option to see subbuffer size and count

[ust.git] / libustcmd / ustcmd.c

diff --git a/libustcmd/ustcmd.c b/libustcmd/ustcmd.c
index 7a05afa20079944b0ce3e79e60efcf06cc17f233..c2a98459ce6fb069730966a441da0cafee6d87f7 100644 (file)
--- a/libustcmd/ustcmd.c
+++ b/libustcmd/ustcmd.c
@@ -150,6 +150,61 @@ int ustcmd_set_subbuf_num(const char *channel_size, pid_t pid)
        return 0;
 }
 
+/**
+ * Get subbuffer size.
+ *
+ * @param channel      Channel name
+ * @param pid          Traced process ID
+ * @return             subbuf size if successful, or error
+ */
+int ustcmd_get_subbuf_size(const char *channel, pid_t pid)
+{
+       char *cmd, *reply;
+       int result;
+
+       /* format: channel_cpu */
+       asprintf(&cmd, "%s %s_0", "get_subbuf_size", channel);
+
+       result = ustcmd_send_cmd(cmd, pid, &reply);
+       if (result) {
+               free(cmd);
+               free(reply);
+               return -1;
+       }
+
+       result = atoi(reply);
+       free(cmd);
+       free(reply);
+       return result;
+}
+
+/**
+ * Get subbuffer num.
+ *
+ * @param channel      Channel name
+ * @param pid          Traced process ID
+ * @return             subbuf cnf if successful, or error
+ */
+int ustcmd_get_subbuf_num(const char *channel, pid_t pid)
+{
+       char *cmd, *reply;
+       int result;
+
+       /* format: channel_cpu */
+       asprintf(&cmd, "%s %s_0", "get_n_subbufs", channel);
+
+       result = ustcmd_send_cmd(cmd, pid, &reply);
+       if (result) {
+               free(cmd);
+               free(reply);
+               return -1;
+       }
+
+       result = atoi(reply);
+       free(cmd);
+       free(reply);
+       return result;
+}
 
 /**
  * Destroys an UST trace according to a PID.