1 files changed, 72 insertions, 0 deletions
diff --git a/libglusterfs/src/circ-buff.h b/libglusterfs/src/circ-buff.h
new file mode 100644
index 00000000000..d5172500e78
--- /dev/null
+++ b/libglusterfs/src/circ-buff.h
@@ -0,0 +1,72 @@
+/*
+  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/>.
+*/
+
+#ifndef _CB_H
+#define _CB_H
+
+#include "common-utils.h"
+#include "logging.h"
+#include "mem-types.h"
+
+#define BUFFER_SIZE 10
+#define TOTAL_SIZE BUFFER_SIZE + 1
+
+
+struct _circular_buffer {
+        struct timeval tv;
+        void *data;
+};
+
+typedef struct _circular_buffer circular_buffer_t;
+
+struct _buffer {
+        unsigned int w_index;
+        size_t  size_buffer;
+        gf_boolean_t use_once;
+        /* This variable is assigned the proper value at the time of initing */
+        /* the buffer. It indicates, whether the buffer should be used once */
+        /*  it becomes full. */
+
+        int  used_len;
+        /* indicates the amount of circular buffer used. */
+
+        circular_buffer_t **cb;
+
+        pthread_mutex_t   lock;
+};
+
+typedef struct _buffer buffer_t;
+
+int
+cb_add_entry_buffer (buffer_t *buffer, void *item);
+
+void
+cb_buffer_show (buffer_t *buffer);
+
+buffer_t *
+cb_buffer_new (size_t buffer_size,gf_boolean_t use_buffer_once);
+
+void
+cb_buffer_destroy (buffer_t *buffer);
+
+void
+cb_buffer_dump (buffer_t *buffer, void *data,
+                int (fn) (circular_buffer_t *buffer, void *data));
+
+#endif /* _CB_H */