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C++ DB_TXN类代码示例

本文整理汇总了C++中DB_TXN类的典型用法代码示例。如果您正苦于以下问题：C++ DB_TXN类的具体用法？C++ DB_TXN怎么用？C++ DB_TXN使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。


在下文中一共展示了DB_TXN类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: id

u_int32_t DbTxn::id()
{
	DB_TXN *txn;

	txn = unwrap(this);
	return (txn->id(txn));		// no error
}
开发者ID:Wushaowei001，项目名称:omnibus，代码行数:7，代码来源:cxx_txn.cpp

示例2: txn_op_getId

static int txn_op_getId(lua_State *L)
{
    DB_TXN** ptx = check_txn(L, 1);
    DB_TXN* tx = *ptx;
    lua_Number id = tx->id(tx);
    lua_pushnumber(L, id);
    return 1;
}
开发者ID:lafar6502，项目名称:luabdb，代码行数:8，代码来源:txn_ops.c

示例3: bdb_create_queue

int bdb_create_queue(char *queue_name) {
    pthread_rwlock_wrlock(&qlist_ht_lock);

    char *k = strdup(queue_name);
    assert(k != NULL);
    queue_t *q = (queue_t *)calloc(1, sizeof(queue_t));
    assert(q != NULL);

    q->dbp = NULL;
    q->set_hits = q->old_set_hits = 0;
    q->get_hits = q->old_get_hits = 0;
    pthread_mutex_init(&(q->lock), NULL);
    
    int ret;
    DB_TXN *txnp = NULL;
    ret = db_create(&(q->dbp), envp, 0);
    CHECK_DB_RET(ret);

    if (bdb_settings.q_extentsize != 0){
        ret = q->dbp->set_q_extentsize(q->dbp, bdb_settings.q_extentsize);
        CHECK_DB_RET(ret);
    }
    ret = q->dbp->set_re_len(q->dbp, bdb_settings.re_len);
    CHECK_DB_RET(ret);
    ret = q->dbp->set_pagesize(q->dbp, bdb_settings.page_size);
    CHECK_DB_RET(ret);

    ret = envp->txn_begin(envp, NULL, &txnp, 0);
    CHECK_DB_RET(ret);
    ret = q->dbp->open(q->dbp, txnp, queue_name, NULL, DB_QUEUE, DB_CREATE, 0664); 
    CHECK_DB_RET(ret);
    
    DBT dbkey,dbdata;
    qstats_t qs;
    BDB_CLEANUP_DBT();
    memset(&qs, 0, sizeof(qs));
    dbkey.data = (void *)queue_name;
    dbkey.size = strlen(queue_name)+1;
    dbdata.data = (void *)&qs;
    dbdata.size = sizeof(qstats_t);
    ret = qlist_dbp->put(qlist_dbp, txnp, &dbkey, &dbdata, 0);
    CHECK_DB_RET(ret);
    ret = txnp->commit(txnp, 0);
    CHECK_DB_RET(ret);
    int result = hashtable_insert(qlist_htp, (void *)k, (void *)q);
    assert(result != 0);
    pthread_rwlock_unlock(&qlist_ht_lock);
    return 0;
dberr:
    if (txnp != NULL){
        txnp->abort(txnp);
    }
    fprintf(stderr, "bdb_create_queue: %s %s\n", queue_name, db_strerror(ret));
    pthread_rwlock_unlock(&qlist_ht_lock);
    return -1;
}
开发者ID:lazywalker，项目名称:memcacheq，代码行数:56，代码来源:bdb.c

