Changes in uspace/lib/c/generic/loc.c [45058baa:763e0cd] in mainline

File:

• uspace/lib/c/generic/loc.c (modified) (7 diffs)

uspace/lib/c/generic/loc.c

@@ -45 +45 @@
 static FIBRIL_MUTEX_INITIALIZE(loc_consumer_mutex);
 
+static FIBRIL_MUTEX_INITIALIZE(loc_callback_mutex);
+static bool loc_callback_created = false;
+
 static async_sess_t *loc_supp_block_sess = NULL;
 static async_sess_t *loc_cons_block_sess = NULL;
@@ -51 +54 @@
 static async_sess_t *loc_consumer_sess = NULL;
 
+static loc_cat_change_cb_t cat_change_cb = NULL;
+
+static void loc_cb_conn(ipc_callid_t iid, ipc_call_t *icall, void *arg)
+{
+        loc_cat_change_cb_t cb_fun;
+        
+        while (true) {
+                ipc_call_t call;
+                ipc_callid_t callid = async_get_call(&call);
+                
+                if (!IPC_GET_IMETHOD(call)) {
+                        /* TODO: Handle hangup */
+                        return;
+                }
+                
+                int retval;
+                
+                switch (IPC_GET_IMETHOD(call)) {
+                case LOC_EVENT_CAT_CHANGE:
+                        fibril_mutex_lock(&loc_callback_mutex);
+                        cb_fun = cat_change_cb;
+                        if (cb_fun != NULL) {
+                                (*cb_fun)();
+                        }
+                        fibril_mutex_unlock(&loc_callback_mutex);
+                        retval = 0;
+                        break;
+                default:
+                        retval = ENOTSUP;
+                }
+                
+                async_answer_0(callid, retval);
+        }
+}
+
+
 static void clone_session(fibril_mutex_t *mtx, async_sess_t *src,
     async_sess_t **dst)
@@ -60 +99 @@
         
         fibril_mutex_unlock(mtx);
+}
+
+static int loc_callback_create(void)
+{
+        async_exch_t *exch;
+        sysarg_t retval;
+        int rc = EOK;
+
+        fibril_mutex_lock(&loc_callback_mutex);
+        
+        if (!loc_callback_created) {
+                exch = loc_exchange_begin_blocking(LOC_PORT_CONSUMER);
+                
+                ipc_call_t answer;
+                aid_t req = async_send_0(exch, LOC_CALLBACK_CREATE, &answer);
+                async_connect_to_me(exch, 0, 0, 0, loc_cb_conn, NULL);
+                loc_exchange_end(exch);
+                
+                async_wait_for(req, &retval);
+                if (rc != EOK)
+                        goto done;
+                
+                if (retval != EOK) {
+                        rc = retval;
+                        goto done;
+                }
+                
+                loc_callback_created = true;
+        }
+        
+        rc = EOK;
+done:
+        fibril_mutex_unlock(&loc_callback_mutex);
+        return rc;
 }
 
@@ -291 +364 @@
 }
 
-/** Get service name.
- *
- * Provided ID of a service, return its name.
- *
- * @param svc_id        Service ID
+/** Get object name.
+ *
+ * Provided ID of an object, return its name.
+ *
+ * @param method        IPC method
+ * @param id            Object ID
  * @param name          Place to store pointer to new string. Caller should
  *                      free it using free().
  * @return              EOK on success or negative error code
  */
-int loc_service_get_name(service_id_t svc_id, char **name)
+static int loc_get_name_internal(sysarg_t method, sysarg_t id, char **name)
 {
         async_exch_t *exch;
@@ -312 +386 @@
         
         ipc_call_t answer;
-        aid_t req = async_send_1(exch, LOC_SERVICE_GET_NAME, svc_id, &answer);
+        aid_t req = async_send_1(exch, method, id, &answer);
         aid_t dreq = async_data_read(exch, name_buf, LOC_NAME_MAXLEN,
             &dreply);
@@ -341 +415 @@
 }
 
+/** Get category name.
+ *
+ * Provided ID of a service, return its name.
+ *
+ * @param cat_id        Category ID
+ * @param name          Place to store pointer to new string. Caller should
+ *                      free it using free().
+ * @return              EOK on success or negative error code
+ */
+int loc_category_get_name(category_id_t cat_id, char **name)
+{
+        return loc_get_name_internal(LOC_CATEGORY_GET_NAME, cat_id, name);
+}
+
+/** Get service name.
+ *
+ * Provided ID of a service, return its name.
+ *
+ * @param svc_id        Service ID
+ * @param name          Place to store pointer to new string. Caller should
+ *                      free it using free().
+ * @return              EOK on success or negative error code
+ */
+int loc_service_get_name(service_id_t svc_id, char **name)
+{
+        return loc_get_name_internal(LOC_SERVICE_GET_NAME, svc_id, name);
+}
 
 int loc_namespace_get_id(const char *name, service_id_t *handle,
@@ -749 +850 @@
             data, count);
 }
+
+int loc_register_cat_change_cb(loc_cat_change_cb_t cb_fun)
+{
+        if (loc_callback_create() != EOK)
+                return EIO;
+
+        cat_change_cb = cb_fun;
+        return EOK;
+}