struct lttng_ust_event_common_private {
struct lttng_ust_event_common *pub; /* Public event interface */
- struct lttng_ust_event_desc *desc;
+ const struct lttng_ust_event_desc *desc;
/* Backward references: list of lttng_enabler_ref (ref to enablers) */
struct cds_list_head enablers_ref_head;
int registered; /* has reg'd tracepoint probe */
};
struct lttng_enum {
- struct lttng_ust_enum_desc *desc;
+ const struct lttng_ust_enum_desc *desc;
struct lttng_ust_session *session;
struct cds_list_head node; /* Enum list in session */
struct cds_hlist_node hlist; /* Session ht of enums */
int unused11:1;
};
+/* Global (filter), event and channel contexts. */
+struct lttng_ust_ctx {
+ struct lttng_ust_ctx_field *fields;
+ unsigned int nr_fields;
+ unsigned int allocated_fields;
+ unsigned int largest_align;
+};
+
+struct lttng_ust_registered_probe {
+ const struct lttng_ust_probe_desc *desc;
+
+ struct cds_list_head head; /* chain registered probes */
+ struct cds_list_head lazy_init_head;
+ int lazy; /* lazy registration */
+};
+
+/*
+ * Context field
+ */
+
+struct lttng_ust_ctx_field {
+ const struct lttng_ust_event_field *event_field;
+ size_t (*get_size)(void *priv, size_t offset);
+ void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx,
+ struct lttng_ust_channel_buffer *chan);
+ void (*get_value)(void *priv, struct lttng_ust_ctx_value *value);
+ void (*destroy)(void *priv);
+ void *priv;
+};
+
static inline
-struct lttng_ust_type_integer *lttng_ust_get_type_integer(struct lttng_ust_type_common *type)
+const struct lttng_ust_type_integer *lttng_ust_get_type_integer(const struct lttng_ust_type_common *type)
{
if (type->type != lttng_ust_type_integer)
return NULL;
- return caa_container_of(type, struct lttng_ust_type_integer, parent);
+ return caa_container_of(type, const struct lttng_ust_type_integer, parent);
}
static inline
-struct lttng_ust_type_float *lttng_ust_get_type_float(struct lttng_ust_type_common *type)
+const struct lttng_ust_type_float *lttng_ust_get_type_float(const struct lttng_ust_type_common *type)
{
if (type->type != lttng_ust_type_float)
return NULL;
- return caa_container_of(type, struct lttng_ust_type_float, parent);
+ return caa_container_of(type, const struct lttng_ust_type_float, parent);
}
static inline
-struct lttng_ust_type_string *lttng_ust_get_type_string(struct lttng_ust_type_common *type)
+const struct lttng_ust_type_string *lttng_ust_get_type_string(const struct lttng_ust_type_common *type)
{
if (type->type != lttng_ust_type_string)
return NULL;
- return caa_container_of(type, struct lttng_ust_type_string, parent);
+ return caa_container_of(type, const struct lttng_ust_type_string, parent);
}
static inline
-struct lttng_ust_type_enum *lttng_ust_get_type_enum(struct lttng_ust_type_common *type)
+const struct lttng_ust_type_enum *lttng_ust_get_type_enum(const struct lttng_ust_type_common *type)
{
if (type->type != lttng_ust_type_enum)
return NULL;
- return caa_container_of(type, struct lttng_ust_type_enum, parent);
+ return caa_container_of(type, const struct lttng_ust_type_enum, parent);
}
static inline
-struct lttng_ust_type_array *lttng_ust_get_type_array(struct lttng_ust_type_common *type)
+const struct lttng_ust_type_array *lttng_ust_get_type_array(const struct lttng_ust_type_common *type)
{
if (type->type != lttng_ust_type_array)
return NULL;
- return caa_container_of(type, struct lttng_ust_type_array, parent);
+ return caa_container_of(type, const struct lttng_ust_type_array, parent);
}
static inline
-struct lttng_ust_type_sequence *lttng_ust_get_type_sequence(struct lttng_ust_type_common *type)
+const struct lttng_ust_type_sequence *lttng_ust_get_type_sequence(const struct lttng_ust_type_common *type)
