static int
kvs_cursor_reset(WT_CURSOR *wtcursor)
{
CURSOR_SOURCE *cursor;
DBC *dbc;
WT_EXTENSION_API *wt_api;
WT_SESSION *session;
int ret = 0;
session = wtcursor->session;
cursor = (CURSOR_SOURCE *)wtcursor;
wt_api = cursor->wt_api;
/* Close and re-open the Berkeley DB cursor */
if ((dbc = cursor->dbc) != NULL) {
cursor->dbc = NULL;
if ((ret = dbc->close(dbc)) != 0)
ERET(wt_api, session, WT_ERROR,
"DbCursor.close: %s", db_strerror(ret));
if ((ret = cursor->db->cursor(cursor->db, NULL, &dbc, 0)) != 0)
ERET(wt_api, session, WT_ERROR,
"Db.cursor: %s", db_strerror(ret));
cursor->dbc = dbc;
}
return (0);
}
/*
* kvs_call --
* Call a KVS function.
*/
static INLINE int
kvs_call(WT_CURSOR *wt_cursor, const char *fname,
int (*f)(kvs_t, struct kvs_record *, unsigned long, unsigned long))
{
CURSOR *cursor;
WT_SESSION *session;
kvs_t kvs;
int ret;
char *p;
cursor = (CURSOR *)wt_cursor;
session = cursor->session;
kvs = cursor->data_source->kvs;
ret = 0;
cursor->record.val = cursor->val;
restart:
if ((ret = f(kvs, &cursor->record,
(unsigned long)0, (unsigned long)cursor->val_len)) != 0) {
if (ret == KVS_E_KEY_NOT_FOUND)
return (WT_NOTFOUND);
ERET(session, WT_ERROR, "%s: %s", fname, kvs_strerror(ret));
}
/*
* If the returned length is larger than our passed-in length, we didn't
* get the complete value. Grow the buffer and use kvs_get to complete
* the retrieval (kvs_get because the call succeeded and the key was
* copied out, so calling kvs_next/kvs_prev again would skip key/value
* pairs).
*
* We have to loop, another thread of control might change the length of
* the value, requiring we grow our buffer multiple times.
*
* We have to potentially restart the entire call in case the underlying
* key/value disappears.
*/
for (;;) {
if (cursor->val_len >= cursor->record.val_len)
return (0);
/* Grow the value buffer. */
if ((p = realloc(
cursor->val, cursor->record.val_len + 32)) == NULL)
return (os_errno());
cursor->val = cursor->record.val = p;
cursor->val_len = cursor->record.val_len + 32;
if ((ret = kvs_get(kvs, &cursor->record,
(unsigned long)0, (unsigned long)cursor->val_len)) != 0) {
if (ret == KVS_E_KEY_NOT_FOUND)
goto restart;
ERET(session,
WT_ERROR, "kvs_get: %s", kvs_strerror(ret));
}
}
/* NOTREACHED */
}
static int
kvs_cursor_search(WT_CURSOR *wtcursor)
{
CURSOR_SOURCE *cursor;
DBC *dbc;
DBT *key, *value;
WT_EXTENSION_API *wt_api;
WT_SESSION *session;
int ret = 0;
session = wtcursor->session;
cursor = (CURSOR_SOURCE *)wtcursor;
wt_api = cursor->wt_api;
dbc = cursor->dbc;
key = &cursor->key;
value = &cursor->value;
if ((ret = copyin_key(wtcursor)) != 0)
return (ret);
if ((ret = dbc->get(dbc, key, value, DB_SET)) == 0) {
copyout_key(wtcursor);
copyout_value(wtcursor);
return (0);
}
if (ret == DB_NOTFOUND || ret == DB_KEYEMPTY)
return (WT_NOTFOUND);
ERET(wt_api, session, WT_ERROR, "DbCursor.get: %s", db_strerror(ret));
}
static int
kvs_cursor_update(WT_CURSOR *wtcursor)
{
CURSOR_SOURCE *cursor;
DBC *dbc;
DBT *key, *value;
WT_EXTENSION_API *wt_api;
WT_SESSION *session;
int ret = 0;
session = wtcursor->session;
cursor = (CURSOR_SOURCE *)wtcursor;
wt_api = cursor->wt_api;
dbc = cursor->dbc;
key = &cursor->key;
value = &cursor->value;
if ((ret = copyin_key(wtcursor)) != 0)
return (ret);
copyin_value(wtcursor);
if ((ret = dbc->put(dbc, key, value, DB_KEYFIRST)) != 0)
ERET(wt_api,
session, WT_ERROR, "DbCursor.put: %s", db_strerror(ret));
return (0);
}
/*
* kvs_cursor_remove --
* WT_CURSOR::remove method.
