summaryrefslogtreecommitdiff
path: root/sched_yield.c
diff options
context:
space:
mode:
Diffstat (limited to 'sched_yield.c')
-rw-r--r--sched_yield.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/sched_yield.c b/sched_yield.c
new file mode 100644
index 0000000..6136444
--- /dev/null
+++ b/sched_yield.c
@@ -0,0 +1,71 @@
+/*
+ * sched_yield.c
+ *
+ * Description:
+ * POSIX thread functions that deal with thread scheduling.
+ *
+ * --------------------------------------------------------------------------
+ *
+ * Pthreads-win32 - POSIX Threads Library for Win32
+ * Copyright(C) 1998 John E. Bossom
+ * Copyright(C) 1999,2002 Pthreads-win32 contributors
+ *
+ * Contact Email: rpj@ise.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
+ */
+
+#include "pthread.h"
+#include "implement.h"
+#include "sched.h"
+
+int
+sched_yield(void)
+ /*
+ * ------------------------------------------------------
+ * DOCPUBLIC
+ * This function indicates that the calling thread is
+ * willing to give up some time slices to other threads.
+ *
+ * PARAMETERS
+ * N/A
+ *
+ *
+ * DESCRIPTION
+ * This function indicates that the calling thread is
+ * willing to give up some time slices to other threads.
+ * NOTE: Since this is part of POSIX 1003.1b
+ * (realtime extensions), it is defined as returning
+ * -1 if an error occurs and sets errno to the actual
+ * error.
+ *
+ * RESULTS
+ * 0 successfully created semaphore,
+ * ENOSYS sched_yield not supported,
+ *
+ * ------------------------------------------------------
+ */
+{
+ Sleep(0);
+
+ return 0;
+}