diff src/os/posix/vm/os_posix.cpp @ 14909:4ca6dc0799b6

Backout jdk9 merge
author Gilles Duboscq <duboscq@ssw.jku.at>
date Tue, 01 Apr 2014 13:57:07 +0200
parents bb9356ec5967
children 52b4284cb496
line wrap: on
line diff
--- a/src/os/posix/vm/os_posix.cpp	Tue Apr 01 14:09:03 2014 +0200
+++ b/src/os/posix/vm/os_posix.cpp	Tue Apr 01 13:57:07 2014 +0200
@@ -1,47 +1,38 @@
 /*
- * Copyright (c) 1999, 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.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
+* Copyright (c) 1999, 2013, 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.
+*
+* This code is distributed in the hope that it will be useful, but WITHOUT
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+* version 2 for more details (a copy is included in the LICENSE file that
+* accompanied this code).
+*
+* You should have received a copy of the GNU General Public License version
+* 2 along with this work; if not, write to the Free Software Foundation,
+* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+*
+* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+* or visit www.oracle.com if you need additional information or have any
+* questions.
+*
+*/
 
-#include "utilities/globalDefinitions.hpp"
 #include "prims/jvm.h"
 #include "runtime/frame.inline.hpp"
-#include "runtime/interfaceSupport.hpp"
 #include "runtime/os.hpp"
 #include "utilities/vmError.hpp"
 
-#include <signal.h>
 #include <unistd.h>
 #include <sys/resource.h>
 #include <sys/utsname.h>
 #include <pthread.h>
 #include <signal.h>
 
-// Todo: provide a os::get_max_process_id() or similar. Number of processes
-// may have been configured, can be read more accurately from proc fs etc.
-#ifndef MAX_PID
-#define MAX_PID INT_MAX
-#endif
-#define IS_VALID_PID(p) (p > 0 && p < MAX_PID)
 
 // Check core dump limit and report possible place where core can be found
 void os::check_or_create_dump(void* exceptionRecord, void* contextRecord, char* buffer, size_t bufferSize) {
@@ -167,8 +158,8 @@
   if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
   else st->print("%uk", rlim.rlim_cur >> 10);
 
-  // Isn't there on solaris
-#if !defined(TARGET_OS_FAMILY_solaris) && !defined(TARGET_OS_FAMILY_aix)
+  //Isn't there on solaris
+#ifndef TARGET_OS_FAMILY_solaris
   st->print(", NPROC ");
   getrlimit(RLIMIT_NPROC, &rlim);
   if (rlim.rlim_cur == RLIM_INFINITY) st->print("infinity");
@@ -271,6 +262,10 @@
   return ::fdopen(fd, mode);
 }
 
+void* os::get_default_process_handle() {
+  return (void*)::dlopen(NULL, RTLD_LAZY);
+}
+
 // Builds a platform dependent Agent_OnLoad_<lib_name> function name
 // which is used to find statically linked in agents.
 // Parameters:
@@ -316,612 +311,6 @@
   return agent_entry_name;
 }
 
-int os::sleep(Thread* thread, jlong millis, bool interruptible) {
-  assert(thread == Thread::current(),  "thread consistency check");
-
-  ParkEvent * const slp = thread->_SleepEvent ;
-  slp->reset() ;
-  OrderAccess::fence() ;
-
-  if (interruptible) {
-    jlong prevtime = javaTimeNanos();
-
-    for (;;) {
-      if (os::is_interrupted(thread, true)) {
-        return OS_INTRPT;
-      }
-
-      jlong newtime = javaTimeNanos();
-
-      if (newtime - prevtime < 0) {
-        // time moving backwards, should only happen if no monotonic clock
-        // not a guarantee() because JVM should not abort on kernel/glibc bugs
-        assert(!os::supports_monotonic_clock(), "unexpected time moving backwards detected in os::sleep(interruptible)");
-      } else {
-        millis -= (newtime - prevtime) / NANOSECS_PER_MILLISEC;
-      }
-
-      if (millis <= 0) {
-        return OS_OK;
-      }
-
-      prevtime = newtime;
-
-      {
-        assert(thread->is_Java_thread(), "sanity check");
-        JavaThread *jt = (JavaThread *) thread;
-        ThreadBlockInVM tbivm(jt);
-        OSThreadWaitState osts(jt->osthread(), false /* not Object.wait() */);
-
-        jt->set_suspend_equivalent();
-        // cleared by handle_special_suspend_equivalent_condition() or
-        // java_suspend_self() via check_and_wait_while_suspended()
-
-        slp->park(millis);
-
-        // were we externally suspended while we were waiting?
