trustedPathIds[ZT_MAX_TRUSTED_PATHS];
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InetAddress _trustedPathNetworks[ZT_MAX_TRUSTED_PATHS];
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unsigned int _trustedPathCount;
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World _planet;
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std::vector< World > _moons;
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Mutex _trustedPaths_m;
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Hashtable< Address,SharedPtr<Peer> > _peers;
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Hashtable< Path::HashKey,SharedPtr<Path> > _paths;
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Mutex _peers_m;
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Hashtable< Path::HashKey,SharedPtr<Path> > _paths;
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Mutex _paths_m;
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World _planet;
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std::vector<World> _moons;
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std::vector<Address> _contactingMoons;
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std::vector<Address> _upstreamAddresses;
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bool _amRoot;
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Mutex _lock;
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Mutex _upstreams_m; // locks worlds, upstream info, moon info, etc.
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};
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} // namespace ZeroTier
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