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diff --git a/src/chcond.c b/src/chcond.c
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-/*
- ChibiOS/RT - Copyright (C) 2006-2007 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/>.
-*/
-/*
- Concepts and parts of this file are contributed by and Copyright (C) 2008
- of Leon Woestenberg.
- */
-
-/**
- * @file chcond.c
- * @brief Condition Variables code.
- * @addtogroup CondVars
- * @{
- */
-
-#include <ch.h>
-
-#if CH_USE_CONDVARS && CH_USE_MUTEXES
-
-/**
- * @brief Initializes s @p CondVar structure.
- *
- * @param[out] cp pointer to a @p CondVar structure
- * @note This function can be invoked from within an interrupt handler even if
- * it is not an I-Class API because it does not touch any critical kernel
- * data structure.
- */
-void chCondInit(CondVar *cp) {
-
- chDbgCheck(cp != NULL, "chCondInit");
-
- queue_init(&cp->c_queue);
-}
-
-/**
- * @brief Signals one thread that is waiting on the condition variable.
- *
- * @param[in] cp pointer to the @p CondVar structure
- */
-void chCondSignal(CondVar *cp) {
-
- chDbgCheck(cp != NULL, "chCondSignal");
-
- chSysLock();
- if (notempty(&cp->c_queue)) /* any thread ? */
- chSchWakeupS(fifo_remove(&cp->c_queue), RDY_OK);
- chSysUnlock();
-}
-
-/**
- * @brief Signals one thread that is waiting on the condition variable.
- *
- * @param[in] cp pointer to the @p CondVar structure
- */
-void chCondSignalI(CondVar *cp) {
-
- chDbgCheck(cp != NULL, "chCondSignalI");
-
- if (notempty(&cp->c_queue)) /* any thread ? */
- chSchReadyI(fifo_remove(&cp->c_queue))->p_rdymsg = RDY_OK;
-}
-
-/**
- * @brief Signals all threads that are waiting on the condition variable.
- *
- * @param[in] cp pointer to the @p CondVar structure
- */
-void chCondBroadcast(CondVar *cp) {
-
- chSysLock();
- chCondBroadcastI(cp);
- chSchRescheduleS();
- chSysUnlock();
-}
-
-/**
- * @brief Signals all threads that are waiting on the condition variable.
- *
- * @param[in] cp pointer to the @p CondVar structure
- */
-void chCondBroadcastI(CondVar *cp) {
-
- chDbgCheck(cp != NULL, "chCondBroadcastI");
-
- /* empties the condition variable queue and inserts all the Threads into the
- * ready list in FIFO order. The wakeup message is set to @p RDY_RESET in
- * order to make a chCondBroadcast() detectable from a chCondSignal(). */
- while (cp->c_queue.p_next != (void *)&cp->c_queue)
- chSchReadyI(fifo_remove(&cp->c_queue))->p_rdymsg = RDY_RESET;
-}
-
-/**
- * @brief Waits on the condition variable releasing the mutex lock.
- * @details Releases the mutex, waits on the condition variable, and finally
- * acquires the mutex again. This is done atomically.
- *
- * @param[in] cp pointer to the @p CondVar structure
- * @return The wakep mode.
- * @retval RDY_OK if the condvar was signaled using chCondSignal().
- * @retval RDY_RESET if the condvar was signaled using chCondBroadcast().
- * @note The thread MUST already have locked the mutex when calling
- * @p chCondWait().
- */
-msg_t chCondWait(CondVar *cp) {
- msg_t msg;
-
- chSysLock();
- msg = chCondWaitS(cp);
- chSysUnlock();
- return msg;
-}
-
-/**
- * @brief Waits on the condition variable releasing the mutex lock.
- * @details Releases the mutex, waits on the condition variable, and finally
- * acquires the mutex again. This is done atomically.
- *
- * @param[in] cp pointer to the @p CondVar structure
- * @return The wakep mode.
- * @retval RDY_OK if the condvar was signaled using chCondSignal().
- * @retval RDY_RESET if the condvar was signaled using chCondBroadcast().