-        jt->check_and_wait_while_suspended();
-      }
-    }
-  } else {
-    OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */);
-    jlong prevtime = javaTimeNanos();
-
-    for (;;) {
-      // It'd be nice to avoid the back-to-back javaTimeNanos() calls on
-      // the 1st iteration ...
-      jlong newtime = javaTimeNanos();
-
-      if (newtime - prevtime < 0) {
-        // time moving backwards, should only happen if no monotonic clock
-        // not a guarantee() because JVM should not abort on kernel/glibc bugs
-        assert(!os::supports_monotonic_clock(), "unexpected time moving backwards detected on os::sleep(!interruptible)");
-      } else {
-        millis -= (newtime - prevtime) / NANOSECS_PER_MILLISEC;
-      }
-
-      if (millis <= 0) break ;
-
-      prevtime = newtime;
-      slp->park(millis);
-    }
-    return OS_OK ;
-  }
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// interrupt support
-
-void os::interrupt(Thread* thread) {
-  assert(Thread::current() == thread || Threads_lock->owned_by_self(),
-    "possibility of dangling Thread pointer");
-
-  OSThread* osthread = thread->osthread();
-
-  if (!osthread->interrupted()) {
-    osthread->set_interrupted(true);
-    // More than one thread can get here with the same value of osthread,
-    // resulting in multiple notifications.  We do, however, want the store
-    // to interrupted() to be visible to other threads before we execute unpark().
-    OrderAccess::fence();
-    ParkEvent * const slp = thread->_SleepEvent ;
-    if (slp != NULL) slp->unpark() ;
-  }
-
-  // For JSR166. Unpark even if interrupt status already was set
-  if (thread->is_Java_thread())
-    ((JavaThread*)thread)->parker()->unpark();
-
-  ParkEvent * ev = thread->_ParkEvent ;
-  if (ev != NULL) ev->unpark() ;
-
-}
-
-bool os::is_interrupted(Thread* thread, bool clear_interrupted) {
-  assert(Thread::current() == thread || Threads_lock->owned_by_self(),
-    "possibility of dangling Thread pointer");
-
-  OSThread* osthread = thread->osthread();
-
-  bool interrupted = osthread->interrupted();
-
-  // NOTE that since there is no "lock" around the interrupt and
-  // is_interrupted operations, there is the possibility that the
-  // interrupted flag (in osThread) will be "false" but that the
-  // low-level events will be in the signaled state. This is
-  // intentional. The effect of this is that Object.wait() and
-  // LockSupport.park() will appear to have a spurious wakeup, which
-  // is allowed and not harmful, and the possibility is so rare that
-  // it is not worth the added complexity to add yet another lock.
-  // For the sleep event an explicit reset is performed on entry
-  // to os::sleep, so there is no early return. It has also been
-  // recommended not to put the interrupted flag into the "event"
-  // structure because it hides the issue.
-  if (interrupted && clear_interrupted) {
-    osthread->set_interrupted(false);
-    // consider thread->_SleepEvent->reset() ... optional optimization
-  }
-
-  return interrupted;
-}
-
-// Returned string is a constant. For unknown signals "UNKNOWN" is returned.
