From 06de991f44f3f0f33eed21fb92224a395a2a92ff Mon Sep 17 00:00:00 2001
From: Luck <git@lucko.me>
Date: Wed, 13 Jul 2022 21:10:28 +0100
Subject: Support linux x64 musl

---
 .../common/sampler/async/AsyncProfilerAccess.java  | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'spark-common/src/main/java/me/lucko/spark/common/sampler')

diff --git a/spark-common/src/main/java/me/lucko/spark/common/sampler/async/AsyncProfilerAccess.java b/spark-common/src/main/java/me/lucko/spark/common/sampler/async/AsyncProfilerAccess.java
index d642a53..ef2c035 100644
--- a/spark-common/src/main/java/me/lucko/spark/common/sampler/async/AsyncProfilerAccess.java
+++ b/spark-common/src/main/java/me/lucko/spark/common/sampler/async/AsyncProfilerAccess.java
@@ -29,13 +29,16 @@ import me.lucko.spark.common.util.TemporaryFiles;
 import one.profiler.AsyncProfiler;
 import one.profiler.Events;
 
+import java.io.BufferedReader;
 import java.io.InputStream;
+import java.io.InputStreamReader;
 import java.net.URL;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.StandardCopyOption;
 import java.util.Locale;
 import java.util.logging.Level;
+import java.util.stream.Collectors;
 
 /**
  * Provides a bridge between spark and async-profiler.
@@ -108,8 +111,13 @@ public enum AsyncProfilerAccess {
         String os = System.getProperty("os.name").toLowerCase(Locale.ROOT).replace(" ", "");
         String arch = System.getProperty("os.arch").toLowerCase(Locale.ROOT);
 
+        if (os.equals("linux") && arch.equals("amd64") && isLinuxMusl()) {
+            arch = "amd64-musl";
+        }
+
         Table<String, String, String> supported = ImmutableTable.<String, String, String>builder()
                 .put("linux", "amd64", "linux/amd64")
+                .put("linux", "amd64-musl", "linux/amd64-musl")
                 .put("linux", "aarch64", "linux/aarch64")
                 .put("macosx", "amd64", "macos")
                 .put("macosx", "aarch64", "macos")
@@ -190,4 +198,20 @@ public enum AsyncProfilerAccess {
             super("A runtime error occurred whilst loading the native library", cause);
         }
     }
+
+    // Checks if the system is using musl instead of glibc
+    private static boolean isLinuxMusl() {
+        try {
+            InputStream stream = new ProcessBuilder("sh", "-c", "ldd `which ls`")
+                    .start()
+                    .getInputStream();
+
+            BufferedReader reader = new BufferedReader(new InputStreamReader(stream));
+            String output = reader.lines().collect(Collectors.joining());
+            return output.contains("musl"); // shrug
+        } catch (Throwable e) {
+            // ignore
+            return false;
+        }
+    }
 }
-- 
cgit