* http://www.efficios.com/ctf
*/
+/* For enum bt_property_availability */
+#include <babeltrace/property.h>
+
#include <stdint.h>
#include <stddef.h>
-#include <babeltrace/values.h>
#ifdef __cplusplus
extern "C" {
#endif
-/**
-@defgroup ctfireventclass CTF IR event class
-@ingroup ctfir
-@brief CTF IR event class.
-
-@code
-#include <babeltrace/ctf-ir/event-class.h>
-@endcode
-
-A CTF IR <strong><em>event class</em></strong> is a template that you
-can use to create concrete \link ctfirevent CTF IR events\endlink.
-
-An event class has the following properties, both of which \em must
-be unique amongst all the event classes contained in the same
-\link ctfirstreamclass CTF IR stream class\endlink:
-
-- A \b name.
-- A numeric \b ID.
-
-A CTF IR event class owns two
-\link ctfirfieldtypes field types\endlink:
-
-- An optional <strong>event context</strong> field type, which
- represents the \c event.context CTF scope.
-- A mandatory <strong>event payload</strong> field type, which
- represents the \c event.fields CTF scope.
-
-Both field types \em must be structure field types as of
-Babeltrace \btversion.
-The event payload field type <em>must not</em> be empty.
-
-As a reminder, here's the structure of a CTF packet:
-
-@imgpacketstructure
-
-In the Babeltrace CTF IR system, a \link ctfirtraceclass trace
-class\endlink contains zero or more \link ctfirstreamclass stream
-classes\endlink, and a stream class contains zero or more event classes.
-
-Before you can create an event from an event class with
-bt_ctf_event_create(), you \em must add the prepared event class to a
-stream class by calling bt_ctf_stream_class_add_event_class(). This
-function, when successful, \em freezes the event class, disallowing any
-future modification of its properties and field types by the user.
-
-As with any Babeltrace object, CTF IR event class objects have
-<a href="https://en.wikipedia.org/wiki/Reference_counting">reference
-counts</a>. See \ref refs to learn more about the reference counting
-management of Babeltrace objects.
-
-bt_ctf_stream_class_add_event_class() \em freezes its event class
-parameter on success. You cannot modify a frozen event class: it is
-considered immutable, except for \link refs reference counting\endlink.
-
-@sa ctfirevent
-@sa ctfirstreamclass
-
-@file
-@brief CTF IR event class type and functions.
-@sa ctfireventclass
-
-@addtogroup ctfireventclass
-@{
-*/
-
-/**
-@struct bt_ctf_event_class
-@brief A CTF IR event class.
-@sa ctfireventclass
-*/
-struct bt_ctf_event_class;
-struct bt_ctf_field;
-struct bt_ctf_field_type;
-struct bt_ctf_stream_class;
-
-/**
-@name Creation and parent access functions
-@{
-*/
-
-/**
-@brief Creates a default CTF IR event class named \p name.
-
-The event class is created \em without an event context
-\link ctfirfieldtypes field type\endlink and with an empty event
-payload field type.
-
-Upon creation, the event class's ID is <em>not set</em>. You
-can set it to a specific value with bt_ctf_event_class_set_id(). If it
-is still unset when you call bt_ctf_stream_class_add_event_class(), then
-the stream class assigns a unique ID to this event class before
-freezing it.
-
-@param[in] name Name of the event class to create (copied on success).
-@returns Created event class, or \c NULL on error.
-
-@prenotnull{name}
-@postsuccessrefcountret1
-*/
-extern struct bt_ctf_event_class *bt_ctf_event_class_create(const char *name);
-
-/**
-@brief Returns the parent CTF IR stream class of the CTF IR event
- class \p event_class.
-
-It is possible that the event class was not added to a stream class
-yet, in which case this function returns \c NULL. You can add an
-event class to a stream class with
-bt_ctf_stream_class_add_event_class().
-
-@param[in] event_class Event class of which to get the parent
- stream class.
-@returns Parent stream class of \p event_class,
- or \c NULL if \p event_class was not
- added to a stream class yet or on error.
-
-@prenotnull{event_class}
-@postrefcountsame{event_class}
-@postsuccessrefcountretinc
-
-@sa bt_ctf_stream_class_add_event_class(): Add an event class to
- a stream class.
