ust-event.h: use BYTE_ORDER instead of __BYTE_ORDER
[lttng-ust.git] / include / lttng / ust-events.h
index 6c272172a3a40dc61fe6a52eca601500d6f5dd41..476ddd7845a5ea264bf0b837ad37aaa91ad66d86 100644 (file)
  */
 
 #include <urcu/list.h>
-#include <uuid/uuid.h>
+#include <urcu/hlist.h>
 #include <stdint.h>
 #include <lttng/ust-abi.h>
 #include <lttng/ust-tracer.h>
-#include <endian.h>
+#include <lttng/ust-endian.h>
 #include <float.h>
-#include <lttng/tracepoint-internal.h>
+
+#define LTTNG_UST_UUID_LEN             16
 
 struct ltt_channel;
 struct ltt_session;
@@ -76,7 +77,7 @@ struct lttng_enum_entry {
                  .size = sizeof(_type) * CHAR_BIT,             \
                  .alignment = lttng_alignof(_type) * CHAR_BIT, \
                  .signedness = lttng_is_signed_type(_type),    \
-                 .reverse_byte_order = _byte_order != __BYTE_ORDER,    \
+                 .reverse_byte_order = _byte_order != BYTE_ORDER,      \
                  .base = _base,                                \
                  .encoding = lttng_encode_##_encoding,         \
                },                                              \
@@ -157,7 +158,7 @@ struct lttng_enum {
        const char *name;
        struct lttng_type container_type;
        const struct lttng_enum_entry *entries;
-       nsigned int len;
+       unsigned int len;
 };
 
 /* Event field description */
@@ -184,20 +185,61 @@ struct lttng_ctx {
        unsigned int allocated_fields;
 };
 
+/*
+ * Entry describing a per-session active wildcard, along with the event
+ * attribute and channel information configuring the events that need to
+ * be enabled.
+ */
+struct session_wildcard {
+       struct ltt_channel *chan;
+       struct lttng_ctx *ctx;  /* TODO */
+       struct lttng_ust_event event_param;
+       struct cds_list_head events;    /* list of events enabled */
+       struct cds_list_head list;      /* per-session list of wildcards */
+       struct cds_list_head session_list; /* node of session wildcard list */
+       struct wildcard_entry *entry;
+       unsigned int enabled:1;
+};
+
+/*
+ * Entry describing an active wildcard (per name) for all sessions.
+ */
+struct wildcard_entry {
+       /* node of global wildcards list */
+       struct cds_list_head list;
+       /* head of session list to which this wildcard apply */
+       struct cds_list_head session_list;
+       enum lttng_ust_loglevel_type loglevel_type;
+       int loglevel;
+       char name[0];
+};
+
 struct lttng_event_desc {
        const char *name;
        void *probe_callback;
        const struct lttng_event_ctx *ctx;      /* context */
        const struct lttng_event_field *fields; /* event payload */
        unsigned int nr_fields;
+       const int **loglevel;
 };
 
 struct lttng_probe_desc {
-       const struct lttng_event_desc *event_desc;
+       const char *provider;
+       const struct lttng_event_desc **event_desc;
        unsigned int nr_events;
        struct cds_list_head head;              /* chain registered probes */
 };
 
+struct tp_list_entry {
+       struct lttng_ust_tracepoint_iter tp;
+       struct cds_list_head head;
+};
+
+struct lttng_ust_tracepoint_list {
+       struct tp_list_entry *iter;
+       struct cds_list_head head;
+};
+
 struct ust_pending_probe;
 
 /*
@@ -215,8 +257,9 @@ struct ltt_event {
        union {
        } u;
        struct cds_list_head list;              /* Event list */
+       struct cds_list_head wildcard_list;     /* Event list for wildcard */
        struct ust_pending_probe *pending_probe;
-       int metadata_dumped:1;
+       unsigned int metadata_dumped:1;
 };
 
