node.cc

// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

#include <node.h>

#include <uv.h>

#include <v8-debug.h>
#include <node_dtrace.h>

#include <locale.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <string.h>
#include <limits.h> /* PATH_MAX */
#include <assert.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <unistd.h> /* setuid, getuid */

#ifdef __MINGW32__
# include <platform_win32.h> /* winapi_perror() */
# include <platform_win32_winsock.h> /* wsa_init() */
#endif

#ifdef __POSIX__
# include <dlfcn.h> /* dlopen(), dlsym() */
# include <pwd.h> /* getpwnam() */
# include <grp.h> /* getgrnam() */
#endif

#include <platform.h>
#include <node_buffer.h>
#ifdef __POSIX__
# include <node_io_watcher.h>
#endif
#include <node_net.h>
#include <node_events.h>
#include <node_cares.h>
#include <node_file.h>
#include <node_http_parser.h>
#ifdef __POSIX__
# include <node_signal_watcher.h>
# include <node_stat_watcher.h>
#endif
#include <node_child_process.h>
#include <node_constants.h>
#include <node_stdio.h>
#include <node_javascript.h>
#include <node_version.h>
#include <node_string.h>
#ifdef HAVE_OPENSSL
# include <node_crypto.h>
#endif
#include <node_script.h>

#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a)))

using namespace v8;

# ifdef __APPLE__
# include <crt_externs.h>
# define environ (*_NSGetEnviron())
# else
extern char **environ;
# endif

namespace node {

static Persistent<Object> process;

static Persistent<String> errno_symbol;
static Persistent<String> syscall_symbol;
static Persistent<String> errpath_symbol;
static Persistent<String> code_symbol;

static Persistent<String> rss_symbol;
static Persistent<String> vsize_symbol;
static Persistent<String> heap_total_symbol;
static Persistent<String> heap_used_symbol;

static Persistent<String> listeners_symbol;
static Persistent<String> uncaught_exception_symbol;
static Persistent<String> emit_symbol;


static char *eval_string = NULL;
static int option_end_index = 0;
static bool use_debug_agent = false;
static bool debug_wait_connect = false;
static bool cov = false;
static int debug_port=5858;
static int max_stack_size = 0;

static uv_check_t check_tick_watcher;
static uv_prepare_t prepare_tick_watcher;
static uv_idle_t tick_spinner;
static bool need_tick_cb;
static Persistent<String> tick_callback_sym;

static uv_async_t eio_want_poll_notifier;
static uv_async_t eio_done_poll_notifier;
static uv_idle_t eio_poller;

// Buffer for getpwnam_r(), getgrpam_r() and other misc callers; keep this
// scoped at file-level rather than method-level to avoid excess stack usage.
static char getbuf[PATH_MAX + 1];

// We need to notify V8 when we're idle so that it can run the garbage
// collector. The interface to this is V8::IdleNotification(). It returns
// true if the heap hasn't be fully compacted, and needs to be run again.
// Returning false means that it doesn't have anymore work to do.
//
// A rather convoluted algorithm has been devised to determine when Node is
// idle. You'll have to figure it out for yourself.
static uv_check_t gc_check;
static uv_idle_t gc_idle;
static uv_timer_t gc_timer;
bool need_gc;


#define FAST_TICK 0.7
#define GC_WAIT_TIME 5.
#define RPM_SAMPLES 100
#define TICK_TIME(n) tick_times[(tick_time_head - (n)) % RPM_SAMPLES]
static int64_t tick_times[RPM_SAMPLES];
static int tick_time_head;

static void CheckStatus(uv_handle_t* watcher, int status);

static void StartGCTimer () {
  if (!uv_is_active((uv_handle_t*) &gc_timer)) {
    uv_timer_start(&node::gc_timer, node::CheckStatus, 5., 5.);
  }
}

static void StopGCTimer () {
  if (uv_is_active((uv_handle_t*) &gc_timer)) {
    uv_timer_stop(&gc_timer);
  }
}

static void Idle(uv_handle_t* watcher, int status) {
  assert((uv_idle_t*) watcher == &gc_idle);

  //fprintf(stderr, "idle\n");

  if (V8::IdleNotification()) {
    uv_idle_stop(&gc_idle);
    StopGCTimer();
  }
}


