Imported Upstream version 0.13.2+dsfg1

deps/w32-pthreads/tests/spin4.c

@@ -0,0 +1,103 @@
+/* 
+ * spin4.c
+ *
+ *
+ * --------------------------------------------------------------------------
+ *
+ *      Pthreads-win32 - POSIX Threads Library for Win32
+ *      Copyright(C) 1998 John E. Bossom
+ *      Copyright(C) 1999,2005 Pthreads-win32 contributors
+ * 
+ *      Contact Email: rpj@callisto.canberra.edu.au
+ * 
+ *      The current list of contributors is contained
+ *      in the file CONTRIBUTORS included with the source
+ *      code distribution. The list can also be seen at the
+ *      following World Wide Web location:
+ *      http://sources.redhat.com/pthreads-win32/contributors.html
+ * 
+ *      This 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 of the License, or (at your option) any later version.
+ * 
+ *      This 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 this library in the file COPYING.LIB;
+ *      if not, write to the Free Software Foundation, Inc.,
+ *      51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ *
+ * --------------------------------------------------------------------------
+ *
+ * Declare a static spinlock object, lock it, spin on it, 
+ * and then unlock it again.
+ */
+
+#include "test.h"
+#include <sys/timeb.h>
+ 
+pthread_spinlock_t lock = PTHREAD_SPINLOCK_INITIALIZER;
+PTW32_STRUCT_TIMEB currSysTimeStart;
+PTW32_STRUCT_TIMEB currSysTimeStop;
+
+#define GetDurationMilliSecs(_TStart, _TStop) ((_TStop.time*1000+_TStop.millitm) \
+					       - (_TStart.time*1000+_TStart.millitm))
+
+static int washere = 0;
+
+void * func(void * arg)
+{
+  PTW32_FTIME(&currSysTimeStart);
+  washere = 1;
+  assert(pthread_spin_lock(&lock) == 0);
+  assert(pthread_spin_unlock(&lock) == 0);
+  PTW32_FTIME(&currSysTimeStop);
+
+  return (void *)(size_t)GetDurationMilliSecs(currSysTimeStart, currSysTimeStop);
+}
+ 
+int
+main()
+{
+  void* result = (void*)0;
+  pthread_t t;
+  int CPUs;
+  PTW32_STRUCT_TIMEB sysTime;
+
+  if ((CPUs = pthread_num_processors_np()) == 1)
+    {
+      printf("Test not run - it requires multiple CPUs.\n");
+	exit(0);
+    }
+
+  assert(pthread_spin_lock(&lock) == 0);
+
+  assert(pthread_create(&t, NULL, func, NULL) == 0);
+
+  while (washere == 0)
+    {
+      sched_yield();
+    }
+
+  do
+    {
+      sched_yield();
+      PTW32_FTIME(&sysTime);
+    }
+  while (GetDurationMilliSecs(currSysTimeStart, sysTime) <= 1000);
+
+  assert(pthread_spin_unlock(&lock) == 0);
+
+  assert(pthread_join(t, &result) == 0);
+  assert((int)(size_t)result > 1000);
+
+  assert(pthread_spin_destroy(&lock) == 0);
+
+  assert(washere == 1);
+
+  return 0;
+}