Added example single-page-rw to generate traces.

Cargo.lock

@@ -879,6 +879,10 @@ dependencies = [
 name = "simple-rw"
 version = "0.1.0"
 
+[[package]]
+name = "single-page-rw"
+version = "0.1.0"
+
 [[package]]
 name = "siphasher"
 version = "0.3.10"

Cargo.toml

@@ -9,6 +9,7 @@ members = [
 	"util/parse-lackey",
 	"examples/simple-rw",
 	"examples/random-rw",
+	"examples/single-page-rw",
 ]
 
 [workspace.dependencies]

examples/single-page-rw/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "single-page-rw"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

examples/single-page-rw/run.sh

@@ -0,0 +1,25 @@
+#!/bin/env bash
+
+# Prepare the `lackey` parser
+# Note: We always compile the `lackey` parser in release, as it might be too slow otherwise
+cargo build --manifest-path "../../Cargo.toml" --release --package "parse-lackey"
+parse_lackey="../../target/release/parse-lackey"
+
+
+# Profile to run the example
+#PROFILE="dev"
+#PROFILE_PATH="debug"
+PROFILE="release"
+PROFILE_PATH="release"
+
+# Compile the example
+cargo build --profile "$PROFILE"
+
+# Then run valgrind on the example and pipe it to the `lackey` parser
+valgrind \
+	--tool=lackey \
+	--trace-mem=yes \
+	--log-fd=1 \
+	"../../target/$PROFILE_PATH/single-page-rw" \
+	|
+	$parse_lackey

examples/single-page-rw/src/main.rs

@@ -0,0 +1,35 @@
+//! Single page read-write test binary
+
+// Imports
+use std::{hint, ptr};
+
+// TODO: Make these runtime constants?
+const PASSES: usize = 10;
+const WRITES_PER_PASS: usize = 10000;
+const READS_PER_PASS: usize = 15000;
+
+fn main() {
+	// Note: We over-allocate to ensure the allocation goes through `mmap`.
+	let mut v = vec![0u8; 128 * PAGE_SIZE];
+
+	// Note: We `step_by` the page size because we only care about initializing a single page.
+	for _ in 0..PASSES {
+		for _ in 0..WRITES_PER_PASS {
+			// SAFETY: Target is valid for writes.
+			// Note: We simply want to avoid the write being elided
+			unsafe {
+				ptr::write_volatile(v.as_mut_ptr(), hint::black_box(0));
+			}
+		}
+
+		for _ in 0..READS_PER_PASS {
+			// SAFETY: Target is valid for writes.
+			// Note: We simply want to avoid the write being elided
+			unsafe {
+				hint::black_box(ptr::read_volatile(v.as_ptr()));
+			}
+		}
+	}
+}
+
+const PAGE_SIZE: usize = 4096;

run.sh

@@ -14,6 +14,7 @@ TRACE_FILE="resources/traces/bfs.g17.n100.t1.trace"
 #TRACE_FILE="resources/traces/bc.g18.n100.t1.trace"
 #TRACE_FILE="examples/simple-rw/output.trace"
 #TRACE_FILE="examples/random-rw/output.trace"
+#TRACE_FILE="examples/single-page-rw/output.trace"
 
 OUTPUT_FILE="resources/data/output.bin.gz"