Initial import of kconsumerd and libkernelctl

[lttng-tools.git] / kconsumerd / kconsumerd.h

diff --git a/kconsumerd/kconsumerd.h b/kconsumerd/kconsumerd.h
new file mode 100644 (file)
index 0000000..f5ec288
--- /dev/null
+++ b/kconsumerd/kconsumerd.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifndef _LTT_KCONSUMERD_H
+#define _LTT_KCONSUMERD_H
+
+/* timeout of 1s on poll to ensure the fd list is updated when needed */
+#define POLL_TIMEOUT 1000
+
+struct ltt_kconsumerd_fd_list {
+       struct cds_list_head head;
+};
+
+/*
+ * Internal representation of the FDs,
+ * sessiond_fd is used to identify uniquely a fd
+ */
+struct ltt_kconsumerd_fd {
+       struct cds_list_head list;
+       int sessiond_fd; /* used to identify uniquely a fd with sessiond */
+       int consumerd_fd; /* fd to consume */
+       int out_fd; /* output file to write the data */
+       off_t out_fd_offset; /* write position in the output file descriptor */
+       char path_name[PATH_MAX]; /* tracefile name */
+       enum lttcomm_kconsumerd_fd_state state;
+       unsigned long max_sb_size; /* the subbuffer size for this channel */
+};
+
+#endif /* _LTT_KCONSUMERD_H */