X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=include%2Fbabeltrace%2Fctf%2Fevents.h;h=68ec9a6e621d57adeaf8641134ca54175cfa5e3d;hb=56e18c4ce186892c36d7f2cb5078087425e60134;hp=c08314f8775bbb6d0418b9f7011ccc0c30fb04f1;hpb=da320b838f4deeaae4314c18c507ca486243b0fe;p=babeltrace.git diff --git a/include/babeltrace/ctf/events.h b/include/babeltrace/ctf/events.h index c08314f8..68ec9a6e 100644 --- a/include/babeltrace/ctf/events.h +++ b/include/babeltrace/ctf/events.h @@ -1,187 +1,7 @@ -#ifndef _BABELTRACE_CTF_EVENTS_H -#define _BABELTRACE_CTF_EVENTS_H - -/* - * BabelTrace - * - * CTF events API - * - * Copyright 2011-2012 EfficiOS Inc. and Linux Foundation - * - * Author: Mathieu Desnoyers - * Julien Desfossez - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sublicense, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - */ - -#include -#include - -struct ctf_stream; -struct ctf_stream_event; -struct definition; -struct bt_ctf_iter; - -/* - * the top-level scopes in CTF - */ -enum bt_ctf_scope { - BT_TRACE_PACKET_HEADER = 0, - BT_STREAM_PACKET_CONTEXT = 1, - BT_STREAM_EVENT_HEADER = 2, - BT_STREAM_EVENT_CONTEXT = 3, - BT_EVENT_CONTEXT = 4, - BT_EVENT_FIELDS = 5, -}; - -/* - * the supported CTF types - */ -enum ctf_type_id { - CTF_TYPE_UNKNOWN = 0, - CTF_TYPE_INTEGER, - CTF_TYPE_FLOAT, - CTF_TYPE_ENUM, - CTF_TYPE_STRING, - CTF_TYPE_STRUCT, - CTF_TYPE_UNTAGGED_VARIANT, - CTF_TYPE_VARIANT, - CTF_TYPE_ARRAY, - CTF_TYPE_SEQUENCE, - NR_CTF_TYPES, -}; - -/* - * the structure to manipulate events - */ -struct bt_ctf_event { - struct ctf_stream *stream; - struct ctf_stream_event *event; -}; - -/* - * bt_ctf_iter_read_event: Read the iterator's current event data. - * - * @iter: trace collection iterator (input) - * @stream: stream containing event at current position (output) - * @event: current event (output) - * Return 0 on success, negative error value on error. - */ -struct bt_ctf_event *bt_ctf_iter_read_event(struct bt_ctf_iter *iter); - -/* - * bt_ctf_iter_create - Allocate a CTF trace collection iterator. - * - * begin_pos and end_pos are optional parameters to specify the position - * at which the trace collection should be seeked upon iterator - * creation, and the position at which iteration will start returning - * "EOF". - * - * By default, if begin_pos is NULL, a BT_SEEK_CUR is performed at - * creation. By default, if end_pos is NULL, a BT_SEEK_END (end of - * trace) is the EOF criterion. - */ -struct bt_ctf_iter *bt_ctf_iter_create(struct bt_context *ctx, - struct bt_iter_pos *begin_pos, - struct bt_iter_pos *end_pos); - -/* - * bt_ctf_get_iter - get iterator from ctf iterator. - */ -struct bt_iter *bt_ctf_get_iter(struct bt_ctf_iter *iter); - -/* - * bt_ctf_iter_destroy - Free a CTF trace collection iterator. - */ -void bt_ctf_iter_destroy(struct bt_ctf_iter *iter); - -/* - * bt_ctf_get_top_level_scope: return a definition of the top-level scope - * - * Top-level scopes are defined in the bt_ctf_scope enum. - * In order to get a field or a field list, the user needs to pass a - * scope as argument, this scope can be a top-level scope or a scope - * relative to an arbitrary field. This function provides the mapping - * between the enum and the actual definition of top-level scopes. - * On error return NULL. - */ -struct definition *bt_ctf_get_top_level_scope(struct bt_ctf_event *event, - enum bt_ctf_scope scope); - -/* - * bt_ctf_event_get_name: returns the name of the event or NULL on error - */ -const char *bt_ctf_event_name(struct bt_ctf_event *event); - -/* - * bt_ctf_get_timestamp: returns the timestamp of the event or -1ULL on error - */ -uint64_t bt_ctf_get_timestamp(struct bt_ctf_event *event); - -/* - * bt_ctf_get_field_list: set list pointer to an array of definition - * pointers and set count to the number of elements in the array. - * Return 0 on success and a negative value on error. - */ -int bt_ctf_get_field_list(struct bt_ctf_event *event, - struct definition *scope, - struct definition const * const **list, - unsigned int *count); - -/* - * bt_ctf_get_field: returns the definition of a specific field - */ -struct definition *bt_ctf_get_field(struct bt_ctf_event *event, - struct definition *scope, - const char *field); - -/* - * bt_ctf_get_index: if the field is an array or a sequence, return the element - * at position index, otherwise return NULL; - */ -struct definition *bt_ctf_get_index(struct bt_ctf_event *event, - struct definition *field, - unsigned int index); - -/* - * bt_ctf_field_name: returns the name of a field or NULL on error - */ -const char *bt_ctf_field_name(const struct definition *def); - -/* - * bt_ctf_field_type: returns the type of a field or -1 if unknown - */ -enum ctf_type_id bt_ctf_field_type(const struct definition *def); - -/* - * Field access functions - * - * These functions return the value associated with the field passed in - * parameter. - * - * If the field does not exist or is not of the type requested, the value - * returned is undefined. To check if an error occured, use the - * bt_ctf_field_error() function after accessing a field. - */ -uint64_t bt_ctf_get_uint64(const struct definition *field); -int64_t bt_ctf_get_int64(const struct definition *field); -char *bt_ctf_get_char_array(const struct definition *field); -char *bt_ctf_get_string(const struct definition *field); - -/* - * bt_ctf_field_error: returns the last error code encountered while - * accessing a field and reset the error flag. - * Return 0 if no error, a negative value otherwise. - */ -int bt_ctf_field_get_error(void); - -#endif /* _BABELTRACE_CTF_EVENTS_H */ +/* Pre-2.0 CTF writer backward compatibility */ +#include +#include +#include +#include +#include +#include