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-rw-r--r--src/db.cpp182
1 files changed, 97 insertions, 85 deletions
diff --git a/src/db.cpp b/src/db.cpp
index 5c169fe0ca..95220059d0 100644
--- a/src/db.cpp
+++ b/src/db.cpp
@@ -26,14 +26,9 @@ unsigned int nWalletDBUpdated;
// CDB
//
-CCriticalSection cs_db;
-static bool fDbEnvInit = false;
-bool fDetachDB = false;
-DbEnv dbenv(0);
-map<string, int> mapFileUseCount;
-static map<string, Db*> mapDb;
-
-static void EnvShutdown()
+CDBEnv bitdb;
+
+void CDBEnv::EnvShutdown()
{
if (!fDbEnvInit)
return;
@@ -50,21 +45,76 @@ static void EnvShutdown()
DbEnv(0).remove(GetDataDir().string().c_str(), 0);
}
-class CDBInit
+CDBEnv::CDBEnv() : dbenv(0)
{
-public:
- CDBInit()
- {
- }
- ~CDBInit()
- {
- EnvShutdown();
- }
}
-instance_of_cdbinit;
+
+CDBEnv::~CDBEnv()
+{
+ EnvShutdown();
+}
+
+void CDBEnv::Close()
+{
+ EnvShutdown();
+}
+
+bool CDBEnv::Open(boost::filesystem::path pathEnv_)
+{
+ if (fDbEnvInit)
+ return true;
+
+ if (fShutdown)
+ return false;
+
+ pathEnv = pathEnv_;
+ filesystem::path pathDataDir = pathEnv;
+ filesystem::path pathLogDir = pathDataDir / "database";
+ filesystem::create_directory(pathLogDir);
+ filesystem::path pathErrorFile = pathDataDir / "db.log";
+ printf("dbenv.open LogDir=%s ErrorFile=%s\n", pathLogDir.string().c_str(), pathErrorFile.string().c_str());
+
+ unsigned int nEnvFlags = 0;
+ if (GetBoolArg("-privdb", true))
+ nEnvFlags |= DB_PRIVATE;
+
+ int nDbCache = GetArg("-dbcache", 25);
+ dbenv.set_lg_dir(pathLogDir.string().c_str());
+ dbenv.set_cachesize(nDbCache / 1024, (nDbCache % 1024)*1048576, 1);
+ dbenv.set_lg_bsize(1048576);
+ dbenv.set_lg_max(10485760);
+ 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_AUTO_COMMIT, 1);
+ dbenv.set_flags(DB_TXN_WRITE_NOSYNC, 1);
+ dbenv.log_set_config(DB_LOG_AUTO_REMOVE, 1);
+ int ret = dbenv.open(pathDataDir.string().c_str(),
+ DB_CREATE |
+ DB_INIT_LOCK |
+ DB_INIT_LOG |
+ DB_INIT_MPOOL |
+ DB_INIT_TXN |
+ DB_THREAD |
+ DB_RECOVER |
+ nEnvFlags,
+ S_IRUSR | S_IWUSR);
+ if (ret > 0)
+ return error("CDB() : error %d opening database environment", ret);
+
+ fDbEnvInit = true;
+ return true;
+}
+
+void CDBEnv::CheckpointLSN(std::string strFile)
+{
+ dbenv.txn_checkpoint(0, 0, 0);
+ dbenv.lsn_reset(strFile.c_str(), 0);
+}
-CDB::CDB(const char *pszFile, const char* pszMode) : pdb(NULL)
+CDB::CDB(const char *pszFile, const char* pszMode) :
+ pdb(NULL), activeTxn(NULL)
{
int ret;
if (pszFile == NULL)
@@ -76,54 +126,17 @@ CDB::CDB(const char *pszFile, const char* pszMode) : pdb(NULL)
if (fCreate)
nFlags |= DB_CREATE;
- unsigned int nEnvFlags = 0;
- if (GetBoolArg("-privdb", true))
- nEnvFlags |= DB_PRIVATE;
-
{
- LOCK(cs_db);
- if (!fDbEnvInit)
- {
- if (fShutdown)
- return;
- filesystem::path pathDataDir = GetDataDir();
- filesystem::path pathLogDir = pathDataDir / "database";
- filesystem::create_directory(pathLogDir);
- filesystem::path pathErrorFile = pathDataDir / "db.log";
- printf("dbenv.open LogDir=%s ErrorFile=%s\n", pathLogDir.string().c_str(), pathErrorFile.string().c_str());
-
- int nDbCache = GetArg("-dbcache", 25);
- dbenv.set_lg_dir(pathLogDir.string().c_str());
- dbenv.set_cachesize(nDbCache / 1024, (nDbCache % 1024)*1048576, 1);
- dbenv.set_lg_bsize(1048576);
- dbenv.set_lg_max(10485760);
- 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(),
- DB_CREATE |
- DB_INIT_LOCK |
- DB_INIT_LOG |
- DB_INIT_MPOOL |
- DB_INIT_TXN |
- DB_THREAD |
- DB_RECOVER |
- nEnvFlags,
- S_IRUSR | S_IWUSR);
- if (ret > 0)
- throw runtime_error(strprintf("CDB() : error %d opening database environment", ret));
- fDbEnvInit = true;
- }
+ LOCK(bitdb.cs_db);
+ if (!bitdb.Open(GetDataDir()))
