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fixed a gc flaw upon rtx disposal

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This commit is contained in:
hyung-hwan 2020-03-24 15:26:00 +00:00
parent 962b1d47dd
commit 404c382e33
2 changed files with 57 additions and 26 deletions
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13
hawk/lib/run.c
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@ -1239,13 +1239,7 @@ static void fini_rtx (hawk_rtx_t* rtx, int fini_globals)
hawk_ooecs_fini (&rtx->inrec.linew); hawk_ooecs_fini (&rtx->inrec.linew);
hawk_ooecs_fini (&rtx->inrec.line); hawk_ooecs_fini (&rtx->inrec.line);
if (fini_globals) if (fini_globals) refdown_globals (rtx, 1);
{
refdown_globals (rtx, 1);
#if defined(HAWK_ENABLE_GC)
hawk_rtx_gc (rtx);
#endif
}
/* destroy the stack if necessary */ /* destroy the stack if necessary */
if (rtx->stack) if (rtx->stack)
@ -1262,6 +1256,11 @@ static void fini_rtx (hawk_rtx_t* rtx, int fini_globals)
/* destroy named variables */ /* destroy named variables */
hawk_htb_close (rtx->named); hawk_htb_close (rtx->named);
#if defined(HAWK_ENABLE_GC)
/* collect garbage after having released global variables and named global variables */
hawk_rtx_gc (rtx);
#endif
/* destroy values in free list */ /* destroy values in free list */
while (rtx->rcache_count > 0) while (rtx->rcache_count > 0)
{ {

68
hawk/lib/val.c
View File

@ -106,6 +106,8 @@ BEGIN {
*/ */
/*#define DEBUG_GC*/
#define GCH_MOVED HAWK_TYPE_MAX(hawk_uintptr_t) #define GCH_MOVED HAWK_TYPE_MAX(hawk_uintptr_t)
#define GCH_UNREACHABLE (GCH_MOVED - 1) #define GCH_UNREACHABLE (GCH_MOVED - 1)
@ -134,6 +136,8 @@ static HAWK_INLINE void gc_chain_val (hawk_gch_t* list, hawk_val_t* v)
static HAWK_INLINE void gc_move_all_gchs (hawk_gch_t* src, hawk_gch_t* dst) static HAWK_INLINE void gc_move_all_gchs (hawk_gch_t* src, hawk_gch_t* dst)
{ {
#if 0
/* move src to dst */
if (src->gc_next != src) if (src->gc_next != src)
{ {
dst->gc_next = src->gc_next; dst->gc_next = src->gc_next;
@ -149,6 +153,21 @@ static HAWK_INLINE void gc_move_all_gchs (hawk_gch_t* src, hawk_gch_t* dst)
src->gc_prev = src; src->gc_prev = src;
src->gc_next = src; src->gc_next = src;
#else
/* append src to dst */
if (src->gc_next != src)
{
hawk_gch_t* last;
last = dst->gc_prev;
last->gc_next = src->gc_next;
last->gc_next->gc_prev = last;
dst->gc_prev = src->gc_prev;
dst->gc_prev->gc_next = dst;
}
src->gc_prev = src;
src->gc_next = src;
#endif
} }
static HAWK_INLINE void gc_unchain_gch (hawk_gch_t* gch) static HAWK_INLINE void gc_unchain_gch (hawk_gch_t* gch)
@ -208,10 +227,10 @@ static void gc_dump_refs (hawk_rtx_t* rtx, hawk_gch_t* list)
gch = list->gc_next; gch = list->gc_next;
while (gch != list) while (gch != list)
{ {
printf (" %p %d\n", gch, (int)gch->gc_refs); hawk_logbfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, "[GC] GCH %p gc_refs %d\n", gch, (int)gch->gc_refs);
gch = gch->gc_next; gch = gch->gc_next;
} }
printf ("-----all_count => %d---------\n", (int)rtx->gc.all_count); hawk_logbfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, "[GC] all_count => %d\n", (int)rtx->gc.all_count);
} }
static void gc_move_reachables (hawk_gch_t* list, hawk_gch_t* reachable_list) static void gc_move_reachables (hawk_gch_t* list, hawk_gch_t* reachable_list)
@ -276,7 +295,9 @@ static void gc_free_unreachables (hawk_rtx_t* rtx, hawk_gch_t* list)
while (gch != list) while (gch != list)
{ {
gch->gc_refs = GCH_UNREACHABLE; gch->gc_refs = GCH_UNREACHABLE;
//printf (">>>MARKED UNREACHABLE %p\n", gch); #if defined(DEBUG_GC)
hawk_logbfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, "[GC] MARKED UNREACHABLE GCH %p\n", gch);
#endif
gch = gch->gc_next; gch = gch->gc_next;
} }
@ -294,10 +315,12 @@ static void gc_free_unreachables (hawk_rtx_t* rtx, hawk_gch_t* list)
{ {
