/* -----------------------------------------------------------------------------
- * $Id: GCCompact.c,v 1.13 2002/12/11 15:36:42 simonmar Exp $
*
* (c) The GHC Team 2001
*
#include "MBlock.h"
#include "GCCompact.h"
#include "Schedule.h"
-#include "StablePriv.h"
#include "Apply.h"
+// Turn off inlining when debugging - it obfuscates things
+#ifdef DEBUG
+# undef STATIC_INLINE
+# define STATIC_INLINE static
+#endif
+
/* -----------------------------------------------------------------------------
Threading / unthreading pointers.
except for the info pointer.
-------------------------------------------------------------------------- */
-static inline void
+STATIC_INLINE void
thread( StgPtr p )
{
StgPtr q = (StgPtr)*p;
}
}
-static inline void
+STATIC_INLINE void
unthread( StgPtr p, StgPtr free )
{
- StgPtr q = (StgPtr)*p, r;
+ StgWord q = *p, r;
- while (((StgWord)q & 1) != 0) {
- (StgWord)q -= 1; // unset the low bit again
- r = (StgPtr)*q;
- *q = (StgWord)free;
+ while ((q & 1) != 0) {
+ q -= 1; // unset the low bit again
+ r = *((StgPtr)q);
+ *((StgPtr)q) = (StgWord)free;
q = r;
}
- *p = (StgWord)q;
+ *p = q;
}
-static inline StgInfoTable *
+STATIC_INLINE StgInfoTable *
get_threaded_info( StgPtr p )
{
StgPtr q = (P_)GET_INFO((StgClosure *)p);
// A word-aligned memmove will be faster for small objects than libc's or gcc's.
// Remember, the two regions *might* overlap, but: to <= from.
-static inline void
+STATIC_INLINE void
move(StgPtr to, StgPtr from, nat size)
{
for(; size > 0; --size) {
}
}
-static inline nat
+STATIC_INLINE nat
obj_sizeW( StgClosure *p, StgInfoTable *info )
{
switch (info->type) {
return mut_arr_ptrs_sizeW((StgMutArrPtrs*)p);
case TSO:
return tso_sizeW((StgTSO *)p);
+ case BCO:
+ return bco_sizeW((StgBCO *)p);
default:
return sizeW_fromITBL(info);
}
}
}
-static inline void
+STATIC_INLINE void
thread_large_bitmap( StgPtr p, StgLargeBitmap *large_bitmap, nat size )
{
nat i, b;
}
}
-static inline StgPtr
+STATIC_INLINE StgPtr
thread_arg_block (StgFunInfoTable *fun_info, StgClosure **args)
{
StgPtr p;
nat size;
p = (StgPtr)args;
- switch (fun_info->fun_type) {
+ switch (fun_info->f.fun_type) {
case ARG_GEN:
- bitmap = BITMAP_BITS(fun_info->bitmap);
- size = BITMAP_SIZE(fun_info->bitmap);
+ bitmap = BITMAP_BITS(fun_info->f.bitmap);
+ size = BITMAP_SIZE(fun_info->f.bitmap);
goto small_bitmap;
case ARG_GEN_BIG:
- size = ((StgLargeBitmap *)fun_info->bitmap)->size;
- thread_large_bitmap(p, (StgLargeBitmap *)fun_info->bitmap, size);
+ size = ((StgLargeBitmap *)fun_info->f.bitmap)->size;
+ thread_large_bitmap(p, (StgLargeBitmap *)fun_info->f.bitmap, size);
p += size;
break;
default:
- bitmap = BITMAP_BITS(stg_arg_bitmaps[fun_info->fun_type]);
- size = BITMAP_SIZE(stg_arg_bitmaps[fun_info->fun_type]);
+ bitmap = BITMAP_BITS(stg_arg_bitmaps[fun_info->f.fun_type]);
+ size = BITMAP_SIZE(stg_arg_bitmaps[fun_info->f.fun_type]);
small_bitmap:
while (size > 0) {
if ((bitmap & 1) == 0) {
dyn = ((StgRetDyn *)p)->liveness;
// traverse the bitmap first
- bitmap = GET_LIVENESS(dyn);
+ bitmap = RET_DYN_LIVENESS(dyn);
p = (P_)&((StgRetDyn *)p)->payload[0];
- size = RET_DYN_SIZE;
+ size = RET_DYN_BITMAP_SIZE;
while (size > 0) {
if ((bitmap & 1) == 0) {
thread(p);
}
// skip over the non-ptr words
- p += GET_NONPTRS(dyn);
+ p += RET_DYN_NONPTRS(dyn) + RET_DYN_NONPTR_REGS_SIZE;
// follow the ptr words
- for (size = GET_PTRS(dyn); size > 0; size--) {
+ for (size = RET_DYN_PTRS(dyn); size > 0; size--) {
thread(p);
p++;
}
nat size;
p++;
- thread(p);
bco = (StgBCO *)*p;
+ thread(p);
p++;
size = BCO_BITMAP_SIZE(bco);
thread_large_bitmap(p, BCO_BITMAP(bco), size);
StgRetFun *ret_fun = (StgRetFun *)p;
StgFunInfoTable *fun_info;
- fun_info = get_fun_itbl(ret_fun->fun); // *before* threading it!
