[−][src]Crate sp_tracing
Substrate tracing primitives and macros.
To trace functions or invidual code in Substrate, this crate provides tracing_span
and enter_span. See the individual docs for how to use these macros.
Note that to allow traces from wasm execution environment there are
2 reserved identifiers for tracing Field recording, stored in the consts:
WASM_TARGET_KEY and WASM_NAME_KEY - if you choose to record fields, you
must ensure that your identifiers do not clash with either of these.
Additionally, we have a const: WASM_TRACE_IDENTIFIER, which holds a span name used
to signal that the 'actual' span name and target should be retrieved instead from
the associated Fields mentioned above.
Modules
| proxy | Proxy to allow entering tracing spans from wasm. |
Macros
| enter_span | Enter a span. |
| if_tracing | Generates the given code if the tracing dependency is enabled. |
| tracing_span | Runs given code within a tracing span, measuring it's execution time. |
Functions
| set_wasm_tracing | |
| wasm_tracing_enabled |