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/* |
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* Copyright (c) 2021 joshua stein <jcs@jcs.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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|
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#include <setjmp.h> |
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|
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#ifndef __UTHREAD_H__ |
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#define __UTHREAD_H__ |
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|
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#define NUM_UTHREADS 6 |
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|
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enum { |
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UTHREAD_STATE_DEAD, |
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UTHREAD_STATE_SETUP, |
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UTHREAD_STATE_RUNNING, |
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UTHREAD_STATE_YIELDING, |
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UTHREAD_STATE_SLEEPING, |
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UTHREAD_STATE_REPEAT |
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}; |
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|
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enum { |
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UTHREAD_SETJMP_DEFAULT, |
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UTHREAD_SETJMP_YIELDED |
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}; |
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|
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struct uthread { |
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short state; |
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short id; |
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jmp_buf env; |
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void (*func)(struct uthread *, void *); |
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void *arg; |
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unsigned long sleeping_until; |
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unsigned long stack_loc; |
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unsigned long stack_gap; |
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}; |
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|
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extern struct uthread *uthread_current; |
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extern unsigned long uthread_ApplLimit; |
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|
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void uthread_init(void); |
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struct uthread *uthread_add(void *func, void *arg); |
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void uthread_yield(void); |
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void uthread_coordinate(void); |
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void uthread_msleep(unsigned long millis); |
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void uthread_wakeup(struct uthread *uthread); |
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void uthread_verify(void); |
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|
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#endif /* __UTHREAD_H__ */ |