Default to DB_TXN_WRITE_NOSYNC for all transactional operations

[novacoin.git] / src / db.cpp

diff --git a/src/db.cpp b/src/db.cpp
index 39a4189..ef45976 100644 (file)
--- a/src/db.cpp
+++ b/src/db.cpp
@@ -28,6 +28,7 @@ unsigned int nWalletDBUpdated;
 
 CCriticalSection cs_db;
 static bool fDbEnvInit = false;
+bool fDetachDB = false;
 DbEnv dbenv(0);
 map<string, int> mapFileUseCount;
 static map<string, Db*> mapDb;
@@ -95,6 +96,7 @@ CDB::CDB(const char *pszFile, const char* pszMode) : pdb(NULL)
             dbenv.set_lk_max_locks(10000);
             dbenv.set_lk_max_objects(10000);
             dbenv.set_errfile(fopen(pathErrorFile.string().c_str(), "a")); /// debug
+            dbenv.set_flags(DB_TXN_WRITE_NOSYNC, 1);
             dbenv.set_flags(DB_AUTO_COMMIT, 1);
             dbenv.log_set_config(DB_LOG_AUTO_REMOVE, 1);
             ret = dbenv.open(pathDataDir.string().c_str(),
@@ -307,9 +309,13 @@ void DBFlush(bool fShutdown)
             {
                 // Move log data to the dat file
                 CloseDb(strFile);
+                printf("%s checkpoint\n", strFile.c_str());
                 dbenv.txn_checkpoint(0, 0, 0);
-                printf("%s flush\n", strFile.c_str());
-                dbenv.lsn_reset(strFile.c_str(), 0);
+                if ((strFile != "blkindex.dat" && strFile != "addr.dat") || fDetachDB) {
+                    printf("%s detach\n", strFile.c_str());
+                    dbenv.lsn_reset(strFile.c_str(), 0);
+                }
+                printf("%s closed\n", strFile.c_str());
                 mapFileUseCount.erase(mi++);
             }
             else
@@ -648,7 +654,7 @@ bool CTxDB::LoadBlockIndex()
                             }
                     }
                     // check level 4: check whether spent txouts were spent within the main chain
-                    int nOutput = 0;
+                    unsigned int nOutput = 0;
                     if (nCheckLevel>3)
                     {
                         BOOST_FOREACH(const CDiskTxPos &txpos, txindex.vSpent)