From db1b67e88a1ff9758b3a1cb58e99b35330e4b038 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Mon, 27 Jul 2020 18:56:19 +0200
Subject: [PATCH] UserspaceEmulator: Set the process and thread name to "(UE)
 Executable"

This makes it much easier to see who's who when running multiple
emulators at the same time. :^)
---
 DevTools/UserspaceEmulator/CMakeLists.txt |  2 +-
 DevTools/UserspaceEmulator/main.cpp       | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/DevTools/UserspaceEmulator/CMakeLists.txt b/DevTools/UserspaceEmulator/CMakeLists.txt
index cd41cd61817..afa694ae59f 100644
--- a/DevTools/UserspaceEmulator/CMakeLists.txt
+++ b/DevTools/UserspaceEmulator/CMakeLists.txt
@@ -10,4 +10,4 @@ set(SOURCES
 )
 
 serenity_bin(UserspaceEmulator)
-target_link_libraries(UserspaceEmulator LibX86 LibDebug LibCore)
+target_link_libraries(UserspaceEmulator LibX86 LibDebug LibCore LibPthread)
diff --git a/DevTools/UserspaceEmulator/main.cpp b/DevTools/UserspaceEmulator/main.cpp
index 82d90a9d1c1..9d2e5018a13 100644
--- a/DevTools/UserspaceEmulator/main.cpp
+++ b/DevTools/UserspaceEmulator/main.cpp
@@ -26,11 +26,15 @@
 
 #include "Emulator.h"
 #include "SoftCPU.h"
+#include <AK/LexicalPath.h>
 #include <AK/LogStream.h>
 #include <AK/MappedFile.h>
+#include <AK/StringBuilder.h>
 #include <LibCore/ArgsParser.h>
 #include <LibELF/Loader.h>
 #include <getopt.h>
+#include <pthread.h>
+#include <string.h>
 
 int main(int argc, char** argv, char** env)
 {
@@ -64,5 +68,17 @@ int main(int argc, char** argv, char** env)
     if (!emulator.load_elf())
         return 1;
 
+    StringBuilder builder;
+    builder.append("(UE) ");
+    builder.append(LexicalPath(arguments[0]).basename());
+    if (set_process_name(builder.string_view().characters_without_null_termination(), builder.string_view().length()) < 0) {
+        perror("set_process_name");
+        return 1;
+    }
+    int rc = pthread_setname_np(pthread_self(), builder.to_string().characters());
+    if (rc != 0) {
+        fprintf(stderr, "pthread_setname_np: %s\n", strerror(rc));
+        return 1;
+    }
     return emulator.exec();
 }