// Called directly after every call to select() (or epoll, or whatever)
static void Check(uv_handle_t* watcher, int status) {
  assert((uv_check_t*) watcher == &gc_check);

  tick_times[tick_time_head] = uv_now();
  tick_time_head = (tick_time_head + 1) % RPM_SAMPLES;

  StartGCTimer();

  for (int i = 0; i < (int)(GC_WAIT_TIME/FAST_TICK); i++) {
    double d = TICK_TIME(i+1) - TICK_TIME(i+2);
    //printf("d = %f\n", d);
    // If in the last 5 ticks the difference between
    // ticks was less than 0.7 seconds, then continue.
    if (d < FAST_TICK) {
      //printf("---\n");
      return;
    }
  }

  // Otherwise start the gc!

  //fprintf(stderr, "start idle 2\n");
  uv_idle_start(&node::gc_idle, node::Idle);
}


static void Tick(void) {
  // Avoid entering a V8 scope.
  if (!need_tick_cb) return;

  need_tick_cb = false;
  if (uv_is_active((uv_handle_t*) &tick_spinner)) {
    uv_idle_stop(&tick_spinner);
    uv_unref();
  }

  HandleScope scope;

  if (tick_callback_sym.IsEmpty()) {
    // Lazily set the symbol
    tick_callback_sym =
      Persistent<String>::New(String::NewSymbol("_tickCallback"));
  }

  Local<Value> cb_v = process->Get(tick_callback_sym);
  if (!cb_v->IsFunction()) return;
  Local<Function> cb = Local<Function>::Cast(cb_v);

  TryCatch try_catch;

  cb->Call(process, 0, NULL);

  if (try_catch.HasCaught()) {
    FatalException(try_catch);
  }
}


static void Spin(uv_handle_t* handle, int status) {
  assert((uv_idle_t*) handle == &tick_spinner);
  assert(status == 0);
  Tick();
}


static Handle<Value> NeedTickCallback(const Arguments& args) {
  HandleScope scope;
  need_tick_cb = true;
  // TODO: this tick_spinner shouldn't be necessary. An ev_prepare should be
  // sufficent, the problem is only in the case of the very last "tick" -
  // there is nothing left to do in the event loop and libev will exit. The
  // ev_prepare callback isn't called before exiting. Thus we start this
  // tick_spinner to keep the event loop alive long enough to handle it.
  if (!uv_is_active((uv_handle_t*) &tick_spinner)) {
    uv_idle_start(&tick_spinner, Spin);
    uv_ref();
  }
  return Undefined();
}


static void PrepareTick(uv_handle_t* handle, int status) {
  assert((uv_prepare_t*) handle == &prepare_tick_watcher);
  assert(status == 0);
  Tick();
}


static void CheckTick(uv_handle_t* handle, int status) {
  assert((uv_check_t*) handle == &check_tick_watcher);
  assert(status == 0);
  Tick();
}


static void DoPoll(uv_handle_t* watcher, int status) {
  assert((uv_idle_t*) watcher == &eio_poller);

  //printf("eio_poller\n");

  if (eio_poll() != -1 && uv_is_active((uv_handle_t*) &eio_poller)) {
    //printf("eio_poller stop\n");
    uv_idle_stop(&eio_poller);
    uv_unref();
  }
}


// Called from the main thread.
static void WantPollNotifier(uv_handle_t* watcher, int status) {
  assert((uv_async_t*) watcher == &eio_want_poll_notifier);

  //printf("want poll notifier\n");

  if (eio_poll() == -1 && !uv_is_active((uv_handle_t*) &eio_poller)) {
    //printf("eio_poller start\n");
    uv_idle_start(&eio_poller, node::DoPoll);
    uv_ref();
  }
}


static void DonePollNotifier(uv_handle_t* watcher, int revents) {
  assert((uv_async_t*) watcher == &eio_done_poll_notifier);

  //printf("done poll notifier\n");

  if (eio_poll() != -1 && uv_is_active((uv_handle_t*) &eio_poller)) {
    //printf("eio_poller stop\n");
    uv_idle_stop(&eio_poller);
    uv_unref();
  }
}