*/
static int
kvs_cursor_remove(WT_CURSOR *wt_cursor)
{
CURSOR *cursor;
WT_SESSION *session;
int ret;
cursor = (CURSOR *)wt_cursor;
session = cursor->session;
ret = 0;
/*
* WiredTiger's "remove" of a bitfield is really an update with a value
* of a single byte of zero.
*/
if (cursor->config_bitfield) {
wt_cursor->value.size = 1;
wt_cursor->value.data = "\0";
return (kvs_cursor_update(wt_cursor));
}
if ((ret = copyin_key(wt_cursor)) != 0)
return (ret);
if ((ret = kvs_del(cursor->data_source->kvs, &cursor->record)) == 0)
return (0);
if (ret == KVS_E_KEY_NOT_FOUND)
return (WT_NOTFOUND);
ERET(session, WT_ERROR, "kvs_del: %s", kvs_strerror(ret));
}
/*
* kvs_config_read --
* Read KVS configuration.
*/
static int
kvs_config_read(WT_SESSION *session, WT_CONFIG_ARG *config,
char ***devices, struct kvs_config *kvs_config, int *flagsp)
{
const KVS_OPTIONS *p;
WT_CONFIG_ITEM v;
int ret;
char *t, name[128];
*flagsp = 0; /* Clear return values */
memset(kvs_config, 0, sizeof(*kvs_config));
ret = 0;
for (p = kvs_options; p->name != NULL; ++p) {
/* Truncate the name, discarding the trailing value. */
(void)snprintf(name, sizeof(name), "%s", p->name);
if ((t = strchr(name, '=')) != NULL)
*t = '\0';
if ((ret =
wt_ext->config_get(wt_ext, session, config, name, &v)) != 0)
ERET(session, ret,
"WT_EXTENSION_API.config: %s: %s",
name, wt_ext->strerror(ret));
if (strcmp(name, "kvs_devices") == 0) {
if ((ret =
kvs_config_devices(session, &v, devices)) != 0)
return (ret);
continue;
}
#define KVS_CONFIG_SET(n, f) \
if (strcmp(name, n) == 0) { \
kvs_config->f = (unsigned long)v.val; \
continue; \
}
KVS_CONFIG_SET("kvs_parallelism", parallelism);
KVS_CONFIG_SET("kvs_granularity", granularity);
KVS_CONFIG_SET("kvs_avg_key_len", avg_key_len);
KVS_CONFIG_SET("kvs_avg_val_len", avg_val_len);
KVS_CONFIG_SET("kvs_write_bufs", write_bufs);
KVS_CONFIG_SET("kvs_read_bufs", read_bufs);
KVS_CONFIG_SET("kvs_commit_timeout", commit_timeout);
KVS_CONFIG_SET("kvs_reclaim_threshold", reclaim_threshold);
#define KVS_FLAG_SET(n, f) \
if (strcmp(name, n) == 0) { \
if (v.val != 0) \
*flagsp |= f; \
continue; \
}
KVS_FLAG_SET("kvs_open_o_debug", KVS_O_DEBUG);
KVS_FLAG_SET("kvs_open_o_reclaim", KVS_O_SCAN);
KVS_FLAG_SET("kvs_open_o_scan", KVS_O_RECLAIM);
}
return (0);
}
/*
* writelock --
* Acquire a write lock.
*/
static INLINE int
writelock(WT_SESSION *session, pthread_rwlock_t *lockp)
{
int ret;
if ((ret = pthread_rwlock_wrlock(lockp)) != 0)
ERET(session, WT_PANIC, "lock: %s", strerror(ret));
return (ret);
}
/*
* lock_destroy --
* Destroy an object's lock.
