struct lttng_ust_bytecode_runtime_private;
/*
- * This structure is used in the probes. More specifically, the
- * `interpreter_funcs` and `node` fields are explicity used in the
- * probes. When modifying this structure we must not change the layout
- * of these two fields as it is considered ABI.
+ * IMPORTANT: this structure is part of the ABI between the probe and
+ * UST. Fields need to be only added at the end, never reordered, never
+ * removed.
+ *
+ * The field @struct_size should be used to determine the size of the
+ * structure. It should be queried before using additional fields added
+ * at the end of the structure.
*/
-struct lttng_bytecode_runtime {
- struct lttng_ust_bytecode_runtime_private *priv;
+struct lttng_ust_bytecode_runtime {
+ uint32_t struct_size; /* Size of this structure. */
+ struct lttng_ust_bytecode_runtime_private *priv;
/* Associated bytecode */
union {
uint64_t (*filter)(void *interpreter_data,
struct lttng_interpreter_output *interpreter_output);
} interpreter_funcs;
struct cds_list_head node; /* list of bytecode runtime in event */
+
+ /* End of base ABI. Fields below should be used after checking struct_size. */
};
/*
int enabled;
int has_enablers_without_bytecode;
- /* list of struct lttng_bytecode_runtime, sorted by seqnum */
+ /* list of struct lttng_ust_bytecode_runtime, sorted by seqnum */
struct cds_list_head filter_bytecode_runtime_head;
/* End of base ABI. Fields below should be used after checking struct_size. */
*/
struct lttng_ust_event_notifier {
uint32_t struct_size; /* Size of this structure. */
+
struct lttng_ust_event_common *parent; /* Inheritance by aggregation. */
struct lttng_ust_event_notifier_private *priv; /* Private event notifier interface */
/* End of base ABI. Fields below should be used after checking struct_size. */
};
-struct lttng_enum {
- const struct lttng_ust_enum_desc *desc;
- struct lttng_session *session;
- struct cds_list_head node; /* Enum list in session */
- struct cds_hlist_node hlist; /* Session ht of enums */
- uint64_t id; /* Enumeration ID in sessiond */
-};
-
struct channel;
struct lttng_ust_shm_handle;
* IMPORTANT: this structure is part of the ABI between the probe and
* UST. Fields need to be only added at the end, never reordered, never
* removed.
+ *
+ * The field @struct_size should be used to determine the size of the
+ * structure. It should be queried before using additional fields added
+ * at the end of the structure.
*/
-struct lttng_channel_ops {
+struct lttng_ust_channel_ops {
+ uint32_t struct_size;
+
struct lttng_channel *(*channel_create)(const char *name,
void *buf_addr,
size_t subbuf_size, size_t num_subbuf,
int (*flush_buffer)(struct channel *chan, struct lttng_ust_shm_handle *handle);
void (*event_strcpy)(struct lttng_ust_lib_ring_buffer_ctx *ctx,
const char *src, size_t len);
+
+ /* End of base ABI. Fields below should be used after checking struct_size. */
};
/*
struct lttng_session *session;
int objd; /* Object associated to channel */
struct cds_list_head node; /* Channel list in session */
- const struct lttng_channel_ops *ops;
+ const struct lttng_ust_channel_ops *ops;
int header_type; /* 0: unset, 1: compact, 2: large */
struct lttng_ust_shm_handle *handle; /* shared-memory handle */
int tstate:1; /* Transient enable state */
};
-struct lttng_counter_dimension;
-
-struct lttng_counter_ops {
- struct lib_counter *(*counter_create)(size_t nr_dimensions,
- const struct lttng_counter_dimension *dimensions,
- int64_t global_sum_step,
- int global_counter_fd,
- int nr_counter_cpu_fds,
- const int *counter_cpu_fds,
- bool is_daemon);
- void (*counter_destroy)(struct lib_counter *counter);
- int (*counter_add)(struct lib_counter *counter,
- const size_t *dimension_indexes, int64_t v);
- int (*counter_read)(struct lib_counter *counter,
- const size_t *dimension_indexes, int cpu,
- int64_t *value, bool *overflow, bool *underflow);
- int (*counter_aggregate)(struct lib_counter *counter,
- const size_t *dimension_indexes, int64_t *value,
- bool *overflow, bool *underflow);
- int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes);
-};
+/*
+ * IMPORTANT: this structure is part of the ABI between the probe and
+ * UST. Fields need to be only added at the end, never reordered, never
+ * removed.
+ *
+ * The field @struct_size should be used to determine the size of the
+ * structure. It should be queried before using additional fields added
+ * at the end of the structure.
+ */
+struct lttng_ust_stack_ctx {
+ uint32_t struct_size; /* Size of this structure */
-#define LTTNG_UST_STACK_CTX_PADDING 32
-struct lttng_stack_ctx {
struct lttng_ust_event_recorder *event_recorder;
struct lttng_ctx *chan_ctx; /* RCU dereferenced. */
struct lttng_ctx *event_ctx; /* RCU dereferenced. */
- char padding[LTTNG_UST_STACK_CTX_PADDING];
-};
-
-#define LTTNG_UST_EVENT_HT_BITS 12
-#define LTTNG_UST_EVENT_HT_SIZE (1U << LTTNG_UST_EVENT_HT_BITS)
-
-struct lttng_ust_event_ht {
- struct cds_hlist_head table[LTTNG_UST_EVENT_HT_SIZE];
-};
-
-#define LTTNG_UST_EVENT_NOTIFIER_HT_BITS 12
-#define LTTNG_UST_EVENT_NOTIFIER_HT_SIZE (1U << LTTNG_UST_EVENT_NOTIFIER_HT_BITS)
-struct lttng_ust_event_notifier_ht {
- struct cds_hlist_head table[LTTNG_UST_EVENT_NOTIFIER_HT_SIZE];
-};
-#define LTTNG_UST_ENUM_HT_BITS 12
-#define LTTNG_UST_ENUM_HT_SIZE (1U << LTTNG_UST_ENUM_HT_BITS)
-
-struct lttng_ust_enum_ht {
- struct cds_hlist_head table[LTTNG_UST_ENUM_HT_SIZE];
+ /* End of base ABI. Fields below should be used after checking struct_size. */
};
struct lttng_ust_session_private;
void lttng_ust_probe_unregister(struct lttng_ust_probe_desc *desc);
/*
- * Can be used by applications that change their procname to clear the ust cached value.
+ * Applications that change their procname and need the new value to be
+ * reflected in the procname event context have to call this function to clear
+ * the internally cached value. This should not be called from a signal
+ * handler.
*/
-void lttng_context_procname_reset(void);
-
-struct lttng_transport *lttng_transport_find(const char *name);
-
-int lttng_session_active(void);
-
-void lttng_ust_dl_update(void *ip);
+void lttng_ust_context_procname_reset(void);
#ifdef __cplusplus
}
projects / lttng-ust.git / blobdiff