diff options
Diffstat (limited to 'os/hal/osal/nil/osal.c')
| -rw-r--r-- | os/hal/osal/nil/osal.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/os/hal/osal/nil/osal.c b/os/hal/osal/nil/osal.c new file mode 100644 index 000000000..d2927bc12 --- /dev/null +++ b/os/hal/osal/nil/osal.c @@ -0,0 +1,118 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+ 2011,2012,2013 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file osal.c
+ * @brief OSAL module code.
+ *
+ * @addtogroup OSAL
+ * @{
+ */
+
+#include "osal.h"
+
+/*===========================================================================*/
+/* Module local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module exported variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module local types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module local variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module local functions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Dequeues and wakes up one thread from the queue, if any.
+ *
+ * @param[in] tqp pointer to the threads queue object
+ * @param[in] msg the message code
+ *
+ * @iclass
+ */
+void osalThreadDequeueNextI(threads_queue_t *tqp, msg_t msg) {
+ semaphore_t *sp = &tqp->sem;
+
+ if (chSemGetCounterI(&tqp->sem) < 0) {
+ thread_reference_t tr = nil.threads;
+ while (true) {
+ /* Is this thread waiting on this semaphore?*/
+ if (tr->u1.semp == sp) {
+ sp->cnt++;
+
+ chDbgAssert(NIL_THD_IS_WTSEM(tr), "not waiting");
+
+ chSchReadyI(tr, msg);
+ return;
+ }
+ tr++;
+
+ chDbgAssert(tr < &nil.threads[NIL_CFG_NUM_THREADS],
+ "pointer out of range");
+ }
+ }
+}
+
+/**
+ * @brief Dequeues and wakes up all threads from the queue.
+ *
+ * @param[in] tqp pointer to the threads queue object
+ * @param[in] msg the message code
+ *
+ * @iclass
+ */
+void osalThreadDequeueAllI(threads_queue_t *tqp, msg_t msg) {
+ semaphore_t *sp = &tqp->sem;
+ thread_reference_t tr;
+ cnt_t cnt;
+
+ cnt = sp->cnt;
+ sp->cnt = 0;
+ tr = nil.threads;
+ while (cnt < 0) {
+ /* Is this thread waiting on this semaphore?*/
+ if (tr->u1.semp == sp) {
+
+ chDbgAssert(NIL_THD_IS_WTSEM(tr), "not waiting");
+
+ cnt++;
+ chSchReadyI(tr, msg);
+ }
+ tr++;
+
+ chDbgAssert(tr < &nil.threads[NIL_CFG_NUM_THREADS],
+ "pointer out of range");
+ }
+}
+
+/** @} */
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