*/
static int
lock_destroy(WT_SESSION *session, pthread_rwlock_t *lockp)
{
int ret;
if ((ret = pthread_rwlock_destroy(lockp)) != 0)
ERET(session, WT_PANIC, "lock destroy: %s", strerror(ret));
return (0);
}
/*
* unlock --
* Release an object's lock.
*/
static INLINE int
unlock(WT_EXTENSION_API *wt_api, WT_SESSION *session, pthread_rwlock_t *lockp)
{
int ret = 0;
if ((ret = pthread_rwlock_unlock(lockp)) != 0)
ERET(wt_api, session, WT_PANIC, "unlock: %s", strerror(ret));
return (0);
}
/*
* lock_init --
* Initialize an object's lock.
*/
static int
lock_init(WT_SESSION *session, pthread_rwlock_t *lockp)
{
int ret;
if ((ret = pthread_rwlock_init(lockp, NULL)) != 0)
ERET(session, WT_PANIC, "lock init: %s", strerror(ret));
return (ret);
}
/*
* kvs_session_verify --
* WT_SESSION::verify method.
*/
static int
kvs_session_verify(WT_DATA_SOURCE *dsrc,
WT_SESSION *session, const char *uri, WT_CONFIG_ARG *config)
{
(void)dsrc; /* Unused parameters */
(void)uri;
(void)config;
ERET(session, ENOTSUP, "verify: %s", strerror(ENOTSUP));
}
static int
kvs_cursor_remove(WT_CURSOR *wtcursor)
{
CURSOR_SOURCE *cursor;
DBC *dbc;
DBT *key, *value;
WT_EXTENSION_API *wt_api;
WT_SESSION *session;
int ret = 0;
session = wtcursor->session;
cursor = (CURSOR_SOURCE *)wtcursor;
wt_api = cursor->wt_api;
dbc = cursor->dbc;
key = &cursor->key;
value = &cursor->value;
/*
* WiredTiger's "remove" of a bitfield is really an update with a value
* of a single byte of zero.
*/
if (cursor->config_bitfield) {
wtcursor->value.size = 1;
wtcursor->value.data = "\0";
return (kvs_cursor_update(wtcursor));
}
if ((ret = copyin_key(wtcursor)) != 0)
return (ret);
if ((ret = dbc->get(dbc, key, value, DB_SET)) != 0) {
if (ret == DB_NOTFOUND || ret == DB_KEYEMPTY)
return (WT_NOTFOUND);
ERET(wt_api,
session, WT_ERROR, "DbCursor.get: %s", db_strerror(ret));
}
if ((ret = dbc->del(dbc, 0)) != 0)
ERET(wt_api,
session, WT_ERROR, "DbCursor.del: %s", db_strerror(ret));
return (0);
}
/*
* lock_init --
* Initialize an object's lock.
*/
static int
lock_init(
WT_EXTENSION_API *wt_api, WT_SESSION *session, pthread_rwlock_t *lockp)
{
int ret = 0;
if ((ret = pthread_rwlock_init(lockp, NULL)) != 0)
ERET(wt_api, session, WT_PANIC, "lock init: %s", strerror(ret));
return (0);
}
/*
* wiredtiger_extension_init --
* Initialize the KVS connector code.
*/
int
wiredtiger_extension_init(WT_CONNECTION *connection, WT_CONFIG_ARG *config)
{
static WT_DATA_SOURCE data_source; /* Enclosing data source */
int ret;
(void)config; /* Unused parameters */
ret = 0;
/* Acquire the extension API */
wt_ext = connection->get_extension_api(connection);
/* Check the library version */
#if KVS_VERSION_MAJOR != 2 || KVS_VERSION_MINOR != 8
ERET(NULL, EINVAL,
"unsupported KVS library version %d.%d",
KVS_VERSION_MAJOR, KVS_VERSION_MINOR);
#endif
/* Initialize the WT_DATA_SOURCE structure. */
memset(&data_source, 0, sizeof(data_source));
data_source.create = kvs_session_create;
data_source.compact = NULL; /* No compaction */
data_source.drop = kvs_session_drop;
data_source.open_cursor = kvs_session_open_cursor;
data_source.rename = kvs_session_rename;
data_source.salvage = NULL; /* No salvage */
data_source.truncate = kvs_session_truncate;
data_source.verify = kvs_session_verify;
if ((ret = connection->add_data_source(
connection, "memrata:", &data_source, NULL)) != 0)
ERET(NULL, ret,
"WT_CONNECTION.add_data_source: %s", wt_ext->strerror(ret));
/* Add the KVS-specific configuration options. */
if ((ret = kvs_config_add(connection)) != 0)
return (ret);
if ((ret = lock_init(NULL, &global_lock)) != 0)
return (ret);
return (0);
}
/*
* kvs_cursor_insert --
* WT_CURSOR::insert method.