- * @note The thread MUST already have locked the mutex when calling
- * @p chCondWaitS().
- */
-msg_t chCondWaitS(CondVar *cp) {
- Mutex *mp;
- msg_t msg;
-
- chDbgCheck(cp != NULL, "chCondWaitS");
- chDbgAssert(currp->p_mtxlist != NULL,
- "chCondWaitS(), #1",
- "not owning a mutex");
-
- mp = chMtxUnlockS(); /* unlocks the condvar mutex */
- prio_insert(currp, &cp->c_queue); /* enters the condvar queue */
- currp->p_wtcondp = cp; /* needed by the tracer */
- chSchGoSleepS(PRWTCOND); /* waits on the condvar */
- msg = currp->p_rdymsg; /* fetches the wakeup message */
- chMtxLockS(mp); /* atomically relocks the mutex */
- return msg; /* returns the wakeup message */
-}
-
-#if CH_USE_CONDVARS_TIMEOUT
-/**
- * @brief Waits on the condition variable releasing the mutex lock.
- * @details Releases the mutex, waits on the condition variable, and finally
- * acquires the mutex again. This is done atomically.
- *
- * @param[in] cp pointer to the @p CondVar structure
- * @param[in] time the number of ticks before the operation timeouts,
- * the special value @p TIME_INFINITE is allowed.
- * It is not possible to specify zero @p TIME_IMMEDIATE
- * as timeout specification because it would make no sense
- * in this function.
- * @return The wakep mode.
- * @retval RDY_OK if the condvar was signaled using chCondSignal().
- * @retval RDY_RESET if the condvar was signaled using chCondBroadcast().
- * @retval RDY_TIMEOUT if the condvar was not signaled within the specified
- * timeout.
- * @note The thread MUST already have locked the mutex when calling
- * @p chCondWaitTimeout().
- */
-msg_t chCondWaitTimeout(CondVar *cp, systime_t time) {
- msg_t msg;
-
- chSysLock();
- msg = chCondWaitTimeoutS(cp, time);
- chSysUnlock();
- return msg;
-}
-
-/**
- * @brief Waits on the condition variable releasing the mutex lock.
- * @details Releases the mutex, waits on the condition variable, and finally
- * acquires the mutex again. This is done atomically.
- *
- * @param[in] cp pointer to the @p CondVar structure
- * @param[in] time the number of ticks before the operation timeouts,
- * the special value @p TIME_INFINITE is allowed.
- * It is not possible to specify zero @p TIME_IMMEDIATE
- * as timeout specification because it would make no sense
- * in this function.
- * @return The wakep mode.
- * @retval RDY_OK if the condvar was signaled using chCondSignal().
- * @retval RDY_RESET if the condvar was signaled using chCondBroadcast().
- * @retval RDY_TIMEOUT if the condvar was not signaled within the specified
- * timeout.
- * @note The thread MUST already have locked the mutex when calling
- * @p chCondWaitTimeoutS().
- */
-msg_t chCondWaitTimeoutS(CondVar *cp, systime_t time) {
- Mutex *mp;
- msg_t msg;
-
- chDbgCheck(cp != NULL, "chCondWaitTimeoutS");
- chDbgAssert(currp->p_mtxlist != NULL,
- "chCondWaitTimeoutS(), #1",
- "not owning a mutex");
-
- mp = chMtxUnlockS(); /* unlocks the condvar mutex */
- prio_insert(currp, &cp->c_queue); /* enters the condvar queue */
- currp->p_wtcondp = cp; /* needed by the tracer */
- chSchGoSleepTimeoutS(PRWTCOND, time); /* waits on the condvar */
- msg = currp->p_rdymsg; /* fetches the wakeup message */
- chMtxLockS(mp); /* atomically relocks the mutex */
- return msg; /* returns the wakeup message */
-}
-#endif /* CH_USE_CONDVARS_TIMEOUT */
-
-#endif /* CH_USE_CONDVARS && CH_USE_MUTEXES */
-
-/** @} */
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