85 lines
1.2 KiB
C
85 lines
1.2 KiB
C
/*
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* Copyright (c) 2023 Ali Mashtizadeh
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* All rights reserved.
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*/
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#include <stdbool.h>
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#include <stdint.h>
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#include <string.h>
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#include <sys/cdefs.h>
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#include <sys/kassert.h>
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#include <sys/kconfig.h>
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#include <sys/kdebug.h>
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#include <sys/kmem.h>
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#include <sys/mp.h>
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#include <sys/queue.h>
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#include <sys/thread.h>
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#include <sys/spinlock.h>
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#include <sys/waitchannel.h>
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#include <sys/mutex.h>
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#include <sys/cv.h>
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#include <errno.h>
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void
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CV_Init(CV *cv, const char *name)
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{
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WaitChannel_Init(&cv->chan, name);
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return;
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}
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void
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CV_Destroy(CV *cv)
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{
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WaitChannel_Destroy(&cv->chan);
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return;
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}
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/**
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* CV_Wait --
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*
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* Wait to be woken up on a condition.
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*/
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void
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CV_Wait(CV *cv, Mutex *mtx)
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{
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/* Do not go to sleep holding a spinlock! */
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ASSERT(Critical_Level() == 0);
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WaitChannel_Lock(&cv->chan);
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Mutex_Unlock(mtx);
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WaitChannel_Sleep(&cv->chan);
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Mutex_Lock(mtx);
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return;
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}
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/**
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* CV_Signal --
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*
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* Wake a single thread waiting on the condition.
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*/
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void
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CV_Signal(CV *cv)
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{
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WaitChannel_Wake(&cv->chan);
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return;
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}
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/**
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* CV_Broadcast --
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*
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* Wake all threads waiting on the condition.
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*/
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void
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CV_Broadcast(CV *cv)
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{
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WaitChannel_WakeAll(&cv->chan);
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return;
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}
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