*/
static int
kvs_cursor_insert(WT_CURSOR *wt_cursor)
{
CURSOR *cursor;
WT_SESSION *session;
int ret;
cursor = (CURSOR *)wt_cursor;
session = cursor->session;
ret = 0;
/* Allocate a new record for append operations. */
if (cursor->config_append && (ret = kvs_recno_alloc(wt_cursor)) != 0)
return (ret);
if ((ret = copyin_key(wt_cursor)) != 0)
return (ret);
if ((ret = copyin_val(wt_cursor)) != 0)
return (ret);
/*
* WT_CURSOR::insert with overwrite set (create the record if it does
* not exist, update the record if it does exist), maps to kvs_set.
*
* WT_CURSOR::insert without overwrite set (create the record if it
* does not exist, fail if it does exist), maps to kvs_add.
*/
if (cursor->config_overwrite) {
if ((ret = kvs_set(
cursor->data_source->kvs, &cursor->record)) != 0)
ERET(session, WT_ERROR,
"kvs_set: %s", kvs_strerror(ret));
} else
if ((ret = kvs_add(
cursor->data_source->kvs, &cursor->record)) != 0) {
if (ret == KVS_E_KEY_EXISTS)
return (WT_DUPLICATE_KEY);
ERET(session, WT_ERROR,
"kvs_add: %s", kvs_strerror(ret));
}
return (0);
}
static int
uri2name(WT_EXTENSION_API *wt_api,
WT_SESSION *session, const char *uri, const char **namep)
{
const char *name;
if ((name = strchr(uri, ':')) == NULL || *++name == '\0')
ERET(wt_api, session, EINVAL, "unsupported object: %s", uri);
*namep = name;
return (0);
}
static int
kvs_cursor_close(WT_CURSOR *wtcursor)
{
CURSOR_SOURCE *cursor;
DATA_SOURCE *ds;
DB *db;
DBC *dbc;
WT_EXTENSION_API *wt_api;
WT_SESSION *session;
int ret = 0;
session = wtcursor->session;
cursor = (CURSOR_SOURCE *)wtcursor;
ds = cursor->ds;
wt_api = cursor->wt_api;
dbc = cursor->dbc;
cursor->dbc = NULL;
if (dbc != NULL && (ret = dbc->close(dbc)) != 0)
ERET(wt_api, session, WT_ERROR,
"DbCursor.close: %s", db_strerror(ret));
db = cursor->db;
cursor->db = NULL;
if (db != NULL && (ret = db->close(db, 0)) != 0)
ERET(wt_api,
session, WT_ERROR, "Db.close: %s", db_strerror(ret));
free(wtcursor);
if ((ret = writelock(wt_api, session, &ds->rwlock)) != 0)
return (ret);
--ds->open_cursors;
if ((ret = unlock(wt_api, session, &ds->rwlock)) != 0)
return (ret);
return (0);
}
static int
kvs_session_create(WT_DATA_SOURCE *wtds,
WT_SESSION *session, const char *uri, WT_CONFIG_ARG *config)
{
DATA_SOURCE *ds;
DB *db;
DBTYPE type;
WT_CONFIG_ITEM v;
WT_EXTENSION_API *wt_api;
int ret = 0;
const char *name;
ds = (DATA_SOURCE *)wtds;
wt_api = ds->wt_api;
/* Get the object name */
if ((ret = uri2name(wt_api, session, uri, &name)) != 0)
return (ret);
/* Check key/value formats */
if ((ret =
wt_api->config_get(wt_api, session, config, "key_format", &v)) != 0)
ERET(wt_api, session, ret,
"key_format configuration: %s",
wt_api->strerror(wt_api, session, ret));
type = v.len == 1 && v.str[0] == 'r' ? DB_RECNO : DB_BTREE;
/* Create the Berkeley DB table */
if ((ret = db_create(&db, ds->dbenv, 0)) != 0)
