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-rw-r--r--erts/emulator/beam/binary.c63
-rw-r--r--erts/emulator/beam/erl_bif_info.c13
-rw-r--r--erts/emulator/beam/global.h1
3 files changed, 40 insertions, 37 deletions
diff --git a/erts/emulator/beam/binary.c b/erts/emulator/beam/binary.c
index ca3e48e205..d4db1a4188 100644
--- a/erts/emulator/beam/binary.c
+++ b/erts/emulator/beam/binary.c
@@ -60,14 +60,36 @@ erts_init_binary(void)
}
+static ERTS_INLINE
+Eterm build_proc_bin(ErlOffHeap* ohp, Eterm* hp, Binary* bptr)
+{
+ ProcBin* pb = (ProcBin *) hp;
+ pb->thing_word = HEADER_PROC_BIN;
+ pb->size = bptr->orig_size;
+ pb->next = ohp->first;
+ ohp->first = (struct erl_off_heap_header*)pb;
+ pb->val = bptr;
+ pb->bytes = (byte*) bptr->orig_bytes;
+ pb->flags = 0;
+ OH_OVERHEAD(ohp, pb->size / sizeof(Eterm));
+
+ return make_binary(pb);
+}
+
+/** @brief Initiate a ProcBin for a full Binary.
+ * @param hp must point to PROC_BIN_SIZE available heap words.
+ */
+Eterm erts_build_proc_bin(ErlOffHeap* ohp, Eterm* hp, Binary* bptr)
+{
+ return build_proc_bin(ohp, hp, bptr);
+}
+
/*
* Create a brand new binary from scratch.
*/
-
Eterm
new_binary(Process *p, byte *buf, Uint len)
{
- ProcBin* pb;
Binary* bptr;
if (len <= ERL_ONHEAP_BIN_LIMIT) {
@@ -88,23 +110,7 @@ new_binary(Process *p, byte *buf, Uint len)
sys_memcpy(bptr->orig_bytes, buf, len);
}
- /*
- * Now allocate the ProcBin on the heap.
- */
- pb = (ProcBin *) HAlloc(p, PROC_BIN_SIZE);
- pb->thing_word = HEADER_PROC_BIN;
- pb->size = len;
- pb->next = MSO(p).first;
- MSO(p).first = (struct erl_off_heap_header*)pb;
- pb->val = bptr;
- pb->bytes = (byte*) bptr->orig_bytes;
- pb->flags = 0;
-
- /*
- * Miscellaneous updates. Return the tagged binary.
- */
- OH_OVERHEAD(&(MSO(p)), pb->size / sizeof(Eterm));
- return make_binary(pb);
+ return build_proc_bin(&MSO(p), HAlloc(p, PROC_BIN_SIZE), bptr);
}
/*
@@ -113,7 +119,6 @@ new_binary(Process *p, byte *buf, Uint len)
Eterm erts_new_mso_binary(Process *p, byte *buf, Uint len)
{
- ProcBin* pb;
Binary* bptr;
/*
@@ -124,23 +129,7 @@ Eterm erts_new_mso_binary(Process *p, byte *buf, Uint len)
sys_memcpy(bptr->orig_bytes, buf, len);
}
- /*
- * Now allocate the ProcBin on the heap.
- */
- pb = (ProcBin *) HAlloc(p, PROC_BIN_SIZE);
- pb->thing_word = HEADER_PROC_BIN;
- pb->size = len;
- pb->next = MSO(p).first;
- MSO(p).first = (struct erl_off_heap_header*)pb;
- pb->val = bptr;
- pb->bytes = (byte*) bptr->orig_bytes;
- pb->flags = 0;
-
- /*
- * Miscellaneous updates. Return the tagged binary.
- */
- OH_OVERHEAD(&(MSO(p)), pb->size / sizeof(Eterm));
- return make_binary(pb);
+ return build_proc_bin(&MSO(p), HAlloc(p, PROC_BIN_SIZE), bptr);
}
/*
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index 80adca0072..4050fb6146 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -4447,6 +4447,19 @@ BIF_RETTYPE erts_debug_set_internal_state_2(BIF_ALIST_2)
BIF_RET(res);
}
}
+ else if (ERTS_IS_ATOM_STR("binary", BIF_ARG_1)) {
+ Sint64 size;
+ if (term_to_Sint64(BIF_ARG_2, &size)) {
+ Binary* refbin = erts_bin_drv_alloc_fnf(size);
+ if (!refbin)
+ BIF_RET(am_false);
+ sys_memset(refbin->orig_bytes, 0, size);
+ BIF_RET(erts_build_proc_bin(&MSO(BIF_P),
+ HAlloc(BIF_P, PROC_BIN_SIZE),
+ refbin));
+ }
+ }
+
}
BIF_ERROR(BIF_P, BADARG);
diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h
index 9505942307..87777d14e9 100644
--- a/erts/emulator/beam/global.h
+++ b/erts/emulator/beam/global.h
@@ -867,6 +867,7 @@ Eterm erts_new_heap_binary(Process *p, byte *buf, int len, byte** datap);
Eterm erts_new_mso_binary(Process*, byte*, Uint);
Eterm new_binary(Process*, byte*, Uint);
Eterm erts_realloc_binary(Eterm bin, size_t size);
+Eterm erts_build_proc_bin(ErlOffHeap*, Eterm*, Binary*);
/* erl_bif_info.c */