Add vpid context

[lttng-ust.git] / include / ust / lttng-events.h

diff --git a/include/ust/lttng-events.h b/include/ust/lttng-events.h
index b15182c80f08357c08426f97acb223a788314e9c..0439ea7a18c4bab8d372e38ec63ff9a6d5292a14 100644 (file)
--- a/include/ust/lttng-events.h
+++ b/include/ust/lttng-events.h
@@ -72,11 +72,14 @@ struct lttng_integer_type {
        enum lttng_string_encodings encoding;
 };
 
+/*
+ * Only float and double are supported. long double is not supported at
+ * the moment.
+ */
 #define _float_mant_dig(_type)                                         \
        (sizeof(_type) == sizeof(float) ? FLT_MANT_DIG                  \
                : (sizeof(_type) == sizeof(double) ? DBL_MANT_DIG       \
-               : (sizeof(_type) == sizeof(long double) ? LDBL_MANT_DIG \
-               : 0)))
+               : 0))
 
 #define __type_float(_type)                                    \
        {                                                       \
@@ -87,7 +90,6 @@ struct lttng_integer_type {
                                - _float_mant_dig(_type),       \
                  .mant_dig = _float_mant_dig(_type),           \
                  .alignment = lttng_alignof(_type) * CHAR_BIT, \
-                 .signedness = lttng_is_signed_type(_type),    \
                  .reverse_byte_order = __BYTE_ORDER != __FLOAT_WORD_ORDER, \
                },                                              \
        }                                                       \
@@ -177,6 +179,8 @@ struct lttng_probe_desc {
        struct cds_list_head head;              /* chain registered probes */
 };
 
+struct ust_pending_probe;
+
 /*
  * ltt_event structure is referred to by the tracing fast path. It must be
  * kept small.
@@ -192,21 +196,29 @@ struct ltt_event {
        union {
        } u;
        struct cds_list_head list;              /* Event list */
+       struct ust_pending_probe *pending_probe;
        int metadata_dumped:1;
 };
 
 struct channel;
+struct shm_handle;
 
 struct ltt_channel_ops {
-       struct shm_handle *(*channel_create)(const char *name,
+       struct ltt_channel *(*channel_create)(const char *name,
                                struct ltt_channel *ltt_chan,
                                void *buf_addr,
                                size_t subbuf_size, size_t num_subbuf,
                                unsigned int switch_timer_interval,
-                               unsigned int read_timer_interval);
-       void (*channel_destroy)(struct shm_handle *handle);
-       struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan);
-       void (*buffer_read_close)(struct lib_ring_buffer *buf);
+                               unsigned int read_timer_interval,
+                               int *shm_fd, int *wait_fd,
+                               uint64_t *memory_map_size);
+       void (*channel_destroy)(struct ltt_channel *ltt_chan);
+       struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan,
+                               struct shm_handle *handle,
+                               int *shm_fd, int *wait_fd,
+                               uint64_t *memory_map_size);
+       void (*buffer_read_close)(struct lib_ring_buffer *buf,
+                               struct shm_handle *handle);
        int (*event_reserve)(struct lib_ring_buffer_ctx *ctx,
                             uint32_t event_id);
        void (*event_commit)(struct lib_ring_buffer_ctx *ctx);
@@ -217,7 +229,8 @@ struct ltt_channel_ops {
         * packet. Note that the size returned is only a hint, since it
         * may change due to concurrent writes.
         */
-       size_t (*packet_avail_size)(struct channel *chan);
+       size_t (*packet_avail_size)(struct channel *chan,
+                                   struct shm_handle *handle);
        //wait_queue_head_t *(*get_reader_wait_queue)(struct channel *chan);
        //wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan);
        int (*is_finalized)(struct channel *chan);
@@ -233,6 +246,7 @@ struct ltt_channel {
        struct ltt_session *session;
        int objd;                       /* Object associated to channel */
        unsigned int free_event_id;     /* Next event ID to allocate */
+       unsigned int used_event_id;     /* Max allocated event IDs */
        struct cds_list_head list;      /* Channel list */
        struct ltt_channel_ops *ops;
        int header_type;                /* 0: unset, 1: compact, 2: large */
@@ -269,12 +283,16 @@ struct ltt_channel *ltt_channel_create(struct ltt_session *session,
                                       void *buf_addr,
                                       size_t subbuf_size, size_t num_subbuf,
                                       unsigned int switch_timer_interval,
-                                      unsigned int read_timer_interval);
+                                      unsigned int read_timer_interval,
+                                      int *shm_fd, int *wait_fd,
+                                      uint64_t *memory_map_size);
 struct ltt_channel *ltt_global_channel_create(struct ltt_session *session,
                                       int overwrite, void *buf_addr,
                                       size_t subbuf_size, size_t num_subbuf,
                                       unsigned int switch_timer_interval,
-                                      unsigned int read_timer_interval);
+                                      unsigned int read_timer_interval,
+                                      int *shm_fd, int *wait_fd,
+                                      uint64_t *memory_map_size);
 
 struct ltt_event *ltt_event_create(struct ltt_channel *chan,
                                   struct lttng_ust_event *event_param,
@@ -289,21 +307,23 @@ void ltt_transport_register(struct ltt_transport *transport);
 void ltt_transport_unregister(struct ltt_transport *transport);
 
 void synchronize_trace(void);
-//int ltt_debugfs_abi_init(void);
-//void ltt_debugfs_abi_exit(void);
 
 int ltt_probe_register(struct lttng_probe_desc *desc);
 void ltt_probe_unregister(struct lttng_probe_desc *desc);
+int pending_probe_fix_events(const struct lttng_event_desc *desc);
 const struct lttng_event_desc *ltt_event_get(const char *name);
 void ltt_event_put(const struct lttng_event_desc *desc);
 int ltt_probes_init(void);
 void ltt_probes_exit(void);
-struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx);
-void lttng_remove_context_field(struct lttng_ctx **ctx,
+int lttng_find_context(struct lttng_ctx *ctx, const char *name);
+struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx_p);
+void lttng_remove_context_field(struct lttng_ctx **ctx_p,
                                struct lttng_ctx_field *field);
 void lttng_destroy_context(struct lttng_ctx *ctx);
 int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx);
-
-//extern const struct file_operations lttng_tracepoint_list_fops;
+int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_pthread_id_to_ctx(struct lttng_ctx **ctx);
+void lttng_context_vtid_reset(void);
+void lttng_context_vpid_reset(void);
 
 #endif /* _UST_LTTNG_EVENTS_H */