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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
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Diffstat (limited to 'pthreads/tests/spin4.c')
-rw-r--r--pthreads/tests/spin4.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/pthreads/tests/spin4.c b/pthreads/tests/spin4.c
new file mode 100644
index 000000000..8386d0956
--- /dev/null
+++ b/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.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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;
+struct _timeb currSysTimeStart;
+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)
+{
+ _ftime(&currSysTimeStart);
+ washere = 1;
+ assert(pthread_spin_lock(&lock) == 0);
+ assert(pthread_spin_unlock(&lock) == 0);
+ _ftime(&currSysTimeStop);
+
+ return (void *) GetDurationMilliSecs(currSysTimeStart, currSysTimeStop);
+}
+
+int
+main()
+{
+ long result = 0;
+ pthread_t t;
+ int CPUs;
+ 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();
+ _ftime(&sysTime);
+ }
+ while (GetDurationMilliSecs(currSysTimeStart, sysTime) <= 1000);
+
+ assert(pthread_spin_unlock(&lock) == 0);
+
+ assert(pthread_join(t, (void **) &result) == 0);
+ assert(result > 1000);
+
+ assert(pthread_spin_destroy(&lock) == 0);
+
+ assert(washere == 1);
+
+ return 0;
+}