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/* -----------------------------------------------------------------------------
* $Id: SchedAPI.h,v 1.12 2000/12/04 12:31:20 simonmar Exp $
*
* (c) The GHC Team 1998
*
* External API for the scheduler. For most uses, the functions in
* RtsAPI.h should be enough.
*
* ---------------------------------------------------------------------------*/
#ifndef SCHEDAPI_H
#define SCHEDAPI_H
#if defined(GRAN)
// Dummy def for NO_PRI if not in GranSim
#define NO_PRI 0
#endif
/*
* schedule() plus the thread creation functions are not part
* part of the external RTS API, so leave them out if we're
* not compiling rts/ bits. -- sof 7/99
*
*/
SchedulerStatus waitThread(StgTSO *main_thread, /*out*/StgClosure **ret);
/*
* Creating threads
*/
#if defined(GRAN)
StgTSO *createThread(nat stack_size, StgInt pri);
#else
StgTSO *createThread(nat stack_size);
#endif
void scheduleThread(StgTSO *tso);
static inline void pushClosure (StgTSO *tso, StgClosure *c) {
tso->sp--;
tso->sp[0] = (W_) c;
}
static inline void pushRealWorld (StgTSO *tso) {
tso->sp--;
tso->sp[0] = (W_) REALWORLD_TAG;
}
static inline StgTSO *
createGenThread(nat stack_size, StgClosure *closure) {
StgTSO *t;
#if defined(GRAN)
t = createThread(stack_size, NO_PRI);
#else
t = createThread(stack_size);
#endif
pushClosure(t,closure);
return t;
}
static inline StgTSO *
createIOThread(nat stack_size, StgClosure *closure) {
StgTSO *t;
#if defined(GRAN)
t = createThread(stack_size, NO_PRI);
#else
t = createThread(stack_size);
#endif
pushRealWorld(t);
pushClosure(t,closure);
return t;
}
/*
* Same as above, but also evaluate the result of the IO action
* to whnf while we're at it.
*/
static inline StgTSO *
createStrictIOThread(nat stack_size, StgClosure *closure) {
StgTSO *t;
#if defined(GRAN)
t = createThread(stack_size, NO_PRI);
#else
t = createThread(stack_size);
#endif
pushClosure(t,closure);
pushClosure(t,(StgClosure*)&stg_forceIO_closure);
return t;
}
/*
* Killing threads
*/
extern void deleteThread(StgTSO *tso);
extern void deleteAllThreads ( void );
extern int howManyThreadsAvail ( void );
/*
* Run until there are no more threads.
*/
extern void finishAllThreads ( void );
/*
* Reverting CAFs
*/
extern void RevertCAFs ( void );
#endif
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