Introduce a new registration mechanism to sweetcomb.

Sweetcomb plugins register for various [initialization] events
by placing structures and __attribute__((constructor)) functions
into the library. When sysrepo plugin is initializing, the framework
walks constructor-generated singly-linked structure lists, calls the
indicated functions.

Change-Id: I0cb078391f2662e4f6dd08c1a383173f203adf2a
Signed-off-by: jackiechen1985 <xiaobo.chen@tieto.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/src/plugins/sc_plugins.h b/src/plugins/sc_plugins.h
index 4a784fb..681be6b 100644
--- a/src/plugins/sc_plugins.h
+++ b/src/plugins/sc_plugins.h
@@ -20,6 +20,23 @@
 #include <sysrepo/values.h>
 #include <sysrepo/plugins.h>
 
+#include "sc_init.h"
+#include "sys_util.h"
+
+typedef struct sc_plugin_main_t {
+    /* Session context acquired with ::sr_session_start call. */
+    sr_session_ctx_t *session;
+
+    /* Subscription context that is supposed to be released by ::sr_unsubscribe */
+    sr_subscription_ctx_t *subscription;
+
+    /* List of init/exit functions to call, setup by constructors */
+    _sc_init_function_list_elt_t *init_function_registrations;
+    _sc_exit_function_list_elt_t *exit_function_registrations;
+} sc_plugin_main_t;
+
+sc_plugin_main_t *sc_get_plugin_main();
+
 //functions that sysrepo-plugin need
 int sr_plugin_init_cb(sr_session_ctx_t *session, void **private_ctx);
 void sr_plugin_cleanup_cb(sr_session_ctx_t *session, void *private_ctx);