X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=libringbuffer%2Ffrontend_types.h;h=d0890408eb9bfa4965fda6f1326d00693530a6d8;hb=HEAD;hp=1d47b275b6fabd3cdc2c5351771662b4989378f7;hpb=3c8964ba54f920c4a33b1e371c4c07ddcdc40383;p=lttng-ust.git

diff --git a/libringbuffer/frontend_types.h b/libringbuffer/frontend_types.h
deleted file mode 100644
index 1d47b275..00000000
--- a/libringbuffer/frontend_types.h
+++ /dev/null
@@ -1,156 +0,0 @@
-#ifndef _LINUX_RING_BUFFER_FRONTEND_TYPES_H
-#define _LINUX_RING_BUFFER_FRONTEND_TYPES_H
-
-/*
- * linux/ringbuffer/frontend_types.h
- *
- * (C) Copyright 2005-2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * Ring Buffer Library Synchronization Header (types).
- *
- * Author:
- *	Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * See ring_buffer_frontend.c for more information on wait-free algorithms.
- *
- * Dual LGPL v2.1/GPL v2 license.
- */
-
-#include <string.h>
-
-#include <urcu/list.h>
-#include <urcu/uatomic.h>
-
-#include <lttng/ringbuffer-config.h>
-#include <usterr-signal-safe.h>
-#include "backend_types.h"
-#include "shm_internal.h"
-#include "vatomic.h"
-
-/*
- * A switch is done during tracing or as a final flush after tracing (so it
- * won't write in the new sub-buffer).
- */
-enum switch_mode { SWITCH_ACTIVE, SWITCH_FLUSH };
-
-/* channel: collection of per-cpu ring buffers. */
-#define RB_CHANNEL_PADDING	64
-struct channel {
-	int record_disabled;
-	unsigned long commit_count_mask;	/*
-						 * Commit count mask, removing
-						 * the MSBs corresponding to
-						 * bits used to represent the
-						 * subbuffer index.
-						 */
-
-	unsigned long switch_timer_interval;	/* Buffer flush (jiffies) */
-	unsigned long read_timer_interval;	/* Reader wakeup (jiffies) */
-	//wait_queue_head_t read_wait;		/* reader wait queue */
-	int finalized;				/* Has channel been finalized */
-	size_t priv_data_offset;
-	/*
-	 * Associated backend contains a variable-length array. Needs to
-	 * be last member.
-	 */
-	struct channel_backend backend;		/* Associated backend */
-	char padding[RB_CHANNEL_PADDING];
-} __attribute__((aligned(CAA_CACHE_LINE_SIZE)));
-
-/* Per-subbuffer commit counters used on the hot path */
-#define RB_COMMIT_COUNT_HOT_PADDING	16
-struct commit_counters_hot {
-	union v_atomic cc;		/* Commit counter */
-	union v_atomic seq;		/* Consecutive commits */
-	char padding[RB_COMMIT_COUNT_HOT_PADDING];
-} __attribute__((aligned(CAA_CACHE_LINE_SIZE)));
-
-/* Per-subbuffer commit counters used only on cold paths */
-#define RB_COMMIT_COUNT_COLD_PADDING	24
-struct commit_counters_cold {
-	union v_atomic cc_sb;		/* Incremented _once_ at sb switch */
-	char padding[RB_COMMIT_COUNT_COLD_PADDING];
-} __attribute__((aligned(CAA_CACHE_LINE_SIZE)));
-
-/* ring buffer state */
-#define RB_RING_BUFFER_PADDING		64
-struct lttng_ust_lib_ring_buffer {
-	/* First 32 bytes cache-hot cacheline */
-	union v_atomic offset;		/* Current offset in the buffer */
-	DECLARE_SHMP(struct commit_counters_hot, commit_hot);
-					/* Commit count per sub-buffer */
-	long consumed;			/*
-					 * Current offset in the buffer
-					 * standard atomic access (shared)
-					 */
-	int record_disabled;
-	/* End of first 32 bytes cacheline */
-	union v_atomic last_tsc;	/*
-					 * Last timestamp written in the buffer.
-					 */
-
-	struct lttng_ust_lib_ring_buffer_backend backend;	/* Associated backend */
-
-	DECLARE_SHMP(struct commit_counters_cold, commit_cold);
-					/* Commit count per sub-buffer */
-	long active_readers;		/*
-					 * Active readers count
-					 * standard atomic access (shared)
-					 */
-	long active_shadow_readers;
-					/* Dropped records */
-	union v_atomic records_lost_full;	/* Buffer full */
-	union v_atomic records_lost_wrap;	/* Nested wrap-around */
-	union v_atomic records_lost_big;	/* Events too big */
-	union v_atomic records_count;	/* Number of records written */
-	union v_atomic records_overrun;	/* Number of overwritten records */
-	//wait_queue_head_t read_wait;	/* reader buffer-level wait queue */
-	int finalized;			/* buffer has been finalized */
-	//struct timer_list switch_timer;	/* timer for periodical switch */
-	//struct timer_list read_timer;	/* timer for read poll */
-	unsigned long get_subbuf_consumed;	/* Read-side consumed */
-	unsigned long prod_snapshot;	/* Producer count snapshot */
-	unsigned long cons_snapshot;	/* Consumer count snapshot */
-	unsigned int get_subbuf:1,	/* Sub-buffer being held by reader */
-		switch_timer_enabled:1,	/* Protected by ring_buffer_nohz_lock */
-		read_timer_enabled:1;	/* Protected by ring_buffer_nohz_lock */
-	/* shmp pointer to self */
-	DECLARE_SHMP(struct lttng_ust_lib_ring_buffer, self);
-	char padding[RB_RING_BUFFER_PADDING];
-} __attribute__((aligned(CAA_CACHE_LINE_SIZE)));
-
-static inline
-void *channel_get_private(struct channel *chan)
-{
-	return ((char *) chan) + chan->priv_data_offset;
-}
-
-#ifndef __rb_same_type
-#define __rb_same_type(a, b)	__builtin_types_compatible_p(typeof(a), typeof(b))
-#endif
-
-/*
- * Issue warnings and disable channels upon internal error.
- * Can receive struct lttng_ust_lib_ring_buffer or struct lttng_ust_lib_ring_buffer_backend
- * parameters.
- */
-#define CHAN_WARN_ON(c, cond)						\
-	({								\
-		struct channel *__chan;					\
-		int _____ret = caa_unlikely(cond);				\
-		if (_____ret) {						\
-			if (__rb_same_type(*(c), struct channel_backend))	\
-				__chan = caa_container_of((void *) (c),	\
-							struct channel, \
-							backend);	\
-			else if (__rb_same_type(*(c), struct channel))	\
-				__chan = (void *) (c);			\
-			else						\
-				BUG_ON(1);				\
-			uatomic_inc(&__chan->record_disabled);		\
-			WARN_ON(1);					\
-		}							\
-		_____ret;						\
-	})
-
-#endif /* _LINUX_RING_BUFFER_FRONTEND_TYPES_H */