// EIOWantPoll() is called from the EIO thread pool each time an EIO
// request (that is, one of the node.fs.* functions) has completed.
static void EIOWantPoll(void) {
  // Signal the main thread that eio_poll need to be processed.
  uv_async_send(&eio_want_poll_notifier);
}


static void EIODonePoll(void) {
  // Signal the main thread that we should stop calling eio_poll().
  // from the idle watcher.
  uv_async_send(&eio_done_poll_notifier);
}


static inline const char *errno_string(int errorno) {
#define ERRNO_CASE(e)  case e: return #e;
  switch (errorno) {

#ifdef EACCES
  ERRNO_CASE(EACCES);
#endif

#ifdef EADDRINUSE
  ERRNO_CASE(EADDRINUSE);
#endif

#ifdef EADDRNOTAVAIL
  ERRNO_CASE(EADDRNOTAVAIL);
#endif

#ifdef EAFNOSUPPORT
  ERRNO_CASE(EAFNOSUPPORT);
#endif

#ifdef EAGAIN
  ERRNO_CASE(EAGAIN);
#endif

#ifdef EWOULDBLOCK
# if EAGAIN != EWOULDBLOCK
  ERRNO_CASE(EWOULDBLOCK);
# endif
#endif

#ifdef EALREADY
  ERRNO_CASE(EALREADY);
#endif

#ifdef EBADF
  ERRNO_CASE(EBADF);
#endif

#ifdef EBADMSG
  ERRNO_CASE(EBADMSG);
#endif

#ifdef EBUSY
  ERRNO_CASE(EBUSY);
#endif

#ifdef ECANCELED
  ERRNO_CASE(ECANCELED);
#endif

#ifdef ECHILD
  ERRNO_CASE(ECHILD);
#endif

#ifdef ECONNABORTED
  ERRNO_CASE(ECONNABORTED);
#endif

#ifdef ECONNREFUSED
  ERRNO_CASE(ECONNREFUSED);
#endif

#ifdef ECONNRESET
  ERRNO_CASE(ECONNRESET);
#endif

#ifdef EDEADLK
  ERRNO_CASE(EDEADLK);
#endif

#ifdef EDESTADDRREQ
  ERRNO_CASE(EDESTADDRREQ);
#endif

#ifdef EDOM
  ERRNO_CASE(EDOM);
#endif

#ifdef EDQUOT
  ERRNO_CASE(EDQUOT);
#endif

#ifdef EEXIST
  ERRNO_CASE(EEXIST);
#endif

#ifdef EFAULT
  ERRNO_CASE(EFAULT);
#endif

#ifdef EFBIG
  ERRNO_CASE(EFBIG);
#endif

#ifdef EHOSTUNREACH
  ERRNO_CASE(EHOSTUNREACH);
#endif

#ifdef EIDRM
  ERRNO_CASE(EIDRM);
#endif

#ifdef EILSEQ
  ERRNO_CASE(EILSEQ);
#endif

#ifdef EINPROGRESS
  ERRNO_CASE(EINPROGRESS);
#endif

#ifdef EINTR
  ERRNO_CASE(EINTR);
#endif

#ifdef EINVAL
  ERRNO_CASE(EINVAL);
#endif

#ifdef EIO
  ERRNO_CASE(EIO);
#endif

#ifdef EISCONN
  ERRNO_CASE(EISCONN);
#endif

#ifdef EISDIR
  ERRNO_CASE(EISDIR);
#endif

#ifdef ELOOP
  ERRNO_CASE(ELOOP);
#endif

#ifdef EMFILE
  ERRNO_CASE(EMFILE);
#endif

#ifdef EMLINK
  ERRNO_CASE(EMLINK);
#endif

#ifdef EMSGSIZE
  ERRNO_CASE(EMSGSIZE);
#endif

#ifdef EMULTIHOP
  ERRNO_CASE(EMULTIHOP);
#endif

#ifdef ENAMETOOLONG
  ERRNO_CASE(ENAMETOOLONG);
#endif

#ifdef ENETDOWN
  ERRNO_CASE(ENETDOWN);
#endif

#ifdef ENETRESET
  ERRNO_CASE(ENETRESET);
#endif

#ifdef ENETUNREACH
  ERRNO_CASE(ENETUNREACH);
#endif

#ifdef ENFILE
  ERRNO_CASE(ENFILE);
#endif

#ifdef ENOBUFS
  ERRNO_CASE(ENOBUFS);
#endif

#ifdef ENODATA
  ERRNO_CASE(ENODATA);
#endif

#ifdef ENODEV
  ERRNO_CASE(ENODEV);
#endif

#ifdef ENOENT
  ERRNO_CASE(ENOENT);
#endif

#ifdef ENOEXEC
  ERRNO_CASE(ENOEXEC);
#endif

#ifdef ENOLINK
  ERRNO_CASE(ENOLINK);
#endif

#ifdef ENOLCK
# if ENOLINK != ENOLCK
  ERRNO_CASE(ENOLCK);
# endif
#endif

#ifdef ENOMEM
  ERRNO_CASE(ENOMEM);
#endif

#ifdef ENOMSG
  ERRNO_CASE(ENOMSG);
#endif

#ifdef ENOPROTOOPT
  ERRNO_CASE(ENOPROTOOPT);
#endif

#ifdef ENOSPC
  ERRNO_CASE(ENOSPC);
#endif

#ifdef ENOSR
  ERRNO_CASE(ENOSR);
#endif

#ifdef ENOSTR
  ERRNO_CASE(ENOSTR);
#endif

#ifdef ENOSYS
  ERRNO_CASE(ENOSYS);
#endif

#ifdef ENOTCONN
  ERRNO_CASE(ENOTCONN);
#endif

#ifdef ENOTDIR
  ERRNO_CASE(ENOTDIR);
#endif

#ifdef ENOTEMPTY
  ERRNO_CASE(ENOTEMPTY);
#endif

#ifdef ENOTSOCK
  ERRNO_CASE(ENOTSOCK);
#endif

#ifdef ENOTSUP
  ERRNO_CASE(ENOTSUP);
#else
# ifdef EOPNOTSUPP
  ERRNO_CASE(EOPNOTSUPP);
# endif
#endif

