fuchsia.diagnostics.streaming

STRUCTS

A record in the diagnostic stream.

Name	Type	Description	Default
`timestamp`	`zx/time`	The monotonic time at which the record was generated.	No default
`arguments`	`vector<Argument>[15]`	The key-value pairs which make up this record.	No default

A named key-value pair in the diagnostic record.

Name	Type	Description	Default
`name`	`string[256]`	The name of the argument.	No default
`value`	`Value`	The value of the argument.	No default

An argument value which can be one of several types.

Name	Type	Description
`signed`	`int64`	A signed integral argument.
`unsigned`	`uint64`	An unsigned integral argument.
`floating`	`float64`	A double-precision floating-point argument.
`text`	`string[32768]`	A UTF8 text argument.

Name Value Type Description

Name	Value	Type	Description
MAX_ARGS	`15`	`uint32`	Maximum number of arguments that can be encoded per record, as specified by the tracing format: https://fuchsia.dev/fuchsia-src/development/tracing/trace-format#arguments
MAX_ARG_NAME_LENGTH	`256`	`uint32`	A small(ish) limit on the length of argument names is used because argument names are expected to be used repeatedly, many times.
MAX_TEXT_ARG_LENGTH	`32768`	`uint32`	The maximum string length which we can encode into the tracing format.

15

uint32

Maximum number of arguments that can be encoded per record, as specified by the tracing format:

https://fuchsia.dev/fuchsia-src/development/tracing/trace-format#arguments

256

uint32

A small(ish) limit on the length of argument names is used because argument names are expected to be used repeatedly, many times.

32768

uint32

The maximum string length which we can encode into the tracing format.