From ddb2ff7303982b19adb0a23707722e3ca4ece1d2 Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@gmail.com>
Date: Thu, 28 Dec 2017 13:46:27 +0900
Subject: [PATCH] thread_pthread.c: set MJIT thread name

thread_win32.c: ditto
---
 thread_pthread.c | 6 +++++-
 thread_win32.c   | 1 +
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/thread_pthread.c b/thread_pthread.c
index f8c1480a814d68..0e4ed67380770c 100644
--- a/thread_pthread.c
+++ b/thread_pthread.c
@@ -1798,6 +1798,9 @@ mjit_worker(void *arg)
     if (pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0) {
 	fprintf(stderr, "Cannot enable cancelation in MJIT worker\n");
     }
+#ifdef SET_CURRENT_THREAD_NAME
+    SET_CURRENT_THREAD_NAME("ruby-mjitworker"); /* 16 byte including NUL */
+#endif
     worker_func();
     return NULL;
 }
@@ -1816,7 +1819,8 @@ rb_thread_create_mjit_thread(void (*child_hook)(void), void (*worker_func)(void)
 	/* jit_worker thread is not to be joined */
 	pthread_detach(worker_pid);
 	return TRUE;
-    } else {
+    }
+    else {
 	return FALSE;
     }
 }
diff --git a/thread_win32.c b/thread_win32.c
index 045029f11252c0..fe73e35fb0eaef 100644
--- a/thread_win32.c
+++ b/thread_win32.c
@@ -781,6 +781,7 @@ static unsigned long __stdcall
 mjit_worker(void *arg)
 {
     void (*worker_func)(void) = arg;
+    rb_w32_set_thread_description(GetCurrentThread(), L"ruby-mjitworker");
     worker_func();
     return 0;
 }