-const char* os::Posix::get_signal_name(int sig, char* out, size_t outlen) {
-
-  static const struct {
-    int sig; const char* name;
-  }
-  info[] =
-  {
-    {  SIGABRT,     "SIGABRT" },
-#ifdef SIGAIO
-    {  SIGAIO,      "SIGAIO" },
-#endif
-    {  SIGALRM,     "SIGALRM" },
-#ifdef SIGALRM1
-    {  SIGALRM1,    "SIGALRM1" },
-#endif
-    {  SIGBUS,      "SIGBUS" },
-#ifdef SIGCANCEL
-    {  SIGCANCEL,   "SIGCANCEL" },
-#endif
-    {  SIGCHLD,     "SIGCHLD" },
-#ifdef SIGCLD
-    {  SIGCLD,      "SIGCLD" },
-#endif
-    {  SIGCONT,     "SIGCONT" },
-#ifdef SIGCPUFAIL
-    {  SIGCPUFAIL,  "SIGCPUFAIL" },
-#endif
-#ifdef SIGDANGER
-    {  SIGDANGER,   "SIGDANGER" },
-#endif
-#ifdef SIGDIL
-    {  SIGDIL,      "SIGDIL" },
-#endif
-#ifdef SIGEMT
-    {  SIGEMT,      "SIGEMT" },
-#endif
-    {  SIGFPE,      "SIGFPE" },
-#ifdef SIGFREEZE
-    {  SIGFREEZE,   "SIGFREEZE" },
-#endif
-#ifdef SIGGFAULT
-    {  SIGGFAULT,   "SIGGFAULT" },
-#endif
-#ifdef SIGGRANT
-    {  SIGGRANT,    "SIGGRANT" },
-#endif
-    {  SIGHUP,      "SIGHUP" },
-    {  SIGILL,      "SIGILL" },
-    {  SIGINT,      "SIGINT" },
-#ifdef SIGIO
-    {  SIGIO,       "SIGIO" },
-#endif
-#ifdef SIGIOINT
-    {  SIGIOINT,    "SIGIOINT" },
-#endif
-#ifdef SIGIOT
-  // SIGIOT is there for BSD compatibility, but on most Unices just a
-  // synonym for SIGABRT. The result should be "SIGABRT", not
-  // "SIGIOT".
-  #if (SIGIOT != SIGABRT )
-    {  SIGIOT,      "SIGIOT" },
-  #endif
-#endif
-#ifdef SIGKAP
-    {  SIGKAP,      "SIGKAP" },
-#endif
-    {  SIGKILL,     "SIGKILL" },
-#ifdef SIGLOST
-    {  SIGLOST,     "SIGLOST" },
-#endif
-#ifdef SIGLWP
-    {  SIGLWP,      "SIGLWP" },
-#endif
-#ifdef SIGLWPTIMER
-    {  SIGLWPTIMER, "SIGLWPTIMER" },
-#endif
-#ifdef SIGMIGRATE
-    {  SIGMIGRATE,  "SIGMIGRATE" },
-#endif
-#ifdef SIGMSG
-    {  SIGMSG,      "SIGMSG" },
-#endif
-    {  SIGPIPE,     "SIGPIPE" },
-#ifdef SIGPOLL
-    {  SIGPOLL,     "SIGPOLL" },
-#endif
-#ifdef SIGPRE
-    {  SIGPRE,      "SIGPRE" },
-#endif
-    {  SIGPROF,     "SIGPROF" },
-#ifdef SIGPTY
-    {  SIGPTY,      "SIGPTY" },
-#endif
-#ifdef SIGPWR
-    {  SIGPWR,      "SIGPWR" },
-#endif
-    {  SIGQUIT,     "SIGQUIT" },
-#ifdef SIGRECONFIG
-    {  SIGRECONFIG, "SIGRECONFIG" },
-#endif
-#ifdef SIGRECOVERY
-    {  SIGRECOVERY, "SIGRECOVERY" },
-#endif
-#ifdef SIGRESERVE
-    {  SIGRESERVE,  "SIGRESERVE" },
-#endif
-#ifdef SIGRETRACT
-    {  SIGRETRACT,  "SIGRETRACT" },
-#endif
-#ifdef SIGSAK
-    {  SIGSAK,      "SIGSAK" },
-#endif
-    {  SIGSEGV,     "SIGSEGV" },
-#ifdef SIGSOUND
-    {  SIGSOUND,    "SIGSOUND" },
-#endif
-    {  SIGSTOP,     "SIGSTOP" },
-    {  SIGSYS,      "SIGSYS" },
-#ifdef SIGSYSERROR
-    {  SIGSYSERROR, "SIGSYSERROR" },
-#endif
-#ifdef SIGTALRM
-    {  SIGTALRM,    "SIGTALRM" },
-#endif
