/* -----------------------------------------------------------------------------
- * $Id: PrimOps.hc,v 1.64 2000/12/19 12:34:01 sewardj Exp $
+ * $Id: PrimOps.hc,v 1.73 2001/02/28 00:01:04 qrczak Exp $
*
* (c) The GHC Team, 1998-2000
*
classes CCallable and CReturnable don't really exist, but the
compiler insists on generating dictionaries containing references
to GHC_ZcCCallable_static_info etc., so we provide dummy symbols
- for these.
+ for these. Some C compilers can't cope with zero-length static arrays,
+ so we have to make these one element long.
*/
-W_ GHC_ZCCCallable_static_info[0];
-W_ GHC_ZCCReturnable_static_info[0];
-
-
+StgWord GHC_ZCCCallable_static_info[1];
+StgWord GHC_ZCCReturnable_static_info[1];
+
/* -----------------------------------------------------------------------------
Macros for Hand-written primitives.
-------------------------------------------------------------------------- */
if ( val < 0LL ) {
neg = 1;
val = -val;
- }
+ }
hi = (W_)((LW_)val / 0x100000000ULL);
if ( words_needed == 2 ) {
- s = 2;
+ s = 2;
Hp[-1] = (W_)val;
Hp[0] = hi;
} else if ( val != 0 ) {
val = mvar->value;
mvar->value = (StgClosure *)&stg_END_TSO_QUEUE_closure;
+ /* wake up the first thread on the queue
+ */
+ if (mvar->head != (StgTSO *)&stg_END_TSO_QUEUE_closure) {
+ ASSERT(mvar->head->why_blocked == BlockedOnMVar);
+#if defined(GRAN) || defined(PAR)
+ /* ToDo: check 2nd arg (mvar) is right */
+ mvar->head = RET_STGCALL2(StgTSO *,unblockOne,mvar->head,mvar);
+#else
+ mvar->head = RET_STGCALL1(StgTSO *,unblockOne,mvar->head);
+#endif
+ if (mvar->head == (StgTSO *)&stg_END_TSO_QUEUE_closure) {
+ mvar->tail = (StgTSO *)&stg_END_TSO_QUEUE_closure;
+ }
+ }
+
/* do this last... we might have locked the MVar in the SMP case,
* and writing the info pointer will unlock it.
*/
val = mvar->value;
mvar->value = (StgClosure *)&stg_END_TSO_QUEUE_closure;
+ /* wake up the first thread on the queue
+ */
+ if (mvar->head != (StgTSO *)&stg_END_TSO_QUEUE_closure) {
+ ASSERT(mvar->head->why_blocked == BlockedOnMVar);
+#if defined(GRAN) || defined(PAR)
+ /* ToDo: check 2nd arg (mvar) is right */
+ mvar->head = RET_STGCALL2(StgTSO *,unblockOne,mvar->head,mvar);
+#else
+ mvar->head = RET_STGCALL1(StgTSO *,unblockOne,mvar->head);
+#endif
+ if (mvar->head == (StgTSO *)&stg_END_TSO_QUEUE_closure) {
+ mvar->tail = (StgTSO *)&stg_END_TSO_QUEUE_closure;
+ }
+ }
+
/* do this last... we might have locked the MVar in the SMP case,
* and writing the info pointer will unlock it.
