src/share/vm/runtime/safepoint.hpp

rev 13206 : 8180932: Parallelize safepoint cleanup
Summary: Provide infrastructure to do safepoint cleanup tasks using parallel worker threads
Reviewed-by: dholmes, rehn, dcubed, thartmann

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.

@@ -73,10 +73,22 @@
   enum SafepointTimeoutReason {
     _spinning_timeout = 0,
     _blocking_timeout = 1
   };
 
+  // The enums are listed in the order of the tasks when done serially.
+  enum SafepointCleanupTasks {
+    SAFEPOINT_CLEANUP_DEFLATE_MONITORS,
+    SAFEPOINT_CLEANUP_UPDATE_INLINE_CACHES,
+    SAFEPOINT_CLEANUP_COMPILATION_POLICY,
+    SAFEPOINT_CLEANUP_SYMBOL_TABLE_REHASH,
+    SAFEPOINT_CLEANUP_STRING_TABLE_REHASH,
+    SAFEPOINT_CLEANUP_CLD_PURGE,
+    // Leave this one last.
+    SAFEPOINT_CLEANUP_NUM_TASKS
+  };
+
   typedef struct {
     float  _time_stamp;                        // record when the current safepoint occurs in seconds
     int    _vmop_type;                         // type of VM operation triggers the safepoint
     int    _nof_total_threads;                 // total number of Java threads
     int    _nof_initial_running_threads;       // total number of initially seen running threads