1 files changed, 145 insertions, 0 deletions
diff --git a/tests/errno1.c b/tests/errno1.c
new file mode 100644
index 0000000..983b37c
--- /dev/null
+++ b/tests/errno1.c
@@ -0,0 +1,145 @@
+/*
+ * File: errn1.c
+ *
+ * Test Synopsis: Test thread-safety of errno
+ * - 
+ *
+ * Test Method (Validation or Falsification):
+ * - Validation
+ *
+ * Requirements Tested:
+ * - 
+ *
+ * Features Tested:
+ * - 
+ *
+ * Cases Tested:
+ * - 
+ *
+ * Description:
+ * - 
+ *
+ * Environment:
+ * - 
+ *
+ * Input:
+ * - None.
+ *
+ * Output:
+ * - File name, Line number, and failed expression on failure.
+ * - No output on success.
+ *
+ * Assumptions:
+ * - 
+ *
+ * Pass Criteria:
+ * - Process returns zero exit status.
+ *
+ * Fail Criteria:
+ * - Process returns non-zero exit status.
+ */
+
+#include "test.h"
+
+/*
+ * Create NUMTHREADS threads in addition to the Main thread.
+ */
+enum {
+  NUMTHREADS = 3
+};
+
+typedef struct bag_t_ bag_t;
+struct bag_t_ {
+  int threadnum;
+  int started;
+  /* Add more per-thread state variables here */
+};
+
+static bag_t threadbag[NUMTHREADS + 1];
+
+pthread_mutex_t stop_here = PTHREAD_MUTEX_INITIALIZER;
+
+void *
+mythread(void * arg)
+{
+  bag_t * bag = (bag_t *) arg;
+
+  assert(bag == &threadbag[bag->threadnum]);
+  assert(bag->started == 0);
+  bag->started = 1;
+
+  errno = bag->threadnum;
+
+  Sleep(1000);
+
+  pthread_mutex_lock(&stop_here);
+
+  assert(errno == bag->threadnum);
+
+  pthread_mutex_unlock(&stop_here);
+
+  Sleep(1000);
+
+  return 0;
+}
+
+int
+main()
+{
+  int failed = 0;
+  int i;
+  pthread_t t[NUMTHREADS + 1];
+
+  pthread_mutex_lock(&stop_here);
+  errno = 0;
+
+  assert((t[0] = pthread_self()) != NULL);
+
+  for (i = 1; i <= NUMTHREADS; i++)
+    {
+      threadbag[i].started = 0;
+      threadbag[i].threadnum = i;
+      assert(pthread_create(&t[i], NULL, mythread, (void *) &threadbag[i]) == 0);
+    }
+
+  /*
+   * Code to control or munipulate child threads should probably go here.
+   */
+  Sleep(2000);
+  pthread_mutex_unlock(&stop_here);
+
+  /*
+   * Give threads time to run.
+   */
+  Sleep(NUMTHREADS * 1000);
+
+  /*
+   * Standard check that all threads started.
+   */
+  for (i = 1; i <= NUMTHREADS; i++)
+    { 
+      failed = !threadbag[i].started;
+
+      if (failed)
+	{
+	  fprintf(stderr, "Thread %d: started %d\n", i, threadbag[i].started);
+	}
+    }
+
+  assert(!failed);
+
+  /*
+   * Check any results here. Set "failed" and only print ouput on failure.
+   */
+  for (i = 1; i <= NUMTHREADS; i++)
+    { 
+      /* ... */
+    }
+
+  assert(!failed);
+
+  /*
+   * Success.
+   */
+  return 0;
+}