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authorJeremy Allison <jra@samba.org>2002-01-09 01:53:19 +0000
committerJeremy Allison <jra@samba.org>2002-01-09 01:53:19 +0000
commitaf85c2f06242928eacacfe301493686452807cb8 (patch)
tree300a025f6ae44ce2cb7428f58fb302f9184ba66f /source3
parentb6f4f3465f977cf9f8d2700a37abd76fab659260 (diff)
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Added int32 version of "atomic" update.
Jeremy. (This used to be commit 1233b553e78b8d7580b9ea4f1bba62c78b4cd186)
Diffstat (limited to 'source3')
-rw-r--r--source3/tdb/tdbutil.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/source3/tdb/tdbutil.c b/source3/tdb/tdbutil.c
index 34c0967b72..ac3c5336f1 100644
--- a/source3/tdb/tdbutil.c
+++ b/source3/tdb/tdbutil.c
@@ -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)
@@ -238,6 +239,40 @@ int tdb_change_int_atomic(TDB_CONTEXT *tdb, char *keystr, int *oldval, int chang
}
/****************************************************************************
+ 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.
****************************************************************************/