Export intermediate results after each benchmark command

src/hyperfine/export/mod.rs

@@ -69,7 +69,7 @@ impl ExportManager {
     }
 
     /// Write the given results to all Exporters contained within this manager
-    pub fn write_results(&self, results: Vec<BenchmarkResult>, unit: Option<Unit>) -> Result<()> {
+    pub fn write_results(&self, results: &[BenchmarkResult], unit: Option<Unit>) -> Result<()> {
         for e in &self.exporters {
             let file_content = e.exporter.serialize(&results, unit)?;
             write_to_file(&e.filename, &file_content)?;

src/main.rs

@@ -49,6 +49,15 @@ fn run(
     // Run the benchmarks
     for (num, cmd) in commands.iter().enumerate() {
         timing_results.push(run_benchmark(num, cmd, shell_spawning_time, options)?);
+
+        // Export (intermediate) results
+        let ans = export_manager.write_results(&timing_results, options.time_unit);
+        if let Err(e) = ans {
+            error(&format!(
+                "The following error occurred while exporting: {}",
+                e
+            ));
+        }
     }
 
     // Print relative speed comparison
@@ -56,15 +65,6 @@ fn run(
         write_benchmark_comparison(&timing_results);
     }
 
-    // Export results
-    let ans = export_manager.write_results(timing_results, options.time_unit);
-    if let Err(e) = ans {
-        error(&format!(
-            "The following error occurred while exporting: {}",
-            e
-        ));
-    }
-
     Ok(())
 }