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76 lines
2.0 KiB
C
76 lines
2.0 KiB
C
#pragma once
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/*
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* This file is part of open_agb_firm
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* Copyright (C) 2021 derrek, profi200
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdint.h>
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#include "kernel.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/**
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* @brief Creates a new kernel semaphore.
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*
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* @param[in] count The initial count of the semaphore.
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*
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* @return The KHandle of the semaphore or NULL on error.
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*/
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KHandle createSemaphore(int32_t count);
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/**
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* @brief Deletes a kernel semaphore.
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*
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* @param[in] ksema The KHandle of the semaphore.
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*/
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void deleteSemaphore(KHandle const ksema);
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/**
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* @brief Polls a kernel semaphore.
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*
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* @param[in] ksema The KHandle of the semaphore.
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*
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* @return Returns KRES_OK or KRES_WOULD_BLOCK.
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*/
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KRes pollSemaphore(KHandle const ksema);
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/**
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* @brief Decreases the kernel semaphore and blocks if <=0.
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*
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* @param[in] ksema The KHandle of the semaphore.
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*
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* @return Returns the result. See Kres in kernel.h.
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*/
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KRes waitForSemaphore(KHandle const ksema);
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/**
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* @brief Increases the kernel semaphore and wakes up signalCount waiting tasks if any.
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*
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* @param[in] ksema The KHandle of the semaphore.
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* @param[in] signalCount The number of tasks to wake up..
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* @param[in] reschedule Set to true to immediately reschedule.
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*/
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void signalSemaphore(KHandle const ksema, uint32_t signalCount, bool reschedule);
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#ifdef __cplusplus
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} // extern "C"
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#endif |