diff options
Diffstat (limited to 'erts/emulator/beam')
| -rw-r--r-- | erts/emulator/beam/external.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/erts/emulator/beam/external.c b/erts/emulator/beam/external.c index 0756393a41..ce61cdf040 100644 --- a/erts/emulator/beam/external.c +++ b/erts/emulator/beam/external.c @@ -3793,6 +3793,30 @@ dec_term_atom_common: hp += heap_bin_size(n); sys_memcpy(hb->data, ep, n); *objp = make_binary(hb); + } else if (edep && edep->data && edep->data->binp && + n > (edep->data->binp->orig_size / 4)) { + /* If we decode a refc binary from a distribution data + entry we know that it is a refc binary to begin with + so we just increment it and use the reference. This + means that the entire distribution data entry will + remain until this binary is de-allocated so we only + do it if a substantial part (> 25%) of the data + is a binary. */ + ProcBin* pb = (ProcBin *) hp; + Binary* bptr = edep->data->binp; + erts_refc_inc(&bptr->intern.refc, 1); + pb->thing_word = HEADER_PROC_BIN; + pb->size = n; + pb->next = factory->off_heap->first; + factory->off_heap->first = (struct erl_off_heap_header*)pb; + pb->val = bptr; + pb->bytes = (byte*) ep; + ERTS_ASSERT((byte*)(bptr->orig_bytes) < ep && + ep+n <= (byte*)(bptr->orig_bytes+bptr->orig_size)); + pb->flags = 0; + OH_OVERHEAD(factory->off_heap, pb->size / sizeof(Eterm)); + hp += PROC_BIN_SIZE; + *objp = make_binary(pb); } else { Binary* dbin = erts_bin_nrml_alloc(n); |