示例4: main

int main() {
	DB *dbp;
	DB_ENV *dbenv;
	DB_TXN *xid;
	DBT key, data;
	const unsigned int INSERT_NUM = 100;
	char value[22]; /* should be log INSERT_NUM */
	int ret, i, t_ret;

        env_dir_create();
        env_open(&dbenv);

	if ((ret = db_create(&dbp, dbenv, 0)) != 0) {
		fprintf(stderr, "db_create: %s\n", db_strerror(ret));
		exit (1);
	}

	dbenv->txn_begin(dbenv, NULL, &xid, 0);
	if ((ret = dbp->open(dbp,
					xid, DATABASE, NULL, DB_BTREE, DB_CREATE, 0664)) != 0) {
		dbp->err(dbp, ret, "%s", DATABASE);
		goto err;
	}

	memset(&key, 0, sizeof(key));
	memset(&data, 0, sizeof(data));

	key.size = sizeof(int);
	key.data = malloc(sizeof(int));
	data.data = value;

	for( i = 0; i < INSERT_NUM; i++ ) {
		*((int*)key.data) = i;
		data.size = sizeof(char)*strlen(data.data);
		sprintf(value, "value: %u\n", i);
		dbp->put(dbp, xid, &key, &data, 0);
	}

	xid->commit(xid, 0);
	dbenv->txn_begin(dbenv, NULL, &xid, 0);
	
	for( i = 0; i < INSERT_NUM; i++ ) {
		*((int*)key.data) = i;
		dbp->get(dbp, xid, &key, &data, 0);
		printf("db: %u: key retrieved: data was %s.\n", *((int*)key.data), (char *)data.data);
	}

	xid->abort(xid);

err:    if ((t_ret = dbp->close(dbp, 0)) != 0 && ret == 0)
			ret = t_ret; 


	return 0;

}
开发者ID:Zhoutall，项目名称:stasis，代码行数:56，代码来源:jbhashmany.c

示例5: pthread_rwlock_rdlock

/* if return item is not NULL, free by caller */
item *bdb_get(char *key){
    pthread_rwlock_rdlock(&qlist_ht_lock);
    item *it = NULL;
    DB_TXN *txnp = NULL;
    int ret;
    
    queue_t *q = (queue_t *)hashtable_search(qlist_htp, (void *)key);
    /* queue not exsited */
    if (q == NULL) {
        pthread_rwlock_unlock(&qlist_ht_lock);            
        return NULL;
    } else {
        DBT dbkey, dbdata;
        db_recno_t recno;

        /* first, alloc a fixed size */
        it = item_alloc2();
        if (it == 0) {
            pthread_rwlock_unlock(&qlist_ht_lock);            
            return NULL;
        }

        BDB_CLEANUP_DBT();
        dbkey.data = &recno;
        dbkey.ulen = sizeof(recno);
        dbkey.flags = DB_DBT_USERMEM;
        dbdata.ulen = bdb_settings.re_len;
        dbdata.data = it;
        dbdata.flags = DB_DBT_USERMEM;

        ret = envp->txn_begin(envp, NULL, &txnp, 0);
        CHECK_DB_RET(ret);
        ret = q->dbp->get(q->dbp, txnp, &dbkey, &dbdata, DB_CONSUME);
        CHECK_DB_RET(ret);
        ret = txnp->commit(txnp, 0);
        CHECK_DB_RET(ret);
        pthread_mutex_lock(&(q->lock));
        (q->get_hits)++;
        pthread_mutex_unlock(&(q->lock));
    }
    pthread_rwlock_unlock(&qlist_ht_lock);    
    return it;
dberr:
    item_free(it);
    it = NULL;
    if (txnp != NULL){
        txnp->abort(txnp);
    }
    if (settings.verbose > 1) {
        fprintf(stderr, "bdb_get: %s\n", db_strerror(ret));
    }
    pthread_rwlock_unlock(&qlist_ht_lock);
    return NULL;
}
开发者ID:lazywalker，项目名称:memcacheq，代码行数:55，代码来源:bdb.c

示例6: bdb_qlist_db_open

void bdb_qlist_db_open(void){
    int ret;
    DBC *cursorp = NULL;
    DB_TXN *txnp = NULL;
        
    /* Create queue.list db handle */
    ret = db_create(&qlist_dbp, envp, 0);
    CHECK_DB_RET(ret);

