sin/samba-mirror
1
0
Fork 0
mirror of https://github.com/samba-team/samba.git synced 2025-01-11 05:18:09 +03:00
Code

Added int32 version of "atomic" update.

Browse Source 
Jeremy.
(This used to be commit 1233b553e7)
This commit is contained in:
Jeremy Allison 2002-01-09 01:53:19 +00:00
parent b6f4f3465f
commit af85c2f062
1 changed files with 35 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
source3/tdb/tdbutil.c
View File

@ -205,6 +205,7 @@ TDB_DATA tdb_fetch_by_string(TDB_CONTEXT *tdb, char *keystr)
/****************************************************************************
Atomic integer change. Returns old value. To create, set initial value in *oldval.
Deprecated. Use int32 version. JRA.
****************************************************************************/
int tdb_change_int_atomic(TDB_CONTEXT *tdb, char *keystr, int *oldval, int change_val)
@ -237,6 +238,40 @@ int tdb_change_int_atomic(TDB_CONTEXT *tdb, char *keystr, int *oldval, int chang
return ret;
}
/****************************************************************************
Atomic integer change. Returns old value. To create, set initial value in *oldval.
****************************************************************************/
int32 tdb_change_int32_atomic(TDB_CONTEXT *tdb, char *keystr, int32 *oldval, int32 change_val)
{
int32 val;
int32 ret = -1;
if (tdb_lock_bystring(tdb, keystr) == -1)
return -1;
if ((val = tdb_fetch_int32(tdb, keystr)) == -1) {
if (tdb_error(tdb) != TDB_ERR_NOEXIST)
goto err_out;
val = *oldval;
} else {
*oldval = val;
val += change_val;
}
if (tdb_store_int32(tdb, keystr, val) == -1)
goto err_out;
ret = 0;
err_out:
tdb_unlock_bystring(tdb, keystr);
return ret;
}
/****************************************************************************
Useful pair of routines for packing/unpacking data consisting of
integers and strings.