Enrico Fraccaroli
40 lines
959 B
C
40 lines
959 B
C
/// MentOS, The Mentoring Operating system project
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/// @file sem.h
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/// @brief Definition of structure for managing semaphores.
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/// @copyright (c) 2014-2021 This file is distributed under the MIT License.
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/// See LICENSE.md for details.
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#pragma once
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#include "sys/types.h"
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#include "stddef.h"
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#include "time.h"
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#include "ipc.h"
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/// @brief Buffer to use with the semaphore IPC.
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struct sembuf {
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/// Semaphore index in array.
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unsigned short sem_num;
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/// Semaphore operation.
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short sem_op;
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/// Operation flags.
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short sem_flg;
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};
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#ifdef __KERNEL__
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long sys_semget(key_t key, int nsems, int semflg);
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long sys_semop(int semid, struct sembuf *sops, unsigned nsops);
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long sys_semctl(int semid, int semnum, int cmd, unsigned long arg);
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#else
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long semget(key_t key, int nsems, int semflg);
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long semop(int semid, struct sembuf *sops, unsigned nsops);
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long semctl(int semid, int semnum, int cmd, unsigned long arg);
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#endif |