    /* Open and Iterate */
    ret = envp->txn_begin(envp, NULL, &txnp, 0);
    CHECK_DB_RET(ret);
    ret = qlist_dbp->open(qlist_dbp, txnp, "queue.list", NULL, DB_BTREE, DB_CREATE, 0664);
    CHECK_DB_RET(ret);
    ret = qlist_dbp->cursor(qlist_dbp, txnp, &cursorp, 0); 
    CHECK_DB_RET(ret);
    DBT dbkey, dbdata;
    char qname[512];
    qstats_t qs;
    BDB_CLEANUP_DBT();
    memset(qname, 0, 512);
    memset(&qs, 0, sizeof(qs));
    dbkey.data = (void *)qname;
    dbkey.ulen = 512;
    dbkey.flags = DB_DBT_USERMEM;
    dbdata.data = (void *)&qs;
    dbdata.ulen = sizeof(qs);
    dbdata.flags = DB_DBT_USERMEM;
    
    while ((ret = cursorp->get(cursorp, &dbkey, &dbdata, DB_NEXT)) == 0) {
        open_exsited_queue_db(txnp, qname, &qs);
    }
    if (ret != DB_NOTFOUND) {
        goto dberr;
    }
    
    ret = cursorp->close(cursorp);
    CHECK_DB_RET(ret);
    
    ret = txnp->commit(txnp, 0);
    CHECK_DB_RET(ret);
    return;
        
dberr:
    if (cursorp != NULL){
        cursorp->close(cursorp);
    }
    if (txnp != NULL){
        txnp->abort(txnp);
    }
    fprintf(stderr, "bdb_qlist_db_open: %s\n", db_strerror(ret));
    exit(EXIT_FAILURE);
}
开发者ID:lazywalker，项目名称:memcacheq，代码行数:53，代码来源:bdb.c

示例7: close_fsdb

/*
 *  Closes databases for a given filesystem.  If delete_databases is TRUE,
 *  removes the databases from the system.
 */
void
close_fsdb(char *fsname, fs_db_t *fsdb, boolean_t delete_databases)
{
	size_t		i;
	DB		*dbp;
	char		fname[MAXPATHLEN + 1];
	DB_TXN		*txn;
	int		st;

	if (fsdb == NULL) {
		return;
	}

	i = sizeof (fs_db_t) / sizeof (DB *);

	/* close secondaries first, so start from the last in the struct */
	while (i > 0) {
		i--;
		dbp = ((DB **)fsdb)[i];

		if (dbp != NULL) {
			if (dbp->fname != NULL) {
				strlcpy(fname, dbp->fname, sizeof (fname));
			} else {
				fname[0] = '\0';
			}

			/* databases must be closed before they're removed. */
			dbp->close(dbp, 0);
			((DB **)fsdb)[i] = NULL;

			if ((delete_databases) && (fname[0] != '\0')) {
				dbEnv->txn_begin(dbEnv, NULL, &txn, 0);
				dbEnv->dbremove(dbEnv, txn, fname, NULL, 0);
				txn->commit(txn, 0);
			}
		}
	}

	if (delete_databases) {
		char	namebuf[MAXPATHLEN];

		/* delete fs-specific directory */
		st = dbdir_from_fsname(fsname, namebuf, sizeof (namebuf));
		if (st == 0) {
			snprintf(fname, sizeof (fname), "%s/%s", fsmdbdir,
			    namebuf);

			(void) rmdir(fname);
		}
	}
}
开发者ID:BackupTheBerlios，项目名称:samqfs，代码行数:56，代码来源:mkdb.c

示例8: tester__gc

static int tester__gc(lua_State *L)
{
    DB_TXN** ptx = check_txn(L, 1);
    DB_TXN* tx = *ptx;
    if (tx != NULL)
    {
        dbgprint("aborting a transaction 0x%x\n", tx);
        int status = tx->abort(tx);
        *ptx = NULL;
        handle_dbexception(L, status);
    }
    return 0;
}
开发者ID:lafar6502，项目名称:luabdb，代码行数:13，代码来源:tester_ops.c

示例9: main

int main(int argc,char * argv[])
{
	int rc;
	DB_ENV *env;
	DB *dbi;
	DBT key, data;
	DB_TXN *txn;
	DBC *cursor;
	char sval[32], kval[32];

