11.0.0: v9 format: Increase StringId and Addr size to u64

Author: smklein

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## [11.0.0] - 2023-12-14
+
+### Changed
+- `measureme`: Update StringId and Addr sizes from u32 to u64 ([GH-216])
+- `analyzeme`: v9 file format, which uses larger events ([GH-216])
+
 ## [10.1.2] - 2023-12-14
 
 ### Changed
@@ -232,3 +238,4 @@
 [GH-208]: https://github.com/rust-lang/measureme/pull/208
 [GH-209]: https://github.com/rust-lang/measureme/pull/209
 [GH-211]: https://github.com/rust-lang/measureme/pull/211
+[GH-216]: https://github.com/rust-lang/measureme/pull/216

analyzeme/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "analyzeme"
-version = "10.1.2"
+version = "11.0.0"
 authors = ["Wesley Wiser <[email protected]>", "Michael Woerister <michaelwoerister@posteo>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"
@@ -14,7 +14,13 @@ serde = { version = "1.0", features = ["derive"] }
 
 # Depending on older versions of this crate allows us to keep supporting older
 # file formats.
+
+# File format: v7
 analyzeme_9_2_0 = { package = "analyzeme", git = "https://github.com/rust-lang/measureme", tag = "9.2.0" }
 
+# File format: v8
+decodeme_10_1_2 = { package = "decodeme", git = "https://github.com/rust-lang/measureme", tag = "10.1.2" }
+measureme_10_1_2 = { package = "measureme", git = "https://github.com/rust-lang/measureme", tag = "10.1.2" }
+
 [dev-dependencies]
 flate2 = "1.0"

analyzeme/src/file_formats/mod.rs

@@ -3,13 +3,14 @@ use std::fmt::Debug;
 
 pub mod v7;
 pub mod v8;
+pub mod v9;
 
-pub use v8 as current;
+pub use v9 as current;
 
 /// The [EventDecoder] knows how to decode events for a specific file format.
 pub trait EventDecoder: Debug + Send + Sync {
     fn num_events(&self) -> usize;
-    fn metadata(&self) -> &Metadata;
+    fn metadata(&self) -> Metadata;
     fn decode_full_event<'a>(&'a self, event_index: usize) -> Event<'a>;
     fn decode_lightweight_event<'a>(&'a self, event_index: usize) -> LightweightEvent;
 }

analyzeme/src/file_formats/v7.rs

@@ -41,8 +41,8 @@ impl super::EventDecoder for EventDecoder {
         self.legacy_profiling_data.num_events()
     }
 
-    fn metadata(&self) -> &Metadata {
-        &self.metadata
+    fn metadata(&self) -> Metadata {
+        self.metadata.clone()
     }
 
     fn decode_full_event(&self, event_index: usize) -> Event<'_> {

analyzeme/src/file_formats/v8.rs

@@ -1,26 +1,84 @@
 //! This module implements file loading for the v8 file format used until
-//! crate version 10.0.0
+//! crate version 10.0.0.
+//!
+//! The difference from v8 to v9 copes with the expansion of StringId and Addr
+//! types from u32 to u64. Most of the EventDecoder interface is actually
+//! unchanged, but the construction of "EventDecoder::new", which parses
+//! the stream of events, varies based on these sizes.
+//!
+//! This file provides conversions to current interfaces, relying on an
+//! old version of this crate to parse the u32-based v8 version.
 
-use crate::{Event, LightweightEvent};
-pub use decodeme::EventDecoder;
+use crate::{Event, EventPayload, LightweightEvent, Timestamp};
 use decodeme::Metadata;
+use decodeme_10_1_2::event_payload::EventPayload as OldEventPayload;
+use decodeme_10_1_2::event_payload::Timestamp as OldTimestamp;
+use decodeme_10_1_2::lightweight_event::LightweightEvent as OldLightweightEvent;
+pub use decodeme_10_1_2::EventDecoder;
+use decodeme_10_1_2::Metadata as OldMetadata;
 