-    {  SIGTERM,     "SIGTERM" },
-#ifdef SIGTHAW
-    {  SIGTHAW,     "SIGTHAW" },
-#endif
-    {  SIGTRAP,     "SIGTRAP" },
-#ifdef SIGTSTP
-    {  SIGTSTP,     "SIGTSTP" },
-#endif
-    {  SIGTTIN,     "SIGTTIN" },
-    {  SIGTTOU,     "SIGTTOU" },
-#ifdef SIGURG
-    {  SIGURG,      "SIGURG" },
-#endif
-    {  SIGUSR1,     "SIGUSR1" },
-    {  SIGUSR2,     "SIGUSR2" },
-#ifdef SIGVIRT
-    {  SIGVIRT,     "SIGVIRT" },
-#endif
-    {  SIGVTALRM,   "SIGVTALRM" },
-#ifdef SIGWAITING
-    {  SIGWAITING,  "SIGWAITING" },
-#endif
-#ifdef SIGWINCH
-    {  SIGWINCH,    "SIGWINCH" },
-#endif
-#ifdef SIGWINDOW
-    {  SIGWINDOW,   "SIGWINDOW" },
-#endif
-    {  SIGXCPU,     "SIGXCPU" },
-    {  SIGXFSZ,     "SIGXFSZ" },
-#ifdef SIGXRES
-    {  SIGXRES,     "SIGXRES" },
-#endif
-    { -1, NULL }
-  };
-
-  const char* ret = NULL;
-
-#ifdef SIGRTMIN
-  if (sig >= SIGRTMIN && sig <= SIGRTMAX) {
-    if (sig == SIGRTMIN) {
-      ret = "SIGRTMIN";
-    } else if (sig == SIGRTMAX) {
-      ret = "SIGRTMAX";
-    } else {
-      jio_snprintf(out, outlen, "SIGRTMIN+%d", sig - SIGRTMIN);
-      return out;
-    }
-  }
-#endif
-
-  if (sig > 0) {
-    for (int idx = 0; info[idx].sig != -1; idx ++) {
-      if (info[idx].sig == sig) {
-        ret = info[idx].name;
-        break;
-      }
-    }
-  }
-
-  if (!ret) {
-    if (!is_valid_signal(sig)) {
-      ret = "INVALID";
-    } else {
-      ret = "UNKNOWN";
-    }
-  }
-
-  jio_snprintf(out, outlen, ret);
-  return out;
-}
-
-// Returns true if signal number is valid.
-bool os::Posix::is_valid_signal(int sig) {
-  // MacOS not really POSIX compliant: sigaddset does not return
-  // an error for invalid signal numbers. However, MacOS does not
-  // support real time signals and simply seems to have just 33
-  // signals with no holes in the signal range.
-#ifdef __APPLE__
-  return sig >= 1 && sig < NSIG;
-#else
-  // Use sigaddset to check for signal validity.
-  sigset_t set;
-  if (sigaddset(&set, sig) == -1 && errno == EINVAL) {
-    return false;
-  }
-  return true;
-#endif
-}
-
-#define NUM_IMPORTANT_SIGS 32
-// Returns one-line short description of a signal set in a user provided buffer.
-const char* os::Posix::describe_signal_set_short(const sigset_t* set, char* buffer, size_t buf_size) {
-  assert(buf_size == (NUM_IMPORTANT_SIGS + 1), "wrong buffer size");
-  // Note: for shortness, just print out the first 32. That should
-  // cover most of the useful ones, apart from realtime signals.
-  for (int sig = 1; sig <= NUM_IMPORTANT_SIGS; sig++) {
-    const int rc = sigismember(set, sig);
-    if (rc == -1 && errno == EINVAL) {
-      buffer[sig-1] = '?';
-    } else {
-      buffer[sig-1] = rc == 0 ? '0' : '1';
-    }
-  }
-  buffer[NUM_IMPORTANT_SIGS] = 0;
-  return buffer;
-}
-
-// Prints one-line description of a signal set.
