8129526: Solaris: clean up another remnant of interruptible I/O

Reviewed-by: fparain, dcubed

hotspot/src/os/aix/vm/jvm_aix.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2012, 2013 SAP AG. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -48,7 +48,6 @@ JVM_ENTRY_NO_ENV(void*, JVM_RegisterSignal(jint sig, void* handler))
                    : handler;
   switch (sig) {
     /* The following are already used by the VM. */
-    case INTERRUPT_SIGNAL:
     case SIGFPE:
     case SIGILL:
     case SIGSEGV:

hotspot/src/os/aix/vm/jvm_aix.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2012, 2013 SAP AG. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -113,7 +113,6 @@
 /* Signal definitions */
 
 #define BREAK_SIGNAL     SIGQUIT           /* Thread dumping support.    */
-#define INTERRUPT_SIGNAL SIGUSR1           /* Interruptible I/O support. */
 #define SHUTDOWN1_SIGNAL SIGHUP            /* Shutdown Hooks support.    */
 #define SHUTDOWN2_SIGNAL SIGINT
 #define SHUTDOWN3_SIGNAL SIGTERM

hotspot/src/os/aix/vm/os_aix.cpp

@@ -1690,7 +1690,6 @@ void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) {
   print_signal_handler(st, SIGPIPE, buf, buflen);
   print_signal_handler(st, SIGXFSZ, buf, buflen);
   print_signal_handler(st, SIGILL , buf, buflen);
-  print_signal_handler(st, INTERRUPT_SIGNAL, buf, buflen);
   print_signal_handler(st, SR_signum, buf, buflen);
   print_signal_handler(st, SHUTDOWN1_SIGNAL, buf, buflen);
   print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen);
@@ -3309,7 +3308,6 @@ void os::run_periodic_checks() {
   }
 
   DO_SIGNAL_CHECK(SR_signum);
-  DO_SIGNAL_CHECK(INTERRUPT_SIGNAL);
 }
 
 typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *);
@@ -3351,10 +3349,6 @@ void os::Aix::check_signal_handler(int sig) {
     jvmHandler = (address)user_handler();
     break;
 
-  case INTERRUPT_SIGNAL:
-    jvmHandler = CAST_FROM_FN_PTR(address, SIG_DFL);
-    break;
-
   default:
     if (sig == SR_signum) {
       jvmHandler = CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler);
@@ -3965,9 +3959,6 @@ int os::available(int fd, jlong *bytes) {
   if (::fstat64(fd, &buf64) >= 0) {
     mode = buf64.st_mode;
     if (S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) {
-      // XXX: is the following call interruptible? If so, this might
-      // need to go through the INTERRUPT_IO() wrapper as for other
-      // blocking, interruptible calls in this file.
       int n;
       if (::ioctl(fd, FIONREAD, &n) >= 0) {
         *bytes = n;

hotspot/src/os/bsd/vm/jvm_bsd.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 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
@@ -47,7 +47,6 @@ JVM_ENTRY_NO_ENV(void*, JVM_RegisterSignal(jint sig, void* handler))
                    : handler;
   switch (sig) {
     /* The following are already used by the VM. */
-    case INTERRUPT_SIGNAL:
     case SIGFPE:
     case SIGILL:
     case SIGSEGV:

hotspot/src/os/bsd/vm/jvm_bsd.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 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
@@ -107,7 +107,6 @@
 /* Signal definitions */
 
 #define BREAK_SIGNAL     SIGQUIT           /* Thread dumping support.    */
-#define INTERRUPT_SIGNAL SIGUSR1           /* Interruptible I/O support. */
 #define SHUTDOWN1_SIGNAL SIGHUP            /* Shutdown Hooks support.    */
 #define SHUTDOWN2_SIGNAL SIGINT
 #define SHUTDOWN3_SIGNAL SIGTERM

hotspot/src/os/bsd/vm/os_bsd.cpp

@@ -1777,7 +1777,6 @@ void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) {
   print_signal_handler(st, SIGPIPE, buf, buflen);
   print_signal_handler(st, SIGXFSZ, buf, buflen);
   print_signal_handler(st, SIGILL , buf, buflen);
-  print_signal_handler(st, INTERRUPT_SIGNAL, buf, buflen);
   print_signal_handler(st, SR_signum, buf, buflen);
   print_signal_handler(st, SHUTDOWN1_SIGNAL, buf, buflen);
   print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen);
@@ -3345,7 +3344,6 @@ void os::run_periodic_checks() {
   }
 
