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-rw-r--r--pthreads/pthread_setschedparam.c125
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diff --git a/pthreads/pthread_setschedparam.c b/pthreads/pthread_setschedparam.c
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+/*
+ * sched_setschedparam.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) 1999,2005 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
+ */
+
+#include "pthread.h"
+#include "implement.h"
+#include "sched.h"
+
+int
+pthread_setschedparam (pthread_t thread, int policy,
+ const struct sched_param *param)
+{
+ int result;
+
+ /* Validate the thread id. */
+ result = pthread_kill (thread, 0);
+ if (0 != result)
+ {
+ return result;
+ }
+
+ /* Validate the scheduling policy. */
+ if (policy < SCHED_MIN || policy > SCHED_MAX)
+ {
+ return EINVAL;
+ }
+
+ /* Ensure the policy is SCHED_OTHER. */
+ if (policy != SCHED_OTHER)
+ {
+ return ENOTSUP;
+ }
+
+ return (ptw32_setthreadpriority (thread, policy, param->sched_priority));
+}
+
+
+int
+ptw32_setthreadpriority (pthread_t thread, int policy, int priority)
+{
+ int prio;
+ int result;
+ ptw32_thread_t * tp = (ptw32_thread_t *) thread.p;
+
+ prio = priority;
+
+ /* Validate priority level. */
+ if (prio < sched_get_priority_min (policy) ||
+ prio > sched_get_priority_max (policy))
+ {
+ return EINVAL;
+ }
+
+#if (THREAD_PRIORITY_LOWEST > THREAD_PRIORITY_NORMAL)
+/* WinCE */
+#else
+/* Everything else */
+
+ if (THREAD_PRIORITY_IDLE < prio && THREAD_PRIORITY_LOWEST > prio)
+ {
+ prio = THREAD_PRIORITY_LOWEST;
+ }
+ else if (THREAD_PRIORITY_TIME_CRITICAL > prio
+ && THREAD_PRIORITY_HIGHEST < prio)
+ {
+ prio = THREAD_PRIORITY_HIGHEST;
+ }
+
+#endif
+
+ result = pthread_mutex_lock (&tp->threadLock);
+
+ if (0 == result)
+ {
+ /* If this fails, the current priority is unchanged. */
+ if (0 == SetThreadPriority (tp->threadH, prio))
+ {
+ result = EINVAL;
+ }
+ else
+ {
+ /*
+ * Must record the thread's sched_priority as given,
+ * not as finally adjusted.
+ */
+ tp->sched_priority = priority;
+ }
+
+ (void) pthread_mutex_unlock (&tp->threadLock);
+ }
+
+ return result;
+}