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111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1997-2002
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* Sleepycat Software. All rights reserved.
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*/
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#include "db_config.h"
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#ifndef lint
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static const char revid[] = "$Id: java_DbLogc.c,v 11.6 2002/07/02 12:03:03 mjc Exp $";
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#endif /* not lint */
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#include <jni.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef DIAGNOSTIC
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#include <stdio.h>
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#endif
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#include "db_int.h"
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#include "java_util.h"
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#include "com_sleepycat_db_DbLogc.h"
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JNIEXPORT void JNICALL Java_com_sleepycat_db_DbLogc_close
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(JNIEnv *jnienv, jobject jthis, jint flags)
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{
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int err;
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DB_LOGC *dblogc = get_DB_LOGC(jnienv, jthis);
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if (!verify_non_null(jnienv, dblogc))
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return;
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err = dblogc->close(dblogc, flags);
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if (verify_return(jnienv, err, 0)) {
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set_private_dbobj(jnienv, name_DB_LOGC, jthis, 0);
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}
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}
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JNIEXPORT jint JNICALL Java_com_sleepycat_db_DbLogc_get
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(JNIEnv *jnienv, jobject jthis,
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/*DbLsn*/ jobject lsn, /*Dbt*/ jobject data, jint flags)
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{
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int err, retry;
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DB_LOGC *dblogc;
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DB_LSN *dblsn;
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LOCKED_DBT ldata;
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OpKind dataop;
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/*
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* Depending on flags, the user may be supplying the key,
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* or else we may have to retrieve it.
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*/
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err = 0;
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dataop = outOp;
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dblogc = get_DB_LOGC(jnienv, jthis);
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dblsn = get_DB_LSN(jnienv, lsn);
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if (locked_dbt_get(&ldata, jnienv, dblogc->dbenv, data, dataop) != 0)
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goto out1;
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if (!verify_non_null(jnienv, dblogc))
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goto out1;
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for (retry = 0; retry < 3; retry++) {
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err = dblogc->get(dblogc, dblsn, &ldata.javainfo->dbt, flags);
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/*
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* If we failed due to lack of memory in our DBT arrays,
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* retry.
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*/
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if (err != ENOMEM)
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break;
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if (!locked_dbt_realloc(&ldata, jnienv, dblogc->dbenv))
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break;
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}
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out1:
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locked_dbt_put(&ldata, jnienv, dblogc->dbenv);
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if (!DB_RETOK_LGGET(err)) {
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if (verify_dbt(jnienv, err, &ldata))
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verify_return(jnienv, err, 0);
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}
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return (err);
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}
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JNIEXPORT void JNICALL Java_com_sleepycat_db_DbLogc_finalize
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(JNIEnv *jnienv, jobject jthis)
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{
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/*
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* Free any data related to DB_LOGC here.
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* If we ever have java-only data embedded in the DB_LOGC
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* and need to do this, we'll have to track DbLogc's
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* according to which DbEnv owns them, just as
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* we track Db's according to which DbEnv owns them.
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* That's necessary to avoid double freeing that
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* comes about when closes interact with GC.
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*/
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#ifdef DIAGNOSTIC
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DB_LOGC *dblogc;
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dblogc = get_DB_LOGC(jnienv, jthis);
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if (dblogc != NULL)
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fprintf(stderr, "Java API: DbLogc has not been closed\n");
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#else
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COMPQUIET(jnienv, NULL);
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COMPQUIET(jthis, NULL);
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#endif
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}
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