{
if (type->type != lttng_ust_type_sequence)
return NULL;
- return caa_container_of(type, struct lttng_ust_type_sequence, parent);
+ return caa_container_of(type, const struct lttng_ust_type_sequence, parent);
}
static inline
-struct lttng_ust_type_struct *lttng_ust_get_type_struct(struct lttng_ust_type_common *type)
+const struct lttng_ust_type_struct *lttng_ust_get_type_struct(const struct lttng_ust_type_common *type)
{
if (type->type != lttng_ust_type_struct)
return NULL;
- return caa_container_of(type, struct lttng_ust_type_struct, parent);
+ return caa_container_of(type, const struct lttng_ust_type_struct, parent);
}
-/* Create dynamically allocated types. */
-static inline
-struct lttng_ust_type_common *lttng_ust_create_type_integer(unsigned int size,
- unsigned short alignment, bool signedness, unsigned int byte_order,
- unsigned int base)
-{
- struct lttng_ust_type_integer *integer_type;
-
- integer_type = zmalloc(sizeof(struct lttng_ust_type_integer));
- if (!integer_type)
- return NULL;
- integer_type->parent.type = lttng_ust_type_integer;
- integer_type->struct_size = sizeof(struct lttng_ust_type_integer);
- integer_type->size = size;
- integer_type->alignment = alignment;
- integer_type->signedness = signedness;
- integer_type->reverse_byte_order = byte_order != BYTE_ORDER;
- integer_type->base = base;
- return (struct lttng_ust_type_common *) integer_type;
-}
-
-static inline
-struct lttng_ust_type_common *lttng_ust_create_type_array_text(unsigned int length)
-{
- struct lttng_ust_type_array *array_type;
-
- array_type = zmalloc(sizeof(struct lttng_ust_type_array));
- if (!array_type)
- return NULL;
- array_type->parent.type = lttng_ust_type_array;
- array_type->struct_size = sizeof(struct lttng_ust_type_array);
- array_type->length = length;
- array_type->alignment = 0;
- array_type->encoding = lttng_ust_string_encoding_UTF8;
- array_type->elem_type = lttng_ust_create_type_integer(sizeof(char) * CHAR_BIT,
- lttng_ust_rb_alignof(char) * CHAR_BIT, lttng_ust_is_signed_type(char),
- BYTE_ORDER, 10);
- if (!array_type->elem_type)
- goto error_elem;
- return (struct lttng_ust_type_common *) array_type;
-
-error_elem:
- free(array_type);
- return NULL;
-}
-
-/*
- * Destroy dynamically allocated types, including nested types.
- * For enumerations, it does not free the enumeration mapping description.
- */
-static inline
-void lttng_ust_destroy_type(struct lttng_ust_type_common *type)
-{
- if (!type)
- return;
-
- switch (type->type) {
- case lttng_ust_type_integer:
- case lttng_ust_type_string:
- case lttng_ust_type_float:
- case lttng_ust_type_dynamic:
- free(type);
- break;
- case lttng_ust_type_enum:
- {
- struct lttng_ust_type_enum *enum_type = (struct lttng_ust_type_enum *) type;
-
- lttng_ust_destroy_type(enum_type->container_type);
- free(enum_type);
- break;
- }
- case lttng_ust_type_array:
- {
- struct lttng_ust_type_array *array_type = (struct lttng_ust_type_array *) type;
-
- lttng_ust_destroy_type(array_type->elem_type);
- free(array_type);
- break;
- }
- case lttng_ust_type_sequence:
- {
- struct lttng_ust_type_sequence *sequence_type = (struct lttng_ust_type_sequence *) type;
-
- lttng_ust_destroy_type(sequence_type->elem_type);
- free(sequence_type);
- break;
- }
- case lttng_ust_type_struct:
- {
- struct lttng_ust_type_struct *struct_type = (struct lttng_ust_type_struct *) type;
- unsigned int i;
-
- for (i = 0; i < struct_type->nr_fields; i++)
- lttng_ust_destroy_type(struct_type->fields[i]->type);
- free(struct_type);
- break;
- }
- default:
- abort();
- }
-}
+#define lttng_ust_static_type_integer(_size, _alignment, _signedness, _byte_order, _base) \