 struct channel;
@@ -228,14 +271,14 @@ struct ltt_channel_ops {
                                size_t subbuf_size, size_t num_subbuf,
                                unsigned int switch_timer_interval,
                                unsigned int read_timer_interval,
-                               int *shm_fd, int *wait_fd,
-                               uint64_t *memory_map_size,
+                               int **shm_fd, int **wait_fd,
+                               uint64_t **memory_map_size,
                                struct ltt_channel *chan_priv_init);
        void (*channel_destroy)(struct ltt_channel *ltt_chan);
        struct lttng_ust_lib_ring_buffer *(*buffer_read_open)(struct channel *chan,
                                struct lttng_ust_shm_handle *handle,
-                               int *shm_fd, int *wait_fd,
-                               uint64_t *memory_map_size);
+                               int **shm_fd, int **wait_fd,
+                               uint64_t **memory_map_size);
        void (*buffer_read_close)(struct lttng_ust_lib_ring_buffer *buf,
                                struct lttng_ust_shm_handle *handle);
        int (*event_reserve)(struct lttng_ust_lib_ring_buffer_ctx *ctx,
@@ -276,12 +319,12 @@ struct ltt_channel {
        struct ltt_channel_ops *ops;
        int header_type;                /* 0: unset, 1: compact, 2: large */
        struct lttng_ust_shm_handle *handle;    /* shared-memory handle */
-       int metadata_dumped:1;
+       unsigned int metadata_dumped:1;
 
        /* Channel ID, available for consumer too */
        unsigned int id;
        /* Copy of session UUID for consumer (availability through shm) */
-       uuid_t uuid;                    /* Trace session unique ID */
+       unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */
 };
 
 struct ltt_session {
@@ -291,10 +334,11 @@ struct ltt_session {
        struct ltt_channel *metadata;   /* Metadata channel */
        struct cds_list_head chan;      /* Channel list head */
        struct cds_list_head events;    /* Event list head */
+       struct cds_list_head wildcards; /* Wildcard list head */
        struct cds_list_head list;      /* Session list */
        unsigned int free_chan_id;      /* Next chan ID to allocate */
-       uuid_t uuid;                    /* Trace session unique ID */
-       int metadata_dumped:1;
+       unsigned char uuid[LTTNG_UST_UUID_LEN]; /* Trace session unique ID */
+       unsigned int metadata_dumped:1;
 };
 
 struct ltt_transport {
@@ -303,11 +347,6 @@ struct ltt_transport {
        struct ltt_channel_ops ops;
 };
 
-struct ltt_tracepoint_list {
-       struct tracepoint_iter iter;
-       int got_first;
-};
-
 struct ltt_session *ltt_session_create(void);
 int ltt_session_enable(struct ltt_session *session);
 int ltt_session_disable(struct ltt_session *session);
@@ -319,20 +358,21 @@ struct ltt_channel *ltt_channel_create(struct ltt_session *session,
                                       size_t subbuf_size, size_t num_subbuf,
                                       unsigned int switch_timer_interval,
                                       unsigned int read_timer_interval,
-                                      int *shm_fd, int *wait_fd,
-                                      uint64_t *memory_map_size,
+                                      int **shm_fd, int **wait_fd,
+                                      uint64_t **memory_map_size,
                                       struct ltt_channel *chan_priv_init);
 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,
-                                      int *shm_fd, int *wait_fd,
-                                      uint64_t *memory_map_size);
+                                      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,
-                                  void *filter);
+int ltt_event_create(struct ltt_channel *chan,
+               struct lttng_ust_event *event_param,
+               void *filter,
+               struct ltt_event **event);
 
 int ltt_channel_enable(struct ltt_channel *channel);
 int ltt_channel_disable(struct ltt_channel *channel);
@@ -369,4 +409,20 @@ const struct lttng_ust_lib_ring_buffer_client_cb *lttng_client_callbacks_overwri
 
 struct ltt_transport *ltt_transport_find(const char *name);
 
+int ltt_probes_get_event_list(struct lttng_ust_tracepoint_list *list);
+void ltt_probes_prune_event_list(struct lttng_ust_tracepoint_list *list);
+struct lttng_ust_tracepoint_iter *
+       lttng_ust_tracepoint_list_get_iter_next(struct lttng_ust_tracepoint_list *list);
+
+int ltt_wildcard_enable(struct session_wildcard *wildcard);
+int ltt_wildcard_disable(struct session_wildcard *wildcard);
+int ltt_wildcard_create(struct ltt_channel *chan,
+       struct lttng_ust_event *event_param,
+       struct session_wildcard **sl);
+int ltt_loglevel_match(const struct lttng_event_desc *desc,
+               enum lttng_ust_loglevel_type req_type,
+               int req_loglevel);
+void ltt_probes_create_wildcard_events(struct wildcard_entry *entry,
+                               struct session_wildcard *wildcard);
+
 #endif /* _LTTNG_UST_EVENTS_H */
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