// than it does for an attempt to access a valid but unmapped address.
		// OS X 10.9.2 mishandles the malformed address case, making it look like
		// a user-generated signal (like someone ran kill -SEGV ourpid).
		// We pass user-generated signals to os/signal, or else ignore them.
		// Doing that here - and returning to the faulting code - results in an
		// infinite loop. It appears the best we can do is rewrite what the kernel

  }

  /**
   * Signals some other thread waiting on a satisfied guard, if one exists.
   *
   * <p>We manage calls to this method carefully, to signal only when necessary, but never losing a
   * signal, which is the classic problem of this kind of concurrency construct. We must signal if

	SIGPOLL   = Signal(0x1d)
	SIGPROF   = Signal(0x1b)
	SIGPWR    = Signal(0x1e)
	SIGQUIT   = Signal(0x3)
	SIGSEGV   = Signal(0xb)
	SIGSTKFLT = Signal(0x10)
	SIGSTOP   = Signal(0x13)
	SIGSYS    = Signal(0x1f)
	SIGTERM   = Signal(0xf)
	SIGTRAP   = Signal(0x5)
	SIGTSTP   = Signal(0x14)
	SIGTTIN   = Signal(0x15)
	SIGTTOU   = Signal(0x16)
	SIGUNUSED = Signal(0x1f)
	SIGURG    = Signal(0x17)

limitations under the License.
*/

#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

#define STRINGIFY(x) #x
#define VERSION_STRING(x) STRINGIFY(x)

#ifndef VERSION
#define VERSION HEAD
#endif

static void sigdown(int signo) {
  psignal(signo, "Shutting down, got signal");
  exit(0);
}

	/*
	The libc function(s) we call here must form a no-op and include at least one
	call that triggers TSAN to process pending asynchronous signals.

	sleep(0) would be fine, but it's not portable C (so it would need more header
	guards).
	free(NULL) has a fast-path special case in TSAN, so it doesn't
	trigger signal delivery.
	free(malloc(0)) would work (triggering the interceptors in malloc), but
	it also runs a bunch of user-supplied malloc hooks.

	SIGPIPE   = Signal(0xd)
	SIGPROF   = Signal(0x1b)
	SIGQUIT   = Signal(0x3)
	SIGSEGV   = Signal(0xb)
	SIGSTOP   = Signal(0x11)
	SIGSYS    = Signal(0xc)
	SIGTERM   = Signal(0xf)
	SIGTRAP   = Signal(0x5)
	SIGTSTP   = Signal(0x12)
	SIGTTIN   = Signal(0x15)
	SIGTTOU   = Signal(0x16)
	SIGURG    = Signal(0x10)
	SIGUSR1   = Signal(0x1e)
	SIGUSR2   = Signal(0x1f)
	SIGVTALRM = Signal(0x1a)

	SIGIO      = Signal(0x16)
	SIGIOT     = Signal(0x6)
	SIGJVM1    = Signal(0x27)
	SIGJVM2    = Signal(0x28)
	SIGKILL    = Signal(0x9)
	SIGLOST    = Signal(0x25)
	SIGLWP     = Signal(0x21)
	SIGPIPE    = Signal(0xd)
	SIGPOLL    = Signal(0x16)
	SIGPROF    = Signal(0x1d)
	SIGPWR     = Signal(0x13)
	SIGQUIT    = Signal(0x3)
	SIGSEGV    = Signal(0xb)
	SIGSTOP    = Signal(0x17)
	SIGSYS     = Signal(0xc)

	SIGPOLL   = Signal(0x1d)
	SIGPROF   = Signal(0x1b)
	SIGPWR    = Signal(0x1e)
	SIGQUIT   = Signal(0x3)
	SIGSEGV   = Signal(0xb)
	SIGSTKFLT = Signal(0x10)
	SIGSTOP   = Signal(0x13)
	SIGSYS    = Signal(0x1f)
	SIGTERM   = Signal(0xf)
	SIGTRAP   = Signal(0x5)
	SIGTSTP   = Signal(0x14)
	SIGTTIN   = Signal(0x15)
	SIGTTOU   = Signal(0x16)
	SIGUNUSED = Signal(0x1f)
	SIGURG    = Signal(0x17)

			// When apiserver is shutting down, signal clients to retry
			// There is a good chance the client hit a different server, so a tight retry is good for client responsiveness.
			waitGroupWriteRetryAfterToResponse(w)
			return
		}

		// attach ServerShutdownSignal to the watch request so that the
		// watch handler loop can return as soon as the server signals
		// that it is shutting down.

	SIGPIPE   = Signal(0xd)
	SIGPROF   = Signal(0x1b)
	SIGPWR    = Signal(0x20)
	SIGQUIT   = Signal(0x3)
	SIGSEGV   = Signal(0xb)
	SIGSTOP   = Signal(0x11)
	SIGSYS    = Signal(0xc)
	SIGTERM   = Signal(0xf)
	SIGTRAP   = Signal(0x5)
	SIGTSTP   = Signal(0x12)
	SIGTTIN   = Signal(0x15)
	SIGTTOU   = Signal(0x16)
	SIGURG    = Signal(0x10)
	SIGUSR1   = Signal(0x1e)
	SIGUSR2   = Signal(0x1f)