statedump_process_state & problems patches
[lttngtop.git] / src / common.c
index b18eafd554569fa14f26dfa9135246406884def4..3051f7e3b62b0ab7ac0d5c8cf6d74d291bfc48fa 100644 (file)
@@ -462,3 +462,72 @@ struct lttngtop* get_copy_lttngtop(unsigned long start, unsigned long end)
        return dst;
 }
 
+
+enum bt_cb_ret handle_statedump_process_state(struct bt_ctf_event *call_data,
+               void *private_data)
+{
+       const struct definition *scope;
+       struct processtop *proc;
+       unsigned long timestamp;
+       int64_t pid, tid;
+       char *procname;
+
+       timestamp = bt_ctf_get_timestamp(call_data);
+       if (timestamp == -1ULL)
+               goto error;
+
+       scope = bt_ctf_get_top_level_scope(call_data,
+                        BT_EVENT_FIELDS);
+       pid = bt_ctf_get_int64(bt_ctf_get_field(call_data,
+                            scope, "_pid"));
+       if (bt_ctf_field_get_error()) {
+               fprintf(stderr, "Missing pid context info\n");
+               goto error;
+       }
+
+       scope = bt_ctf_get_top_level_scope(call_data,
+                       BT_EVENT_FIELDS);
+       tid = bt_ctf_get_int64(bt_ctf_get_field(call_data,
+                               scope, "_tid"));
+       if (bt_ctf_field_get_error()) {
+               fprintf(stderr, "Missing tid context info\n");
+               goto error;
+       }
+
+       /*
+        * FIXME
+        * I first tried with bt_ctf_get_string but doesn`t work at all
+        * It couldn`t find the field _name because it is an integer in
+        * the metadata and not a string like _filename for the
+        * statedump_file_descriptor
+        */
+       scope = bt_ctf_get_top_level_scope(call_data,
+                       BT_EVENT_FIELDS);
+       procname = bt_ctf_get_char_array(bt_ctf_get_field(call_data,
+                               scope, "_name"));
+       if (bt_ctf_field_get_error()) {
+               fprintf(stderr, "Missing process name context info\n");
+               goto error;
+       }
+
+       proc = find_process_tid(&lttngtop, tid, procname);
+       if (proc == NULL)
+               proc = add_proc(&lttngtop, tid, procname, timestamp);
+
+       free(proc->comm);
+       proc->comm = strdup(procname);
+       proc->pid = pid;
+
+       /*
+        * FIXME
+        * I would like to free procname because it is duplicated
+        * when the process is created but it segfaults...
+        *
+        * free(procname);
+        */
+
+       return BT_CB_OK;
+
+error:
+       return BT_CB_ERROR_STOP;
+}
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