   DO_SIGNAL_CHECK(SR_signum);
-  DO_SIGNAL_CHECK(INTERRUPT_SIGNAL);
 }
 
 typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *);
@@ -3391,10 +3389,6 @@ void os::Bsd::check_signal_handler(int sig) {
     jvmHandler = (address)user_handler();
     break;
 
-  case INTERRUPT_SIGNAL:
-    jvmHandler = CAST_FROM_FN_PTR(address, SIG_DFL);
-    break;
-
   default:
     if (sig == SR_signum) {
       jvmHandler = CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler);
@@ -3913,9 +3907,6 @@ int os::available(int fd, jlong *bytes) {
   if (::fstat(fd, &buf) >= 0) {
     mode = buf.st_mode;
     if (S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) {
-      // XXX: is the following call interruptible? If so, this might
-      // need to go through the INTERRUPT_IO() wrapper as for other
-      // blocking, interruptible calls in this file.
       int n;
       if (::ioctl(fd, FIONREAD, &n) >= 0) {
         *bytes = n;

hotspot/src/os/linux/vm/jvm_linux.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 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
@@ -47,7 +47,6 @@ JVM_ENTRY_NO_ENV(void*, JVM_RegisterSignal(jint sig, void* handler))
                    : handler;
   switch (sig) {
     /* The following are already used by the VM. */
-    case INTERRUPT_SIGNAL:
     case SIGFPE:
     case SIGILL:
     case SIGSEGV:

hotspot/src/os/linux/vm/jvm_linux.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 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
@@ -88,7 +88,6 @@
 /* Signal definitions */
 
 #define BREAK_SIGNAL     SIGQUIT           /* Thread dumping support.    */
-#define INTERRUPT_SIGNAL SIGUSR1           /* Interruptible I/O support. */
 #define SHUTDOWN1_SIGNAL SIGHUP            /* Shutdown Hooks support.    */
 #define SHUTDOWN2_SIGNAL SIGINT
 #define SHUTDOWN3_SIGNAL SIGTERM

hotspot/src/os/linux/vm/os_linux.cpp

@@ -2302,7 +2302,6 @@ void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) {
   print_signal_handler(st, SIGPIPE, buf, buflen);
   print_signal_handler(st, SIGXFSZ, buf, buflen);
   print_signal_handler(st, SIGILL , buf, buflen);
-  print_signal_handler(st, INTERRUPT_SIGNAL, buf, buflen);
   print_signal_handler(st, SR_signum, buf, buflen);
   print_signal_handler(st, SHUTDOWN1_SIGNAL, buf, buflen);
   print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen);
@@ -4496,7 +4495,6 @@ void os::run_periodic_checks() {
   }
 
   DO_SIGNAL_CHECK(SR_signum);
-  DO_SIGNAL_CHECK(INTERRUPT_SIGNAL);
 }
 
 typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *);
@@ -4542,10 +4540,6 @@ void os::Linux::check_signal_handler(int sig) {
     jvmHandler = (address)user_handler();
     break;
 
-  case INTERRUPT_SIGNAL:
-    jvmHandler = CAST_FROM_FN_PTR(address, SIG_DFL);
-    break;
-
   default:
     if (sig == SR_signum) {
       jvmHandler = CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler);
@@ -5130,9 +5124,6 @@ int os::available(int fd, jlong *bytes) {
   if (::fstat64(fd, &buf64) >= 0) {
     mode = buf64.st_mode;
     if (S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) {
-      // XXX: is the following call interruptible? If so, this might
-      // need to go through the INTERRUPT_IO() wrapper as for other
-      // blocking, interruptible calls in this file.
       int n;
       if (::ioctl(fd, FIONREAD, &n) >= 0) {
         *bytes = n;

