Generate perfmap files, not jitdump files

RELEASES.md

@@ -4,6 +4,12 @@
 
 ## Unreleased - ReleaseDate
 
+## 0.12.7 - 2024-05-28 - Unity release
+
+### Features
+
+ - For `--coreclr` on mac, set `DOTNET_PerfMapEnabled=3` instead of 2, to only produce much smaller perfmap files instead of jitdump files. If full jit assembly is needed, the environment variable can be set manually.
+
 ## 0.12.6 - 2024-05-23 - Unity release
 
 ### Features

samply/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "usamply"
-version = "0.12.6"
+version = "0.12.7"
 authors = ["Markus Stange <mstange@themasta.com>", "Vladimir Vukicevic <vladimir@pobox.com>"]
 edition = "2021"
 rust-version = "1.74" # needed by clap and wholesym

samply/src/mac/profiler.rs

@@ -57,12 +57,12 @@ pub fn start_recording(
             } = process_launch_props;
 
             if profile_creation_props.coreclr.any_enabled() {
-                // We need to set DOTNET_PerfMapEnabled=2 in the environment if it's not already set.
+                // We need to set DOTNET_PerfMapEnabled=3 in the environment if it's not already set.
                 // If we set it, we'll also set unlink_aux_files=true to avoid leaving files
                 // behind in the temp directory. But if it's set manually, assume the user
                 // knows what they're doing and will specify the arg as needed.
                 if !env_vars.iter().any(|p| p.0 == "DOTNET_PerfMapEnabled") {
-                    env_vars.push(("DOTNET_PerfMapEnabled".into(), "2".into()));
+                    env_vars.push(("DOTNET_PerfMapEnabled".into(), "3".into()));
                     unlink_aux_files = true;
                 }
             }