diff options
Diffstat (limited to 'libgo/runtime/mgc0.c')
| -rw-r--r-- | libgo/runtime/mgc0.c | 80 |
1 files changed, 77 insertions, 3 deletions
diff --git a/libgo/runtime/mgc0.c b/libgo/runtime/mgc0.c index 72feb1f..5ea456f 100644 --- a/libgo/runtime/mgc0.c +++ b/libgo/runtime/mgc0.c @@ -874,6 +874,81 @@ sweepspan(ParFor *desc, uint32 idx) } } +static void +dumpspan(uint32 idx) +{ + int32 sizeclass, n, npages, i, column; + uintptr size; + byte *p; + byte *arena_start; + MSpan *s; + bool allocated, special; + + s = runtime_mheap.allspans[idx]; + if(s->state != MSpanInUse) + return; + arena_start = runtime_mheap.arena_start; + p = (byte*)(s->start << PageShift); + sizeclass = s->sizeclass; + size = s->elemsize; + if(sizeclass == 0) { + n = 1; + } else { + npages = runtime_class_to_allocnpages[sizeclass]; + n = (npages << PageShift) / size; + } + + runtime_printf("%p .. %p:\n", p, p+n*size); + column = 0; + for(; n>0; n--, p+=size) { + uintptr off, *bitp, shift, bits; + + off = (uintptr*)p - (uintptr*)arena_start; + bitp = (uintptr*)arena_start - off/wordsPerBitmapWord - 1; + shift = off % wordsPerBitmapWord; + bits = *bitp>>shift; + + allocated = ((bits & bitAllocated) != 0); + special = ((bits & bitSpecial) != 0); + + for(i=0; (uint32)i<size; i+=sizeof(void*)) { + if(column == 0) { + runtime_printf("\t"); + } + if(i == 0) { + runtime_printf(allocated ? "(" : "["); + runtime_printf(special ? "@" : ""); + runtime_printf("%p: ", p+i); + } else { + runtime_printf(" "); + } + + runtime_printf("%p", *(void**)(p+i)); + + if(i+sizeof(void*) >= size) { + runtime_printf(allocated ? ") " : "] "); + } + + column++; + if(column == 8) { + runtime_printf("\n"); + column = 0; + } + } + } + runtime_printf("\n"); +} + +// A debugging function to dump the contents of memory +void +runtime_memorydump(void) +{ + uint32 spanidx; + + for(spanidx=0; spanidx<runtime_mheap.nspan; spanidx++) { + dumpspan(spanidx); + } +} void runtime_gchelper(void) { @@ -1141,9 +1216,6 @@ runfinq(void* dummy __attribute__ ((unused))) FinBlock *fb, *next; uint32 i; - if(raceenabled) - runtime_racefingo(); - for(;;) { // There's no need for a lock in this section // because it only conflicts with the garbage @@ -1158,6 +1230,8 @@ runfinq(void* dummy __attribute__ ((unused))) runtime_park(nil, nil, "finalizer wait"); continue; } + if(raceenabled) + runtime_racefingo(); for(; fb; fb=next) { next = fb->next; for(i=0; i<(uint32)fb->cnt; i++) { |