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

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 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
@@ -73,11 +73,6 @@ JVM_ENTRY_NO_ENV(void*, JVM_RegisterSignal(jint sig, void* handler))
       if (os::Solaris::is_sig_ignored(sig)) return (void*)1;
   }
 
-  /* Check parameterized signals. Don't allow sharing of our interrupt signal */
-  if (sig == os::Solaris::SIGinterrupt()) {
-      return (void *)-1;
-  }
-
   void* oldHandler = os::signal(sig, newHandler);
   if (oldHandler == os::user_handler()) {
       return (void *)2;

hotspot/src/os/solaris/vm/jvm_solaris.h

@@ -87,7 +87,6 @@
 /* Signal definitions */
 
 #define BREAK_SIGNAL     SIGQUIT           /* Thread dumping support.    */
-#define INTERRUPT_SIGNAL SIGUSR1           /* Interruptible I/O support. */
 #define ASYNC_SIGNAL     SIGUSR2           /* Watcher & async err support. */
 #define SHUTDOWN1_SIGNAL SIGHUP            /* Shutdown Hooks support.    */
 #define SHUTDOWN2_SIGNAL SIGINT
@@ -95,8 +94,7 @@
 /* alternative signals used with -XX:+UseAltSigs (or for backward
    compatibility with 1.2, -Xusealtsigs) flag. Chosen to be
    unlikely to conflict with applications embedding the vm */
-#define ALT_INTERRUPT_SIGNAL (SIGRTMIN + SIGRTMAX)/2 /* alternate intio signal */
+#define ALT_ASYNC_SIGNAL     (SIGRTMIN + SIGRTMAX)/2  /* alternate async signal */
-#define ALT_ASYNC_SIGNAL     ALT_INTERRUPT_SIGNAL+1  /* alternate async signal */
 
 /* With 1.4.1 libjsig added versioning: used in os_solaris.cpp and jsig.c */
 #define JSIG_VERSION_1_4_1   0x30140100

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

@@ -1003,8 +1003,9 @@ bool os::create_thread(Thread* thread, ThreadType thr_type,
 
 // defined for >= Solaris 10. This allows builds on earlier versions
 // of Solaris to take advantage of the newly reserved Solaris JVM signals
-// With SIGJVM1, SIGJVM2, INTERRUPT_SIGNAL is SIGJVM1, ASYNC_SIGNAL is SIGJVM2
+// With SIGJVM1, SIGJVM2, ASYNC_SIGNAL is SIGJVM2 and -XX:+UseAltSigs does
-// and -XX:+UseAltSigs does nothing since these should have no conflict
+// nothing since these should have no conflict. Previously INTERRUPT_SIGNAL
+// was SIGJVM1.
 //
 #if !defined(SIGJVM1)
   #define SIGJVM1 39
@@ -1013,7 +1014,7 @@ bool os::create_thread(Thread* thread, ThreadType thr_type,
 
 debug_only(static bool signal_sets_initialized = false);
 static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs;
-int os::Solaris::_SIGinterrupt = INTERRUPT_SIGNAL;
+
 int os::Solaris::_SIGasync = ASYNC_SIGNAL;
 
 bool os::Solaris::is_sig_ignored(int sig) {
@@ -1058,17 +1059,13 @@ void os::Solaris::signal_sets_init() {
   sigaddset(&unblocked_sigs, SIGFPE);
 
   if (isJVM1available) {
-    os::Solaris::set_SIGinterrupt(SIGJVM1);
     os::Solaris::set_SIGasync(SIGJVM2);
   } else if (UseAltSigs) {
-    os::Solaris::set_SIGinterrupt(ALT_INTERRUPT_SIGNAL);
     os::Solaris::set_SIGasync(ALT_ASYNC_SIGNAL);
   } else {
-    os::Solaris::set_SIGinterrupt(INTERRUPT_SIGNAL);
     os::Solaris::set_SIGasync(ASYNC_SIGNAL);
   }
 