-*/
-extern struct bt_ctf_stream_class *bt_ctf_event_class_get_stream_class(
- struct bt_ctf_event_class *event_class);
-
-/** @} */
-
-/**
-@name Attribute functions
-@{
-*/
-
-/**
-@brief Returns the name of the CTF IR event class \p event_class.
-
-On success, \p event_class remains the sole owner of the returned
-string.
-
-@param[in] event_class Event class of which to get the name.
-@returns Name of event class \p event_class, or
- \c NULL on error.
-
-@prenotnull{event_class}
-@postrefcountsame{event_class}
-*/
-extern const char *bt_ctf_event_class_get_name(
- struct bt_ctf_event_class *event_class);
-
-/**
-@brief Returns the numeric ID of the CTF IR event class \p event_class.
-
-@param[in] event_class Event class of which to get the numeric ID.
-@returns ID of event class \p event_class, or a
- negative value on error.
-
-@prenotnull{event_class}
-@postrefcountsame{event_class}
-
-@sa bt_ctf_event_class_set_id(): Sets the numeric ID of a given
- event class.
-*/
-extern int64_t bt_ctf_event_class_get_id(
- struct bt_ctf_event_class *event_class);
-
-/**
-@brief Sets the numeric ID of the CTF IR event class
- \p event_class to \p id.
-
-\p id must be unique amongst the IDs of all the event classes
-of the stream class to which you eventually add \p event_class.
-
-@param[in] event_class Event class of which to set the numeric ID.
-@param[in] id ID of the event class.
-@returns 0 on success, or a negative value on error.
-
-@prenotnull{event_class}
-@prehot{event_class}
-@postrefcountsame{event_class}
-
-@sa bt_ctf_event_class_get_id(): Returns the numeric ID of a given
- event class.
-*/
-extern int bt_ctf_event_class_set_id(
- struct bt_ctf_event_class *event_class, uint32_t id);
-
-/**
-@brief Returns the number of attributes contained in the CTF IR event
- class \p event_class.
-
-@param[in] event_class Event class of which to get the number
- of contained attributes.
-@returns Number of contained attributes in
- \p event_class, or a negative value on error.
-
-@prenotnull{event_class}
-@postrefcountsame{event_class}
-
-@sa bt_ctf_event_class_get_attribute_name(): Returns the name of
- the attribute of a given event class at a given index.
-@sa bt_ctf_event_class_get_attribute_value(): Returns the value of
- the attribute of a given event class at a given index.
-*/
-extern int64_t bt_ctf_event_class_get_attribute_count(
- struct bt_ctf_event_class *event_class);
-
-/**
-@brief Returns the name of the attribute at the index \p index of the
- CTF IR event class \p event_class.
-
-On success, \p event_class remains the sole owner of the returned
-string.
-
-@param[in] event_class Event class of which to get the name
- of an attribute.
-@param[in] index Index of the attribute of which to get the name.
-@returns Attribute name, or \c NULL on error.
-
-@prenotnull{event_class}
-@pre \p index is lesser than the number of attributes contained by
- \p event_class.
-@postrefcountsame{event_class}
-
-@sa bt_ctf_event_class_get_attribute_value(): Returns the value of
- the attribute of a given event class at a given index.
-*/
-extern const char *
-bt_ctf_event_class_get_attribute_name(
- struct bt_ctf_event_class *event_class, int index);
-
-/**
-@brief Returns the value of the attribute at the index \p index of the
- CTF IR event class \p event_class.
-
-@param[in] event_class Event class of which to get the value
- of an attribute.
-@param[in] index Index of the attribute of which to get the value.
-@returns Attribute value, or \c NULL on error.
-
-@prenotnull{event_class}
-@pre \p index is lesser than the number of attributes contained by
- \p event_class.
-@postsuccessrefcountretinc
-@postrefcountsame{event_class}
-
-@sa bt_ctf_event_class_get_attribute_name(): Returns the name of
- the attribute of a given event class at a given index.
-*/
-extern struct bt_value *
-bt_ctf_event_class_get_attribute_value(struct bt_ctf_event_class *event_class,
- int index);
-
-/**
-@brief Returns the value of the attribute named \p name of the CTF IR
- event class \p event_class.
-
-On success, the reference count of the returned value object is
-incremented.
-
-@param[in] event_class Event class of which to get the value
- of an attribute.
-@param[in] name Name of the attribute to get.
