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-rw-r--r--libglusterfs/src/event-history.c90
1 files changed, 90 insertions, 0 deletions
diff --git a/libglusterfs/src/event-history.c b/libglusterfs/src/event-history.c
new file mode 100644
index 00000000000..812267b7c0b
--- /dev/null
+++ b/libglusterfs/src/event-history.c
@@ -0,0 +1,90 @@
+/*
+ Copyright (c) 2012 Gluster, Inc. <http://www.gluster.com>
+ This file is part of GlusterFS.
+
+ GlusterFS 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 3 of the License,
+ or (at your option) any later version.
+
+ GlusterFS 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, see
+ <http://www.gnu.org/licenses/>.
+*/
+
+#include "event-history.h"
+
+eh_t *
+eh_new (size_t buffer_size, gf_boolean_t use_buffer_once)
+{
+ eh_t *history = NULL;
+ buffer_t *buffer = NULL;
+
+ history = GF_CALLOC (1, sizeof (eh_t), gf_common_mt_eh_t);
+ if (!history) {
+ gf_log ("", GF_LOG_ERROR, "allocating history failed.");
+ goto out;
+ }
+
+ buffer = cb_buffer_new (buffer_size, use_buffer_once);
+ if (!buffer) {
+ gf_log ("", GF_LOG_ERROR, "allocating circular buffer failed");
+ GF_FREE (history);
+ history = NULL;
+ }
+
+ history->buffer = buffer;
+
+ pthread_mutex_init (&history->lock, NULL);
+out:
+ return history;
+}
+
+void
+eh_dump (eh_t *history, void *data,
+ int (dump_fn) (circular_buffer_t *buffer, void *data))
+{
+ if (!history) {
+ gf_log ("", GF_LOG_DEBUG, "history is NULL");
+ goto out;
+ }
+
+ cb_buffer_dump (history->buffer, data, dump_fn);
+
+out:
+ return;
+}
+
+int
+eh_save_history (eh_t *history, void *data)
+{
+ int ret = -1;
+
+ ret = cb_add_entry_buffer (history->buffer, data);
+
+ return ret;
+}
+
+int
+eh_destroy (eh_t *history)
+{
+ if (!history) {
+ gf_log ("", GF_LOG_INFO, "history for the xlator is "
+ "NULL");
+ return -1;
+ }
+
+ cb_buffer_destroy (history->buffer);
+ history->buffer = NULL;
+
+ pthread_mutex_destroy (&history->lock);
+
+ GF_FREE (history);
+
+ return 0;
+}