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Further CDBEnv encapsulation work.

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This commit is contained in:
Jeff Garzik 2012-05-18 02:49:50 -04:00 committed by Jeff Garzik
parent 94e34fa0ad
commit ffe8b77a61
3 changed files with 24 additions and 25 deletions
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24
src/db.cpp
View file

@ -27,8 +27,6 @@ unsigned int nWalletDBUpdated;
//
CDBEnv bitdb;
map<string, int> mapFileUseCount;
static map<string, Db*> mapDb;
void CDBEnv::EnvShutdown()
{
@ -129,8 +127,8 @@ CDB::CDB(const char *pszFile, const char* pszMode) :
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(&bitdb.dbenv, 0);
@ -148,7 +146,7 @@ CDB::CDB(const char *pszFile, const char* pszMode) :
pdb = NULL;
{
LOCK(bitdb.cs_db);
--mapFileUseCount[strFile];
--bitdb.mapFileUseCount[strFile];
}
strFile = "";
throw runtime_error(strprintf("CDB() : can't open database file %s, error %d", pszFile, ret));
@ -162,7 +160,7 @@ CDB::CDB(const char *pszFile, const char* pszMode) :
fReadOnly = fTmp;
}
mapDb[strFile] = pdb;
bitdb.mapDb[strFile] = pdb;
}
}
}
@ -189,14 +187,14 @@ void CDB::Close()
{
LOCK(bitdb.cs_db);
--mapFileUseCount[strFile];
--bitdb.mapFileUseCount[strFile];
}
}
void CloseDb(const string& strFile)
void CDBEnv::CloseDb(const string& strFile)
{
{
LOCK(bitdb.cs_db);
LOCK(cs_db);
if (mapDb[strFile] != NULL)
{
// Close the database handle
@ -214,12 +212,12 @@ bool CDB::Rewrite(const string& strFile, const char* pszSkip)
{
{
LOCK(bitdb.cs_db);
if (!mapFileUseCount.count(strFile) || mapFileUseCount[strFile] == 0)
if (!bitdb.mapFileUseCount.count(strFile) || bitdb.mapFileUseCount[strFile] == 0)
{
// Flush log data to the dat file
CloseDb(strFile);
bitdb.CloseDb(strFile);
bitdb.CheckpointLSN(strFile);
mapFileUseCount.erase(strFile);
bitdb.mapFileUseCount.erase(strFile);
bool fSuccess = true;
printf("Rewriting %s...\n", strFile.c_str());
@ -276,7 +274,7 @@ 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;

4
src/db.h
View file

@ -42,6 +42,8 @@ private:
public:
mutable CCriticalSection cs_db;
DbEnv dbenv;
std::map<std::string, int> mapFileUseCount;
std::map<std::string, Db*> mapDb;
CDBEnv();
~CDBEnv();
@ -51,6 +53,8 @@ public:
void CheckpointLSN(std::string strFile);
void SetDetach(bool fDetachDB_) { fDetachDB = fDetachDB_; }
void CloseDb(const std::string& strFile);
DbTxn *TxnBegin(int flags=DB_TXN_WRITE_NOSYNC)
{
DbTxn* ptxn = NULL;

21
src/walletdb.cpp
View file

@ -13,9 +13,6 @@ using namespace boost;
static uint64 nAccountingEntryNumber = 0;
extern map<string, int> mapFileUseCount;
extern void CloseDb(const string& strFile);
//
// CWalletDB
//
@ -354,8 +351,8 @@ void ThreadFlushWalletDB(void* parg)
{
// Don't do this if any databases are in use
int nRefCount = 0;
map<string, int>::iterator mi = mapFileUseCount.begin();
while (mi != mapFileUseCount.end())
map<string, int>::iterator mi = bitdb.mapFileUseCount.begin();
while (mi != bitdb.mapFileUseCount.end())
{
nRefCount += (*mi).second;
mi++;
@ -363,18 +360,18 @@ void ThreadFlushWalletDB(void* parg)
if (nRefCount == 0 && !fShutdown)
{
map<string, int>::iterator mi = mapFileUseCount.find(strFile);
if (mi != mapFileUseCount.end())
map<string, int>::iterator mi = bitdb.mapFileUseCount.find(strFile);
if (mi != bitdb.mapFileUseCount.end())
{
printf("Flushing wallet.dat\n");
nLastFlushed = nWalletDBUpdated;
int64 nStart = GetTimeMillis();
// Flush wallet.dat so it's self contained
CloseDb(strFile);
bitdb.CloseDb(strFile);
bitdb.CheckpointLSN(strFile);
mapFileUseCount.erase(mi++);
bitdb.mapFileUseCount.erase(mi++);
printf("Flushed wallet.dat %"PRI64d"ms\n", GetTimeMillis() - nStart);
}
}
@ -391,12 +388,12 @@ bool BackupWallet(const CWallet& wallet, const string& strDest)
{
{
LOCK(bitdb.cs_db);
if (!mapFileUseCount.count(wallet.strWalletFile) || mapFileUseCount[wallet.strWalletFile] == 0)
if (!bitdb.mapFileUseCount.count(wallet.strWalletFile) || bitdb.mapFileUseCount[wallet.strWalletFile] == 0)
{
// Flush log data to the dat file
CloseDb(wallet.strWalletFile);
bitdb.CloseDb(wallet.strWalletFile);
bitdb.CheckpointLSN(wallet.strWalletFile);
mapFileUseCount.erase(wallet.strWalletFile);
bitdb.mapFileUseCount.erase(wallet.strWalletFile);
// Copy wallet.dat
filesystem::path pathSrc = GetDataDir() / wallet.strWalletFile;