Implement ring buffer periodic buffer switch timer

[lttng-ust.git] / libringbuffer / frontend_types.h

diff --git a/libringbuffer/frontend_types.h b/libringbuffer/frontend_types.h
index 9d3932d8978d51b17f64c87af472c675e6472824..c23fdd2841e85f808e6505455205c67231be1aac 100644 (file)
--- a/libringbuffer/frontend_types.h
+++ b/libringbuffer/frontend_types.h
@@ -29,6 +29,7 @@
  */
 
 #include <string.h>
+#include <time.h>      /* for timer_t */
 
 #include <urcu/list.h>
 #include <urcu/uatomic.h>
@@ -37,6 +38,7 @@
 #include <usterr-signal-safe.h>
 #include "backend_types.h"
 #include "shm_internal.h"
+#include "shm_types.h"
 #include "vatomic.h"
 
 /*
@@ -56,12 +58,17 @@ struct channel {
                                                 * subbuffer index.
                                                 */
 
-       unsigned long switch_timer_interval;    /* Buffer flush (jiffies) */
-       unsigned long read_timer_interval;      /* Reader wakeup (jiffies) */
+       unsigned long switch_timer_interval;    /* Buffer flush (us) */
+       timer_t switch_timer;
+       int switch_timer_enabled;
+
+       unsigned long read_timer_interval;      /* Reader wakeup (us) */
+       //timer_t read_timer;
        //wait_queue_head_t read_wait;          /* reader wait queue */
        int finalized;                          /* Has channel been finalized */
        size_t priv_data_offset;
        unsigned int nr_streams;                /* Number of streams */
+       struct lttng_ust_shm_handle *handle;
        char padding[RB_CHANNEL_PADDING];
        /*
         * Associated backend contains a variable-length array. Needs to
@@ -118,8 +125,6 @@ struct lttng_ust_lib_ring_buffer {
        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 */