gch = list->gc_next; /* the first entry in the list */ gch = list->gc_next; /* the first entry in the list */
#if defined(DEBUG_GC)
hawk_logbfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, "[GC] FREEING UNREACHABLE GCH %p gc_refs %zu v_refs %zu\n", gch, gch->gc_refs, hawk_gch_to_val(gch)->v_refs);
#endif
/* do what hawk_rtx_freeval() would do without -9999 */ /* do what hawk_rtx_freeval() would do without -9999 */
rtx->gc.all_count--; rtx->gc.all_count--;
gc_unchain_gch (gch); gc_unchain_gch (gch);
//printf ("^^^^^^^^^^^ freeing %p gc_refs %d v_refs %d\n", gch, (int)gch->gc_refs, (int)hawk_gch_to_val(gch)->v_refs);
hawk_rtx_freemem (rtx, gch); hawk_rtx_freemem (rtx, gch);
} }
} }
@ -306,7 +329,9 @@ void hawk_rtx_gc (hawk_rtx_t* rtx)
{ {
hawk_gch_t reachable; hawk_gch_t reachable;
//printf ("collecting garbage...\n"); #if defined(DEBUG_GC)
hawk_logbfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, "[GC] **started**\n");
#endif
gc_trace_refs (&rtx->gc.all); gc_trace_refs (&rtx->gc.all);
reachable.gc_prev = &reachable; reachable.gc_prev = &reachable;
@ -322,7 +347,9 @@ void hawk_rtx_gc (hawk_rtx_t* rtx)
/* move all reachables back to the main list */ /* move all reachables back to the main list */
gc_move_all_gchs (&reachable, &rtx->gc.all); gc_move_all_gchs (&reachable, &rtx->gc.all);
//printf ("collecting garbage.done ..\n"); #if defined(DEBUG_GC)
hawk_logbfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, "[GC] **ended**\n");
#endif
} }
#endif #endif
@ -394,7 +421,7 @@ hawk_val_t* hawk_rtx_makeintval (hawk_rtx_t* rtx, hawk_int_t v)
val->nde = HAWK_NULL; val->nde = HAWK_NULL;
#if defined(DEBUG_VAL) #if defined(DEBUG_VAL)
hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_T("makeintval => %jd [%p] - [%O]\n"), (hawk_intmax_t)v, val, val); hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, HAWK_T("makeintval => %jd [%p] - [%O]\n"), (hawk_intmax_t)v, val, val);
#endif #endif
return (hawk_val_t*)val; return (hawk_val_t*)val;
} }
@ -433,7 +460,7 @@ hawk_val_t* hawk_rtx_makefltval (hawk_rtx_t* rtx, hawk_flt_t v)
val->nde = HAWK_NULL; val->nde = HAWK_NULL;
#if defined(DEBUG_VAL) #if defined(DEBUG_VAL)
hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_T("makefltval => %Lf [%p] - [%O]\n"), (double)v, val, val); hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, HAWK_T("makefltval => %Lf [%p] - [%O]\n"), (double)v, val, val);
#endif #endif
return (hawk_val_t*)val; return (hawk_val_t*)val;
} }
@ -479,7 +506,7 @@ init:
val->val.ptr[val->val.len] = '\0'; val->val.ptr[val->val.len] = '\0';
#if defined(DEBUG_VAL) #if defined(DEBUG_VAL)
hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_T("make_str_val => %p - [%O]\n"), val, val); hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, HAWK_T("make_str_val => %p - [%O]\n"), val, val);
#endif #endif
return (hawk_val_t*)val; return (hawk_val_t*)val;
} }
@ -813,7 +840,7 @@ static void free_mapval (hawk_map_t* map, void* dptr, hawk_oow_t dlen)
hawk_val_t* v = (hawk_val_t*)dptr; hawk_val_t* v = (hawk_val_t*)dptr;
#if defined(DEBUG_VAL) #if defined(DEBUG_VAL)
hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_T("refdown in map free - [%O]\n"), v); hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, HAWK_T("refdown in map free - [%O]\n"), v);
#endif #endif
#if defined(HAWK_ENABLE_GC) #if defined(HAWK_ENABLE_GC)
@ -833,7 +860,7 @@ static void same_mapval (hawk_map_t* map, void* dptr, hawk_oow_t dlen)
{ {
hawk_rtx_t* run = *(hawk_rtx_t**)hawk_map_getxtn(map); hawk_rtx_t* run = *(hawk_rtx_t**)hawk_map_getxtn(map);
#if defined(DEBUG_VAL) #if defined(DEBUG_VAL)
hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_T("refdown nofree in map free - [%O]\n"), dptr); hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, HAWK_T("refdown nofree in map free - [%O]\n"), dptr);
#endif #endif
hawk_rtx_refdownval_nofree (run, dptr); hawk_rtx_refdownval_nofree (run, dptr);
