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author | Ulrich Drepper <drepper@redhat.com> | 1999-06-13 13:36:34 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1999-06-13 13:36:34 +0000 |
commit | ec239360d13518a13f572b635d036c7d10028010 (patch) | |
tree | bdb5111363f45d2107849c2456b575d72779174c /db2/xa/xa_db.c | |
parent | fc3703521650a9b6db910a50c4fc0f410496e134 (diff) | |
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Update.
* db2/Makefile (distribute): Remove files which do not exist
anymore.
Diffstat (limited to 'db2/xa/xa_db.c')
-rw-r--r-- | db2/xa/xa_db.c | 308 |
1 files changed, 308 insertions, 0 deletions
diff --git a/db2/xa/xa_db.c b/db2/xa/xa_db.c new file mode 100644 index 0000000000..4aaaeff108 --- /dev/null +++ b/db2/xa/xa_db.c @@ -0,0 +1,308 @@ +/*- + * See the file LICENSE for redistribution information. + * + * Copyright (c) 1998 + * Sleepycat Software. All rights reserved. + */ + +#include "config.h" + +#ifndef lint +static const char sccsid[] = "@(#)xa_db.c 10.6 (Sleepycat) 12/19/98"; +#endif /* not lint */ + +#ifndef NO_SYSTEM_INCLUDES +#include <sys/types.h> + +#include <errno.h> +#include <stdio.h> +#include <string.h> +#endif + +#undef stat + +#include "db_int.h" +#include "db_page.h" +#include "xa.h" +#include "xa_ext.h" +#include "db_am.h" +#include "db_ext.h" +#include "common_ext.h" + +static int __xa_c_close __P((DBC *)); +static int __xa_c_del __P((DBC *, u_int32_t)); +static int __xa_c_get __P((DBC *, DBT *, DBT *, u_int32_t)); +static int __xa_c_put __P((DBC *, DBT *, DBT *, u_int32_t)); +static int __xa_close __P((DB *, u_int32_t)); +static int __xa_cursor __P((DB *, DB_TXN *, DBC **, u_int32_t)); +static int __xa_del __P((DB *, DB_TXN *, DBT *, u_int32_t)); +static int __xa_fd __P((DB *, int *)); +static int __xa_get __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t)); +static int __xa_put __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t)); +static int __xa_stat __P((DB *, void *, void *(*)(size_t), u_int32_t)); +static int __xa_sync __P((DB *, u_int32_t)); + +int +db_xa_open(fname, type, flags, mode, dbinfo, dbpp) + const char *fname; + DBTYPE type; + u_int32_t flags; + int mode; + DB_INFO *dbinfo; + DB **dbpp; +{ + DB *dbp, *real_dbp; + DB_ENV *dbenv; + struct __rmname *rp; + int ret; + + /* + * First try to open up the underlying DB. + * + * !!! + * The dbenv argument is taken from the global list of environments. + * When the transaction manager called xa_start() (__db_xa_start()), + * the "current" DB environment was moved to the start of the list. + * However, if we were called in a tpsvrinit function (which is + * entirely plausible), then it's possible that xa_open was called + * (which simply recorded the name of the environment to open) and + * this is the next call into DB. In that case, we still have to + * open the environment. + * + * The way that we know that xa_open and nothing else was called + * is because the nameq is not NULL. + */ + if ((rp = TAILQ_FIRST(&DB_GLOBAL(db_nameq))) != NULL && + (ret = __db_rmid_to_env(rp->rmid, &dbenv, 1)) != 0) + return (ret); + + dbenv = TAILQ_FIRST(&DB_GLOBAL(db_envq)); + if ((ret = db_open(fname, + type, flags, mode, dbenv, dbinfo, &real_dbp)) != 0) + return (ret); + + /* + * Allocate our own DB handle, and copy the exported fields and + * function pointers into it. The internal pointer references + * the real underlying DB handle. + */ + if ((ret = __os_calloc(1, sizeof(DB), &dbp)) != 0) { + (void)real_dbp->close(real_dbp, 0); + return (ret); + } + dbp->type = real_dbp->type; + dbp->byteswapped = real_dbp->byteswapped; + dbp->dbenv = dbenv; + dbp->internal = real_dbp; + TAILQ_INIT(&dbp->active_queue); + TAILQ_INIT(&dbp->free_queue); + dbp->close = __xa_close; + dbp->cursor = __xa_cursor; + dbp->del = __xa_del; + dbp->fd = __xa_fd; + dbp->get = __xa_get; + dbp->join = real_dbp->join; + dbp->put = __xa_put; + dbp->stat = __xa_stat; + dbp->sync = __xa_sync; + + *dbpp = dbp; + return (0); +} + +static int +__xa_close(dbp, flags) + DB *dbp; + u_int32_t flags; +{ + DB *real_dbp; + DBC *dbc; + int ret; + + /* Close any associated cursors. */ + while ((dbc = TAILQ_FIRST(&dbp->active_queue)) != NULL) + (void)dbc->c_close(dbc); + + /* Close the DB handle. */ + real_dbp = (DB *)dbp->internal; + ret = real_dbp->close(real_dbp, flags); + + __os_free(dbp, sizeof(DB)); + return (ret); +} + +static int +__xa_cursor(dbp, txn, dbcp, flags) + DB *dbp; + DB_TXN *txn; + DBC **dbcp; + u_int32_t flags; +{ + DB *real_dbp; + DBC *real_dbc, *dbc; + int ret; + + real_dbp = (DB *)dbp->internal; + txn = dbp->dbenv->xa_txn; + + if ((ret = real_dbp->cursor(real_dbp, txn, &real_dbc, flags)) != 0) + return (ret); + + /* + * Allocate our own DBC handle, and copy the exported fields and + * function pointers into it. The internal pointer references + * the real underlying DBC handle. + */ + if ((ret = __os_calloc(1, sizeof(DBC), &dbc)) != 0) { + (void)real_dbc->c_close(real_dbc); + return (ret); + } + dbc->dbp = dbp; + dbc->c_close = __xa_c_close; + dbc->c_del = __xa_c_del; + dbc->c_get = __xa_c_get; + dbc->c_put = __xa_c_put; + dbc->internal = real_dbc; + TAILQ_INSERT_TAIL(&dbp->active_queue, dbc, links); + + *dbcp = dbc; + return (0); +} + +static int +__xa_fd(dbp, fdp) + DB *dbp; + int *fdp; +{ + DB *real_dbp; + + COMPQUIET(fdp, NULL); + + real_dbp = (DB *)dbp->internal; + return (__db_eopnotsup(real_dbp->dbenv)); +} + +static int +__xa_del(dbp, txn, key, flags) + DB *dbp; + DB_TXN *txn; + DBT *key; + u_int32_t flags; +{ + DB *real_dbp; + + real_dbp = (DB *)dbp->internal; + txn = dbp->dbenv->xa_txn; + + return (real_dbp->del(real_dbp, txn, key, flags)); +} + +static int +__xa_get(dbp, txn, key, data, flags) + DB *dbp; + DB_TXN *txn; + DBT *key; + DBT *data; + u_int32_t flags; +{ + DB *real_dbp; + + real_dbp = (DB *)dbp->internal; + txn = dbp->dbenv->xa_txn; + + return (real_dbp->get(real_dbp, txn, key, data, flags)); +} + +static int +__xa_put(dbp, txn, key, data, flags) + DB *dbp; + DB_TXN *txn; + DBT *key; + DBT *data; + u_int32_t flags; +{ + DB *real_dbp; + + real_dbp = (DB *)dbp->internal; + txn = dbp->dbenv->xa_txn; + + return (real_dbp->put(real_dbp, txn, key, data, flags)); +} + +static int +__xa_stat(dbp, spp, db_malloc, flags) + DB *dbp; + void *spp; + void *(*db_malloc) __P((size_t)); + u_int32_t flags; +{ + DB *real_dbp; + + real_dbp = (DB *)dbp->internal; + return (real_dbp->stat(real_dbp, spp, db_malloc, flags)); +} + +static int +__xa_sync(dbp, flags) + DB *dbp; + u_int32_t flags; +{ + DB *real_dbp; + + real_dbp = (DB *)dbp->internal; + return (real_dbp->sync(real_dbp, flags)); +} + +static int +__xa_c_close(dbc) + DBC *dbc; +{ + DBC *real_dbc; + int ret; + + real_dbc = (DBC *)dbc->internal; + + ret = real_dbc->c_close(real_dbc); + + TAILQ_REMOVE(&dbc->dbp->active_queue, dbc, links); + __os_free(dbc, sizeof(DBC)); + + return (ret); +} + +static int +__xa_c_del(dbc, flags) + DBC *dbc; + u_int32_t flags; +{ + DBC *real_dbc; + + real_dbc = (DBC *)dbc->internal; + return (real_dbc->c_del(real_dbc, flags)); +} + +static int +__xa_c_get(dbc, key, data, flags) + DBC *dbc; + DBT *key; + DBT *data; + u_int32_t flags; +{ + DBC *real_dbc; + + real_dbc = (DBC *)dbc->internal; + return (real_dbc->c_get(real_dbc, key, data, flags)); +} + +static int +__xa_c_put(dbc, key, data, flags) + DBC *dbc; + DBT *key; + DBT *data; + u_int32_t flags; +{ + DBC *real_dbc; + + real_dbc = (DBC *)dbc->internal; + return (real_dbc->c_put(real_dbc, key, data, flags)); +} |