-void os::Posix::print_signal_set_short(outputStream* st, const sigset_t* set) {
-  char buf[NUM_IMPORTANT_SIGS + 1];
-  os::Posix::describe_signal_set_short(set, buf, sizeof(buf));
-  st->print(buf);
-}
-
-// Writes one-line description of a combination of sigaction.sa_flags into a user
-// provided buffer. Returns that buffer.
-const char* os::Posix::describe_sa_flags(int flags, char* buffer, size_t size) {
-  char* p = buffer;
-  size_t remaining = size;
-  bool first = true;
-  int idx = 0;
-
-  assert(buffer, "invalid argument");
-
-  if (size == 0) {
-    return buffer;
-  }
-
-  strncpy(buffer, "none", size);
-
-  const struct {
-    int i;
-    const char* s;
-  } flaginfo [] = {
-    { SA_NOCLDSTOP, "SA_NOCLDSTOP" },
-    { SA_ONSTACK,   "SA_ONSTACK"   },
-    { SA_RESETHAND, "SA_RESETHAND" },
-    { SA_RESTART,   "SA_RESTART"   },
-    { SA_SIGINFO,   "SA_SIGINFO"   },
-    { SA_NOCLDWAIT, "SA_NOCLDWAIT" },
-    { SA_NODEFER,   "SA_NODEFER"   },
-#ifdef AIX
-    { SA_ONSTACK,   "SA_ONSTACK"   },
-    { SA_OLDSTYLE,  "SA_OLDSTYLE"  },
-#endif
-    { 0, NULL }
-  };
-
-  for (idx = 0; flaginfo[idx].s && remaining > 1; idx++) {
-    if (flags & flaginfo[idx].i) {
-      if (first) {
-        jio_snprintf(p, remaining, "%s", flaginfo[idx].s);
-        first = false;
-      } else {
-        jio_snprintf(p, remaining, "|%s", flaginfo[idx].s);
-      }
-      const size_t len = strlen(p);
-      p += len;
-      remaining -= len;
-    }
-  }
-
-  buffer[size - 1] = '\0';
-
-  return buffer;
-}
-
-// Prints one-line description of a combination of sigaction.sa_flags.
-void os::Posix::print_sa_flags(outputStream* st, int flags) {
-  char buffer[0x100];
-  os::Posix::describe_sa_flags(flags, buffer, sizeof(buffer));
-  st->print(buffer);
-}
-
-// Helper function for os::Posix::print_siginfo_...():
-// return a textual description for signal code.
-struct enum_sigcode_desc_t {
-  const char* s_name;
-  const char* s_desc;
-};
-
-static bool get_signal_code_description(const siginfo_t* si, enum_sigcode_desc_t* out) {
-
-  const struct {
-    int sig; int code; const char* s_code; const char* s_desc;
-  } t1 [] = {
-    { SIGILL,  ILL_ILLOPC,   "ILL_ILLOPC",   "Illegal opcode." },
-    { SIGILL,  ILL_ILLOPN,   "ILL_ILLOPN",   "Illegal operand." },
-    { SIGILL,  ILL_ILLADR,   "ILL_ILLADR",   "Illegal addressing mode." },
-    { SIGILL,  ILL_ILLTRP,   "ILL_ILLTRP",   "Illegal trap." },
-    { SIGILL,  ILL_PRVOPC,   "ILL_PRVOPC",   "Privileged opcode." },
-    { SIGILL,  ILL_PRVREG,   "ILL_PRVREG",   "Privileged register." },
-    { SIGILL,  ILL_COPROC,   "ILL_COPROC",   "Coprocessor error." },
-    { SIGILL,  ILL_BADSTK,   "ILL_BADSTK",   "Internal stack error." },