-pub const FILE_FORMAT: u32 = decodeme::CURRENT_FILE_FORMAT_VERSION;
+pub const FILE_FORMAT: u32 = measureme_10_1_2::file_header::CURRENT_FILE_FORMAT_VERSION;
+
+// NOTE: These are functionally a hand-rolled "impl From<Old> -> New", but
+// given orphan rules, it seems undesirable to spread version-specific
+// converters around the codebase.
+//
+// In lieu of an idiomatic type conversion, we at least centralize compatibility
+// with the old "v8" version to this file.
+
+fn v8_metadata_as_current(old: &OldMetadata) -> Metadata {
+    Metadata {
+        start_time: old.start_time,
+        process_id: old.process_id,
+        cmd: old.cmd.clone(),
+    }
+}
+
+fn v8_timestamp_as_current(old: OldTimestamp) -> Timestamp {
+    match old {
+        OldTimestamp::Interval { start, end } => Timestamp::Interval { start, end },
+        OldTimestamp::Instant(t) => Timestamp::Instant(t),
+    }
+}
+
+fn v8_event_payload_as_current(old: OldEventPayload) -> EventPayload {
+    match old {
+        OldEventPayload::Timestamp(t) => EventPayload::Timestamp(v8_timestamp_as_current(t)),
+        OldEventPayload::Integer(t) => EventPayload::Integer(t),
+    }
+}
+
+fn v8_lightweightevent_as_current(old: OldLightweightEvent) -> LightweightEvent {
+    LightweightEvent {
+        event_index: old.event_index,
+        thread_id: old.thread_id,
+        payload: v8_event_payload_as_current(old.payload),
+    }
+}
 
 impl super::EventDecoder for EventDecoder {
     fn num_events(&self) -> usize {
         self.num_events()
     }
 
-    fn metadata(&self) -> &Metadata {
-        self.metadata()
+    fn metadata(&self) -> Metadata {
+        let old = self.metadata();
+        v8_metadata_as_current(&old)
     }
 
     fn decode_full_event(&self, event_index: usize) -> Event<'_> {
-        self.decode_full_event(event_index)
+        let old = self.decode_full_event(event_index);
+
+        Event {
+            event_kind: old.event_kind,
+            label: old.label,
+            additional_data: old.additional_data,
+            payload: v8_event_payload_as_current(old.payload),
+            thread_id: old.thread_id,
+        }
     }
 
     fn decode_lightweight_event(&self, event_index: usize) -> LightweightEvent {
-        self.decode_lightweight_event(event_index)
+        v8_lightweightevent_as_current(self.decode_lightweight_event(event_index))
     }
 }

analyzeme/src/file_formats/v9.rs

@@ -0,0 +1,25 @@
+//! This module implements file loading for the v9 file format
+
+use crate::{Event, LightweightEvent};
+pub use decodeme::EventDecoder;
+use decodeme::Metadata;
+
+pub const FILE_FORMAT: u32 = decodeme::CURRENT_FILE_FORMAT_VERSION;
+
+impl super::EventDecoder for EventDecoder {
+    fn num_events(&self) -> usize {
+        self.num_events()
+    }
+
+    fn metadata(&self) -> Metadata {
+        self.metadata()
+    }
+
+    fn decode_full_event(&self, event_index: usize) -> Event<'_> {
+        self.decode_full_event(event_index)
+    }
+
+    fn decode_lightweight_event(&self, event_index: usize) -> LightweightEvent {
+        self.decode_lightweight_event(event_index)
+    }
+}

analyzeme/src/profiling_data.rs

@@ -7,6 +7,7 @@ use measureme::file_header::{
 use measureme::{
     EventId, PageTag, RawEvent, SerializationSink, SerializationSinkBuilder, StringTableBuilder,
 };
+use std::cell::OnceCell;
 use std::fs;
 use std::path::Path;
 use std::sync::Arc;
@@ -15,6 +16,7 @@ use std::{error::Error, path::PathBuf};
 #[derive(Debug)]
 pub struct ProfilingData {
     event_decoder: Box<dyn EventDecoder>,
+    metadata: OnceCell<Metadata>,
 }
 
 impl ProfilingData {
@@ -50,9 +52,6 @@ impl ProfilingData {
         data: Vec<u8>,
         diagnostic_file_path: Option<&Path>,
     ) -> Result<ProfilingData, Box<dyn Error + Send + Sync>> {
-        // let event_decoder = EventDecoder::new(data, diagnostic_file_path)?;
-        // Ok(ProfilingData { event_decoder })
-
         let file_format_version = read_file_header(
             &data,
             FILE_MAGIC_TOP_LEVEL,
@@ -66,6 +65,10 @@ impl ProfilingData {
                 data,
                 diagnostic_file_path,
             )?),
+            file_formats::v9::FILE_FORMAT => Box::new(file_formats::v9::EventDecoder::new(
+                data,
+                diagnostic_file_path,
+            )?),
             unsupported_version => {
                 let msg = if unsupported_version > file_formats::current::FILE_FORMAT {
                     format!(
@@ -83,11 +86,15 @@ impl ProfilingData {
             }
         };
 
