* impedence matching:
*/
#ifdef CMINUSMINUS
+#define BLOCK_BEGIN
+#define BLOCK_END
#define DECLARE_IPTR(info) W_ info
#define FCALL foreign "C"
#define INFO_PTR(info) info
#define ARG_PTR "ptr"
#else
+#define BLOCK_BEGIN {
+#define BLOCK_END }
#define DECLARE_IPTR(info) const StgInfoTable *(info)
#define FCALL /* nothing */
#define INFO_PTR(info) &info
/* UPD_IND actually does a PERM_IND if TICKY_TICKY is on;
if you *really* need an IND use UPD_REAL_IND
*/
-#define UPD_REAL_IND(updclosure, ind_info, heapptr, and_then) \
- DECLARE_IPTR(info); \
- info = GET_INFO(updclosure); \
- AWAKEN_BQ(info,updclosure); \
- updateWithIndirection(GET_INFO(updclosure), ind_info, \
- updclosure, \
- heapptr, \
- and_then);
+#define UPD_REAL_IND(updclosure, ind_info, heapptr, and_then) \
+ BLOCK_BEGIN \
+ DECLARE_IPTR(info); \
+ info = GET_INFO(updclosure); \
+ updateWithIndirection(ind_info, \
+ updclosure, \
+ heapptr, \
+ and_then); \
+ BLOCK_END
#if defined(PROFILING) || defined(TICKY_TICKY)
#define UPD_PERM_IND(updclosure, heapptr) \
- DECLARE_IPTR(info); \
- info = GET_INFO(updclosure); \
- AWAKEN_BQ(info,updclosure); \
- updateWithPermIndirection(info, \
- updclosure, \
- heapptr);
+ BLOCK_BEGIN \
+ updateWithPermIndirection(updclosure, \
+ heapptr); \
+ BLOCK_END
#endif
#if defined(RTS_SUPPORTS_THREADS)
# ifdef TICKY_TICKY
# define UPD_IND_NOLOCK(updclosure, heapptr) \
- DECLARE_IPTR(info); \
- info = GET_INFO(updclosure); \
- AWAKEN_BQ_NOLOCK(info,updclosure); \
- updateWithPermIndirection(info, \
- updclosure, \
- heapptr)
+ BLOCK_BEGIN \
+ updateWithPermIndirection(updclosure, \
+ heapptr); \
+ BLOCK_END
# else
# define UPD_IND_NOLOCK(updclosure, heapptr) \
- DECLARE_IPTR(info); \
- info = GET_INFO(updclosure); \
- AWAKEN_BQ_NOLOCK(info,updclosure); \
- updateWithIndirection(info, INFO_PTR(stg_IND_info), \
+ BLOCK_BEGIN \
+ updateWithIndirection(INFO_PTR(stg_IND_info), \
updclosure, \
- heapptr,);
+ heapptr,); \
+ BLOCK_END
# endif
#else
DO_AWAKEN_BQ(((StgBlockingQueue *)closure)->blocking_queue, closure); \
}
-
-#else /* !GRAN && !PAR */
-
-#define DO_AWAKEN_BQ(closure) \
- FCALL awakenBlockedQueue(StgBlockingQueue_blocking_queue(closure) ARG_PTR);
-
-#define AWAKEN_BQ(info,closure) \
- if (info == INFO_PTR(stg_BLACKHOLE_BQ_info)) { \
- DO_AWAKEN_BQ(closure); \
- }
-
-#define AWAKEN_STATIC_BQ(info,closure) \
- if (info == INFO_PTR(stg_BLACKHOLE_BQ_STATIC_info)) { \
- DO_AWAKEN_BQ(closure); \
- }
-
-#ifdef RTS_SUPPORTS_THREADS
-#define DO_AWAKEN_BQ_NOLOCK(closure) \
- FCALL awakenBlockedQueueNoLock(StgBlockingQueue_blocking_queue(closure) ARG_PTR);
-
-#define AWAKEN_BQ_NOLOCK(info,closure) \
- if (info == INFO_PTR(stg_BLACKHOLE_BQ_info)) { \
- DO_AWAKEN_BQ_NOLOCK(closure); \
- }
-#endif
#endif /* GRAN || PAR */
+
/* -----------------------------------------------------------------------------
Updates: lower-level macros which update a closure with an
indirection to another closure.