-  sigaddset(&unblocked_sigs, os::Solaris::SIGinterrupt());
   sigaddset(&unblocked_sigs, os::Solaris::SIGasync());
 
   if (!ReduceSignalUsage) {
@@ -1939,8 +1936,6 @@ void os::print_siginfo(outputStream* st, void* siginfo) {
 static int Maxsignum = 0;
 static int *ourSigFlags = NULL;
 
-extern "C" void sigINTRHandler(int, siginfo_t*, void*);
-
 int os::Solaris::get_our_sigflags(int sig) {
   assert(ourSigFlags!=NULL, "signal data structure not initialized");
   assert(sig > 0 && sig < Maxsignum, "vm signal out of expected range");
@@ -2005,8 +2000,7 @@ static void print_signal_handler(outputStream* st, int sig,
   os::Posix::print_sa_flags(st, sa.sa_flags);
 
   // Check: is it our handler?
-  if (handler == CAST_FROM_FN_PTR(address, signalHandler) ||
+  if (handler == CAST_FROM_FN_PTR(address, signalHandler)) {
-      handler == CAST_FROM_FN_PTR(address, sigINTRHandler)) {
     // It is our signal handler
     // check for flags
     if (sa.sa_flags != os::Solaris::get_our_sigflags(sig)) {
@@ -2026,13 +2020,11 @@ void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) {
   print_signal_handler(st, SIGPIPE, buf, buflen);
   print_signal_handler(st, SIGXFSZ, buf, buflen);
   print_signal_handler(st, SIGILL , buf, buflen);
-  print_signal_handler(st, INTERRUPT_SIGNAL, buf, buflen);
   print_signal_handler(st, ASYNC_SIGNAL, buf, buflen);
   print_signal_handler(st, BREAK_SIGNAL, buf, buflen);
   print_signal_handler(st, SHUTDOWN1_SIGNAL , buf, buflen);
   print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen);
   print_signal_handler(st, SHUTDOWN3_SIGNAL, buf, buflen);
-  print_signal_handler(st, os::Solaris::SIGinterrupt(), buf, buflen);
   print_signal_handler(st, os::Solaris::SIGasync(), buf, buflen);
 }
 
@@ -3796,7 +3788,6 @@ void os::os_exception_wrapper(java_call_t f, JavaValue* value,
 // SIGBUS, SIGSEGV, SIGILL, SIGFPE, BREAK_SIGNAL, SIGPIPE, SIGXFSZ,
 // os::Solaris::SIGasync
 // It should be consulted by handlers for any of those signals.
-// It explicitly does not recognize os::Solaris::SIGinterrupt
 //
 // The caller of this routine must pass in the three arguments supplied
 // to the function referred to in the "sa_sigaction" (not the "sa_handler")
@@ -3818,20 +3809,6 @@ void signalHandler(int sig, siginfo_t* info, void* ucVoid) {
   errno = orig_errno;
 }
 
-// Do not delete - if guarantee is ever removed,  a signal handler (even empty)
-// is needed to provoke threads blocked on IO to return an EINTR
-// Note: this explicitly does NOT call JVM_handle_solaris_signal and
-// does NOT participate in signal chaining due to requirement for
-// NOT setting SA_RESTART to make EINTR work.
-extern "C" void sigINTRHandler(int sig, siginfo_t* info, void* ucVoid) {
-  if (UseSignalChaining) {
-    struct sigaction *actp = os::Solaris::get_chained_signal_action(sig);
-    if (actp && actp->sa_handler) {
-      vm_exit_during_initialization("Signal chaining detected for VM interrupt signal, try -XX:+UseAltSigs");
-    }
-  }
-}
-
 // This boolean allows users to forward their own non-matching signals
 // to JVM_handle_solaris_signal, harmlessly.
 bool os::Solaris::signal_handlers_are_installed = false;
@@ -3969,13 +3946,6 @@ void os::Solaris::set_signal_handler(int sig, bool set_installed,
   // not using stack banging
   if (!UseStackBanging && sig == SIGSEGV) {
     sigAct.sa_flags = SA_SIGINFO | SA_RESTART | SA_ONSTACK;
-  } else if (sig == os::Solaris::SIGinterrupt()) {
-    // Interruptible i/o requires SA_RESTART cleared so EINTR
-    // is returned instead of restarting system calls
-    sigemptyset(&sigAct.sa_mask);
-    sigAct.sa_handler = NULL;
-    sigAct.sa_flags = SA_SIGINFO;
-    sigAct.sa_sigaction = sigINTRHandler;
   } else {
     sigAct.sa_flags = SA_SIGINFO | SA_RESTART;
   }
@@ -4027,7 +3997,6 @@ void os::run_periodic_checks() {
   }
 
