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/* ml-mp.h
*
* COPYRIGHT (c) 1994 by AT&T Bell Laboratories.
*/
#ifndef _ML_MP_
#define _ML_MP_
/* The status of a virtual processor */
typedef enum {
MP_PROC_RUNNING, /* processor is running */
MP_PROC_SUSPENDED, /* processor is suspended */
MP_PROC_NO_PROC /* no processor allocated */
} vproc_status_t;
#ifdef MP_SUPPORT
#if !defined(SOFT_POLL) || !defined(MP_GCPOLL)
# error MP runtime currently requires polling support
#endif
/*** OS dependent stuff ***/
#if defined(OPSYS_IRIX5)
#include <sys/types.h>
#include <sys/prctl.h>
#include <unistd.h>
#include <ulocks.h>
typedef ulock_t mp_lock_t; /* A lock */
typedef barrier_t mp_barrier_t; /* A barrier */
typedef int mp_pid_t; /* A process id */
#else
# error MP not supported for this system
#endif
/*** Generic MP interface ***/
extern int MP_StartCollect(ml_state_t *);
extern void MP_FinishCollect(ml_state_t *,int);
extern ml_val_t *mpExtraRoots[];
extern void MP_SetLock (mp_lock_t lock);
extern void MP_UnsetLock (mp_lock_t lock);
extern bool_t MP_TryLock (mp_lock_t lock);
extern mp_lock_t MP_AllocLock ();
extern void MP_FreeLock (mp_lock_t lock);
extern mp_barrier_t *MP_AllocBarrier ();
extern void MP_FreeBarrier (mp_barrier_t *barrierp);
extern void MP_Barrier (mp_barrier_t *barrierp, unsigned n);
extern void MP_ResetBarrier (mp_barrier_t *barrierp);
extern mp_pid_t MP_ProcId (void);
extern int MP_MaxProcs ();
extern ml_val_t MP_AcquireProc (ml_state_t *msp, ml_val_t arg);
extern void MP_ReleaseProc (ml_state_t *msp);
extern int MP_ActiveProcs ();
extern void MP_Init (void);
extern void MP_Shutdown (void);
extern mp_lock_t MP_GCLock;
extern mp_lock_t MP_GCGenLock;
extern mp_lock_t MP_TimerLock;
extern mp_barrier_t *MP_GCBarrier;
#define BEGIN_CRITICAL_SECT(LOCK) { MP_SetLock(LOCK); {
#define END_CRITICAL_SECT(LOCK) } MP_UnsetLock(LOCK); }
#define ACQUIRE_LOCK(LOCK) MP_SetLock(LOCK);
#define RELEASE_LOCK(LOCK) MP_UnsetLock(LOCK);
#else /* !MP_SUPPORT */
#define BEGIN_CRITICAL_SECT(LOCK) {
#define END_CRITICAL_SECT(LOCK) }
#define ACQUIRE_LOCK(LOCK) /* no operation */
#define RELEASE_LOCK(LOCK) /* no operation */
#endif /* MP_SUPPORT */
#endif /* !_ML_MP_ */
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