diff options
Diffstat (limited to 'src/addrman.h')
-rw-r--r-- | src/addrman.h | 93 |
1 files changed, 39 insertions, 54 deletions
diff --git a/src/addrman.h b/src/addrman.h index cf1949c28c..e54184ce35 100644 --- a/src/addrman.h +++ b/src/addrman.h @@ -11,7 +11,7 @@ #include <random.h> #include <sync.h> #include <timedata.h> -#include <util.h> +#include <util/system.h> #include <map> #include <set> @@ -23,33 +23,31 @@ */ class CAddrInfo : public CAddress { - - public: //! last try whatsoever by us (memory only) - int64_t nLastTry; + int64_t nLastTry{0}; //! last counted attempt (memory only) - int64_t nLastCountAttempt; + int64_t nLastCountAttempt{0}; private: //! where knowledge about this address first came from CNetAddr source; //! last successful connection by us - int64_t nLastSuccess; + int64_t nLastSuccess{0}; //! connection attempts since last successful attempt - int nAttempts; + int nAttempts{0}; //! reference count in new sets (memory only) - int nRefCount; + int nRefCount{0}; //! in tried set? (memory only) - bool fInTried; + bool fInTried{false}; //! position in vRandom - int nRandomPos; + int nRandomPos{-1}; friend class CAddrMan; @@ -65,25 +63,12 @@ public: READWRITE(nAttempts); } - void Init() - { - nLastSuccess = 0; - nLastTry = 0; - nLastCountAttempt = 0; - nAttempts = 0; - nRefCount = 0; - fInTried = false; - nRandomPos = -1; - } - CAddrInfo(const CAddress &addrIn, const CNetAddr &addrSource) : CAddress(addrIn), source(addrSource) { - Init(); } CAddrInfo() : CAddress(), source() { - Init(); } //! Calculate in which "tried" bucket this entry belongs @@ -106,7 +91,6 @@ public: //! Calculate the relative chance this entry should be given when selecting nodes to connect to double GetChance(int64_t nNow = GetAdjustedTime()) const; - }; /** Stochastic address manager @@ -182,41 +166,45 @@ public: //! the maximum number of tried addr collisions to store #define ADDRMAN_SET_TRIED_COLLISION_SIZE 10 +//! the maximum time we'll spend trying to resolve a tried table collision, in seconds +static const int64_t ADDRMAN_TEST_WINDOW = 40*60; // 40 minutes + /** * Stochastical (IP) address manager */ class CAddrMan { -private: +protected: //! critical section to protect the inner data structures mutable CCriticalSection cs; +private: //! last used nId - int nIdCount; + int nIdCount GUARDED_BY(cs); //! table with information about all nIds - std::map<int, CAddrInfo> mapInfo; + std::map<int, CAddrInfo> mapInfo GUARDED_BY(cs); //! find an nId based on its network address - std::map<CNetAddr, int> mapAddr; + std::map<CNetAddr, int> mapAddr GUARDED_BY(cs); //! randomly-ordered vector of all nIds - std::vector<int> vRandom; + std::vector<int> vRandom GUARDED_BY(cs); // number of "tried" entries - int nTried; + int nTried GUARDED_BY(cs); //! list of "tried" buckets - int vvTried[ADDRMAN_TRIED_BUCKET_COUNT][ADDRMAN_BUCKET_SIZE]; + int vvTried[ADDRMAN_TRIED_BUCKET_COUNT][ADDRMAN_BUCKET_SIZE] GUARDED_BY(cs); //! number of (unique) "new" entries - int nNew; + int nNew GUARDED_BY(cs); //! list of "new" buckets - int vvNew[ADDRMAN_NEW_BUCKET_COUNT][ADDRMAN_BUCKET_SIZE]; + int vvNew[ADDRMAN_NEW_BUCKET_COUNT][ADDRMAN_BUCKET_SIZE] GUARDED_BY(cs); //! last time Good was called (memory only) - int64_t nLastGood; + int64_t nLastGood GUARDED_BY(cs); //! Holds addrs inserted into tried table that collide with existing entries. Test-before-evict discipline used to resolve these collisions. std::set<int> m_tried_collisions; @@ -229,58 +217,55 @@ protected: FastRandomContext insecure_rand; //! Find an entry. - CAddrInfo* Find(const