Markus Armbruster
237baffca9
thread entrypoints: (lwpSelect, shutdown_sequence): Parameters didn't match thread entry point prototype. (lwpEntryPoint): Arguments didn't match thread entry point prototype. Change linkage of functions without prototype declaration to static where possible. Remove some superflous declarations, replace others by suitable includes.
104 lines
3.3 KiB
C
104 lines
3.3 KiB
C
/*
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* lwp.h -- prototypes and structures for lightweight processes
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* Copyright (C) 1991-3 Stephen Crane.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* author: Stephen Crane, (jsc@doc.ic.ac.uk), Department of Computing,
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* Imperial College of Science, Technology and Medicine, 180 Queen's
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* Gate, London SW7 2BZ, England.
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*/
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#ifndef _LWP_H_
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#define _LWP_H_
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#ifdef UCONTEXT
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#include <ucontext.h>
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#else /* UCONTEXT */
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#include <setjmp.h>
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#endif /* UCONTEXT */
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#include <sys/time.h>
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#include "misc.h"
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#define LWP_STACKCHECK 0x1
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#define LWP_PRINT 0x2
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/* process control block. do *not* change the position of context */
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struct lwpProc {
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#ifdef UCONTEXT
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ucontext_t context; /* context structure */
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#else /* UCONTEXT */
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jmp_buf context; /* processor context area */
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#endif /* UCONTEXT */
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void *sbtm; /* bottom of stack attached to it */
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int size; /* size of stack */
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void (*entry)(void *); /* entry point */
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int dead; /* whether the process can be rescheduled */
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int pri; /* which scheduling queue we're on */
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long runtime; /* time at which process is restarted */
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int fd; /* fd we're blocking on */
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int argc; /* initial arguments */
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char **argv;
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void *ud; /* user data */
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void *lowmark; /* start of low buffer around stack */
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void *himark; /* start of upper buffer around stack */
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char *name; /* process name and description */
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char *desc;
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int flags;
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struct lwpProc *next;
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};
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/* queue */
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struct lwpQueue {
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struct lwpProc *head;
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struct lwpProc *tail;
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};
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/* semaphore */
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struct lwpSem {
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int count;
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struct lwpQueue q;
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char *name;
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};
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#define LWP_FD_READ 0x1
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#define LWP_FD_WRITE 0x2
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#define LWP_MAX_PRIO 8
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struct lwpProc *lwpInitSystem(int prio, char **ctxp, int flags);
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struct lwpProc *lwpCreate(int prio, void (*)(void *), int size,
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int flags, char *name, char *desc,
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int argc, char **argv, void *ud);
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void lwpExit(void);
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void lwpTerminate(struct lwpProc * p);
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void lwpYield(void);
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void lwpSleepFd(int fd, int flags);
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void lwpSleepUntil(long until);
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void lwpWakeupFd(struct lwpProc * p);
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void *lwpGetUD(struct lwpProc * p);
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void lwpSetUD(struct lwpProc * p, char *ud);
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void lwpSetDesc(struct lwpProc * p, char *name, char *desc);
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int lwpSetPriority(int prio);
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void lwpReschedule(void);
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struct lwpSem *lwpCreateSem(char *name, int count);
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void lwpSignal(struct lwpSem *);
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void lwpWait(struct lwpSem *);
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void lwpSelect(void *);
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void lwpStatus(struct lwpProc * proc, char *format, ...);
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extern struct lwpProc *LwpCurrent;
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#include "prototypes.h" /* must come at end, after defines and typedefs */
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#endif /* _LWP_H_ */
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