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authorLennart Poettering <lennart@poettering.net>2015-11-27 19:13:45 +0100
committerLennart Poettering <lennart@poettering.net>2015-11-27 19:19:36 +0100
commit4afd3348c7506dd1d36305b7bcb9feb8952b9d6b (patch)
tree778068851852e18794eb3351d0cb250cd3911f10 /src/hwdb
parentf5edf80e297e4ba499db57779af2f121922f372a (diff)
tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easy
GLIB has recently started to officially support the gcc cleanup attribute in its public API, hence let's do the same for our APIs. With this patch we'll define an xyz_unrefp() call for each public xyz_unref() call, to make it easy to use inside a __attribute__((cleanup())) expression. Then, all code is ported over to make use of this. The new calls are also documented in the man pages, with examples how to use them (well, I only added docs where the _unref() call itself already had docs, and the examples, only cover sd_bus_unrefp() and sd_event_unrefp()). This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we tend to call our destructors these days. Note that this defines no public macro that wraps gcc's attribute and makes it easier to use. While I think it's our duty in the library to make our stuff easy to use, I figure it's not our duty to make gcc's own features easy to use on its own. Most likely, client code which wants to make use of this should define its own: #define _cleanup_(function) __attribute__((cleanup(function))) Or similar, to make the gcc feature easier to use. Making this logic public has the benefit that we can remove three header files whose only purpose was to define these functions internally. See #2008.
Diffstat (limited to 'src/hwdb')
-rw-r--r--src/hwdb/hwdb.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/hwdb/hwdb.c b/src/hwdb/hwdb.c
index de59b797a6..1160dacdf1 100644
--- a/src/hwdb/hwdb.c
+++ b/src/hwdb/hwdb.c
@@ -571,7 +571,7 @@ static int import_file(struct trie *trie, const char *filename) {
}
static int hwdb_query(int argc, char *argv[], void *userdata) {
- _cleanup_hwdb_unref_ sd_hwdb *hwdb = NULL;
+ _cleanup_(sd_hwdb_unrefp) sd_hwdb *hwdb = NULL;
const char *key, *value;
const char *modalias;
int r;