1 files changed, 139 insertions, 0 deletions
diff --git a/gdb/testsuite/gdb.threads/forking-threads-plus-breakpoint.c b/gdb/testsuite/gdb.threads/forking-threads-plus-breakpoint.c
new file mode 100644
index 0000000..a6ff0fd
--- /dev/null
+++ b/gdb/testsuite/gdb.threads/forking-threads-plus-breakpoint.c
@@ -0,0 +1,139 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2015 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 3 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, see <http://www.gnu.org/licenses/>.  */
+
+#include <assert.h>
+#include <pthread.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+
+/* Number of threads.  Each thread continuously spawns a fork and wait
+   for it.  If we have another thread continuously start a step over,
+   gdbserver should end up finding new forks while suspending
+   threads.  */
+#define NTHREADS 10
+
+pthread_t threads[NTHREADS];
+
+pthread_barrier_t barrier;
+
+#define NFORKS 10
+
+/* Used to create a conditional breakpoint that always fails.  */
+volatile int zero;
+
+static void *
+thread_forks (void *arg)
+{
+  int i;
+
+  pthread_barrier_wait (&barrier);
+
+  for (i = 0; i < NFORKS; i++)
+    {
+      pid_t pid;
+
+      pid = fork ();
+
+      if (pid > 0)
+	{
+	  int status;
+
+	  /* Parent.  */
+	  pid = waitpid (pid, &status, 0);
+	  if (pid == -1)
+	    {
+	      perror ("wait");
+	      exit (1);
+	    }
+
+	  if (!WIFEXITED (status))
+	    {
+	      printf ("Unexpected wait status 0x%x from child %d\n",
+		      status, pid);
+	    }
+	}
+      else if (pid == 0)
+	{
+	  /* Child.  */
+	  exit (0);
+	}
+      else
+	{
+	  perror ("fork");
+	  exit (1);
+	}
+    }
+}
+
+/* Set this to tell the thread_breakpoint thread to exit.  */
+volatile int break_out;
+
+static void *
+thread_breakpoint (void *arg)
+{
+  pthread_barrier_wait (&barrier);
+
+  while (!break_out)
+    {
+      usleep (1); /* set break here */
+    }
+
+  return NULL;
+}
+
+pthread_barrier_t barrier;
+
+int
+main (void)
+{
+  int i;
+  int ret;
+  pthread_t bp_thread;
+
+  /* Don't run forever.  */
+  alarm (180);
+
+  pthread_barrier_init (&barrier, NULL, NTHREADS + 1);
+
+  /* Start the threads that constantly fork.  */
+  for (i = 0; i < NTHREADS; i++)
+    {
+      ret = pthread_create (&threads[i], NULL, thread_forks, NULL);
+      assert (ret == 0);
+    }
+
+  /* Start the thread that constantly hit a conditional breakpoint
+     that needs to be stepped over.  */
+  ret = pthread_create (&bp_thread, NULL, thread_breakpoint, NULL);
+  assert (ret == 0);
+
+  /* Wait for forking to stop.  */
+  for (i = 0; i < NTHREADS; i++)
+    {
+      ret = pthread_join (threads[i], NULL);
+      assert (ret == 0);
+    }
+
+  break_out = 1;
+  pthread_join (bp_thread, NULL);
+  assert (ret == 0);
+
+  return 0;
+}