hotspot/src/os/solaris/vm/os_solaris.cpp

rev 7358 : 6536943: Bogus -Xcheck:jni warning for SIG_INT action for SIGINT in JVM started from non-interactive shell
Summary: check_signal_handler will print out Warning for SHURDOWN2_SIGNAL (SIGINT) is replaced by non-interactive shell. Fix by supply more information of the replacement to user.
Reviewed-by: dholmes
Contributed-by: yumin.qi@oracle.com

*** 1,7 ****
  /*
!  * Copyright (c) 1997, 2014, 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.
--- 1,7 ----
  /*
!  * Copyright (c) 1997, 2015, 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.
*** 4591,4600 ****
--- 4591,4605 ----
      tty->print("Warning: %s handler ", exception_name(sig, buf, O_BUFLEN));
      tty->print("expected:%s", get_signal_handler_name(jvmHandler, buf, O_BUFLEN));
      tty->print_cr("  found:%s", get_signal_handler_name(thisHandler, buf, O_BUFLEN));
      // No need to check this sig any longer
      sigaddset(&check_signal_done, sig);
+     // Running under non-interactive shell, SHUTDOWN2_SIGNAL will be reassigned SIG_IGN
+     if (sig == SHUTDOWN2_SIGNAL && !isatty(fileno(stdin))) {
+       tty->print_cr("Running in non-interactive shell, %s handler is replaced by shell",
+                     exception_name(sig, buf, O_BUFLEN));
+     }
    } else if(os::Solaris::get_our_sigflags(sig) != 0 && act.sa_flags != os::Solaris::get_our_sigflags(sig)) {
      tty->print("Warning: %s handler flags ", exception_name(sig, buf, O_BUFLEN));
      tty->print("expected:" PTR32_FORMAT, os::Solaris::get_our_sigflags(sig));
      tty->print_cr("  found:" PTR32_FORMAT, act.sa_flags);
      // No need to check this sig any longer