src/os/windows/vm/os_windows.hpp

rev 8957 : 8223147: JFR Backport
8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling

*** 109,118 ****
--- 109,140 ----
   * To be able to use this - don't take locks, don't rely on destructors,
   * don't make OS library calls, don't allocate memory, don't print,
   * don't call code that could leave the heap / memory in an inconsistent state,
   * or anything else where we are not in control if we suddenly jump out.
   */
+ class ThreadCrashProtection : public StackObj {
+ public:
+   static bool is_crash_protected(Thread* thr) {
+     return _crash_protection != NULL && _protected_thread == thr;
+   }
+ 
+   ThreadCrashProtection();
+   bool call(os::CrashProtectionCallback& cb);
+ private:
+   static Thread* _protected_thread;
+   static ThreadCrashProtection* _crash_protection;
+   static volatile intptr_t _crash_mux;
+ };
+ 
+ /*
+  * Crash protection for the watcher thread. Wrap the callback
+  * with a __try { call() }
+  * To be able to use this - don't take locks, don't rely on destructors,
+  * don't make OS library calls, don't allocate memory, don't print,
+  * don't call code that could leave the heap / memory in an inconsistent state,
+  * or anything else where we are not in control if we suddenly jump out.
+  */
  class WatcherThreadCrashProtection : public StackObj {
  public:
    WatcherThreadCrashProtection();
    bool call(os::CrashProtectionCallback& cb);
  };