ERET(wt_api,
session, WT_ERROR, "db_create: %s", db_strerror(ret));
if ((ret = db->open(db, NULL, name, NULL, type, DB_CREATE, 0)) != 0)
ERET(wt_api,
session, WT_ERROR, "Db.open: %s", uri, db_strerror(ret));
if ((ret = db->close(db, 0)) != 0)
ERET(wt_api, session, WT_ERROR, "Db.close", db_strerror(ret));
return (0);
}
static int
bdb_dump(WT_CURSOR *wtcursor, WT_SESSION *session, const char *tag)
{
CURSOR_SOURCE *cursor;
DB *db;
DBC *dbc;
DBT *key, *value;
WT_EXTENSION_API *wt_api;
int ret = 0;
cursor = (CURSOR_SOURCE *)wtcursor;
wt_api = cursor->wt_api;
db = cursor->db;
key = &cursor->key;
value = &cursor->value;
if ((ret = db->cursor(db, NULL, &dbc, 0)) != 0)
ERET(wt_api,
session, WT_ERROR, "Db.cursor: %s", db_strerror(ret));
printf("==> %s\n", tag);
while ((ret = dbc->get(dbc, key, value, DB_NEXT)) == 0)
if (cursor->config_recno)
printf("\t%llu/%.*s\n",
(unsigned long long)*(db_recno_t *)key->data,
(int)value->size, (char *)value->data);
else
printf("\t%.*s/%.*s\n",
(int)key->size, (char *)key->data,
(int)value->size, (char *)value->data);
if (ret != DB_NOTFOUND)
ERET(wt_api,
session, WT_ERROR, "DbCursor.get: %s", db_strerror(ret));
return (0);
}
static INLINE int
recno_convert(WT_CURSOR *wtcursor, db_recno_t *recnop)
{
CURSOR_SOURCE *cursor;
WT_EXTENSION_API *wt_api;
WT_SESSION *session;
session = wtcursor->session;
cursor = (CURSOR_SOURCE *)wtcursor;
wt_api = cursor->wt_api;
if (wtcursor->recno > UINT32_MAX)
ERET(wt_api,
session, ERANGE, "record number %" PRIuMAX ": %s",
(uintmax_t)wtcursor->recno, strerror(ERANGE));
*recnop = (uint32_t)wtcursor->recno;
return (0);
}
/*
* copy_key --
* Copy the key for methods where the underlying KVS call returns a key.
*/
static INLINE int
copy_key(WT_CURSOR *wt_cursor)
{
struct kvs_record *r;
CURSOR *cursor;
WT_SESSION *session;
cursor = (CURSOR *)wt_cursor;
session = cursor->session;
r = &cursor->record;
if (cursor->key == r->key)
return (0);
if (r->key_len > sizeof(cursor->key))
ERET(session, ERANGE,
"key too large, maximum is %" PRIuMAX,
(uintmax_t)sizeof(cursor->key));
memcpy(cursor->key, r->key, r->key_len);
r->key = cursor->key;
return (0);
}
/*
* kvs_config_add --
* Add the KVS configuration options to the WiredTiger configuration
* process.
*/
static int
kvs_config_add(WT_CONNECTION *conn)
{
const KVS_OPTIONS *p;
int ret;
ret = 0;
/*
* KVS options are currently only allowed on session.create, which means
* they cannot be modified for each run, the object create configuration
* is permanent.
*/
for (p = kvs_options; p->name != NULL; ++p)
if ((ret = conn->configure_method(conn,
"session.create", "memrata:",
p->name, p->type, p->checks)) != 0)
ERET(NULL, ret,
"WT_CONNECTION.configure_method: session.create: "
"{%s, %s, %s}",
p->name, p->type, p->checks, wt_ext->strerror(ret));
return (0);
}
/*
* kvs_cursor_update --
* WT_CURSOR::update method.