#define FLAGS (DB_INIT_LOCK|DB_INIT_LOG|DB_INIT_TXN|DB_INIT_MPOOL|DB_CREATE|DB_THREAD)
	rc = db_env_create(&env, 0);
	rc = env->open(env, "./testdb", FLAGS, 0664);
	rc = db_create(&dbi, env, 0);
	rc = env->txn_begin(env, NULL, &txn, 0);
	rc = dbi->open(dbi, txn, "test.bdb", NULL, DB_BTREE, DB_CREATE, 0664);

	memset(&key, 0, sizeof(DBT));
	memset(&data, 0, sizeof(DBT));
	key.size = sizeof(int);
	key.data = sval;
	data.size = sizeof(sval);
	data.data = sval;

	sprintf(sval, "%03x %d foo bar", 32, 3141592);
	rc = dbi->put(dbi, txn, &key, &data, 0);
	rc = txn->commit(txn, 0);
	if (rc) {
		fprintf(stderr, "txn->commit: (%d) %s\n", rc, db_strerror(rc));
		goto leave;
	}
	rc = env->txn_begin(env, NULL, &txn, 0);
	rc = dbi->cursor(dbi, txn, &cursor, 0);
	key.flags = DB_DBT_USERMEM;
	key.data = kval;
	key.ulen = sizeof(kval);
	data.flags = DB_DBT_USERMEM;
	data.data = sval;
	data.ulen = sizeof(sval);
	while ((rc = cursor->c_get(cursor, &key, &data, DB_NEXT)) == 0) {
		printf("key: %p %.*s, data: %p %.*s\n",
			key.data,  (int) key.size,  (char *) key.data,
			data.data, (int) data.size, (char *) data.data);
	}
	rc = cursor->c_close(cursor);
	rc = txn->abort(txn);
leave:
	rc = dbi->close(dbi, 0);
	rc = env->close(env, 0);
	return rc;
}
开发者ID:AUSTRALIANBITCOINS，项目名称:rippled，代码行数:51，代码来源:sample-bdb.c

示例10: db_init

/*
 * db_init --
 *	Open the database.
 */
int db_init( DB_ENV *dbenv, DB **dbpp, int dups, int pagesize)
{
    DB *dbp;
    DB_TXN *txnp;
    int ret;

    dbp = NULL;
    txnp = NULL;
    ret = 0;

    if ((ret = db_create(&dbp, dbenv, 0)) != 0) {
        fprintf(stderr,
                "%s: db_create: %s\n", progname, db_strerror(ret));
        return (ret);
    }
    dbp->set_errfile(dbp, stderr);
    dbp->set_errpfx(dbp, progname);
    if ((ret = dbp->set_pagesize(dbp, pagesize)) != 0) {
        dbp->err(dbp, ret, "set_pagesize");
        goto err;
    }
    if (dups && (ret = dbp->set_flags(dbp, DB_DUP)) != 0) {
        dbp->err(dbp, ret, "set_flags");
        goto err;
    }

    if ((ret = dbenv->txn_begin(dbenv, NULL, &txnp, 0)) != 0)
        goto err;

    if ((ret = dbp->open(dbp, txnp, "sss.db", "primary", DB_BTREE,
                         DB_CREATE , 0664)) != 0) {
        dbp->err(dbp, ret, "%s: open", "sss.db");
        goto err;
    }
    *dbpp = dbp;

    ret = txnp->commit(txnp, 0);
    txnp = NULL;
    if (ret != 0)
        goto err;

    return (0);

err:
    if (txnp != NULL)
        (void)txnp->abort(0);
    if (dbp != NULL)
        (void)dbp->close(dbp, 0);
    return (ret);
}
开发者ID:msng4t，项目名称:network-etc，代码行数:54，代码来源:Bulk.cpp

