1 files changed, 82 insertions, 0 deletions
diff --git a/libglusterfs/src/event-history.c b/libglusterfs/src/event-history.c
new file mode 100644
index 00000000000..379fed866be
--- /dev/null
+++ b/libglusterfs/src/event-history.c
@@ -0,0 +1,82 @@
+/*
+  Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
+  This file is part of GlusterFS.
+
+  This file is licensed to you under your choice of the GNU Lesser
+  General Public License, version 3 or any later version (LGPLv3 or
+  later), or the GNU General Public License, version 2 (GPLv2), in all
+  cases as published by the Free Software Foundation.
+*/
+
+#include "glusterfs/event-history.h"
+#include "glusterfs/libglusterfs-messages.h"
+
+eh_t *
+eh_new(size_t buffer_size, gf_boolean_t use_buffer_once,
+       void (*destroy_buffer_data)(void *data))
+{
+    eh_t *history = NULL;
+    buffer_t *buffer = NULL;
+
+    history = GF_CALLOC(1, sizeof(eh_t), gf_common_mt_eh_t);
+    if (!history) {
+        goto out;
+    }
+
+    buffer = cb_buffer_new(buffer_size, use_buffer_once, destroy_buffer_data);
+    if (!buffer) {
+        GF_FREE(history);
+        history = NULL;
+        goto out;
+    }
+
+    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_msg_debug("event-history", 0, "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_msg("event-history", GF_LOG_INFO, 0, LG_MSG_INVALID_ARG,
+               "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;
+}