+ ((const struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_type_integer, { \
+ .parent = { \
+ .type = lttng_ust_type_integer, \
+ }, \
+ .struct_size = sizeof(struct lttng_ust_type_integer), \
+ .size = (_size), \
+ .alignment = (_alignment), \
+ .signedness = (_signedness), \
+ .reverse_byte_order = (_byte_order) != BYTE_ORDER, \
+ .base = (_base), \
+ }))
+
+#define lttng_ust_static_type_array_text(_length) \
+ ((const struct lttng_ust_type_common *) __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_type_array, { \
+ .parent = { \
+ .type = lttng_ust_type_array, \
+ }, \
+ .struct_size = sizeof(struct lttng_ust_type_array), \
+ .length = (_length), \
+ .alignment = 0, \
+ .encoding = lttng_ust_string_encoding_UTF8, \
+ .elem_type = lttng_ust_static_type_integer(sizeof(char) * CHAR_BIT, \
+ lttng_ust_rb_alignof(char) * CHAR_BIT, lttng_ust_is_signed_type(char), \
+ BYTE_ORDER, 10), \
+ }))
+
+#define lttng_ust_static_event_field(_name, _type, _nowrite, _nofilter) \
+ __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_event_field, { \
+ .struct_size = sizeof(struct lttng_ust_event_field), \
+ .name = (_name), \
+ .type = (_type), \
+ .nowrite = (_nowrite), \
+ .nofilter = (_nofilter), \
+ })
+
+#define lttng_ust_static_ctx_field(_event_field, _get_size, _record, _get_value, _destroy, _priv) \
+ __LTTNG_COMPOUND_LITERAL(const struct lttng_ust_ctx_field, { \
+ .event_field = (_event_field), \
+ .get_size = (_get_size), \
+ .record = (_record), \
+ .get_value = (_get_value), \
+ .destroy = (_destroy), \
+ .priv = (_priv), \
+ })
static inline
struct lttng_enabler *lttng_event_enabler_as_enabler(
* This function goes over all bytecode programs of the enabler (event or
* event_notifier enabler) to ensure each is linked to the provided instance.
*/
-void lttng_enabler_link_bytecode(struct lttng_ust_event_desc *event_desc,
+void lttng_enabler_link_bytecode(const struct lttng_ust_event_desc *event_desc,
struct lttng_ust_ctx **ctx,
struct cds_list_head *instance_bytecode_runtime_head,
struct cds_list_head *enabler_bytecode_runtime_head)
/* This is ABI between liblttng-ust and liblttng-ust-dl */
void lttng_ust_dl_update(void *ip);
-void lttng_probe_provider_unregister_events(struct lttng_ust_probe_desc *desc)
+void lttng_probe_provider_unregister_events(const struct lttng_ust_probe_desc *desc)
__attribute__((visibility("hidden")));
int lttng_fix_pending_events(void)
__attribute__((visibility("hidden")));
struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_ust_session *session,
- struct lttng_ust_enum_desc *enum_desc)
+ const struct lttng_ust_enum_desc *enum_desc)
__attribute__((visibility("hidden")));
int lttng_abi_create_root_handle(void)
char *name)
__attribute__((visibility("hidden")));
+int lttng_ust_add_app_context_to_ctx_rcu(const char *name, struct lttng_ust_ctx **ctx)
+ __attribute__((visibility("hidden")));
+
+int lttng_ust_context_set_provider_rcu(struct lttng_ust_ctx **_ctx,
+ const char *name,
+ size_t (*get_size)(void *priv, size_t offset),
+ void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx,
+ struct lttng_ust_channel_buffer *chan),
+ void (*get_value)(void *priv, struct lttng_ust_ctx_value *value),
+ void *priv)
+ __attribute__((visibility("hidden")));
+
+void lttng_ust_context_set_session_provider(const char *name,
+ size_t (*get_size)(void *priv, size_t offset),
+ void (*record)(void *priv, struct lttng_ust_lib_ring_buffer_ctx *ctx,
+ struct lttng_ust_channel_buffer *chan),
+ void (*get_value)(void *priv, struct lttng_ust_ctx_value *value),
+ void *priv)
+ __attribute__((visibility("hidden")));
+
#endif /* _LTTNG_UST_EVENTS_INTERNAL_H */
projects / lttng-ust.git / blobdiff