示例11: txn_op_abort

static int txn_op_abort(lua_State *L)
{
    DB_TXN** ptx = check_txn(L, 1);
    DB_TXN* tx = *ptx;
    int status;
    if (tx != NULL)
    {
        dbgprint("aborting tran 0x%x\n", tx);
        status = tx->abort(tx);
        handle_dbexception(L, status);
        *ptx = NULL;
    }
    return 0;
}
开发者ID:lafar6502，项目名称:luabdb，代码行数:14，代码来源:txn_ops.c

示例12: txn_op_setName

static int txn_op_setName(lua_State *L)
{
    DB_TXN** ptx = check_txn(L, 1);
    DB_TXN* tx = *ptx;
    u_int32_t flags = 0;
    int status;
    const char* name = lua_tostring(L, 2);
    if (tx != NULL)
    {
        status = tx->set_name(tx, name);
        handle_dbexception(L, status);
    }
    return 0;
}
开发者ID:lafar6502，项目名称:luabdb，代码行数:14，代码来源:txn_ops.c

示例13: store_tx_abort

int store_tx_abort(struct acrd_txid *tx)
{
	int ret;
	DB_TXN *tid = tx->tid;

	dprintf("tid : %p\n", tid);
	ret = tid->abort(tid);
	if (ret != 0) {
		envp->err(envp, ret, "DB_TXN->abort failed\n");
		eprintf("DB_TXN->abort failed\n");
		return -1;
	}

	return 0;
}
开发者ID:briancline，项目名称:accord，代码行数:15，代码来源:store.c

示例14: bdb_set

/* 0 for Success
   -1 for SERVER_ERROR
*/
int bdb_set(char *key, item *it){
    pthread_rwlock_rdlock(&qlist_ht_lock);
    queue_t *q = (queue_t *)hashtable_search(qlist_htp, (void *)key);
    DB_TXN *txnp = NULL;
    int ret;

    if (NULL == q) {
        pthread_rwlock_unlock(&qlist_ht_lock);
        ret = bdb_create_queue(key);
        if (0 != ret){
            return -1;
        }
        /* search again */
        pthread_rwlock_rdlock(&qlist_ht_lock);
        q = (queue_t *)hashtable_search(qlist_htp, (void *)key);        
    }
    
    if (NULL != q) {
        db_recno_t recno;
        DBT dbkey, dbdata;    
        BDB_CLEANUP_DBT();
        dbkey.data = &recno;
        dbkey.ulen = sizeof(recno);
        dbkey.flags = DB_DBT_USERMEM;
        dbdata.data = it;
        dbdata.size = ITEM_ntotal(it);
        ret = envp->txn_begin(envp, NULL, &txnp, 0);
        CHECK_DB_RET(ret);
        ret = q->dbp->put(q->dbp, txnp, &dbkey, &dbdata, DB_APPEND);
        CHECK_DB_RET(ret);
        ret = txnp->commit(txnp, 0);
        CHECK_DB_RET(ret);
        pthread_mutex_lock(&(q->lock));
        (q->set_hits)++;
        pthread_mutex_unlock(&(q->lock));
    }
    pthread_rwlock_unlock(&qlist_ht_lock);    
    return 0;
dberr:
    if (txnp != NULL){
        txnp->abort(txnp);
    }
    if (settings.verbose > 1) {
        fprintf(stderr, "bdb_set: %s\n", db_strerror(ret));
    }
    pthread_rwlock_unlock(&qlist_ht_lock);
    return -1;
}
开发者ID:lazywalker，项目名称:memcacheq，代码行数:51，代码来源:bdb.c

示例15: txn_op_getName

static int txn_op_getName(lua_State *L)
{
    DB_TXN** ptx = check_txn(L, 1);
    DB_TXN* tx = *ptx;
    u_int32_t flags = 0;
    int status;
    const char* name;
    if (tx != NULL)
    {
        status = tx->get_name(tx, &name);
        handle_dbexception(L, status);
        lua_pushstring(L, name);
        return 1;
    }
    return 0;
}
开发者ID:lafar6502，项目名称:luabdb，代码行数:16，代码来源:txn_ops.c


注：本文中的DB_TXN类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。