From db20a0f8a99f715a77366e518720612f043d5c9e Mon Sep 17 00:00:00 2001 From: Raghavendra Bhat Date: Mon, 20 Feb 2012 18:42:37 +0530 Subject: libglusterfs: Implement circular buffer and event history Implement circular buffer framework, so that it can be used by other components such as event history management. And event history is implemented which can be used by xlator to dump some information to a file (such as information of some structure etc). Through statedump, history of each xlator can be dumped. An option called history should be given to the statedump command. Change-Id: I7c5e8f6bd1018584eaee856e933e7c4b94c6709c BUG: 795419 Signed-off-by: Raghavendra Bhat Reviewed-on: http://review.gluster.com/2769 Tested-by: Gluster Build System Reviewed-by: Vijay Bellur --- libglusterfs/src/event-history.h | 52 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 libglusterfs/src/event-history.h (limited to 'libglusterfs/src/event-history.h') diff --git a/libglusterfs/src/event-history.h b/libglusterfs/src/event-history.h new file mode 100644 index 000000000..c6e8fb4fa --- /dev/null +++ b/libglusterfs/src/event-history.h @@ -0,0 +1,52 @@ +/* + Copyright (c) 2012 Gluster, Inc. + 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 + . +*/ + +#ifndef _EH_H +#define _EH_H + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif + +#include "mem-types.h" +#include "circ-buff.h" + +struct event_hist +{ + buffer_t *buffer; + pthread_mutex_t lock; +}; + +typedef struct event_hist eh_t; + +void +eh_dump (eh_t *event , void *data, + int (fn) (circular_buffer_t *buffer, void *data)); + +eh_t * +eh_new (size_t buffer_size, gf_boolean_t use_buffer_once); + +int +eh_save_history (eh_t *history, void *string); + +int +eh_destroy (eh_t *history); + +#endif /* _EH_H */ -- cgit