public ReadStatus Get(ref Lsn lsn, ref DbEntry data, GetMode mode)
{
DbRetVal ret;
lock (rscLock) {
DB_LOGC *logcp = CheckDisposed();
fixed(byte *dataBufP = data.Buffer)
{
data.dbt.data = dataBufP + data.Start;
ret = LogcGet(logcp, ref lsn.lsn, ref data.dbt, unchecked ((UInt32)mode));
}
}
switch (ret)
{
case DbRetVal.NOTFOUND: break;
case DbRetVal.BUFFER_SMALL: break;
default:
Util.CheckRetVal(ret);
break;
}
data.SetReturnType(DbType.Unknown, 0);
return((ReadStatus)ret);
}
public ReadStatus Get(ref Lsn lsn, ref DbEntry data, GetMode mode) {
DbRetVal ret;
lock (rscLock) {
DB_LOGC* logcp = CheckDisposed();
fixed (byte* dataBufP = data.Buffer) {
data.dbt.data = dataBufP + data.Start;
ret = LogcGet(logcp, ref lsn.lsn, ref data.dbt, unchecked((UInt32)mode));
}
}
switch (ret) {
case DbRetVal.NOTFOUND: break;
case DbRetVal.BUFFER_SMALL: break;
default:
Util.CheckRetVal(ret);
break;
}
data.SetReturnType(DbType.Unknown, 0);
return (ReadStatus)ret;
}
public static unsafe int Compare(Lsn lsn0, Lsn lsn1)
{
return(LibDb.log_compare(&lsn0.lsn, &lsn1.lsn));
}
public static unsafe int Compare(Lsn lsn0, Lsn lsn1) {
return LibDb.log_compare(&lsn0.lsn, &lsn1.lsn);
}
public void LogFlush(Lsn? lsn) {
DbRetVal ret;
lock (rscLock) {
DB_ENV* evp = CheckDisposed();
DB_LSN dbLsn = lsn.GetValueOrDefault().lsn;
ret = evp->LogFlush(evp, lsn == null ? null : &dbLsn);
}
Util.CheckRetVal(ret);
}
public string LogFile(Lsn lsn) {
byte* filep = stackalloc byte[MaxLogFileNameLen];
lock (rscLock) {
DB_ENV* evp = CheckDisposed();
DbRetVal ret = evp->LogFile(evp, ref lsn.lsn, filep, MaxLogFileNameLen);
Util.CheckRetVal(ret);
return Util.Utf8PtrToString(filep);
}
}
static DbRetVal AppRecoverWrapCLS(DB_ENV* evp, ref DBT logrec, DB_LSN* lsnp, DB_RECOPS op) {
Env env = null;
try {
env = (Env)((GCHandle)evp->api_internal).Target;
// construct DbEntry for log_rec
int size = unchecked((int)logrec.size);
// we are not using a shared buffer - the call-back might take
// a long time and we do not want to lock the buffer that long
byte[] buffer = new byte[size];
Marshal.Copy((IntPtr)logrec.data, buffer, 0, size);
DbEntry logEntry = DbEntry.InOut(buffer, 0, size);
logEntry.dbt.flags = logrec.flags;
logEntry.dbt.dlen = logrec.dlen;
logEntry.dbt.doff = logrec.doff;
// construct Lsn
Lsn? lsn;
if (lsnp == null) lsn = null; else lsn = new Lsn(*lsnp);
// call CLS compliant delegate - we assume it is not null
CallbackStatus cs = env.appRecoverCLS(env, ref logEntry, lsn, (RecoveryOps)op);
return cs == CallbackStatus.Success ? DbRetVal.SUCCESS : DbRetVal.APP_RECOVER_FAILED;
}
catch (Exception ex) {
Trace.WriteLine(ex.Message, "TxnRecover");
return DbRetVal.APP_RECOVER_FAILED;
}
}
static DbRetVal RepSendWrapCLS(
DB_ENV* evp,
ref DBT control,
ref DBT rec,
DB_LSN* lsnp,
int envid,
uint flags)
{
Env env = null;
try {
env = Util.GetEnv(evp);
lock (env.callBackLock) {
// construct DbEntry for control
int size = unchecked((int)control.size);
if (size > env.callBackBuffer1.Length)
env.callBackBuffer1 = new byte[size];
Marshal.Copy((IntPtr)control.data, env.callBackBuffer1, 0, size);
DbEntry ctrlEntry = DbEntry.InOut(env.callBackBuffer1, 0, size);
// construct DbEntry for rec
size = unchecked((int)rec.size);
if (size > env.callBackBuffer2.Length)
env.callBackBuffer2 = new byte[size];
Marshal.Copy((IntPtr)rec.data, env.callBackBuffer2, 0, size);
DbEntry recEntry = DbEntry.InOut(env.callBackBuffer2, 0, size);
// construct Lsn
Lsn? lsn;
if (lsnp == null) lsn = null; else lsn = new Lsn(*lsnp);
// call CLS compliant delegate - we assume it is not null
CallbackStatus cs = env.repSendCLS(
env, ref ctrlEntry, ref recEntry, lsn, envid, unchecked((RepSendFlags)flags));
return cs == CallbackStatus.Success ? DbRetVal.SUCCESS : DbRetVal.REPSEND_FAILED;
}
}
catch (Exception ex) {
Trace.WriteLine(ex.Message, "RepSend");
if (env != null)
env.Error((int)DbRetVal.REPSEND_FAILED, ex.Message);
else
evp->Err(evp, (int)DbRetVal.REPSEND_FAILED, null);
return DbRetVal.REPSEND_FAILED;
}
}
public RepStatus RepProcessMessage(ref DbEntry control, ref DbEntry rec, ref int envId, ref Lsn retLsn) {
DbRetVal ret;
DB_LSN lsn;
lock (rscLock) {
DB_ENV* evp = CheckDisposed();
ret = evp->RepProcessMessage(evp, ref control.dbt, ref rec.dbt, ref envId, out lsn);
}
switch (ret) {
case DbRetVal.SUCCESS:
break;
case DbRetVal.REP_DUPMASTER:
break;
case DbRetVal.REP_HOLDELECTION:
break;
#if BDB_4_5_20
case DbRetVal.REP_IGNORE:
break;
#endif
case DbRetVal.REP_ISPERM:
retLsn.lsn = lsn;
break;
#if BDB_4_5_20
case DbRetVal.REP_JOIN_FAILURE:
break;
#endif
case DbRetVal.REP_NEWMASTER:
break;
case DbRetVal.REP_NEWSITE:
break;
case DbRetVal.REP_NOTPERM:
retLsn.lsn = lsn;
break;
#if BDB_4_3_29
case DbRetVal.REP_STARTUPDONE:
break;
#endif
default:
Util.CheckRetVal(ret);
break;
}
return (RepStatus)ret;
}