*/
static int
kvs_cursor_update(WT_CURSOR *wt_cursor)
{
CURSOR *cursor;
WT_SESSION *session;
int ret;
cursor = (CURSOR *)wt_cursor;
session = cursor->session;
if ((ret = copyin_key(wt_cursor)) != 0)
return (ret);
if ((ret = copyin_val(wt_cursor)) != 0)
return (ret);
/*
* WT_CURSOR::update (update the record if it does exist, fail if it
* does not exist), maps to kvs_replace.
*/
if ((ret = kvs_replace(cursor->data_source->kvs, &cursor->record)) != 0)
ERET(session, WT_ERROR, "kvs_replace: %s", kvs_strerror(ret));
return (0);
}
// get_player_information()
int ModApiServer::l_get_player_information(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
const char * name = luaL_checkstring(L, 1);
Player *player = getEnv(L)->getPlayer(name);
if(player == NULL)
{
lua_pushnil(L); // no such player
return 1;
}
Address addr;
try
{
addr = getServer(L)->getPeerAddress(player->peer_id);
}
catch(con::PeerNotFoundException) // unlikely
{
dstream << FUNCTION_NAME << ": peer was not found" << std::endl;
lua_pushnil(L); // error
return 1;
}
float min_rtt,max_rtt,avg_rtt,min_jitter,max_jitter,avg_jitter;
ClientState state;
u32 uptime;
u16 prot_vers;
u8 ser_vers,major,minor,patch;
std::string vers_string;
#define ERET(code) \
if (!(code)) { \
dstream << FUNCTION_NAME << ": peer was not found" << std::endl; \
lua_pushnil(L); /* error */ \
return 1; \
}
ERET(getServer(L)->getClientConInfo(player->peer_id,con::MIN_RTT,&min_rtt))
ERET(getServer(L)->getClientConInfo(player->peer_id,con::MAX_RTT,&max_rtt))
ERET(getServer(L)->getClientConInfo(player->peer_id,con::AVG_RTT,&avg_rtt))
ERET(getServer(L)->getClientConInfo(player->peer_id,con::MIN_JITTER,&min_jitter))
ERET(getServer(L)->getClientConInfo(player->peer_id,con::MAX_JITTER,&max_jitter))
ERET(getServer(L)->getClientConInfo(player->peer_id,con::AVG_JITTER,&avg_jitter))
ERET(getServer(L)->getClientInfo(player->peer_id,
&state, &uptime, &ser_vers, &prot_vers,
&major, &minor, &patch, &vers_string))
lua_newtable(L);
int table = lua_gettop(L);
lua_pushstring(L,"address");
lua_pushstring(L, addr.serializeString().c_str());
lua_settable(L, table);
lua_pushstring(L,"ip_version");
if (addr.getFamily() == AF_INET) {
lua_pushnumber(L, 4);
} else if (addr.getFamily() == AF_INET6) {
lua_pushnumber(L, 6);
} else {
lua_pushnumber(L, 0);
}
lua_settable(L, table);
lua_pushstring(L,"min_rtt");
lua_pushnumber(L, min_rtt);
lua_settable(L, table);
lua_pushstring(L,"max_rtt");
lua_pushnumber(L, max_rtt);
lua_settable(L, table);
lua_pushstring(L,"avg_rtt");
lua_pushnumber(L, avg_rtt);
lua_settable(L, table);
lua_pushstring(L,"min_jitter");
lua_pushnumber(L, min_jitter);
lua_settable(L, table);
lua_pushstring(L,"max_jitter");
lua_pushnumber(L, max_jitter);
lua_settable(L, table);
lua_pushstring(L,"avg_jitter");
lua_pushnumber(L, avg_jitter);
lua_settable(L, table);
lua_pushstring(L,"connection_uptime");
lua_pushnumber(L, uptime);
lua_settable(L, table);
#ifndef NDEBUG
lua_pushstring(L,"serialization_version");
lua_pushnumber(L, ser_vers);
lua_settable(L, table);
lua_pushstring(L,"protocol_version");
lua_pushnumber(L, prot_vers);
lua_settable(L, table);
lua_pushstring(L,"major");
lua_pushnumber(L, major);
lua_settable(L, table);
lua_pushstring(L,"minor");
lua_pushnumber(L, minor);
lua_settable(L, table);
lua_pushstring(L,"patch");
lua_pushnumber(L, patch);
