Markus Armbruster
3a18d0b986
where it belongs. Code looks fishy. Untested. (initcontext, startpoint): Internal linkage.
86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
/*
|
|
* lwpint.h -- lwp internal structures
|
|
*
|
|
* Copyright (C) 1991-3 Stephen Crane.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the Free
|
|
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
* author: Stephen Crane, (jsc@doc.ic.ac.uk), Department of Computing,
|
|
* Imperial College of Science, Technology and Medicine, 180 Queen's
|
|
* Gate, London SW7 2BZ, England.
|
|
*/
|
|
#ifndef _LWPINT_H
|
|
#define _LWPINT_H
|
|
|
|
/* `liveness' counter: check signals every `n' visits to the scheduler */
|
|
/* note: the lower this value, the more responsive the system but the */
|
|
/* more inefficient the context switch time */
|
|
#define LCOUNT -1
|
|
|
|
#ifdef UCONTEXT
|
|
void lwpInitContext(struct lwpProc *, stack_t *);
|
|
#define lwpSave(x) getcontext(&(x))
|
|
#define lwpRestore(x) setcontext(&(x))
|
|
#else /* !UCONTEXT */
|
|
#if defined(hpux) && !defined(hpc)
|
|
void lwpInitContext(volatile struct lwpProc * volatile, void *);
|
|
#else
|
|
void lwpInitContext(struct lwpProc *, void *);
|
|
#endif
|
|
#if defined(hpc)
|
|
int lwpSave(jmp_buf);
|
|
#define lwpRestore(x) longjmp(x, 1)
|
|
#elif defined(hpux) || defined(AIX32) || defined(ALPHA)
|
|
int lwpSave(jmp_buf);
|
|
void lwpRestore(jmp_buf);
|
|
#elif defined(SUN4)
|
|
#define lwpSave(x) _setjmp(x)
|
|
#define lwpRestore(x) _longjmp(x, 1)
|
|
#else
|
|
#define lwpSave(x) setjmp(x)
|
|
#define lwpRestore(x) longjmp(x, 1)
|
|
#endif
|
|
#endif /* !UCONTEXT */
|
|
|
|
#ifdef AIX32
|
|
/* AIX needs 12 extra bytes above the stack; we add it here */
|
|
#define LWP_EXTRASTACK 3*sizeof(long)
|
|
#else
|
|
#define LWP_EXTRASTACK 0
|
|
#endif
|
|
|
|
#define LWP_REDZONE 1024 /* make this a multiple of 1024 */
|
|
|
|
/* XXX Note that this assumes sizeof(long) == 4 */
|
|
#define LWP_CHECKMARK 0x5a5a5a5aL
|
|
|
|
#ifdef hpux
|
|
typedef struct {
|
|
char x[64];
|
|
} stkalign_t;
|
|
#else
|
|
typedef double stkalign_t;
|
|
#endif
|
|
|
|
/* internal routines */
|
|
void lwpAddTail(struct lwpQueue *, struct lwpProc *);
|
|
struct lwpProc *lwpGetFirst(struct lwpQueue *);
|
|
void lwpReady(struct lwpProc *);
|
|
void lwpReschedule(void);
|
|
void lwpEntryPoint(void);
|
|
void lwpInitSelect(struct lwpProc * self);
|
|
void lwpDestroy(struct lwpProc * proc);
|
|
|
|
#endif /* _LWP_H */
|