+ throw runtime_error("env open failed");
strFile = pszFile;
- ++mapFileUseCount[strFile];
- pdb = mapDb[strFile];
+ ++bitdb.mapFileUseCount[strFile];
+ pdb = bitdb.mapDb[strFile];
if (pdb == NULL)
{
- pdb = new Db(&dbenv, 0);
+ pdb = new Db(&bitdb.dbenv, 0);
ret = pdb->open(NULL, // Txn pointer
pszFile, // Filename
@@ -137,8 +150,8 @@ CDB::CDB(const char *pszFile, const char* pszMode) : pdb(NULL)
delete pdb;
pdb = NULL;
{
- LOCK(cs_db);
- --mapFileUseCount[strFile];
+ LOCK(bitdb.cs_db);
+ --bitdb.mapFileUseCount[strFile];
}
strFile = "";
throw runtime_error(strprintf("CDB() : can't open database file %s, error %d", pszFile, ret));
@@ -152,7 +165,7 @@ CDB::CDB(const char *pszFile, const char* pszMode) : pdb(NULL)
fReadOnly = fTmp;
}
- mapDb[strFile] = pdb;
+ bitdb.mapDb[strFile] = pdb;
}
}
}
@@ -161,9 +174,9 @@ void CDB::Close()
{
if (!pdb)
return;
- if (!vTxn.empty())
- vTxn.front()->abort();
- vTxn.clear();
+ if (activeTxn)
+ activeTxn->abort();
+ activeTxn = NULL;
pdb = NULL;
// Flush database activity from memory pool to disk log
@@ -175,15 +188,15 @@ void CDB::Close()
if (strFile == "blkindex.dat" && IsInitialBlockDownload())
nMinutes = 5;
- dbenv.txn_checkpoint(nMinutes ? GetArg("-dblogsize", 100)*1024 : 0, nMinutes, 0);
+ bitdb.dbenv.txn_checkpoint(nMinutes ? GetArg("-dblogsize", 100)*1024 : 0, nMinutes, 0);
{
- LOCK(cs_db);
- --mapFileUseCount[strFile];
+ LOCK(bitdb.cs_db);
+ --bitdb.mapFileUseCount[strFile];
}
}
-void CloseDb(const string& strFile)
+void CDBEnv::CloseDb(const string& strFile)
{
{
LOCK(cs_db);
@@ -203,21 +216,20 @@ bool CDB::Rewrite(const string& strFile, const char* pszSkip)
while (!fShutdown)
{
{
- LOCK(cs_db);
- if (!mapFileUseCount.count(strFile) || mapFileUseCount[strFile] == 0)
+ LOCK(bitdb.cs_db);
+ if (!bitdb.mapFileUseCount.count(strFile) || bitdb.mapFileUseCount[strFile] == 0)
{
// Flush log data to the dat file
- CloseDb(strFile);
- dbenv.txn_checkpoint(0, 0, 0);
- dbenv.lsn_reset(strFile.c_str(), 0);
- mapFileUseCount.erase(strFile);
+ bitdb.CloseDb(strFile);
+ bitdb.CheckpointLSN(strFile);
+ bitdb.mapFileUseCount.erase(strFile);
bool fSuccess = true;
printf("Rewriting %s...\n", strFile.c_str());
string strFileRes = strFile + ".rewrite";
{ // surround usage of db with extra {}
CDB db(strFile.c_str(), "r");
- Db* pdbCopy = new Db(&dbenv, 0);
+ Db* pdbCopy = new Db(&bitdb.dbenv, 0);
int ret = pdbCopy->open(NULL, // Txn pointer
strFileRes.c_str(), // Filename
@@ -267,7 +279,7 @@ bool CDB::Rewrite(const string& strFile, const char* pszSkip)
if (fSuccess)
{
db.Close();
- CloseDb(strFile);
+ bitdb.CloseDb(strFile);
if (pdbCopy->close(0))
fSuccess = false;
delete pdbCopy;
@@ -275,10 +287,10 @@ bool CDB::Rewrite(const string& strFile, const char* pszSkip)
}
if (fSuccess)
{
- Db dbA(&dbenv, 0);
+ Db dbA(&bitdb.dbenv, 0);
if (dbA.remove(strFile.c_str(), NULL, 0))
fSuccess = false;
- Db dbB(&dbenv, 0);
+ Db dbB(&bitdb.dbenv, 0);
if (dbB.rename(strFileRes.c_str(), NULL, strFile.c_str(), 0))
fSuccess = false;
}
@@ -293,12 +305,12 @@ bool CDB::Rewrite(const string& strFile, const char* pszSkip)
}
-void DBFlush(bool fShutdown)
+void CDBEnv::Flush(bool fShutdown)
{
int64 nStart = GetTimeMillis();
// Flush log data to the actual data file
// on all files that are not in use
- printf("DBFlush(%s)%s\n", fShutdown ? "true" : "false", fDbEnvInit ? "" : " db not started");
+ printf("Flush(%s)%s\n", fShutdown ? "true" : "false", fDbEnvInit ? "" : " db not started");
if (!fDbEnvInit)
return;
{
@@ -332,7 +344,7 @@ void DBFlush(bool fShutdown)
if (mapFileUseCount.empty())
{
dbenv.log_archive(&listp, DB_ARCH_REMOVE);
- EnvShutdown();
+ Close();
}
}
}
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-14 16:09:08 +0000