-        Ok(ProfilingData { event_decoder })
+        Ok(ProfilingData {
+            event_decoder,
+            metadata: OnceCell::new(),
+        })
     }
 
     pub fn metadata(&self) -> &Metadata {
-        self.event_decoder.metadata()
+        // Cache the metadata during the first access
+        self.metadata.get_or_init(|| self.event_decoder.metadata())
     }
 
     pub fn iter<'a>(&'a self) -> ProfilerEventIterator<'a> {
@@ -301,6 +308,7 @@ impl ProfilingDataBuilder {
                 )
                 .unwrap(),
             ),
+            metadata: OnceCell::new(),
         }
     }
 
@@ -641,6 +649,86 @@ mod tests {
             );
         }
 
+        // To generate this revision, a v9 revision of the rust toolchain was
+        // created, and "rustup toolchain link" was used to name it "bespoke".
+        // Then, the following commands were executed:
+        //
+        //   # Make a small test binary and profile it.
+        //   cargo new --bin testbinary
+        //   cargo +bespoke rustc --bin testbinary -- -Zself-profile
+        //
+        //   # Gzip the output profdata.
+        //   gzip testbinary-...mm_profdata
+        //   mv testbinary-...mm_profdata.gz v9.mm_profdata.gz
+        #[test]
+        fn can_read_v9_profdata_files() {
+            let (data, file_format_version) =
+                read_data_and_version("tests/profdata/v9.mm_profdata.gz");
+            assert_eq!(file_format_version, file_formats::v9::FILE_FORMAT);
+            let profiling_data = ProfilingData::from_paged_buffer(data, None)
+                .expect("Creating the profiling data failed");
+            let grouped_events = group_events(&profiling_data);
+            let event_kinds = grouped_events
+                .keys()
+                .map(|k| k.as_str())
+                .collect::<HashSet<_>>();
+            let expect_event_kinds = vec![
+                "GenericActivity",
+                "IncrementalResultHashing",
+                "Query",
+                "ArtifactSize",
+            ]
+            .into_iter()
+            .collect::<HashSet<_>>();
+            assert_eq!(event_kinds, expect_event_kinds);
+
+            let generic_activity_len = 5125;
+            let incremental_hashing_len = 1844;
+            let query_len = 1877;
+            let artifact_size_len = 24;
+            assert_eq!(
+                grouped_events["GenericActivity"].len(),
+                generic_activity_len
+            );
+            assert_eq!(
+                grouped_events["IncrementalResultHashing"].len(),
+                incremental_hashing_len
+            );
+            assert_eq!(grouped_events["Query"].len(), query_len);
+            assert_eq!(grouped_events["ArtifactSize"].len(), artifact_size_len);
+
+            assert_eq!(
+                grouped_events["GenericActivity"][generic_activity_len / 2].label,
+                "metadata_decode_entry_item_attrs"
+            );
+            assert_eq!(
+                grouped_events["GenericActivity"][generic_activity_len / 2].duration(),
+                Some(Duration::from_nanos(376))
+            );
+
+            assert_eq!(
+                grouped_events["IncrementalResultHashing"][incremental_hashing_len - 1].label,
+                "crate_hash"
+            );
+            assert_eq!(
+                grouped_events["IncrementalResultHashing"][incremental_hashing_len - 1].duration(),
+                Some(Duration::from_nanos(461))
+            );
+
+            assert_eq!(grouped_events["Query"][0].label, "registered_tools");
+            assert_eq!(
+                grouped_events["Query"][0].duration(),
+                Some(Duration::from_nanos(45077))
+            );
+
+            assert_eq!(
+                grouped_events["ArtifactSize"][0].label,
+                "codegen_unit_size_estimate"
+            );
+            assert_eq!(grouped_events["ArtifactSize"][0].duration(), None);
+            assert_eq!(grouped_events["ArtifactSize"][0].integer(), Some(3));
+        }
+
         fn read_data_and_version(file_path: &str) -> (Vec<u8>, u32) {
             let data = std::fs::read(file_path).expect("Test data not found");
             let mut gz = flate2::read::GzDecoder::new(&data[..]);

analyzeme/tests/profdata/v9.mm_profdata.gz

@@ -1,6 +1,6 @@
 [package]
 name = "crox"
-version = "10.1.2"
+version = "11.0.0"
 authors = ["Wesley Wiser <[email protected]>"]
 edition = "2018"
 

crox/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "decodeme"
-version = "10.1.2"
+version = "11.0.0"
 edition = "2018"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html