Revert "Revert^2 "Thread suspension cleanup and deadlock fix""

This reverts commit fd20a745227aa7cae7a08728bb29e5bfce64ea87.

Reason for revert: Lots of libartd failures due to new checkpoint lock level check.

Change-Id: I0cf88ff893f8743a9a830a49489807d0921199a3

1 files changed, 7 insertions, 1 deletions

diff --git a/runtime/native/java_lang_Thread.cc b/runtime/native/java_lang_Thread.cc
index fd67a0a7fa..570c554782 100644
--- a/runtime/native/java_lang_Thread.cc
+++ b/runtime/native/java_lang_Thread.cc
@@ -147,8 +147,11 @@ static void Thread_setNativeName(JNIEnv* env, jobject peer, jstring java_name) {
   // thread list lock to avoid this, as setting the thread name causes mutator to lock/unlock
   // in the DDMS send code.
   ThreadList* thread_list = Runtime::Current()->GetThreadList();
+  bool timed_out;
   // Take suspend thread lock to avoid races with threads trying to suspend this one.
-  Thread* thread = thread_list->SuspendThreadByPeer(peer, SuspendReason::kInternal);
+  Thread* thread = thread_list->SuspendThreadByPeer(peer,
+                                                    SuspendReason::kInternal,
+                                                    &timed_out);
   if (thread != nullptr) {
     {
       ScopedObjectAccess soa(env);
@@ -156,6 +159,9 @@ static void Thread_setNativeName(JNIEnv* env, jobject peer, jstring java_name) {
     }
     bool resumed = thread_list->Resume(thread, SuspendReason::kInternal);
     DCHECK(resumed);
+  } else if (timed_out) {
+    LOG(ERROR) << "Trying to set thread name to '" << name.c_str() << "' failed as the thread "
+        "failed to suspend within a generous timeout.";
   }
 }