-@returns Attribute value, or \c NULL on error.
-
-@prenotnull{event_class}
-@prenotnull{name}
-@postsuccessrefcountretinc
-@postrefcountsame{event_class}
-*/
-extern struct bt_value *
-bt_ctf_event_class_get_attribute_value_by_name(
- struct bt_ctf_event_class *event_class, const char *name);
-
-/**
-@brief Sets the attribute named \p name of the CTF IR event class
- \p event_class to the value \p value.
-
-Valid attributes, as of Babeltrace \btversion, are:
-
-- <code>id</code>: \em must be an integer value object with a raw value
- that is greater than or equal to 0. This represents the event class's
- numeric ID and you can also set it with bt_ctf_event_class_set_id().
-
-- <code>name</code>: must be a string value object. This represents
- the name of the event class.
-
-- <code>loglevel</code>: must be an integer value object with a raw
- value greater than or equal to 0. This represents the numeric log level
- associated with this event class. Log level values
- are application-specific.
-
-- <code>model.emf.uri</code>: must be a string value object. This
- represents the application-specific Eclipse Modeling Framework URI
- of the event class.
-
-@param[in] event_class Event class of which to set an
- attribute.
-@param[in] name Attribute name (copied on success).
-@param[in] value Attribute value.
-@returns 0 on success, or a negative value on error.
-
-@prenotnull{event_class}
-@prenotnull{name}
-@prenotnull{value}
-@prehot{event_class}
-@postrefcountsame{event_class}
-@postsuccessrefcountinc{value}
-
-@sa bt_ctf_event_class_get_attribute_value_by_name(): Returns the
- attribute of a given event class having a given name.
-*/
-extern int bt_ctf_event_class_set_attribute(
- struct bt_ctf_event_class *event_class, const char *name,
- struct bt_value *value);
-
-/** @} */
-
-/**
-@name Contained field types functions
-@{
-*/
-
-/**
-@brief Returns the context field type of the CTF IR event class
- \p event_class.
-
-@param[in] event_class Event class of which to get the context field type.
-@returns Context field type of \p event_class, or \c NULL if
- \p event_class has no context field type or on error.
-
-@prenotnull{event_class}
-@postrefcountsame{event_class}
-@post <strong>On success, if the return value is a field type</strong>, its
- reference count is incremented.
-
-@sa bt_ctf_event_class_set_context_type(): Sets the context field type of a
- given event class.
-*/
-extern struct bt_ctf_field_type *bt_ctf_event_class_get_context_type(
- struct bt_ctf_event_class *event_class);
-
-/**
-@brief Sets the context field type of the CTF IR event class \p event_class to
- \p context_type, or unsets the current context field type from
- \p event_class.
-
-If \p context_type is \c NULL, then this function unsets the current context
-field type from \p event_class, effectively making \p event_class an event class
-without a context field type.
-
-As of Babeltrace \btversion, if \p context_type is not \c NULL,
-\p context_type \em must be a CTF IR structure field type object.
-
-@param[in] event_class Event class of which to set the context field
- type.
-@param[in] context_type Context field type, or \c NULL to unset the
- current context field type.
-@returns 0 on success, or a negative value on error.
-
-@prenotnull{event_class}
-@prehot{event_class}
-@pre <strong>If \p context_type is not \c NULL</strong>, \p context_type is a
- CTF IR structure field type.
-@postrefcountsame{event_class}
-@post <strong>On success, if \p context_type is not \c NULL</strong>,
- the reference count of \p context_type is incremented.
-
-@sa bt_ctf_event_class_get_context_type(): Returns the context field type of a
- given event class.
-*/
-extern int bt_ctf_event_class_set_context_type(
- struct bt_ctf_event_class *event_class,
- struct bt_ctf_field_type *context_type);
-
-/**
-@brief Returns the payload field type of the CTF IR event class
- \p event_class.
-
-@param[in] event_class Event class of which to get the payload field type.
-@returns Payload field type of \p event_class, or \c NULL if
- \p event_class has no payload field type or on error.
-
-@prenotnull{event_class}
-@postrefcountsame{event_class}
-@post <strong>On success, if the return value is a field type</strong>, its
- reference count is incremented.
-
-@sa bt_ctf_event_class_set_payload_type(): Sets the payload field type of a
- given event class.