*/
#endif
if (info == &stg_FULL_MVAR_info) {
-#ifdef INTERPRETER
- fprintf(stderr, "fatal: put on a full MVar in Hugs; aborting\n" );
- exit(1);
-#else
- R1.cl = (StgClosure *)PutFullMVar_closure;
- JMP_(raisezh_fast);
+ if (mvar->head == (StgTSO *)&stg_END_TSO_QUEUE_closure) {
+ mvar->head = CurrentTSO;
+ } else {
+ mvar->tail->link = CurrentTSO;
+ }
+ CurrentTSO->link = (StgTSO *)&stg_END_TSO_QUEUE_closure;
+ CurrentTSO->why_blocked = BlockedOnMVar;
+ CurrentTSO->block_info.closure = (StgClosure *)mvar;
+ mvar->tail = CurrentTSO;
+
+#ifdef SMP
+ /* unlock the MVar */
+ mvar->header.info = &stg_FULL_MVAR_info;
#endif
+ BLOCK( R1_PTR | R2_PTR, putMVarzh_fast );
}
mvar->value = R2.cl;
*/
if (mvar->head != (StgTSO *)&stg_END_TSO_QUEUE_closure) {
ASSERT(mvar->head->why_blocked == BlockedOnMVar);
-#if defined(GRAN)
- mvar->head = RET_STGCALL2(StgTSO *,unblockOne,mvar->head,mvar);
-#elif defined(PAR)
- // ToDo: check 2nd arg (mvar) is right
+#if defined(GRAN) || defined(PAR)
+ /* ToDo: check 2nd arg (mvar) is right */
mvar->head = RET_STGCALL2(StgTSO *,unblockOne,mvar->head,mvar);
#else
mvar->head = RET_STGCALL1(StgTSO *,unblockOne,mvar->head);
FE_
}
+FN_(tryPutMVarzh_fast)
+{
+ StgMVar *mvar;
+ const StgInfoTable *info;
+
+ FB_
+ /* args: R1 = MVar, R2 = value */
+
+ mvar = (StgMVar *)R1.p;
+
+#ifdef SMP
+ info = LOCK_CLOSURE(mvar);
+#else
+ info = GET_INFO(mvar);
+#endif
+
+ if (info == &stg_FULL_MVAR_info) {
+
+#ifdef SMP
+ /* unlock the MVar */
+ mvar->header.info = &stg_FULL_MVAR_info;
+#endif
+
+ /* HACK: we need a pointer to pass back, so we abuse NO_FINALIZER_closure */
+ RET_N(0);
+ }
+
+ mvar->value = R2.cl;
+
+ /* wake up the first thread on the queue, it will continue with the
+ * takeMVar operation and mark the MVar empty again.
+ */
+ if (mvar->head != (StgTSO *)&stg_END_TSO_QUEUE_closure) {
+ ASSERT(mvar->head->why_blocked == BlockedOnMVar);
+#if defined(GRAN) || defined(PAR)
+ /* ToDo: check 2nd arg (mvar) is right */
+ mvar->head = RET_STGCALL2(StgTSO *,unblockOne,mvar->head,mvar);
+#else
+ mvar->head = RET_STGCALL1(StgTSO *,unblockOne,mvar->head);
+#endif
+ if (mvar->head == (StgTSO *)&stg_END_TSO_QUEUE_closure) {
+ mvar->tail = (StgTSO *)&stg_END_TSO_QUEUE_closure;
+ }
+ }
+
+ /* unlocks the MVar in the SMP case */
+ SET_INFO(mvar,&stg_FULL_MVAR_info);
+
+ /* ToDo: yield here for better communication performance? */
+ RET_N(1);
+ FE_
+}
+
/* -----------------------------------------------------------------------------
Stable pointer primitives
------------------------------------------------------------------------- */
bco = (StgBCO *) (Hp + 1 - sizeofW(StgBCO));
SET_HDR(bco, &stg_BCO_info, CCCS);
- bco->instrs = R1.cl;
- bco->literals = R2.cl;
- bco->ptrs = R3.cl;
- bco->itbls = R4.cl;
+ bco->instrs = (StgArrWords*)R1.cl;
+ bco->literals = (StgArrWords*)R2.cl;
+ bco->ptrs = (StgMutArrPtrs*)R3.cl;
+ bco->itbls = (StgArrWords*)R4.cl;
TICK_RET_UNBOXED_TUP(1);
RET_P(bco);
FE_
}
+FN_(mkApUpd0zh_fast)
+{
+ /* R1.p = the fn for the AP_UPD
+ */
+ StgAP_UPD* ap;
+ FB_
+ HP_CHK_GEN_TICKY(AP_sizeW(0), R1_PTR, mkApUpd0zh_fast,);
+ TICK_ALLOC_PRIM(sizeofW(StgHeader), AP_sizeW(0)-sizeofW(StgHeader), 0);
+ CCS_ALLOC(CCCS,AP_sizeW(0)); /* ccs prof */
+ ap = (StgAP_UPD *) (Hp + 1 - AP_sizeW(0));
+ SET_HDR(ap, &stg_AP_UPD_info, CCCS);
+
+ ap->n_args = 0;
+ ap->fun = R1.cl;
+
+ TICK_RET_UNBOXED_TUP(1);
+ RET_P(ap);
+ FE_
+}
+
/* -----------------------------------------------------------------------------
Thread I/O blocking primitives
-------------------------------------------------------------------------- */
ACQUIRE_LOCK(&sched_mutex);
- target = (R1.i / (TICK_MILLISECS*1000)) + timestamp + ticks_since_timestamp;
+ target = (R1.i / (TICK_MILLISECS*1000)) + getourtimeofday();
CurrentTSO->block_info.target = target;
/* Insert the new thread in the sleeping queue. */
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