#ifdef ENOTTY
  ERRNO_CASE(ENOTTY);
#endif

#ifdef ENXIO
  ERRNO_CASE(ENXIO);
#endif


#ifdef EOVERFLOW
  ERRNO_CASE(EOVERFLOW);
#endif

#ifdef EPERM
  ERRNO_CASE(EPERM);
#endif

#ifdef EPIPE
  ERRNO_CASE(EPIPE);
#endif

#ifdef EPROTO
  ERRNO_CASE(EPROTO);
#endif

#ifdef EPROTONOSUPPORT
  ERRNO_CASE(EPROTONOSUPPORT);
#endif

#ifdef EPROTOTYPE
  ERRNO_CASE(EPROTOTYPE);
#endif

#ifdef ERANGE
  ERRNO_CASE(ERANGE);
#endif

#ifdef EROFS
  ERRNO_CASE(EROFS);
#endif

#ifdef ESPIPE
  ERRNO_CASE(ESPIPE);
#endif

#ifdef ESRCH
  ERRNO_CASE(ESRCH);
#endif

#ifdef ESTALE
  ERRNO_CASE(ESTALE);
#endif

#ifdef ETIME
  ERRNO_CASE(ETIME);
#endif

#ifdef ETIMEDOUT
  ERRNO_CASE(ETIMEDOUT);
#endif

#ifdef ETXTBSY
  ERRNO_CASE(ETXTBSY);
#endif

#ifdef EXDEV
  ERRNO_CASE(EXDEV);
#endif

#ifdef WSAEINTR
  ERRNO_CASE(WSAEINTR);
#endif

#ifdef WSAEBADF
  ERRNO_CASE(WSAEBADF);
#endif

#ifdef WSAEACCES
  ERRNO_CASE(WSAEACCES);
#endif

#ifdef WSAEFAULT
  ERRNO_CASE(WSAEFAULT);
#endif

#ifdef WSAEINVAL
  ERRNO_CASE(WSAEINVAL);
#endif

#ifdef WSAEMFILE
  ERRNO_CASE(WSAEMFILE);
#endif

#ifdef WSAEWOULDBLOCK
  ERRNO_CASE(WSAEWOULDBLOCK);
#endif

#ifdef WSAEINPROGRESS
  ERRNO_CASE(WSAEINPROGRESS);
#endif

#ifdef WSAEALREADY
  ERRNO_CASE(WSAEALREADY);
#endif

#ifdef WSAENOTSOCK
  ERRNO_CASE(WSAENOTSOCK);
#endif

#ifdef WSAEDESTADDRREQ
  ERRNO_CASE(WSAEDESTADDRREQ);
#endif

#ifdef WSAEMSGSIZE
  ERRNO_CASE(WSAEMSGSIZE);
#endif

#ifdef WSAEPROTOTYPE
  ERRNO_CASE(WSAEPROTOTYPE);
#endif

#ifdef WSAENOPROTOOPT
  ERRNO_CASE(WSAENOPROTOOPT);
#endif

#ifdef WSAEPROTONOSUPPORT
  ERRNO_CASE(WSAEPROTONOSUPPORT);
#endif

#ifdef WSAESOCKTNOSUPPORT
  ERRNO_CASE(WSAESOCKTNOSUPPORT);
#endif

#ifdef WSAEOPNOTSUPP
  ERRNO_CASE(WSAEOPNOTSUPP);
#endif

#ifdef WSAEPFNOSUPPORT
  ERRNO_CASE(WSAEPFNOSUPPORT);
#endif

#ifdef WSAEAFNOSUPPORT
  ERRNO_CASE(WSAEAFNOSUPPORT);
#endif

