#include <opentracing-c/config.h>
#include <opentracing-c/destructible.h>
#include <opentracing-c/value.h>

Include dependency graph for span.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	opentracing_span_context
	Span context interface. More...

struct	opentracing_log_field
	Log field to represent key-value pair for a log. More...

struct	opentracing_log_record
	Log record can be used to describe events that occur in the lifetime of a span. More...

struct	opentracing_span_reference

struct	opentracing_finish_span_options

struct	opentracing_span
	Span interface. More...

Macros
#define	OPENTRACINGC_CHILD_OF(span_context)

#define	OPENTRACINGC_FOLLOWS_FROM(span_context)

Typedefs
typedef struct opentracing_span_context	opentracing_span_context
	Span context interface. More...

typedef struct opentracing_log_field	opentracing_log_field
	Log field to represent key-value pair for a log.

typedef struct opentracing_log_record	opentracing_log_record
	Log record can be used to describe events that occur in the lifetime of a span.

typedef enum opentracing_span_reference_type	opentracing_span_reference_type

typedef struct opentracing_span_reference	opentracing_span_reference

typedef struct opentracing_finish_span_options	opentracing_finish_span_options

typedef struct opentracing_span	opentracing_span
	Span interface.

Enumerations
enum	opentracing_span_reference_type { opentracing_span_reference_child_of = 1, opentracing_span_reference_follows_from = 2 }

Macro Definition Documentation

◆ OPENTRACINGC_CHILD_OF

#define OPENTRACINGC_CHILD_OF ( span_context )

Value:

{                                                        \
        opentracing_span_reference_child_of, &(span_context) \
    }

◆ OPENTRACINGC_FOLLOWS_FROM

#define OPENTRACINGC_FOLLOWS_FROM ( span_context )

Value:

{                                                            \
        opentracing_span_reference_follows_from, &(span_context) \
    }

Typedef Documentation

◆ opentracing_span_context

typedef struct opentracing_span_context opentracing_span_context

Span context interface.

Span context represents span state that must be propagated to descendant spans and across boundaries (e.g. trace I:D, span ID, baggage).

Enumeration Type Documentation

◆ opentracing_span_reference_type

enum opentracing_span_reference_type

Enumerator

opentracing_span_reference_child_of

Refers to a parent span that caused and somehow depends upon the new child span.

Often (but not always), the parent span cannot finish until the child span does.

opentracing_span_reference_follows_from

Refers to a parent span that does not depend in any way on the result of the new child span.

For instance, one might use "follow from" to describe pipeline stages separated by queues, or a fire-and-forget cache insert at the tail end of a web request.

A "follow from" span is part of the same logical trace as the new span: i.e., the new span is somehow caused by the work of its "follow from."

All of the following could be valid timing diagrams for children that "follow from" a parent.

[-Parent Span-]  [-Child Span-]


[-Parent Span--]
 [-Child Span-]


[-Parent Span-]
            [-Child Span-]

See http://opentracing.io/spec/

Data Structures

Macros

Typedefs