1 files changed, 86 insertions, 0 deletions
diff --git a/sysdeps/pthread/eintr.c b/sysdeps/pthread/eintr.c
new file mode 100644
index 0000000000..99a03e0957
--- /dev/null
+++ b/sysdeps/pthread/eintr.c
@@ -0,0 +1,86 @@
+/* Copyright (C) 2003-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <pthread.h>
+#include <signal.h>
+#include <unistd.h>
+#include <support/xthread.h>
+#include <support/xsignal.h>
+#include <support/xthread.h>
+
+
+static int the_sig;
+
+
+static void
+eintr_handler (int sig)
+{
+  if (sig != the_sig)
+    {
+      write (STDOUT_FILENO, "eintr_handler: signal number wrong\n", 35);
+      _exit (1);
+    }
+  write (STDOUT_FILENO, ".", 1);
+}
+
+
+static void *
+eintr_source (void *arg)
+{
+  struct timespec ts = { .tv_sec = 0, .tv_nsec = 500000 };
+
+  if (arg == NULL)
+    {
+      sigset_t ss;
+      sigemptyset (&ss);
+      sigaddset (&ss, the_sig);
+      xpthread_sigmask (SIG_BLOCK, &ss, NULL);
+    }
+
+  while (1)
+    {
+      if (arg != NULL)
+	pthread_kill (*(pthread_t *) arg, the_sig);
+      else
+	kill (getpid (), the_sig);
+
+      nanosleep (&ts, NULL);
+    }
+
+  /* NOTREACHED */
+  return NULL;
+}
+
+
+static void
+setup_eintr (int sig, pthread_t *thp)
+{
+  struct sigaction sa;
+  sigemptyset (&sa.sa_mask);
+  sa.sa_flags = 0;
+  sa.sa_handler = eintr_handler;
+  if (sigaction (sig, &sa, NULL) != 0)
+    {
+      puts ("setup_eintr: sigaction failed");
+      exit (1);
+    }
+  the_sig = sig;
+
+  /* Create the thread which will fire off the signals.  */
+  xpthread_create (NULL, eintr_source, thp);
+}