Files
pezkuwi-subxt/substrate/primitives/tracing
Koute 3d5f093ddb Speed up logging once again (#9981)
* Update `tracing`-related dependencies

* Enable `parking_lot` feature in `tracing-subscriber`

* Add an asynchronous stderr logger

* Make clippy happy

* Add an integration test for the logger

* Refactor `test_logger_filters`'s subprocess machinery into a separate function

* Use a child process instead of hooking into stderr for the test

* Add a doc comment for `MakeStderrWriter`

* Move the initialization into the `MakeStderrWriter`'s constructor

* Add an extra test case to trigger the logger's emergency flush mechanism

* Use the buffer's mutex for asynchronous flushes

* Remove vestigial `nix` dependency from one of the previous commits
2021-10-21 16:54:15 +00:00
..
2021-10-21 16:54:15 +00:00

Substrate tracing primitives and macros.

To trace functions or individual code in Substrate, this crate provides [within_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.

License: Apache-2.0