} }
@ -890,7 +917,9 @@ hawk_rtx_gc(rtx);
gc_chain_val (&rtx->gc.all, (hawk_val_t*)val); gc_chain_val (&rtx->gc.all, (hawk_val_t*)val);
rtx->gc.all_count++; rtx->gc.all_count++;
val->v_gc = 1; val->v_gc = 1;
//printf ("MADE GCH %p VAL %p\n", hawk_val_to_gch(val), val); #if defined(DEBUG_GC)
hawk_logbfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, "[GC] MADE GCH %p VAL %p\n", hawk_val_to_gch(val), val);
#endif
#endif #endif
return (hawk_val_t*)val; return (hawk_val_t*)val;
@ -1106,7 +1135,7 @@ void hawk_rtx_freeval (hawk_rtx_t* rtx, hawk_val_t* val, int cache)
if (IS_STATICVAL(val)) return; if (IS_STATICVAL(val)) return;
#if defined(DEBUG_VAL) #if defined(DEBUG_VAL)
hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_T("freeing [cache=%d] - [%O]\n"), cache, val); hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, HAWK_T("freeing [cache=%d] - [%O]\n"), cache, val);
#endif #endif
vtype = HAWK_RTX_GETVALTYPE (rtx, val); vtype = HAWK_RTX_GETVALTYPE (rtx, val);
@ -1202,7 +1231,10 @@ void hawk_rtx_freeval (hawk_rtx_t* rtx, hawk_val_t* val, int cache)
case HAWK_VAL_MAP: case HAWK_VAL_MAP:
#if defined(HAWK_ENABLE_GC) #if defined(HAWK_ENABLE_GC)
//printf ("FREEING GCH %p VAL %p\n", hawk_val_to_gch(val), val);
#if defined(DEBUG_GC)
hawk_logbfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, "[GC] FREEING GCH %p VAL %p - flags %d\n", hawk_val_to_gch(val), val, cache);
#endif
hawk_map_fini (((hawk_val_map_t*)val)->map); hawk_map_fini (((hawk_val_map_t*)val)->map);
if (cache != -9999) if (cache != -9999)
@ -1235,7 +1267,7 @@ void hawk_rtx_refupval (hawk_rtx_t* rtx, hawk_val_t* val)
if (IS_STATICVAL(val)) return; if (IS_STATICVAL(val)) return;
#if defined(DEBUG_VAL) #if defined(DEBUG_VAL)
hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_T("ref up [ptr=%p] [count=%d] - [%O]\n"), val, (int)val->v_refs, val); hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, HAWK_T("ref up [ptr=%p] [count=%d] - [%O]\n"), val, (int)val->v_refs, val);
#endif #endif
val->v_refs++; val->v_refs++;
} }
@ -1248,7 +1280,7 @@ void hawk_rtx_refdownval (hawk_rtx_t* rtx, hawk_val_t* val)
if (IS_STATICVAL(val)) return; if (IS_STATICVAL(val)) return;
#if defined(DEBUG_VAL) #if defined(DEBUG_VAL)
hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_T("ref down [ptr=%p] [count=%d] - [%O]\n"), val, (int)val->v_refs, val); hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, HAWK_T("ref down [ptr=%p] [count=%d] - [%O]\n"), val, (int)val->v_refs, val);
#endif #endif
/* the reference count of a value should be greater than zero for it to be decremented. check the source code for any bugs */ /* the reference count of a value should be greater than zero for it to be decremented. check the source code for any bugs */
@ -1797,7 +1829,7 @@ int hawk_rtx_valtostr (hawk_rtx_t* rtx, const hawk_val_t* v, hawk_rtx_valtostr_o
default: default:
invalid: invalid:
#if defined(DEBUG_VAL) #if defined(DEBUG_VAL)
hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_T(">>WRONG VALUE TYPE [%d] in hawk_rtx_valtostr\n"), v->type); hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, HAWK_T(">>WRONG VALUE TYPE [%d] in hawk_rtx_valtostr\n"), v->type);
#endif #endif
hawk_rtx_seterrnum (rtx, HAWK_NULL, HAWK_EVALTOSTR); hawk_rtx_seterrnum (rtx, HAWK_NULL, HAWK_EVALTOSTR);
return -1; return -1;
@ -2227,7 +2259,7 @@ hawk_int_t hawk_rtx_hashval (hawk_rtx_t* rtx, hawk_val_t* v)
default: default:
#if defined(DEBUG_VAL) #if defined(DEBUG_VAL)
hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_T(">>WRONG VALUE TYPE [%d] in hawk_rtx_hashval()\n"), v->type); hawk_logfmt (hawk_rtx_gethawk(rtx), HAWK_LOG_STDERR, HAWK_T(">>WRONG VALUE TYPE [%d] in hawk_rtx_hashval()\n"), v->type);
#endif #endif
hawk_rtx_seterrnum (rtx, HAWK_NULL, HAWK_EHASHVAL); hawk_rtx_seterrnum (rtx, HAWK_NULL, HAWK_EHASHVAL);
return -1; return -1;