#ifdef WSAEADDRINUSE
  ERRNO_CASE(WSAEADDRINUSE);
#endif

#ifdef WSAEADDRNOTAVAIL
  ERRNO_CASE(WSAEADDRNOTAVAIL);
#endif

#ifdef WSAENETDOWN
  ERRNO_CASE(WSAENETDOWN);
#endif

#ifdef WSAENETUNREACH
  ERRNO_CASE(WSAENETUNREACH);
#endif

#ifdef WSAENETRESET
  ERRNO_CASE(WSAENETRESET);
#endif

#ifdef WSAECONNABORTED
  ERRNO_CASE(WSAECONNABORTED);
#endif

#ifdef WSAECONNRESET
  ERRNO_CASE(WSAECONNRESET);
#endif

#ifdef WSAENOBUFS
  ERRNO_CASE(WSAENOBUFS);
#endif

#ifdef WSAEISCONN
  ERRNO_CASE(WSAEISCONN);
#endif

#ifdef WSAENOTCONN
  ERRNO_CASE(WSAENOTCONN);
#endif

#ifdef WSAESHUTDOWN
  ERRNO_CASE(WSAESHUTDOWN);
#endif

#ifdef WSAETOOMANYREFS
  ERRNO_CASE(WSAETOOMANYREFS);
#endif

#ifdef WSAETIMEDOUT
  ERRNO_CASE(WSAETIMEDOUT);
#endif

#ifdef WSAECONNREFUSED
  ERRNO_CASE(WSAECONNREFUSED);
#endif

#ifdef WSAELOOP
  ERRNO_CASE(WSAELOOP);
#endif

#ifdef WSAENAMETOOLONG
  ERRNO_CASE(WSAENAMETOOLONG);
#endif

#ifdef WSAEHOSTDOWN
  ERRNO_CASE(WSAEHOSTDOWN);
#endif

#ifdef WSAEHOSTUNREACH
  ERRNO_CASE(WSAEHOSTUNREACH);
#endif

#ifdef WSAENOTEMPTY
  ERRNO_CASE(WSAENOTEMPTY);
#endif

#ifdef WSAEPROCLIM
  ERRNO_CASE(WSAEPROCLIM);
#endif

#ifdef WSAEUSERS
  ERRNO_CASE(WSAEUSERS);
#endif

#ifdef WSAEDQUOT
  ERRNO_CASE(WSAEDQUOT);
#endif

#ifdef WSAESTALE
  ERRNO_CASE(WSAESTALE);
#endif

#ifdef WSAEREMOTE
  ERRNO_CASE(WSAEREMOTE);
#endif

#ifdef WSASYSNOTREADY
  ERRNO_CASE(WSASYSNOTREADY);
#endif

#ifdef WSAVERNOTSUPPORTED
  ERRNO_CASE(WSAVERNOTSUPPORTED);
#endif

#ifdef WSANOTINITIALISED
  ERRNO_CASE(WSANOTINITIALISED);
#endif

#ifdef WSAEDISCON
  ERRNO_CASE(WSAEDISCON);
#endif

#ifdef WSAENOMORE
  ERRNO_CASE(WSAENOMORE);
#endif

#ifdef WSAECANCELLED
  ERRNO_CASE(WSAECANCELLED);
#endif

#ifdef WSAEINVALIDPROCTABLE
  ERRNO_CASE(WSAEINVALIDPROCTABLE);
#endif

#ifdef WSAEINVALIDPROVIDER
  ERRNO_CASE(WSAEINVALIDPROVIDER);
#endif