* to point to itself, and the closure being updated should not
* already have been updated (the mutable list will get messed up
* otherwise).
+ *
+ * NB. We do *not* do this in SMP mode, because when we have the
+ * possibility of multiple threads entering the same closure, zeroing
+ * the slop in one of the threads would have a disastrous effect on
+ * the other (seen in the wild!).
*/
-#if !defined(DEBUG)
+#if !defined(DEBUG) || defined(SMP)
#define DEBUG_FILL_SLOP(p) /* nothing */
#ifdef CMINUSMINUS
-#define DEBUG_FILL_SLOP(p) \
- W_ inf; \
- W_ np; \
- W_ nw; \
- W_ i; \
- inf = %GET_STD_INFO(p); \
- np = TO_W_(%INFO_PTRS(inf)); \
- nw = TO_W_(%INFO_NPTRS(inf)); \
- if (%INFO_TYPE(inf) != THUNK_SELECTOR::I16) { \
- i = 0; \
- for: \
- if (i < np + nw) { \
- StgClosure_payload(p,i) = 0; \
- i = i + 1; \
- goto for; \
- } \
- }
-
+#define DEBUG_FILL_SLOP(p) \
+ W_ inf; \
+ W_ sz; \
+ W_ i; \
+ inf = %GET_STD_INFO(p); \
+ if (%INFO_TYPE(inf) == HALF_W_(THUNK_SELECTOR)) { \
+ StgThunk_payload(p,0) = 0; \
+ } else { \
+ if (%INFO_TYPE(inf) != HALF_W_(BLACKHOLE)) { \
+ if (%INFO_TYPE(inf) == HALF_W_(AP_STACK)) { \
+ sz = StgAP_STACK_size(p) + BYTES_TO_WDS(SIZEOF_StgAP_STACK_NoHdr); \
+ } else { \
+ sz = TO_W_(%INFO_PTRS(inf)) + TO_W_(%INFO_NPTRS(inf)); \
+ } \
+ i = 0; \
+ for: \
+ if (i < sz) { \
+ StgThunk_payload(p,i) = 0; \
+ i = i + 1; \
+ goto for; \
+ } \
+ } }
#else /* !CMINUSMINUS */
DEBUG_FILL_SLOP(StgClosure *p)
{
StgInfoTable *inf = get_itbl(p);
- nat np = inf->layout.payload.ptrs,
- nw = inf->layout.payload.nptrs, i;
- if (inf->type != THUNK_SELECTOR) {
- for (i = 0; i < np + nw; i++) {
- ((StgClosure *)p)->payload[i] = 0;
- }
+ nat i, sz;
+
+ switch (inf->type) {
+ case BLACKHOLE:
+ return;
+ case AP_STACK:
+ sz = ((StgAP_STACK *)p)->size + sizeofW(StgAP_STACK) - sizeofW(StgHeader);
+ break;
+ case THUNK_SELECTOR:
+#ifdef SMP
+ ((StgSelector *)p)->selectee = 0;
+#endif
+ return;
+ default:
+ sz = inf->layout.payload.ptrs + inf->layout.payload.nptrs;
+ break;
+ }
+ for (i = 0; i < sz; i++) {
+ ((StgThunk *)p)->payload[i] = 0;
}
}
*/
#ifdef CMINUSMINUS
#define generation(n) (W_[generations] + n*SIZEOF_generation)
-#define updateWithIndirection(info, ind_info, p1, p2, and_then) \
+#define updateWithIndirection(ind_info, p1, p2, and_then) \
W_ bd; \
\
/* ASSERT( p1 != p2 && !closure_IND(p1) ); \
*/ LDV_RECORD_DEAD_FILL_SLOP_DYNAMIC(p1); \
- bd = Bdescr(p1); \
- if (bdescr_gen_no(bd) == 0) { \
+/* foreign "C" cas(p1 "ptr", 0, stg_WHITEHOLE_info); \
+ */ bd = Bdescr(p1); \
+ if (bdescr_gen_no(bd) == 0 :: CInt) { \
StgInd_indirectee(p1) = p2; \
SET_INFO(p1, ind_info); \
LDV_RECORD_CREATE(p1); \
TICK_UPD_NEW_IND(); \
