Reinitialize state in between individual unit tests.

This changes the TestingSetup fixture to be per-unit-test rather than global.
Most tests don't need it, so it's only invoked in a few.

1 files changed, 43 insertions, 34 deletions

diff --git a/src/db.cpp b/src/db.cpp
index 3246e4b67a..36946b7dcc 100644
--- a/src/db.cpp
+++ b/src/db.cpp
@@ -39,22 +39,31 @@ void CDBEnv::EnvShutdown()
         return;
 
     fDbEnvInit = false;
-    int ret = dbenv.close(0);
+    int ret = dbenv->close(0);
     if (ret != 0)
         LogPrintf("CDBEnv::EnvShutdown: Error %d shutting down database environment: %s\n", ret, DbEnv::strerror(ret));
     if (!fMockDb)
         DbEnv(0).remove(path.string().c_str(), 0);
 }
 
-CDBEnv::CDBEnv() : dbenv(DB_CXX_NO_EXCEPTIONS)
+void CDBEnv::Reset()
 {
+    delete dbenv;
+    dbenv = new DbEnv(DB_CXX_NO_EXCEPTIONS);
     fDbEnvInit = false;
     fMockDb = false;
 }
 
+CDBEnv::CDBEnv() : dbenv(NULL)
+{
+    Reset();
+}
+
 CDBEnv::~CDBEnv()
 {
     EnvShutdown();
+    delete dbenv;
+    dbenv = NULL;
 }
 
 void CDBEnv::Close()
@@ -79,17 +88,17 @@ bool CDBEnv::Open(const boost::filesystem::path& pathIn)
     if (GetBoolArg("-privdb", true))
         nEnvFlags |= DB_PRIVATE;
 
-    dbenv.set_lg_dir(pathLogDir.string().c_str());
-    dbenv.set_cachesize(0, 0x100000, 1); // 1 MiB should be enough for just the wallet
-    dbenv.set_lg_bsize(0x10000);
-    dbenv.set_lg_max(1048576);
-    dbenv.set_lk_max_locks(40000);
-    dbenv.set_lk_max_objects(40000);
-    dbenv.set_errfile(fopen(pathErrorFile.string().c_str(), "a")); /// debug
-    dbenv.set_flags(DB_AUTO_COMMIT, 1);
-    dbenv.set_flags(DB_TXN_WRITE_NOSYNC, 1);
-    dbenv.log_set_config(DB_LOG_AUTO_REMOVE, 1);
-    int ret = dbenv.open(path.string().c_str(),
+    dbenv->set_lg_dir(pathLogDir.string().c_str());
+    dbenv->set_cachesize(0, 0x100000, 1); // 1 MiB should be enough for just the wallet
+    dbenv->set_lg_bsize(0x10000);
+    dbenv->set_lg_max(1048576);
+    dbenv->set_lk_max_locks(40000);
+    dbenv->set_lk_max_objects(40000);
+    dbenv->set_errfile(fopen(pathErrorFile.string().c_str(), "a")); /// debug
+    dbenv->set_flags(DB_AUTO_COMMIT, 1);
+    dbenv->set_flags(DB_TXN_WRITE_NOSYNC, 1);
+    dbenv->log_set_config(DB_LOG_AUTO_REMOVE, 1);
+    int ret = dbenv->open(path.string().c_str(),
                          DB_CREATE |
                              DB_INIT_LOCK |
                              DB_INIT_LOG |
@@ -116,14 +125,14 @@ void CDBEnv::MakeMock()
 
     LogPrint("db", "CDBEnv::MakeMock\n");
 
-    dbenv.set_cachesize(1, 0, 1);
-    dbenv.set_lg_bsize(10485760 * 4);
-    dbenv.set_lg_max(10485760);
-    dbenv.set_lk_max_locks(10000);
-    dbenv.set_lk_max_objects(10000);
-    dbenv.set_flags(DB_AUTO_COMMIT, 1);
-    dbenv.log_set_config(DB_LOG_IN_MEMORY, 1);
-    int ret = dbenv.open(NULL,
+    dbenv->set_cachesize(1, 0, 1);
+    dbenv->set_lg_bsize(10485760 * 4);
+    dbenv->set_lg_max(10485760);
+    dbenv->set_lk_max_locks(10000);
+    dbenv->set_lk_max_objects(10000);
+    dbenv->set_flags(DB_AUTO_COMMIT, 1);
+    dbenv->log_set_config(DB_LOG_IN_MEMORY, 1);
+    int ret = dbenv->open(NULL,
                          DB_CREATE |
                              DB_INIT_LOCK |
                              DB_INIT_LOG |
@@ -144,7 +153,7 @@ CDBEnv::VerifyResult CDBEnv::Verify(std::string strFile, bool (*recoverFunc)(CDB
     LOCK(cs_db);
     assert(mapFileUseCount.count(strFile) == 0);
 
