feat: collect the OTLP data exported by the benchmarks

Cargo.toml

@@ -33,8 +33,11 @@ reqwest-retry = "0.9"
 serde = { workspace = true }
 serde_json = { workspace = true, features = ["preserve_order"] }
 url = "2.5.8"
+hyper = { version = "1.9", features = ["server", "http1"] }
+hyper-util = { version = "0.1.20", features = ["tokio"] }
+http-body-util = "0.1.3"
 sha256 = "1.6"
-tokio = { version = "1", features = ["macros", "rt", "process"] }
+tokio = { version = "1", features = ["fs", "macros", "net", "rt", "sync", "process"] }
 tokio-tar = { package = "astral-tokio-tar", version = "0.6.2" }
 tokio-util = "0.7.18"
 crc-fast = { version = "1.9.0", default-features = false, features = ["std"] }
@@ -79,6 +82,13 @@ which = "8.0.2"
 crc32fast = "1.5.0"
 samply = { path = "crates/samply-codspeed/samply" }
 bytes = "1"
+opentelemetry-proto = { version = "0.33", default-features = false, features = [
+  "gen-tonic-messages",
+  "trace",
+  "logs",
+  "with-serde",
+] }
+prost = "0.14"
 
 # Memory profiling (memtrack) and the capability handling around it are Linux-only.
 [target.'cfg(target_os = "linux")'.dependencies]

crates/exec-harness/src/lib.rs

@@ -69,7 +69,7 @@ pub fn execute_benchmarks(
 
     match measurement_mode {
         MeasurementMode::Walltime => walltime::perform(commands),
-        MeasurementMode::Memory => analysis::perform(commands),
+        MeasurementMode::Memory | MeasurementMode::Telemetry => analysis::perform(commands),
         MeasurementMode::Simulation => analysis::perform_with_valgrind(commands),
     }
 }

crates/instrument-hooks-bindings/src/bindings.rs

@@ -56,6 +56,12 @@ unsafe extern "C" {
 unsafe extern "C" {
     pub fn instrument_hooks_current_timestamp() -> u64;
 }
+unsafe extern "C" {
+    pub fn instrument_hooks_monotonic_offset() -> i64;
+}
+unsafe extern "C" {
+    pub fn instrument_hooks_callgrind_add_obj_skip(path: *const ::std::os::raw::c_char) -> u8;
+}
 pub const instrument_hooks_feature_t_FEATURE_DISABLE_CALLGRIND_MARKERS: instrument_hooks_feature_t =
     0;
 pub type instrument_hooks_feature_t = ::std::os::raw::c_uint;

crates/runner-shared/benches/memtrack_reader.rs

@@ -36,7 +36,9 @@ fn sizes() -> &'static [usize] {
         .ok()
         .and_then(|mode| MeasurementMode::from_str(&mode, true).ok());
     match mode {
-        Some(MeasurementMode::Simulation | MeasurementMode::Memory) => ANALYSIS_MODE_SIZES,
+        Some(
+            MeasurementMode::Simulation | MeasurementMode::Memory | MeasurementMode::Telemetry,
+        ) => ANALYSIS_MODE_SIZES,
         Some(MeasurementMode::Walltime) | None => WALLTIME_MODE_SIZES,
     }
 }

crates/runner-shared/src/fifo.rs

@@ -8,7 +8,7 @@ pub const RUNNER_ACK_FIFO: &str = "/tmp/runner.ack.fifo";
 /// of integrations supporting the new protocol version a significant amount of time before
 /// releasing the runner.
 pub const MINIMAL_SUPPORTED_PROTOCOL_VERSION: u64 = 1;
-pub const CURRENT_PROTOCOL_VERSION: u64 = 2;
+pub const CURRENT_PROTOCOL_VERSION: u64 = 3;
 
 const _: () = assert!(
     MINIMAL_SUPPORTED_PROTOCOL_VERSION <= CURRENT_PROTOCOL_VERSION,
@@ -63,4 +63,9 @@ pub enum Command {
     SetVersion(u64),
     GetIntegrationMode,
     IntegrationModeResponse(IntegrationMode),
+    /// The offset the process adds to its monotonic clock to timestamp its OpenTelemetry data.
+    SetTelemetryMonotonicOffset {
+        pid: i32,
+        offset_ns: i64,
+    },
 }

crates/runner-shared/src/lib.rs

@@ -6,5 +6,6 @@ pub mod metadata;
 pub mod module_symbols;
 pub mod perf_event;
 pub mod runtime_env;
+pub mod telemetry;
 pub mod unwind_data;
 pub mod walltime_results;

crates/runner-shared/src/measurement_mode.rs

@@ -8,6 +8,8 @@ pub enum MeasurementMode {
     Memory,
     #[value(alias = "instrumentation")]
     Simulation,
+    /// Runs the benchmarks without measuring them, to collect the telemetry they emit
+    Telemetry,
 }
 
 impl MeasurementMode {
@@ -19,6 +21,7 @@ impl MeasurementMode {
             Self::Simulation => "instrumentation",
             Self::Walltime => "walltime",
             Self::Memory => "memory",
+            Self::Telemetry => "telemetry",
         }
     }
 }