and_then; \
} else { \
- if (info != stg_BLACKHOLE_BQ_info) { \
- DEBUG_FILL_SLOP(p1); \
- W_ __mut_once_list; \
- __mut_once_list = generation(bdescr_gen_no(bd)) + \
- OFFSET_generation_mut_once_list; \
- StgMutClosure_mut_link(p1) = W_[__mut_once_list]; \
- W_[__mut_once_list] = p1; \
- } \
+ DEBUG_FILL_SLOP(p1); \
+ foreign "C" recordMutableGenLock(p1 "ptr", \
+ generation(TO_W_(bdescr_gen_no(bd))) "ptr"); \
StgInd_indirectee(p1) = p2; \
SET_INFO(p1, stg_IND_OLDGEN_info); \
LDV_RECORD_CREATE(p1); \
and_then; \
}
#else
-#define updateWithIndirection(_info, ind_info, p1, p2, and_then) \
+#define updateWithIndirection(ind_info, p1, p2, and_then) \
{ \
bdescr *bd; \
\
+ /* cas(p1, 0, &stg_WHITEHOLE_info); */ \
ASSERT( (P_)p1 != (P_)p2 && !closure_IND(p1) ); \
LDV_RECORD_DEAD_FILL_SLOP_DYNAMIC(p1); \
bd = Bdescr((P_)p1); \
TICK_UPD_NEW_IND(); \
and_then; \
} else { \
- if (_info != &stg_BLACKHOLE_BQ_info) { \
- DEBUG_FILL_SLOP(p1); \
- ((StgIndOldGen *)p1)->mut_link = generations[bd->gen_no].mut_once_list; \
- generations[bd->gen_no].mut_once_list = (StgMutClosure *)p1; \
- } \
- ((StgIndOldGen *)p1)->indirectee = p2; \
+ DEBUG_FILL_SLOP(p1); \
+ recordMutableGenLock(p1, &generations[bd->gen_no]); \
+ ((StgInd *)p1)->indirectee = p2; \
SET_INFO(p1, &stg_IND_OLDGEN_info); \
TICK_UPD_OLD_IND(); \
and_then; \
*/
#ifndef CMINUSMINUS
INLINE_HEADER void
-updateWithPermIndirection(const StgInfoTable *info,
- StgClosure *p1,
+updateWithPermIndirection(StgClosure *p1,
StgClosure *p2)
{
bdescr *bd;
ASSERT( p1 != p2 && !closure_IND(p1) );
- // @LDV profiling
- // Destroy the old closure.
- // Nb: LDV_* stuff cannot mix with ticky-ticky
+ /*
+ * @LDV profiling
+ * Destroy the old closure.
+ * Nb: LDV_* stuff cannot mix with ticky-ticky
+ */
LDV_RECORD_DEAD_FILL_SLOP_DYNAMIC(p1);
bd = Bdescr((P_)p1);
if (bd->gen_no == 0) {
((StgInd *)p1)->indirectee = p2;
SET_INFO(p1, &stg_IND_PERM_info);
- // @LDV profiling
- // We have just created a new closure.
+ /*
+ * @LDV profiling
+ * We have just created a new closure.
+ */
LDV_RECORD_CREATE(p1);
TICK_UPD_NEW_PERM_IND(p1);
} else {
- if (info != &stg_BLACKHOLE_BQ_info) {
- ((StgIndOldGen *)p1)->mut_link = generations[bd->gen_no].mut_once_list;
- generations[bd->gen_no].mut_once_list = (StgMutClosure *)p1;
- }
- ((StgIndOldGen *)p1)->indirectee = p2;
+ recordMutableGenLock(p1, &generations[bd->gen_no]);
+ ((StgInd *)p1)->indirectee = p2;
SET_INFO(p1, &stg_IND_OLDGEN_PERM_info);
- // @LDV profiling
- // We have just created a new closure.
+ /*
+ * @LDV profiling
+ * We have just created a new closure.
+ */
LDV_RECORD_CREATE(p1);
TICK_UPD_OLD_PERM_IND();
}
projects / ghc-hetmet.git / blobdiff