lua_settable(L, table);
lua_pushstring(L,"version_string");
lua_pushstring(L, vers_string.c_str());
lua_settable(L, table);
lua_pushstring(L,"state");
lua_pushstring(L,ClientInterface::state2Name(state).c_str());
lua_settable(L, table);
#endif
#undef ERET
return 1;
}
_er90b_open(char *fname, int oflag, int mode, struct fdinfo *fio,
union spec_u *spec, struct ffsw *retstat, int cbits, int cblks,
struct gl_o_inf *oinf)
{
int fd; /* file descriptor */
ER90BYT *er90b_info;
struct tpdctl ctl;
struct stat x;
int save_err;
/*
* allocate *ER90BYT
*/
if((er90b_info = (ER90BYT *)calloc(sizeof(*er90b_info),1))==NULL){
ERETURN(retstat, FENOMEMY, 0);
}
if ((_numargs() > 8 ) && oinf->alreadyopen) {
fd = oinf->fd;
}
else {
/*
* Open the file.
*/
oflag = (oflag | O_RAW) & (~O_CREAT);
fd = open(fname, oflag, 0666);
if (fd < 0){
free(er90b_info);
ERETURN(retstat, errno, 0);
}
}
#ifndef _CRAYMPP
/* This ioctl does not work on the MPP */
if ( ioctl( fd, TPC_GETFL, &ctl) < 0 ){
/* If ioctl fails with ENOTTY, then this */
/* isn't a tape file. Make the errno more meaningful */
if (errno == ENOTTY)
errno = FECONNTP;
ERET();
}
/*
* If this is not a byte-stream ER90, error
*/
if ((ctl.tpc_type != DT_ER90) || (ctl.tpc_dbsize != 1)) {
errno = FDC_ERR_NOER90;
ERET();
}
#endif
er90b_info->tpos = TPOS_DONE;
er90b_info->fd = fd;
/*
* Save device number and inode for tapeinfo requests
*/
if (fstat(fd, &x) < 0){
ERET();
}
#ifdef _CRAYMPP
if (_gsys_qtape(&x) == 0) {
errno = FECONNTP;
ERET();
}
if (getenv("NOER90WARN")== NULL) {
write(2,"Reads and writes to tape devices using the er90 layer\n",54);
write(2,"may function differently than reads and writes using\n",53);
write(2,"the tape layer.\n",16);
write(2,"The use of the er90 layer with tape devices may not be\n",55);
write(2,"supported in future releases.\n",30);
write(2,"To disable this message, set the environment variable\n",54);
write(2,"NOER90WARN to a non-zero value\n",31);
}
#endif
er90b_info->tsireq.st_dev = x.st_dev;
er90b_info->tsireq.st_ino = x.st_ino;
er90b_info->tsireq.fd = fd;
#ifndef _CRAYMPP
/* Can't use an ioctl on MPP yet. */
if (sysconf(_SC_CRAY_RELEASE) >= 8300) {
/* With operating system versions >= 8300, we can */
/* use an ioctl to get tape info. Er90s only run on Model E IOS, */
/* so this is safe. */
er90b_info->tsireq.ioctlreq = 1;
}
#endif
fio->lyr_info = (char *)er90b_info;
fio->realfd = fd;
fio->rwflag = POSITIN;
SETSTAT(retstat, 0, 0);
return(0);
badret:
save_err = errno;
free(er90b_info);
(void) close(fd);
errno = save_err;
ERETURN(retstat, errno, 0);
}
static int
kvs_cursor_search_near(WT_CURSOR *wtcursor, int *exact)
{
CURSOR_SOURCE *cursor;
DBC *dbc;
DBT *key, *value;
WT_EXTENSION_API *wt_api;
WT_SESSION *session;
size_t len;
int ret = 0;
session = wtcursor->session;
cursor = (CURSOR_SOURCE *)wtcursor;
wt_api = cursor->wt_api;
dbc = cursor->dbc;
key = &cursor->key;
value = &cursor->value;
if ((ret = copyin_key(wtcursor)) != 0)
return (ret);
retry: if ((ret = dbc->get(dbc, key, value, DB_SET_RANGE)) == 0) {
/*
* WiredTiger returns the logically adjacent key (which might
* be less than, equal to, or greater than the specified key),
* Berkeley DB returns a key equal to or greater than the
* specified key. Check for an exact match, otherwise Berkeley
* DB must have returned a larger key than the one specified.
