return;
}
+ tdb_trace(tdb, "tdb_increment_seqnum_nonblock");
+
/* we ignore errors from this, as we have no sane way of
dealing with them.
*/
/* find which hash bucket it is in */
hash = tdb->hash_fn(&key);
- if (!(rec_ptr = tdb_find_lock_hash(tdb,key,hash,F_RDLCK,&rec)))
+ if (!(rec_ptr = tdb_find_lock_hash(tdb,key,hash,F_RDLCK,&rec))) {
+ tdb_trace(tdb, "tdb_fetch ");
+ tdb_trace_record(tdb, key);
+ tdb_trace(tdb, "= ENOENT\n");
return tdb_null;
-
+ }
ret.dptr = tdb_alloc_read(tdb, rec_ptr + sizeof(rec) + rec.key_len,
rec.data_len);
ret.dsize = rec.data_len;
tdb_unlock(tdb, BUCKET(rec.full_hash), F_RDLCK);
+ tdb_trace(tdb, "tdb_fetch ");
+ tdb_trace_record(tdb, key);
+ tdb_trace(tdb, "= ");
+ tdb_trace_record(tdb, ret);
+ tdb_trace(tdb, "\n");
return ret;
}
hash = tdb->hash_fn(&key);
if (!(rec_ptr = tdb_find_lock_hash(tdb,key,hash,F_RDLCK,&rec))) {
+ tdb_trace(tdb, "tdb_parse_record ");
+ tdb_trace_record(tdb, key);
+ tdb_trace(tdb, "= ENOENT\n");
return TDB_ERRCODE(TDB_ERR_NOEXIST, 0);
}
+ tdb_trace(tdb, "tdb_parse_record ");
+ tdb_trace_record(tdb, key);
+ tdb_trace(tdb, "= %u\n", rec.data_len);
+
ret = tdb_parse_data(tdb, key, rec_ptr + sizeof(rec) + rec.key_len,
rec.data_len, parser, private_data);
int tdb_exists(struct tdb_context *tdb, TDB_DATA key)
{
uint32_t hash = tdb->hash_fn(&key);
- return tdb_exists_hash(tdb, key, hash);
+ int ret;
+
+ ret = tdb_exists_hash(tdb, key, hash);
+ tdb_trace(tdb, "tdb_exists ");
+ tdb_trace_record(tdb, key);
+ tdb_trace(tdb, "= %i\n", ret);
+ return ret;
}
/* actually delete an entry in the database given the offset */
int tdb_delete(struct tdb_context *tdb, TDB_DATA key)
{
uint32_t hash = tdb->hash_fn(&key);
- return tdb_delete_hash(tdb, key, hash);
+ int ret;
+
+ ret = tdb_delete_hash(tdb, key, hash);
+ tdb_trace(tdb, "tdb_delete ");
+ tdb_trace_record(tdb, key);
+ tdb_trace(tdb, "= %s\n", ret ? "ENOENT" : "0");
+ return ret;
}
/*
if (tdb_lock(tdb, BUCKET(hash), F_WRLCK) == -1)
return -1;
+ tdb_trace(tdb, "tdb_store %s ", flag == TDB_INSERT ? "insert" :
+ flag == TDB_MODIFY ? "modify" : "normal");
+ tdb_trace_record(tdb, key);
+ tdb_trace_record(tdb, dbuf);
+
/* check for it existing, on insert. */
if (flag == TDB_INSERT) {
if (tdb_exists_hash(tdb, key, hash)) {
tdb->ecode = TDB_ERR_EXISTS;
+ tdb_trace(tdb, "= EEXIST\n");
goto fail;
}
} else {
/* first try in-place update, on modify or replace. */
if (tdb_update_hash(tdb, key, hash, dbuf) == 0) {
+ tdb_trace(tdb, "= inplace\n");
goto done;
}
if (tdb->ecode == TDB_ERR_NOEXIST &&
flag == TDB_MODIFY) {
/* if the record doesn't exist and we are in TDB_MODIFY mode then
we should fail the store */
+ tdb_trace(tdb, "= ENOENT\n");
goto fail;
}
}
goto fail;
}
goto done;
+ tdb_trace(tdb, "= fromdead\n");
}
}
rec.full_hash = hash;
rec.magic = TDB_MAGIC;
+ tdb_trace(tdb, "= allocate\n");
+
/* write out and point the top of the hash chain at it */
if (tdb_rec_write(tdb, rec_ptr, &rec) == -1
|| tdb->methods->tdb_write(tdb, rec_ptr+sizeof(rec), p, key.dsize+dbuf.dsize)==-1
return -1;
dbuf = tdb_fetch(tdb, key);
+ tdb_trace(tdb, "tdb_append ");
+ tdb_trace_record(tdb, key);
+ tdb_trace_record(tdb, dbuf);
+ tdb_trace(tdb, "= %s\n", dbuf.dptr ? "insert" : "append");
if (dbuf.dptr == NULL) {
dbuf.dptr = (unsigned char *)malloc(new_dbuf.dsize);
} else {
- unsigned char *new_dptr = (unsigned char *)realloc(dbuf.dptr,
- dbuf.dsize + new_dbuf.dsize);
+ unsigned int new_len = dbuf.dsize + new_dbuf.dsize;
+ unsigned char *new_dptr;
+
+ /* realloc '0' is special: don't do that. */
+ if (new_len == 0)
+ new_len = 1;
+ new_dptr = (unsigned char *)realloc(dbuf.dptr, new_len);
if (new_dptr == NULL) {
free(dbuf.dptr);
}
tdb_off_t seqnum=0;
tdb_ofs_read(tdb, TDB_SEQNUM_OFS, &seqnum);
+ tdb_trace(tdb, "tdb_get_seqnum = %u\n", seqnum);
return seqnum;
}
return -1;
}
+ tdb_trace(tdb, "tdb_wipe_all\n");
+
/* see if the tdb has a recovery area, and remember its size
if so. We don't want to lose this as otherwise each
tdb_wipe_all() in a transaction will increase the size of
tdb_unlockall(tdb);
return -1;
}
+
+#ifdef TDB_TRACE
+#include <stdarg.h>
+
+void tdb_trace(const struct tdb_context *tdb, const char *fmt, ...)
+{
+ char msg[256];
+ va_list args;
+ int len, err;
+
+ va_start(args, fmt);
+ len = vsprintf(msg, fmt, args);
+ va_end(args);
+
+ err = write(tdb->tracefd, msg, len);
+}
+
+void tdb_trace_record(const struct tdb_context *tdb, TDB_DATA rec)
+{
+ char msg[20];
+ unsigned int i;
+ int err;
+
+ err = write(tdb->tracefd, msg, sprintf(msg, "%zu:", rec.dsize));
+ for (i = 0; i < rec.dsize; i++)
+ err += write(tdb->tracefd, msg, sprintf(msg, "%02x",
+ rec.dptr[i]));
+ err += write(tdb->tracefd, " ", 1);
+}
+#endif
projects / ccan / blobdiff