-    Db db(&dbenv, 0);
+    Db db(dbenv, 0);
     int result = db.verify(strFile.c_str(), NULL, NULL, 0);
     if (result == 0)
         return VERIFY_OK;
@@ -167,7 +176,7 @@ bool CDBEnv::Salvage(std::string strFile, bool fAggressive, std::vector<CDBEnv::
 
     stringstream strDump;
 
-    Db db(&dbenv, 0);
+    Db db(dbenv, 0);
     int result = db.verify(strFile.c_str(), NULL, &strDump, flags);
     if (result == DB_VERIFY_BAD) {
         LogPrintf("CDBEnv::Salvage: Database salvage found errors, all data may not be recoverable.\n");
@@ -208,10 +217,10 @@ bool CDBEnv::Salvage(std::string strFile, bool fAggressive, std::vector<CDBEnv::
 
 void CDBEnv::CheckpointLSN(const std::string& strFile)
 {
-    dbenv.txn_checkpoint(0, 0, 0);
+    dbenv->txn_checkpoint(0, 0, 0);
     if (fMockDb)
         return;
-    dbenv.lsn_reset(strFile.c_str(), 0);
+    dbenv->lsn_reset(strFile.c_str(), 0);
 }
 
 
@@ -237,7 +246,7 @@ CDB::CDB(const std::string& strFilename, const char* pszMode, bool fFlushOnClose
         ++bitdb.mapFileUseCount[strFile];
         pdb = bitdb.mapDb[strFile];
         if (pdb == NULL) {
-            pdb = new Db(&bitdb.dbenv, 0);
+            pdb = new Db(bitdb.dbenv, 0);
 
             bool fMockDb = bitdb.IsMock();
             if (fMockDb) {
@@ -284,7 +293,7 @@ void CDB::Flush()
     if (fReadOnly)
         nMinutes = 1;
 
-    bitdb.dbenv.txn_checkpoint(nMinutes ? GetArg("-dblogsize", 100) * 1024 : 0, nMinutes, 0);
+    bitdb.dbenv->txn_checkpoint(nMinutes ? GetArg("-dblogsize", 100) * 1024 : 0, nMinutes, 0);
 }
 
 void CDB::Close()
@@ -324,7 +333,7 @@ bool CDBEnv::RemoveDb(const string& strFile)
     this->CloseDb(strFile);
 
     LOCK(cs_db);
-    int rc = dbenv.dbremove(NULL, strFile.c_str(), NULL, DB_AUTO_COMMIT);
+    int rc = dbenv->dbremove(NULL, strFile.c_str(), NULL, DB_AUTO_COMMIT);
     return (rc == 0);
 }
 
@@ -344,7 +353,7 @@ bool CDB::Rewrite(const string& strFile, const char* pszSkip)
                 string strFileRes = strFile + ".rewrite";
                 { // surround usage of db with extra {}
                     CDB db(strFile.c_str(), "r");
-                    Db* pdbCopy = new Db(&bitdb.dbenv, 0);
+                    Db* pdbCopy = new Db(bitdb.dbenv, 0);
 
                     int ret = pdbCopy->open(NULL,               // Txn pointer
                                             strFileRes.c_str(), // Filename
@@ -394,10 +403,10 @@ bool CDB::Rewrite(const string& strFile, const char* pszSkip)
                     }
                 }
                 if (fSuccess) {
-                    Db dbA(&bitdb.dbenv, 0);
+                    Db dbA(bitdb.dbenv, 0);
                     if (dbA.remove(strFile.c_str(), NULL, 0))
                         fSuccess = false;
-                    Db dbB(&bitdb.dbenv, 0);
+                    Db dbB(bitdb.dbenv, 0);
                     if (dbB.rename(strFileRes.c_str(), NULL, strFile.c_str(), 0))
                         fSuccess = false;
                 }
@@ -430,10 +439,10 @@ void CDBEnv::Flush(bool fShutdown)
                 // Move log data to the dat file
                 CloseDb(strFile);
                 LogPrint("db", "CDBEnv::Flush: %s checkpoint\n", strFile);
-                dbenv.txn_checkpoint(0, 0, 0);
+                dbenv->txn_checkpoint(0, 0, 0);
                 LogPrint("db", "CDBEnv::Flush: %s detach\n", strFile);
                 if (!fMockDb)
-                    dbenv.lsn_reset(strFile.c_str(), 0);
+                    dbenv->lsn_reset(strFile.c_str(), 0);
                 LogPrint("db", "CDBEnv::Flush: %s closed\n", strFile);
                 mapFileUseCount.erase(mi++);
             } else
@@ -443,7 +452,7 @@ void CDBEnv::Flush(bool fShutdown)
         if (fShutdown) {
             char** listp;
             if (mapFileUseCount.empty()) {
-                dbenv.log_archive(&listp, DB_ARCH_REMOVE);
+                dbenv->log_archive(&listp, DB_ARCH_REMOVE);
                 Close();
                 if (!fMockDb)
                     boost::filesystem::remove_all(path / "database");