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src/hotspot/os/linux/os_linux.cpp

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@@ -5570,18 +5570,23 @@
   return munmap(addr, bytes) == 0;
 }
 
 static jlong slow_thread_cpu_time(Thread *thread, bool user_sys_cpu_time);
 
-static clockid_t thread_cpu_clockid(Thread* thread) {
-  pthread_t tid = thread->osthread()->pthread_id();
+static jlong fast_cpu_time(Thread *thread) {
   clockid_t clockid;
-
-  // Get thread clockid
-  int rc = os::Linux::pthread_getcpuclockid(tid, &clockid);
-  assert(rc == 0, "pthread_getcpuclockid is expected to return 0 code");
-  return clockid;
+    int rc = os::Linux::pthread_getcpuclockid(thread->osthread()->pthread_id(),
+                                              &clockid);
+    if (rc == 0) {
+      return os::Linux::fast_thread_cpu_time(clockid);
+    }
+    else {
+      // It's possible to encounter a terminated native thread that failed
+      // to detach itself from the VM - which should result in ESRCH.
+      assert_status(rc == ESRCH, rc, "pthread_getcpuclockid failed");
+      return -1;
+    }
 }
 
 // current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool)
 // are used by JVM M&M and JVMTI to get user+sys or user CPU time
 // of a thread.

@@ -5599,11 +5604,11 @@
 }
 
 jlong os::thread_cpu_time(Thread* thread) {
   // consistent with what current_thread_cpu_time() returns
   if (os::Linux::supports_fast_thread_cpu_time()) {
-    return os::Linux::fast_thread_cpu_time(thread_cpu_clockid(thread));
+    return fast_cpu_time(thread);
   } else {
     return slow_thread_cpu_time(thread, true /* user + sys */);
   }
 }
 

@@ -5615,11 +5620,11 @@
   }
 }
 
 jlong os::thread_cpu_time(Thread *thread, bool user_sys_cpu_time) {
   if (user_sys_cpu_time && os::Linux::supports_fast_thread_cpu_time()) {
-    return os::Linux::fast_thread_cpu_time(thread_cpu_clockid(thread));
+    return fast_cpu_time(thread);
   } else {
     return slow_thread_cpu_time(thread, user_sys_cpu_time);
   }
 }
 
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