From 8586535eb7343c5f563a7f0a19abd0b269fa2fcd Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Thu, 8 Dec 2016 09:28:49 -0600
Subject: [PATCH] examples/ostest:  Extend the pthread cancellation test to
 exercise pthread_cleanup_push() (and pthread_cleanup_pop() indirectly via
 pthread_cancel() and pthread_exit()

---
 examples/ostest/cancel.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/examples/ostest/cancel.c b/examples/ostest/cancel.c
index 73b214955..0aad378d5 100644
--- a/examples/ostest/cancel.c
+++ b/examples/ostest/cancel.c
@@ -33,19 +33,40 @@
  *
  ****************************************************************************/
 
+#include <nuttx/config.h>
+
 #include <stdio.h>
 #include <time.h>
 #include <pthread.h>
 #include <errno.h>
+
 #include "ostest.h"
 
 static pthread_mutex_t mutex;
 static pthread_cond_t  cond;
 
-static void *thread_waiter(void *parameter)
+#ifdef CONFIG_PTHREAD_CLEANUP
+static void thread_cleaner(FAR void *arg)
+{
+  printf("thread_cleaner #%u\n", (unsigned int)((uintptr_t)arg));
+}
+#endif
+
+static FAR void *thread_waiter(FAR void *parameter)
 {
   int status;
 
+#ifdef CONFIG_PTHREAD_CLEANUP
+  int i;
+
+  /* Register some clean-up handlers */
+
+  for (i = 0; i < CONFIG_PTHREAD_CLEANUP_STACKSIZE ; i++)
+    {
+      pthread_cleanup_push(thread_cleaner, (FAR void *)((uintptr_t)(i+1)));
+    }
+#endif
+
   /* Take the mutex */
 
   printf("thread_waiter: Taking mutex\n");