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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/resolve-host
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/resolve-host')
-rw-r--r--src/resolve-host/resolve-host.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/src/resolve-host/resolve-host.c b/src/resolve-host/resolve-host.c
index f68751a2e5..36dfc70e00 100644
--- a/src/resolve-host/resolve-host.c
+++ b/src/resolve-host/resolve-host.c
@@ -71,8 +71,8 @@ static void print_source(uint64_t flags, usec_t rtt) {
static int resolve_host(sd_bus *bus, const char *name) {
- _cleanup_bus_message_unref_ sd_bus_message *req = NULL, *reply = NULL;
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
const char *canonical = NULL;
char ifname[IF_NAMESIZE] = "";
unsigned c = 0;
@@ -185,8 +185,8 @@ static int resolve_host(sd_bus *bus, const char *name) {
}
static int resolve_address(sd_bus *bus, int family, const union in_addr_union *address, int ifindex) {
- _cleanup_bus_message_unref_ sd_bus_message *req = NULL, *reply = NULL;
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *pretty = NULL;
char ifname[IF_NAMESIZE] = "";
uint64_t flags;
@@ -320,8 +320,8 @@ static int parse_address(const char *s, int *family, union in_addr_union *addres
static int resolve_record(sd_bus *bus, const char *name) {
- _cleanup_bus_message_unref_ sd_bus_message *req = NULL, *reply = NULL;
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
char ifname[IF_NAMESIZE] = "";
unsigned n = 0;
uint64_t flags;
@@ -439,8 +439,8 @@ static int resolve_record(sd_bus *bus, const char *name) {
static int resolve_service(sd_bus *bus, const char *name, const char *type, const char *domain) {
const char *canonical_name, *canonical_type, *canonical_domain;
- _cleanup_bus_message_unref_ sd_bus_message *req = NULL, *reply = NULL;
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
char ifname[IF_NAMESIZE] = "";
size_t indent, sz;
uint64_t flags;
@@ -871,7 +871,7 @@ static int parse_argv(int argc, char *argv[]) {
}
int main(int argc, char **argv) {
- _cleanup_bus_flush_close_unref_ sd_bus *bus = NULL;
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
int r;
log_parse_environment();