-#if defined(IA64) && defined(LINUX)
-    { SIGILL,  ILL_BADIADDR, "ILL_BADIADDR", "Unimplemented instruction address" },
-    { SIGILL,  ILL_BREAK,    "ILL_BREAK",    "Application Break instruction" },
-#endif
-    { SIGFPE,  FPE_INTDIV,   "FPE_INTDIV",   "Integer divide by zero." },
-    { SIGFPE,  FPE_INTOVF,   "FPE_INTOVF",   "Integer overflow." },
-    { SIGFPE,  FPE_FLTDIV,   "FPE_FLTDIV",   "Floating-point divide by zero." },
-    { SIGFPE,  FPE_FLTOVF,   "FPE_FLTOVF",   "Floating-point overflow." },
-    { SIGFPE,  FPE_FLTUND,   "FPE_FLTUND",   "Floating-point underflow." },
-    { SIGFPE,  FPE_FLTRES,   "FPE_FLTRES",   "Floating-point inexact result." },
-    { SIGFPE,  FPE_FLTINV,   "FPE_FLTINV",   "Invalid floating-point operation." },
-    { SIGFPE,  FPE_FLTSUB,   "FPE_FLTSUB",   "Subscript out of range." },
-    { SIGSEGV, SEGV_MAPERR,  "SEGV_MAPERR",  "Address not mapped to object." },
-    { SIGSEGV, SEGV_ACCERR,  "SEGV_ACCERR",  "Invalid permissions for mapped object." },
-#ifdef AIX
-    // no explanation found what keyerr would be
-    { SIGSEGV, SEGV_KEYERR,  "SEGV_KEYERR",  "key error" },
-#endif
-#if defined(IA64) && !defined(AIX)
-    { SIGSEGV, SEGV_PSTKOVF, "SEGV_PSTKOVF", "Paragraph stack overflow" },
-#endif
-    { SIGBUS,  BUS_ADRALN,   "BUS_ADRALN",   "Invalid address alignment." },
-    { SIGBUS,  BUS_ADRERR,   "BUS_ADRERR",   "Nonexistent physical address." },
-    { SIGBUS,  BUS_OBJERR,   "BUS_OBJERR",   "Object-specific hardware error." },
-    { SIGTRAP, TRAP_BRKPT,   "TRAP_BRKPT",   "Process breakpoint." },
-    { SIGTRAP, TRAP_TRACE,   "TRAP_TRACE",   "Process trace trap." },
-    { SIGCHLD, CLD_EXITED,   "CLD_EXITED",   "Child has exited." },
-    { SIGCHLD, CLD_KILLED,   "CLD_KILLED",   "Child has terminated abnormally and did not create a core file." },
-    { SIGCHLD, CLD_DUMPED,   "CLD_DUMPED",   "Child has terminated abnormally and created a core file." },
-    { SIGCHLD, CLD_TRAPPED,  "CLD_TRAPPED",  "Traced child has trapped." },
-    { SIGCHLD, CLD_STOPPED,  "CLD_STOPPED",  "Child has stopped." },
-    { SIGCHLD, CLD_CONTINUED,"CLD_CONTINUED","Stopped child has continued." },
-#ifdef SIGPOLL
-    { SIGPOLL, POLL_OUT,     "POLL_OUT",     "Output buffers available." },
-    { SIGPOLL, POLL_MSG,     "POLL_MSG",     "Input message available." },
-    { SIGPOLL, POLL_ERR,     "POLL_ERR",     "I/O error." },
-    { SIGPOLL, POLL_PRI,     "POLL_PRI",     "High priority input available." },
-    { SIGPOLL, POLL_HUP,     "POLL_HUP",     "Device disconnected. [Option End]" },
-#endif
-    { -1, -1, NULL, NULL }
-  };
-
-  // Codes valid in any signal context.