#ifdef WSAEPROVIDERFAILEDINIT
  ERRNO_CASE(WSAEPROVIDERFAILEDINIT);
#endif

#ifdef WSASYSCALLFAILURE
  ERRNO_CASE(WSASYSCALLFAILURE);
#endif

#ifdef WSASERVICE_NOT_FOUND
  ERRNO_CASE(WSASERVICE_NOT_FOUND);
#endif

#ifdef WSATYPE_NOT_FOUND
  ERRNO_CASE(WSATYPE_NOT_FOUND);
#endif

#ifdef WSA_E_NO_MORE
  ERRNO_CASE(WSA_E_NO_MORE);
#endif

#ifdef WSA_E_CANCELLED
  ERRNO_CASE(WSA_E_CANCELLED);
#endif

  default: return "";
  }
}

const char *signo_string(int signo) {
#define SIGNO_CASE(e)  case e: return #e;
  switch (signo) {

#ifdef SIGHUP
  SIGNO_CASE(SIGHUP);
#endif

#ifdef SIGINT
  SIGNO_CASE(SIGINT);
#endif

#ifdef SIGQUIT
  SIGNO_CASE(SIGQUIT);
#endif

#ifdef SIGILL
  SIGNO_CASE(SIGILL);
#endif

#ifdef SIGTRAP
  SIGNO_CASE(SIGTRAP);
#endif

#ifdef SIGABRT
  SIGNO_CASE(SIGABRT);
#endif

#ifdef SIGIOT
# if SIGABRT != SIGIOT
  SIGNO_CASE(SIGIOT);
# endif
#endif

#ifdef SIGBUS
  SIGNO_CASE(SIGBUS);
#endif

#ifdef SIGFPE
  SIGNO_CASE(SIGFPE);
#endif

#ifdef SIGKILL
  SIGNO_CASE(SIGKILL);
#endif

#ifdef SIGUSR1
  SIGNO_CASE(SIGUSR1);
#endif

#ifdef SIGSEGV
  SIGNO_CASE(SIGSEGV);
#endif

#ifdef SIGUSR2
  SIGNO_CASE(SIGUSR2);
#endif

#ifdef SIGPIPE
  SIGNO_CASE(SIGPIPE);
#endif

#ifdef SIGALRM
  SIGNO_CASE(SIGALRM);
#endif

  SIGNO_CASE(SIGTERM);

#ifdef SIGCHLD
  SIGNO_CASE(SIGCHLD);
#endif

#ifdef SIGSTKFLT
  SIGNO_CASE(SIGSTKFLT);
#endif


#ifdef SIGCONT
  SIGNO_CASE(SIGCONT);
#endif

#ifdef SIGSTOP
  SIGNO_CASE(SIGSTOP);
#endif

#ifdef SIGTSTP
  SIGNO_CASE(SIGTSTP);
#endif

#ifdef SIGTTIN
  SIGNO_CASE(SIGTTIN);
#endif

#ifdef SIGTTOU
  SIGNO_CASE(SIGTTOU);
#endif

#ifdef SIGURG
  SIGNO_CASE(SIGURG);
#endif

#ifdef SIGXCPU
  SIGNO_CASE(SIGXCPU);
#endif

#ifdef SIGXFSZ
  SIGNO_CASE(SIGXFSZ);
#endif

#ifdef SIGVTALRM
  SIGNO_CASE(SIGVTALRM);
#endif

#ifdef SIGPROF
  SIGNO_CASE(SIGPROF);
#endif

#ifdef SIGWINCH
  SIGNO_CASE(SIGWINCH);
#endif