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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997, 1998
* Sleepycat Software. All rights reserved.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "@(#)java_DbTxnMgr.cpp 10.3 (Sleepycat) 10/24/98";
#endif /* not lint */
#include <jni.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "db.h"
#include "java_util.h"
#include "com_sleepycat_db_DbTxnMgr.h"
JNIEXPORT jobject JNICALL Java_com_sleepycat_db_DbTxnMgr_begin
(JNIEnv *jnienv, jobject jthis, /*DbTxn*/ jobject pid)
{
int err;
DB_TXNMGR *dbtxnmgr = get_DB_TXNMGR(jnienv, jthis);
if (!verify_non_null(jnienv, dbtxnmgr))
return 0;
DB_TXN *dbpid = get_DB_TXN(jnienv, pid);
DB_TXN *result = 0;
err = txn_begin(dbtxnmgr, dbpid, &result);
if (!verify_return(jnienv, err))
return 0;
return get_DbTxn(jnienv, result);
}
JNIEXPORT void JNICALL Java_com_sleepycat_db_DbTxnMgr_checkpoint
(JNIEnv *jnienv, jobject jthis, jint kbyte, jint min)
{
int err;
DB_TXNMGR *dbtxnmgr = get_DB_TXNMGR(jnienv, jthis);
if (!verify_non_null(jnienv, dbtxnmgr))
return;
err = txn_checkpoint(dbtxnmgr, kbyte, min);
verify_return(jnienv, err);
}
JNIEXPORT void JNICALL Java_com_sleepycat_db_DbTxnMgr_close
(JNIEnv *jnienv, jobject jthis)
{
int err;
DB_TXNMGR *dbtxnmgr = get_DB_TXNMGR(jnienv, jthis);
if (!verify_non_null(jnienv, dbtxnmgr))
return;
err = txn_close(dbtxnmgr);
if (verify_return(jnienv, err))
{
set_private_info(jnienv, name_DB_TXNMGR, jthis, 0);
}
}
JNIEXPORT jobject JNICALL Java_com_sleepycat_db_DbTxnMgr_stat
(JNIEnv *jnienv, jobject jthis)
{
int err;
DB_TXNMGR *dbtxnmgr = get_DB_TXNMGR(jnienv, jthis);
DB_TXN_STAT *statp = NULL;
jobject retval = NULL;
if (!verify_non_null(jnienv, dbtxnmgr))
return NULL;
// We cannot use the default allocator (on Win* platforms anyway)
// because it often causes problems when we free storage
// in a DLL that was allocated in another DLL. Using
// our own allocator (ours just calls malloc!) ensures
// that there is no mismatch.
//
err = txn_stat(dbtxnmgr, &statp, allocMemory);
if (verify_return(jnienv, err)) {
retval = create_default_object(jnienv, name_DB_TXN_STAT);
jclass dbclass = get_class(jnienv, name_DB_TXN_STAT);
// Set the individual fields
//TODO!
/* public static class Active {
public int txnid; // Transaction ID
public DbLsn lsn; // Lsn of the begin record
};
*/
set_lsn_field(jnienv, dbclass, retval,
"st_last_ckp", statp->st_last_ckp);
set_lsn_field(jnienv, dbclass, retval,
"st_pending_ckp", statp->st_pending_ckp);
set_long_field(jnienv, dbclass, retval,
"st_time_ckp", statp->st_time_ckp);
set_int_field(jnienv, dbclass, retval,
"st_last_txnid", statp->st_last_txnid);
set_int_field(jnienv, dbclass, retval,
"st_maxtxns", statp->st_maxtxns);
set_int_field(jnienv, dbclass, retval,
"st_naborts", statp->st_naborts);
set_int_field(jnienv, dbclass, retval,
"st_nbegins", statp->st_nbegins);
set_int_field(jnienv, dbclass, retval,
"st_ncommits", statp->st_ncommits);
set_int_field(jnienv, dbclass, retval,
"st_nactive", statp->st_nactive);
jclass active_class = get_class(jnienv, name_DB_TXN_STAT_ACTIVE);
jobjectArray actives = jnienv->NewObjectArray(statp->st_nactive,
active_class, 0);
// Set the st_txnarray field. This is a little involved
// than other fields, since the type is an array, so none
// of our utility functions help.
//
// [Lcom/sleepycat/db/DbTxnStat$Active;
//
char active_signature[512];
strcpy(active_signature, "[L");
strcat(active_signature, DB_PACKAGE_NAME);
strcat(active_signature, name_DB_TXN_STAT_ACTIVE);
strcat(active_signature, ";");
jfieldID arrid = jnienv->GetFieldID(dbclass, "st_txnarray",
active_signature);
jnienv->SetObjectField(retval, arrid, actives);
// Now fill the in the elements of st_txnarray.
//
for (int i=0; i<statp->st_nactive; i++) {
jobject obj = create_default_object(jnienv, name_DB_TXN_STAT_ACTIVE);
jnienv->SetObjectArrayElement(actives, i, obj);
set_int_field(jnienv, active_class, obj,
"txnid", statp->st_txnarray[i].txnid);
set_lsn_field(jnienv, active_class, obj,
"lsn", statp->st_txnarray[i].lsn);
}
set_int_field(jnienv, dbclass, retval,
"st_region_wait", statp->st_region_wait);
set_int_field(jnienv, dbclass, retval,
"st_region_nowait", statp->st_region_nowait);
set_int_field(jnienv, dbclass, retval,
"st_refcnt", statp->st_refcnt);
set_int_field(jnienv, dbclass, retval,
"st_regsize", statp->st_regsize);
freeMemory(statp);
}
return retval;
}
JNIEXPORT jobject JNICALL Java_com_sleepycat_db_DbTxnMgr_open
(JNIEnv *jnienv, jclass jthis_class, jstring dir,
jint flags, jint mode, jobject dbenv)
{
int err;
jobject retval = NULL;
DB_TXNMGR *dbtxnmgr;
DB_ENV *db_dbenv = get_DB_ENV(jnienv, dbenv);
LockedString dbdir(jnienv, dir);
if (verify_non_null(jnienv, db_dbenv)) {
err = txn_open(dbdir.string, flags, mode, db_dbenv, &dbtxnmgr);
if (verify_return(jnienv, err)) {
retval = create_default_object(jnienv, name_DB_TXNMGR);
set_private_info(jnienv, name_DB_TXNMGR, retval, dbtxnmgr);
}
}
return retval;
}
JNIEXPORT void JNICALL Java_com_sleepycat_db_DbTxnMgr_unlink
(JNIEnv *jnienv, jclass jthis_class, jstring dir, jint force,
/*DbEnv*/ jobject dbenv)
{
int err;
DB_ENV *db_dbenv = get_DB_ENV(jnienv, dbenv);
LockedString dbdir(jnienv, dir);
if (verify_non_null(jnienv, db_dbenv)) {
err = txn_unlink(dbdir.string, force, db_dbenv);
verify_return(jnienv, err);
}
}
JNIEXPORT void JNICALL Java_com_sleepycat_db_DbTxnMgr_finalize
(JNIEnv *jnienv, jobject jthis)
{
DB_TXNMGR *dbtxnmgr = get_DB_TXNMGR(jnienv, jthis);
if (dbtxnmgr) {
// Free any data related to DB_TXNMGR here
}
}
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