+ fun_info = itbl_to_fun_itbl(
+ get_threaded_info((StgPtr)ret_fun->fun));
+ // *before* threading it!
thread((StgPtr)&ret_fun->fun);
p = thread_arg_block(fun_info, ret_fun->payload);
continue;
}
}
-static inline StgPtr
+STATIC_INLINE StgPtr
thread_PAP (StgPAP *pap)
{
StgPtr p;
StgWord bitmap, size;
StgFunInfoTable *fun_info;
- thread((StgPtr)&pap->fun);
- fun_info = get_fun_itbl(pap->fun);
+ fun_info = itbl_to_fun_itbl(get_threaded_info((StgPtr)pap->fun));
ASSERT(fun_info->i.type != PAP);
p = (StgPtr)pap->payload;
size = pap->n_args;
- switch (fun_info->fun_type) {
+ switch (fun_info->f.fun_type) {
case ARG_GEN:
- bitmap = BITMAP_BITS(fun_info->bitmap);
+ bitmap = BITMAP_BITS(fun_info->f.bitmap);
goto small_bitmap;
case ARG_GEN_BIG:
- thread_large_bitmap(p, (StgLargeBitmap *)fun_info->bitmap, size);
+ thread_large_bitmap(p, (StgLargeBitmap *)fun_info->f.bitmap, size);
p += size;
break;
case ARG_BCO:
p += size;
break;
default:
- bitmap = BITMAP_BITS(stg_arg_bitmaps[fun_info->fun_type]);
+ bitmap = BITMAP_BITS(stg_arg_bitmaps[fun_info->f.fun_type]);
small_bitmap:
size = pap->n_args;
while (size > 0) {
}
break;
}
+
+ thread((StgPtr)&pap->fun);
return p;
}
-static inline StgPtr
+STATIC_INLINE StgPtr
thread_AP_STACK (StgAP_STACK *ap)
{
thread((StgPtr)&ap->fun);
}
}
-static inline StgPtr
+STATIC_INLINE StgPtr
thread_obj (StgInfoTable *info, StgPtr p)
{
switch (info->type) {
thread((StgPtr)&((StgClosure *)p)->payload[1]);
return p + sizeofW(StgHeader) + 2;
+ case BCO: {
+ StgBCO *bco = (StgBCO *)p;
+ thread((StgPtr)&bco->instrs);
+ thread((StgPtr)&bco->literals);
+ thread((StgPtr)&bco->ptrs);
+ thread((StgPtr)&bco->itbls);
+ return p + bco_sizeW(bco);
+ }
+
case FUN:
case THUNK:
case CONSTR:
case FOREIGN:
case STABLE_NAME:
- case BCO:
case IND_PERM:
case MUT_VAR:
case MUT_CONS:
default:
barf("update_fwd: unknown/strange object %d", (int)(info->type));
+ return NULL;
}
}
for (g = 0; g < RtsFlags.GcFlags.generations; g++) {
for (s = 0; s < generations[g].n_steps; s++) {
stp = &generations[g].steps[s];
- IF_DEBUG(gc, fprintf(stderr,"update_fwd: %d.%d\n", stp->gen->no, stp->no););
+ IF_DEBUG(gc, debugBelch("update_fwd: %d.%d\n", stp->gen->no, stp->no););
update_fwd(stp->to_blocks);
update_fwd_large(stp->scavenged_large_objects);
if (g == RtsFlags.GcFlags.generations-1 && stp->blocks != NULL) {
- IF_DEBUG(gc, fprintf(stderr,"update_fwd: %d.%d (compact)\n", stp->gen->no, stp->no););
+ IF_DEBUG(gc, debugBelch("update_fwd: %d.%d (compact)\n", stp->gen->no, stp->no););
update_fwd_compact(stp->blocks);
}
}
stp = &oldest_gen->steps[0];
if (stp->blocks != NULL) {
blocks = update_bkwd_compact(stp);
- IF_DEBUG(gc, fprintf(stderr,"update_bkwd: %d.%d (compact, old: %d blocks, now %d blocks)\n",
+ IF_DEBUG(gc, debugBelch("update_bkwd: %d.%d (compact, old: %d blocks, now %d blocks)\n",
stp->gen->no, stp->no,
stp->n_blocks, blocks););
stp->n_blocks = blocks;
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