1 files changed, 0 insertions, 116 deletions
diff --git a/manual/examples/swapcontext.c b/manual/examples/swapcontext.c
deleted file mode 100644
index 3747230c31..0000000000
--- a/manual/examples/swapcontext.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/* Complete Context Control
-   Copyright (C) 1991-2017 Free Software Foundation, Inc.
-
-   This program is free software; you can redistribute it and/or
-   modify it under the terms of the GNU General Public License
-   as published by the Free Software Foundation; either version 2
-   of the License, or (at your option) any later version.
-
-   This program 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 for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, if not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <ucontext.h>
-#include <sys/time.h>
-
-/* Set by the signal handler.  */
-static volatile int expired;
-
-/* The contexts.  */
-static ucontext_t uc[3];
-
-/* We do only a certain number of switches.  */
-static int switches;
-
-
-/* This is the function doing the work.  It is just a
-   skeleton, real code has to be filled in.  */
-static void
-f (int n)
-{
-  int m = 0;
-  while (1)
-    {
-      /* This is where the work would be done.  */
-      if (++m % 100 == 0)
-        {
-          putchar ('.');
-          fflush (stdout);
-        }
-
-      /* Regularly the @var{expire} variable must be checked.  */
-      if (expired)
-        {
-          /* We do not want the program to run forever.  */
-          if (++switches == 20)
-            return;
-
-          printf ("\nswitching from %d to %d\n", n, 3 - n);
-          expired = 0;
-          /* Switch to the other context, saving the current one.  */
-          swapcontext (&uc[n], &uc[3 - n]);
-        }
-    }
-}
-
-/* This is the signal handler which simply set the variable.  */
-void
-handler (int signal)
-{
-  expired = 1;
-}
-
-
-int
-main (void)
-{
-  struct sigaction sa;
-  struct itimerval it;
-  char st1[8192];
-  char st2[8192];
-
-  /* Initialize the data structures for the interval timer.  */
-  sa.sa_flags = SA_RESTART;
-  sigfillset (&sa.sa_mask);
-  sa.sa_handler = handler;
-  it.it_interval.tv_sec = 0;
-  it.it_interval.tv_usec = 1;
-  it.it_value = it.it_interval;
-
-  /* Install the timer and get the context we can manipulate.  */
-  if (sigaction (SIGPROF, &sa, NULL) < 0
-      || setitimer (ITIMER_PROF, &it, NULL) < 0
-      || getcontext (&uc[1]) == -1
-      || getcontext (&uc[2]) == -1)
-    abort ();
-
-  /* Create a context with a separate stack which causes the
-     function @code{f} to be call with the parameter @code{1}.
-     Note that the @code{uc_link} points to the main context
-     which will cause the program to terminate once the function
-     return.  */
-  uc[1].uc_link = &uc[0];
-  uc[1].uc_stack.ss_sp = st1;
-  uc[1].uc_stack.ss_size = sizeof st1;
-  makecontext (&uc[1], (void (*) (void)) f, 1, 1);
-
-  /* Similarly, but @code{2} is passed as the parameter to @code{f}.  */
-  uc[2].uc_link = &uc[0];
-  uc[2].uc_stack.ss_sp = st2;
-  uc[2].uc_stack.ss_size = sizeof st2;
-  makecontext (&uc[2], (void (*) (void)) f, 1, 2);
-
-  /* Start running.  */
-  swapcontext (&uc[0], &uc[1]);
-  putchar ('\n');
-
-  return 0;
-}