CNetAddr& addr, int *pnId = nullptr); + CAddrInfo* Find(const CNetAddr& addr, int *pnId = nullptr) EXCLUSIVE_LOCKS_REQUIRED(cs); //! find an entry, creating it if necessary. //! nTime and nServices of the found node are updated, if necessary. - CAddrInfo* Create(const CAddress &addr, const CNetAddr &addrSource, int *pnId = nullptr); + CAddrInfo* Create(const CAddress &addr, const CNetAddr &addrSource, int *pnId = nullptr) EXCLUSIVE_LOCKS_REQUIRED(cs); //! Swap two elements in vRandom. - void SwapRandom(unsigned int nRandomPos1, unsigned int nRandomPos2); + void SwapRandom(unsigned int nRandomPos1, unsigned int nRandomPos2) EXCLUSIVE_LOCKS_REQUIRED(cs); //! Move an entry from the "new" table(s) to the "tried" table - void MakeTried(CAddrInfo& info, int nId); + void MakeTried(CAddrInfo& info, int nId) EXCLUSIVE_LOCKS_REQUIRED(cs); //! Delete an entry. It must not be in tried, and have refcount 0. - void Delete(int nId); + void Delete(int nId) EXCLUSIVE_LOCKS_REQUIRED(cs); //! Clear a position in a "new" table. This is the only place where entries are actually deleted. - void ClearNew(int nUBucket, int nUBucketPos); + void ClearNew(int nUBucket, int nUBucketPos) EXCLUSIVE_LOCKS_REQUIRED(cs); //! Mark an entry "good", possibly moving it from "new" to "tried". - void Good_(const CService &addr, bool test_before_evict, int64_t time); + void Good_(const CService &addr, bool test_before_evict, int64_t time) EXCLUSIVE_LOCKS_REQUIRED(cs); //! Add an entry to the "new" table. - bool Add_(const CAddress &addr, const CNetAddr& source, int64_t nTimePenalty); + bool Add_(const CAddress &addr, const CNetAddr& source, int64_t nTimePenalty) EXCLUSIVE_LOCKS_REQUIRED(cs); //! Mark an entry as attempted to connect. - void Attempt_(const CService &addr, bool fCountFailure, int64_t nTime); + void Attempt_(const CService &addr, bool fCountFailure, int64_t nTime) EXCLUSIVE_LOCKS_REQUIRED(cs); //! Select an address to connect to, if newOnly is set to true, only the new table is selected from. - CAddrInfo Select_(bool newOnly); + CAddrInfo Select_(bool newOnly) EXCLUSIVE_LOCKS_REQUIRED(cs); //! See if any to-be-evicted tried table entries have been tested and if so resolve the collisions. - void ResolveCollisions_(); + void ResolveCollisions_() EXCLUSIVE_LOCKS_REQUIRED(cs); //! Return a random to-be-evicted tried table address. - CAddrInfo SelectTriedCollision_(); - - //! Wraps GetRandInt to allow tests to override RandomInt and make it determinismistic. - virtual int RandomInt(int nMax); + CAddrInfo SelectTriedCollision_() EXCLUSIVE_LOCKS_REQUIRED(cs); #ifdef DEBUG_ADDRMAN //! Perform consistency check. Returns an error code or zero. - int Check_(); + int Check_() EXCLUSIVE_LOCKS_REQUIRED(cs); #endif //! Select several addresses at once. - void GetAddr_(std::vector<CAddress> &vAddr); + void GetAddr_(std::vector<CAddress> &vAddr) EXCLUSIVE_LOCKS_REQUIRED(cs); //! Mark an entry as currently-connected-to. - void Connected_(const CService &addr, int64_t nTime); + void Connected_(const CService &addr, int64_t nTime) EXCLUSIVE_LOCKS_REQUIRED(cs); //! Update an entry's service bits. - void SetServices_(const CService &addr, ServiceFlags nServices); + void SetServices_(const CService &addr, ServiceFlags nServices) EXCLUSIVE_LOCKS_REQUIRED(cs); public: /** @@ -472,7 +457,7 @@ public: { LOCK(cs); std::vector<int>().swap(vRandom); - nKey = GetRandHash(); + nKey = insecure_rand.rand256(); for (size_t bucket = 0; bucket < ADDRMAN_NEW_BUCKET_COUNT; bucket++) { for (size_t entry = 0; entry < ADDRMAN_BUCKET_SIZE; entry++) { vvNew[bucket][entry] = -1; |