1 files changed, 55 insertions, 0 deletions
diff --git a/vendor/measureme/src/lib.rs b/vendor/measureme/src/lib.rs
new file mode 100644
index 000000000..f0566c4ba
--- /dev/null
+++ b/vendor/measureme/src/lib.rs
@@ -0,0 +1,55 @@
+//! This crate provides a library for high-performance event tracing which is used by
+//! the Rust compiler's unstable `-Z self-profile` feature.
+//!
+//! The output of a tracing session will be an `.mm_profdata` file containing a stream
+//! of events and a string table that allows to decode the `StringId`s in the event stream.
+//!
+//! # Writing event trace files
+//!
+//! The main entry point for writing event trace files is the [`Profiler`] struct.
+//!
+//! To create a [`Profiler`], call the [`Profiler::new()`] function and provide a `Path` with
+//! the directory and file name for the trace files.
+//! Alternatively, call the [`Profiler::with_counter()`] function, to choose the [`Counter`]
+//! the profiler will use for events (whereas [`Profiler::new()`] defaults to `wall-time`).
+//!
+//! For more information on available counters, see the [`counters`] module documentation.
+//!
+//! To record an event, call the [`Profiler::record_instant_event()`] method, passing a few
+//! arguments:
+//!   - `event_kind`: a [`StringId`] which assigns an arbitrary category to the event
+//!   - `event_id`: a [`StringId`] which specifies the name of the event
+//!   - `thread_id`: a `u32` id of the thread which is recording this event
+//!
+//! Alternatively, events can also be recorded via the
+//! [`Profiler::start_recording_interval_event()`] method. This method records a "start" event and
+//! returns a `TimingGuard` object that will automatically record the corresponding "end" event
+//! when it is dropped.
+//!
+//! To create a [`StringId`], call one of the string allocation methods:
+//!   - [`Profiler::alloc_string()`]: allocates a string and returns the [`StringId`] that refers
+//!     to it
+//!
+//! [`Counter`]: counters::Counter
+#![deny(warnings)]
+
+#[macro_use]
+extern crate log;
+
+pub mod counters;
+pub mod event_id;
+pub mod file_header;
+mod profiler;
+mod raw_event;
+mod serialization;
+pub mod stringtable;
+
+pub mod rustc;
+
+pub use crate::event_id::{EventId, EventIdBuilder};
+pub use crate::profiler::{DetachedTiming, Profiler, TimingGuard};
+pub use crate::raw_event::{RawEvent, MAX_INTERVAL_VALUE, MAX_SINGLE_VALUE};
+pub use crate::serialization::{
+    split_streams, Addr, PageTag, SerializationSink, SerializationSinkBuilder,
+};
+pub use crate::stringtable::{SerializableString, StringComponent, StringId, StringTableBuilder};