-*/
-extern struct bt_ctf_field_type *bt_ctf_event_class_get_payload_type(
- struct bt_ctf_event_class *event_class);
-
-/**
-@brief Sets the payload field type of the CTF IR event class \p event_class to
- \p payload_type, or unsets the current payload field type from
- \p event_class.
-
-If \p payload_type is \c NULL, then this function unsets the current payload
-field type from \p event_class, effectively making \p event_class an event class
-without a payload field type.
-
-As of Babeltrace \btversion, if \p payload_type is not \c NULL,
-\p payload_type \em must be a CTF IR structure field type object.
-
-@param[in] event_class Event class of which to set the payload field
- type.
-@param[in] payload_type Payload field type, or \c NULL to unset the
- current payload field type.
-@returns 0 on success, or a negative value on error.
-
-@prenotnull{event_class}
-@prehot{event_class}
-@pre <strong>If \p payload_type is not \c NULL</strong>, \p payload_type is a
- CTF IR structure field type.
-@postrefcountsame{event_class}
-@post <strong>On success, if \p payload_type is not \c NULL</strong>,
- the reference count of \p payload_type is incremented.
-
-@sa bt_ctf_event_class_get_payload_type(): Returns the payload field type of a
- given event class.
-*/
-extern int bt_ctf_event_class_set_payload_type(
- struct bt_ctf_event_class *event_class,
- struct bt_ctf_field_type *payload_type);
-
-/**
-@brief Returns the number of fields contained in the
- payload field type of the CTF IR event class \p event_class.
-
-@remarks
-Calling this function is the equivalent of getting the payload field
-type of \p event_class with bt_ctf_event_class_get_payload_type() and
-getting its field count with
-bt_ctf_field_type_structure_get_field_count().
-
-@param[in] event_class Event class of which to get the number
- of fields contained in its payload field type.
-@returns Number of fields in the payload field type
- of \p event_class, or a negative value on error.
-
-@prenotnull{event_class}
-@postrefcountsame{event_class}
-*/
-extern int64_t bt_ctf_event_class_get_field_count(
- struct bt_ctf_event_class *event_class);
-
-/**
-@brief Returns the type and the name of the field at index \p index
- in the payload field type of the CTF IR event class
- \p event_class.
-
-On success, the field's type is placed in \p *field_type if
-\p field_type is not \c NULL. The field's name is placed in
-\p *name if \p name is not \c NULL. \p event_class remains the sole
-owner of \p *name.
-
-Both \p name and \p field_type can be \c NULL if the caller is not
-interested in one of them.
-
-@remarks
-Calling this function is the equivalent of getting the payload field
-type of \p event_class with bt_ctf_event_class_get_payload_type() and
-getting the type and name of one of its field with
-bt_ctf_field_type_structure_get_field().
-
-@param[in] event_class Event class of which to get the type and name
- of a field in its payload field type.
-@param[out] field_name Name of the field at the index
- \p index in the payload field type of
- \p event_class (can be \c NULL).
-@param[out] field_type Type of the field at the index \p index in the
- payload field type of \p event_class
- (can be \c NULL).
-@param[in] index Index of the payload field type's field to find.
-@returns 0 on success, or a negative value on error.
-
-@prenotnull{event_class}
-@pre \p index is lesser than the number of fields contained in the
- payload field type of \p event_class (see
- bt_ctf_event_class_get_field_count()).
-@postrefcountsame{event_class}
-@post <strong>On success, if \p field_type is not \c NULL</strong>, the
- reference count of \p *field_type is incremented.
-*/
-extern int bt_ctf_event_class_get_field(struct bt_ctf_event_class *event_class,
- const char **field_name, struct bt_ctf_field_type **field_type,
- int index);
-
-/**
-@brief Returns the type of the field named \p name in the payload
- field type of the CTF IR event class \p event_class.
