Collect wall-time on Windows

Author: wesleywiser

collector/src/execute.rs

@@ -1421,6 +1421,14 @@ fn process_stat_output(
             stats.insert("cpu-clock".into(), counters.cpu_clock);
             continue;
         }
+        if line.starts_with("!wall-time:") {
+            let d = &line["!wall-time:".len()..];
+            stats.insert(
+                "wall-time".into(),
+                d.parse().map_err(|e| DeserializeStatError::ParseError(d.to_string(), e))?
+            );
+            continue;
+        }
 
         // The rest of the loop body handles processing output from the Linux `perf` tool
         // so on Windows, we just skip it and go to the next line.

collector/src/rustc-fake.rs

@@ -109,7 +109,11 @@ fn main() {
                 let status = tool.status().expect("tool failed to start");
                 let dur = start.elapsed();
                 assert!(status.success(), "tool did not run successfully");
-                print_time(dur);
+                println!(
+                    "!wall-time:{}.{:09}",
+                    dur.as_secs(),
+                    dur.subsec_nanos()
+                );
 
                 let xperf = std::env::var("XPERF").unwrap_or("xperf.exe".to_string());
                 let mut cmd = Command::new(&xperf);