SoW-2020-0002: Trace Hit Counters: trigger error reporting integration
[lttng-tools.git] / src / bin / lttng-sessiond / ust-ctl-internal.h
index 7c245bdce266489e54b8258c4de06fbc343ae0a6..51aca37a9b526070a885eaec1cb4e95b332ca198 100644 (file)
@@ -79,12 +79,22 @@ int ustctl_set_filter(int sock, struct lttng_ust_filter_bytecode *bytecode,
                struct lttng_ust_object_data *obj_data);
 int ustctl_set_exclusion(int sock, struct lttng_ust_event_exclusion *exclusion,
                struct lttng_ust_object_data *obj_data);
+int ustctl_set_capture(int sock, struct lttng_ust_capture_bytecode *bytecode,
+               struct lttng_ust_object_data *obj_data);
 
 int ustctl_enable(int sock, struct lttng_ust_object_data *object);
 int ustctl_disable(int sock, struct lttng_ust_object_data *object);
 int ustctl_start_session(int sock, int handle);
 int ustctl_stop_session(int sock, int handle);
 
+int ustctl_create_trigger_group(int sock,
+               int pipe_fd,
+               struct lttng_ust_object_data **trigger_group_handle);
+int ustctl_create_trigger(int sock,
+               struct lttng_ust_trigger *trigger,
+               struct lttng_ust_object_data *trigger_group_handle,
+               struct lttng_ust_object_data **trigger_data);
+
 /*
  * ustctl_tracepoint_list returns a tracepoint list handle, or negative
  * error value.
@@ -533,4 +543,82 @@ int ustctl_reply_register_channel(int sock,
        enum ustctl_channel_header header_type,
        int ret_code);                  /* return code. 0 ok, negative error */
 
+/*
+ * Counter API.
+ */
+
+enum ustctl_counter_bitness {
+       USTCTL_COUNTER_BITNESS_32 = 4,
+       USTCTL_COUNTER_BITNESS_64 = 8,
+};
+
+enum ustctl_counter_arithmetic {
+       USTCTL_COUNTER_ARITHMETIC_MODULAR       = 0,
+       USTCTL_COUNTER_ARITHMETIC_SATURATION    = 1,
+};
+
+/* Used as alloc flags. */
+enum ustctl_counter_alloc {
+       USTCTL_COUNTER_ALLOC_PER_CPU = (1 << 0),
+       USTCTL_COUNTER_ALLOC_GLOBAL = (1 << 1),
+};
+
+struct ustctl_daemon_counter;
+
+int ustctl_get_nr_cpu_per_counter(void);
+
+struct ustctl_counter_dimension {
+       uint64_t size;
+       uint64_t underflow_index;
+       uint64_t overflow_index;
+       uint8_t has_underflow;
+       uint8_t has_overflow;
+};
+
+struct ustctl_daemon_counter *
+       ustctl_create_counter(size_t nr_dimensions,
+               const struct ustctl_counter_dimension *dimensions,
+               int64_t global_sum_step,
+               int global_counter_fd,
+               int nr_counter_cpu_fds,
+               const int *counter_cpu_fds,
+               enum ustctl_counter_bitness bitness,
+               enum ustctl_counter_arithmetic arithmetic,
+               uint32_t alloc_flags);
+
+int ustctl_create_counter_data(struct ustctl_daemon_counter *counter,
+               struct lttng_ust_object_data **counter_data);
+
+int ustctl_create_counter_global_data(struct ustctl_daemon_counter *counter,
+               struct lttng_ust_object_data **counter_global_data);
+int ustctl_create_counter_cpu_data(struct ustctl_daemon_counter *counter, int cpu,
+               struct lttng_ust_object_data **counter_cpu_data);
+
+/*
+ * Each counter data and counter cpu data created need to be destroyed
+ * before calling ustctl_destroy_counter().
+ */
+void ustctl_destroy_counter(struct ustctl_daemon_counter *counter);
+
+int ustctl_send_counter_data_to_ust(int sock, int parent_handle,
+               struct lttng_ust_object_data *counter_data);
+int ustctl_send_counter_global_data_to_ust(int sock,
+               struct lttng_ust_object_data *counter_data,
+               struct lttng_ust_object_data *counter_global_data);
+int ustctl_send_counter_cpu_data_to_ust(int sock,
+               struct lttng_ust_object_data *counter_data,
+               struct lttng_ust_object_data *counter_cpu_data);
+
+int ustctl_counter_read(struct ustctl_daemon_counter *counter,
+               const size_t *dimension_indexes,
+               int cpu, int64_t *value,
+               bool *overflow, bool *underflow);
+int ustctl_counter_aggregate(struct ustctl_daemon_counter *counter,
+               const size_t *dimension_indexes,
+               int64_t *value,
+               bool *overflow, bool *underflow);
+int ustctl_counter_clear(struct ustctl_daemon_counter *counter,
+               const size_t *dimension_indexes);
+
+
 #endif /* LTTNG_UST_CTL_INTERNAL_H */
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