+struct bt_event_class;
+struct bt_field_type;
+struct bt_stream_class;
+
+enum bt_event_class_log_level {
+ BT_EVENT_CLASS_LOG_LEVEL_EMERGENCY,
+ BT_EVENT_CLASS_LOG_LEVEL_ALERT,
+ BT_EVENT_CLASS_LOG_LEVEL_CRITICAL,
+ BT_EVENT_CLASS_LOG_LEVEL_ERROR,
+ BT_EVENT_CLASS_LOG_LEVEL_WARNING,
+ BT_EVENT_CLASS_LOG_LEVEL_NOTICE,
+ BT_EVENT_CLASS_LOG_LEVEL_INFO,
+ BT_EVENT_CLASS_LOG_LEVEL_DEBUG_SYSTEM,
+ BT_EVENT_CLASS_LOG_LEVEL_DEBUG_PROGRAM,
+ BT_EVENT_CLASS_LOG_LEVEL_DEBUG_PROCESS,
+ BT_EVENT_CLASS_LOG_LEVEL_DEBUG_MODULE,
+ BT_EVENT_CLASS_LOG_LEVEL_DEBUG_UNIT,
+ BT_EVENT_CLASS_LOG_LEVEL_DEBUG_FUNCTION,
+ BT_EVENT_CLASS_LOG_LEVEL_DEBUG_LINE,
+ BT_EVENT_CLASS_LOG_LEVEL_DEBUG,
+};
+
+extern struct bt_event_class *bt_event_class_create(
+ struct bt_stream_class *stream_class);
+
+extern struct bt_event_class *bt_event_class_create_with_id(
+ struct bt_stream_class *stream_class, uint64_t id);
+
+extern struct bt_stream_class *bt_event_class_borrow_stream_class(
+ struct bt_event_class *event_class);
+
+extern const char *bt_event_class_get_name(struct bt_event_class *event_class);
+
+extern int bt_event_class_set_name(struct bt_event_class *event_class,
+ const char *name);
-@remarks
-Calling this function is the equivalent of getting the payload field
-type of \p event_class with bt_ctf_event_class_get_payload_type() and
-getting the type of one of its field with
-bt_ctf_field_type_structure_get_field_type_by_name().
+extern uint64_t bt_event_class_get_id(struct bt_event_class *event_class);
-@param[in] event_class Event class of which to get the type of a
- payload field type's field.
-@param[in] name Name of the payload field type's field to get.
-@returns Type of the field named \p name in the payload
- field type of \p event_class, or \c NULL if
- the function cannot find the field or
- on error.
+extern enum bt_property_availability bt_event_class_get_log_level(
+ struct bt_event_class *event_class,
+ enum bt_event_class_log_level *log_level);
-@prenotnull{event_class}
-@prenotnull{name}
-@postrefcountsame{event_class}
-@postsuccessrefcountretinc
-*/
-extern struct bt_ctf_field_type *bt_ctf_event_class_get_field_by_name(
- struct bt_ctf_event_class *event_class, const char *name);
+extern int bt_event_class_set_log_level(struct bt_event_class *event_class,
+ enum bt_event_class_log_level log_level);
-/**
-@brief Adds a field named \p name with the type \p field_type to the
- payload field type of the CTF IR event class \p event_class.
+extern const char *bt_event_class_get_emf_uri(
+ struct bt_event_class *event_class);
-@remarks
-Calling this function is the equivalent of getting the payload field
-type of \p event_class with bt_ctf_event_class_get_payload_type() and
-adding a field to it with bt_ctf_field_type_structure_add_field().
+extern int bt_event_class_set_emf_uri(struct bt_event_class *event_class,
+ const char *emf_uri);
-@param[in] event_class Event class containing the payload field
- type in which to add a field.
-@param[in] field_type Type of the field to add.
-@param[in] name Name of the field to add (copied on
- success).
-@returns 0 on success, or a negative value on error.
+extern struct bt_field_type *bt_event_class_borrow_specific_context_field_type(
+ struct bt_event_class *event_class);
-@prenotnull{event_class}
-@prenotnull{type}
-@prenotnull{name}
-@prehot{event_class}
-@postrefcountsame{event_class}
-@postsuccessrefcountinc{field_type}
-*/
-extern int bt_ctf_event_class_add_field(struct bt_ctf_event_class *event_class,
- struct bt_ctf_field_type *field_type,
- const char *name);
+extern int bt_event_class_set_specific_context_field_type(
+ struct bt_event_class *event_class,
+ struct bt_field_type *field_type);
-/** @} */
+extern struct bt_field_type *bt_event_class_borrow_payload_field_type(
+ struct bt_event_class *event_class);
-/** @} */
+extern int bt_event_class_set_payload_field_type(
+ struct bt_event_class *event_class,
+ struct bt_field_type *field_type);
#ifdef __cplusplus
}
projects / babeltrace.git / blobdiff