   // See comments above for using JVM1/JVM2 and UseAltSigs
-  DO_SIGNAL_CHECK(os::Solaris::SIGinterrupt());
   DO_SIGNAL_CHECK(os::Solaris::SIGasync());
 
 }
@@ -4072,12 +4041,9 @@ void os::Solaris::check_signal_handler(int sig) {
     break;
 
   default:
-    int intrsig = os::Solaris::SIGinterrupt();
     int asynsig = os::Solaris::SIGasync();
 
-    if (sig == intrsig) {
+    if (sig == asynsig) {
-      jvmHandler = CAST_FROM_FN_PTR(address, sigINTRHandler);
-    } else if (sig == asynsig) {
       jvmHandler = CAST_FROM_FN_PTR(address, signalHandler);
     } else {
       return;
@@ -4148,8 +4114,7 @@ void os::Solaris::install_signal_handlers() {
   set_signal_handler(SIGFPE, true, true);
 
 
-  if (os::Solaris::SIGinterrupt() > OLDMAXSIGNUM || os::Solaris::SIGasync() > OLDMAXSIGNUM) {
+  if (os::Solaris::SIGasync() > OLDMAXSIGNUM) {
-
     // Pre-1.4.1 Libjsig limited to signal chaining signals <= 32 so
     // can not register overridable signals which might be > 32
     if (libjsig_is_loaded && libjsigversion <= JSIG_VERSION_1_4_1) {
@@ -4159,8 +4124,6 @@ void os::Solaris::install_signal_handlers() {
     }
   }
 
-  // Never ok to chain our SIGinterrupt
-  set_signal_handler(os::Solaris::SIGinterrupt(), true, false);
   set_signal_handler(os::Solaris::SIGasync(), true, true);
 
   if (libjsig_is_loaded && !libjsigdone) {

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

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * 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
@@ -114,16 +114,13 @@ class Solaris {
   static void save_preinstalled_handler(int, struct sigaction&);
   static void check_signal_handler(int sig);
   // For overridable signals
-  static int _SIGinterrupt;                  // user-overridable INTERRUPT_SIGNAL
   static int _SIGasync;                      // user-overridable ASYNC_SIGNAL
-  static void set_SIGinterrupt(int newsig) { _SIGinterrupt = newsig; }
   static void set_SIGasync(int newsig) { _SIGasync = newsig; }
 
  public:
   // Large Page Support--ISM.
   static bool largepage_range(char* addr, size_t size);
 
-  static int SIGinterrupt() { return _SIGinterrupt; }
   static int SIGasync() { return _SIGasync; }
   static address handler_start, handler_end; // start and end pc of thr_sighndlrinfo
 

hotspot/src/os_cpu/solaris_sparc/vm/os_solaris_sparc.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 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
@@ -325,8 +325,6 @@ JVM_handle_solaris_signal(int sig, siginfo_t* info, void* ucVoid,
     }
   }
 
-  guarantee(sig != os::Solaris::SIGinterrupt(), "Can not chain VM interrupt signal, try -XX:+UseAltSigs");
-
   if (sig == os::Solaris::SIGasync()) {
     if (thread || vmthread) {
       OSThread::SR_handler(t, uc);

hotspot/src/os_cpu/solaris_x86/vm/os_solaris_x86.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 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
@@ -382,8 +382,6 @@ JVM_handle_solaris_signal(int sig, siginfo_t* info, void* ucVoid,
     }
   }
 
-  guarantee(sig != os::Solaris::SIGinterrupt(), "Can not chain VM interrupt signal, try -XX:+UseAltSigs");
-
   if (sig == os::Solaris::SIGasync()) {
     if(thread || vmthread){
       OSThread::SR_handler(t, uc);