*/
if (key->size == wtcursor->key.size &&
memcmp(key->data, wtcursor->key.data, key->size) == 0)
*exact = 0;
else
*exact = 1;
copyout_key(wtcursor);
copyout_value(wtcursor);
return (0);
}
/*
* Berkeley DB only returns keys equal to or greater than the specified
* key, while WiredTiger returns adjacent keys, that is, if there's a
* key smaller than the specified key, it's supposed to be returned. In
* other words, WiredTiger only fails if the store is empty. Read the
* last key in the store, and see if it's less than the specified key,
* in which case we have the right key to return. If it's not less than
* the specified key, we're racing with some other thread, throw up our
* hands and try again.
*/
if ((ret = dbc->get(dbc, key, value, DB_LAST)) == 0) {
len = key->size < wtcursor->key.size ?
key->size : wtcursor->key.size;
if (memcmp(key->data, wtcursor->key.data, len) < 0) {
*exact = -1;
copyout_key(wtcursor);
copyout_value(wtcursor);
return (0);
}
goto retry;
}
if (ret == DB_NOTFOUND || ret == DB_KEYEMPTY)
return (WT_NOTFOUND);
ERET(wt_api, session, WT_ERROR, "DbCursor.get: %s", db_strerror(ret));
}
static int
kvs_cursor_insert(WT_CURSOR *wtcursor)
{
CURSOR_SOURCE *cursor;
DB *db;
DBC *dbc;
DBT *key, *value;
WT_EXTENSION_API *wt_api;
WT_SESSION *session;
int ret = 0;
session = wtcursor->session;
cursor = (CURSOR_SOURCE *)wtcursor;
wt_api = cursor->wt_api;
dbc = cursor->dbc;
db = cursor->db;
key = &cursor->key;
value = &cursor->value;
if ((ret = copyin_key(wtcursor)) != 0)
return (ret);
copyin_value(wtcursor);
if (cursor->config_append) {
/*
* Berkeley DB cursors have no operation to append/create a
* new record and set the cursor; use the DB handle instead
* then set the cursor explicitly.
*
* When appending, we're allocating and returning a new record
* number.
*/
if ((ret = db->put(db, NULL, key, value, DB_APPEND)) != 0)
ERET(wt_api,
session, WT_ERROR, "Db.put: %s", db_strerror(ret));
wtcursor->recno = *(db_recno_t *)key->data;
if ((ret = dbc->get(dbc, key, value, DB_SET)) != 0)
ERET(wt_api, session, WT_ERROR,
"DbCursor.get: %s", db_strerror(ret));
} else if (cursor->config_overwrite) {
if ((ret = dbc->put(dbc, key, value, DB_KEYFIRST)) != 0)
ERET(wt_api, session, WT_ERROR,
"DbCursor.put: %s", db_strerror(ret));
} else {
/*
* Berkeley DB cursors don't have a no-overwrite flag; use
* the DB handle instead then set the cursor explicitly.
*/
if ((ret =
db->put(db, NULL, key, value, DB_NOOVERWRITE)) != 0) {
if (ret == DB_KEYEXIST)
return (WT_DUPLICATE_KEY);
ERET(wt_api,
session, WT_ERROR, "Db.put: %s", db_strerror(ret));
}
if ((ret = dbc->get(dbc, key, value, DB_SET)) != 0)
ERET(wt_api, session, WT_ERROR,
"DbCursor.get: %s", db_strerror(ret));
}
return (0);
}