-  const struct {
-    int code; const char* s_code; const char* s_desc;
-  } t2 [] = {
-    { SI_USER,      "SI_USER",     "Signal sent by kill()." },
-    { SI_QUEUE,     "SI_QUEUE",    "Signal sent by the sigqueue()." },
-    { SI_TIMER,     "SI_TIMER",    "Signal generated by expiration of a timer set by timer_settime()." },
-    { SI_ASYNCIO,   "SI_ASYNCIO",  "Signal generated by completion of an asynchronous I/O request." },
-    { SI_MESGQ,     "SI_MESGQ",    "Signal generated by arrival of a message on an empty message queue." },
-    // Linux specific
-#ifdef SI_TKILL
-    { SI_TKILL,     "SI_TKILL",    "Signal sent by tkill (pthread_kill)" },
-#endif
-#ifdef SI_DETHREAD
-    { SI_DETHREAD,  "SI_DETHREAD", "Signal sent by execve() killing subsidiary threads" },
-#endif
-#ifdef SI_KERNEL
-    { SI_KERNEL,    "SI_KERNEL",   "Signal sent by kernel." },
-#endif
-#ifdef SI_SIGIO
-    { SI_SIGIO,     "SI_SIGIO",    "Signal sent by queued SIGIO" },
-#endif
-
-#ifdef AIX
-    { SI_UNDEFINED, "SI_UNDEFINED","siginfo contains partial information" },
-    { SI_EMPTY,     "SI_EMPTY",    "siginfo contains no useful information" },
-#endif
-
-#ifdef __sun
-    { SI_NOINFO,    "SI_NOINFO",   "No signal information" },
-    { SI_RCTL,      "SI_RCTL",     "kernel generated signal via rctl action" },
-    { SI_LWP,       "SI_LWP",      "Signal sent via lwp_kill" },
-#endif
-
-    { -1, NULL, NULL }
-  };
-
-  const char* s_code = NULL;
-  const char* s_desc = NULL;
-
-  for (int i = 0; t1[i].sig != -1; i ++) {
-    if (t1[i].sig == si->si_signo && t1[i].code == si->si_code) {
-      s_code = t1[i].s_code;
-      s_desc = t1[i].s_desc;
-      break;
-    }
-  }
-
-  if (s_code == NULL) {
-    for (int i = 0; t2[i].s_code != NULL; i ++) {
-      if (t2[i].code == si->si_code) {
-        s_code = t2[i].s_code;
-        s_desc = t2[i].s_desc;
-      }
-    }
-  }
-
-  if (s_code == NULL) {
-    out->s_name = "unknown";
-    out->s_desc = "unknown";
-    return false;
-  }
-
-  out->s_name = s_code;
-  out->s_desc = s_desc;
-
-  return true;
-}
-
-// A POSIX conform, platform-independend siginfo print routine.
-// Short print out on one line.
-void os::Posix::print_siginfo_brief(outputStream* os, const siginfo_t* si) {
-  char buf[20];
-  os->print("siginfo: ");
-
-  if (!si) {
-    os->print("<null>");
-    return;
-  }
-
-  // See print_siginfo_full() for details.
-  const int sig = si->si_signo;
-
-  os->print("si_signo: %d (%s)", sig, os::Posix::get_signal_name(sig, buf, sizeof(buf)));
-
-  enum_sigcode_desc_t ed;
-  if (get_signal_code_description(si, &ed)) {
-    os->print(", si_code: %d (%s)", si->si_code, ed.s_name);
-  } else {
-    os->print(", si_code: %d (unknown)", si->si_code);
-  }
-
-  if (si->si_errno) {
-    os->print(", si_errno: %d", si->si_errno);
-  }
-
-  const int me = (int) ::getpid();
-  const int pid = (int) si->si_pid;
-
-  if (si->si_code == SI_USER || si->si_code == SI_QUEUE) {
-    if (IS_VALID_PID(pid) && pid != me) {
-      os->print(", sent from pid: %d (uid: %d)", pid, (int) si->si_uid);
-    }
-  } else if (sig == SIGSEGV || sig == SIGBUS || sig == SIGILL ||
-             sig == SIGTRAP || sig == SIGFPE) {
-    os->print(", si_addr: " PTR_FORMAT, si->si_addr);
-#ifdef SIGPOLL
-  } else if (sig == SIGPOLL) {
-    os->print(", si_band: " PTR64_FORMAT, (uint64_t)si->si_band);
-#endif
-  } else if (sig == SIGCHLD) {
-    os->print_cr(", si_pid: %d, si_uid: %d, si_status: %d", (int) si->si_pid, si->si_uid, si->si_status);
-  }
-}
-
 os::WatcherThreadCrashProtection::WatcherThreadCrashProtection() {
   assert(Thread::current()->is_Watcher_thread(), "Must be WatcherThread");
 }