BIF_RETTYPE module_loaded_1(BIF_ALIST_1)
{
Module* modp;
ErtsCodeIndex code_ix;
Eterm res = am_false;
if (is_not_atom(BIF_ARG_1)) {
BIF_ERROR(BIF_P, BADARG);
}
code_ix = erts_active_code_ix();
if ((modp = erts_get_module(BIF_ARG_1, code_ix)) != NULL) {
if (modp->curr.code_hdr
&& modp->curr.code_hdr->on_load_function_ptr == NULL) {
res = am_true;
}
}
BIF_RET(res);
}
BIF_RETTYPE
has_prepared_code_on_load_1(BIF_ALIST_1)
{
Eterm res;
ProcBin* pb;
if (!ERTS_TERM_IS_MAGIC_BINARY(BIF_ARG_1)) {
error:
BIF_ERROR(BIF_P, BADARG);
}
pb = (ProcBin*) binary_val(BIF_ARG_1);
res = erts_has_code_on_load(pb->val);
if (res == NIL) {
goto error;
}
BIF_RET(res);
}
BIF_RETTYPE lists_reverse_2(BIF_ALIST_2)
{
/* Handle legal and illegal non-lists quickly. */
if (is_nil(BIF_ARG_1)) {
BIF_RET(BIF_ARG_2);
} else if (is_not_list(BIF_ARG_1)) {
BIF_ERROR(BIF_P, BADARG);
}
/* We build the reversal on the unused part of the heap if possible to save
* us the trouble of having to figure out the list size. We fall back to
* lists_reverse_alloc when we run out of space. */
if (HeapWordsLeft(BIF_P) > 8) {
return lists_reverse_onheap(BIF_P, BIF_ARG_1, BIF_ARG_2);
}
return lists_reverse_alloc(BIF_P, BIF_ARG_1, BIF_ARG_2);
}
BIF_RETTYPE erts_internal_port_info_2(BIF_ALIST_2)
{
Eterm retval;
Port* prt;
if (is_internal_port(BIF_ARG_1) || is_atom(BIF_ARG_1)) {
prt = sig_lookup_port(BIF_P, BIF_ARG_1);
if (!prt)
BIF_RET(am_undefined);
}
else if (is_external_port(BIF_ARG_1)) {
if (external_port_dist_entry(BIF_ARG_1) == erts_this_dist_entry)
BIF_RET(am_undefined);
else
BIF_RET(am_badarg);
}
else {
BIF_RET(am_badarg);
}
switch (erts_port_info(BIF_P, prt, BIF_ARG_2, &retval)) {
case ERTS_PORT_OP_CALLER_EXIT:
case ERTS_PORT_OP_BADARG:
BIF_RET(am_badarg);
case ERTS_PORT_OP_DROPPED:
BIF_RET(am_undefined);
case ERTS_PORT_OP_SCHEDULED:
ASSERT(is_internal_ordinary_ref(retval));
BIF_RET(retval);
case ERTS_PORT_OP_DONE:
ASSERT(is_not_internal_ref(retval));
BIF_RET(retval);
default:
ERTS_INTERNAL_ERROR("Unexpected erts_port_info() result");
BIF_RET(am_internal_error);
}
}
BIF_RETTYPE port_connect_2(BIF_ALIST_2)
{
Port* prt;
Process* rp;
Eterm pid = BIF_ARG_2;
if (is_not_internal_pid(pid)) {
error:
BIF_ERROR(BIF_P, BADARG);
}
prt = id_or_name2port(BIF_P, BIF_ARG_1);
if (!prt) {
goto error;
}
rp = erts_pid2proc(BIF_P, ERTS_PROC_LOCK_MAIN,
pid, ERTS_PROC_LOCK_LINK);
if (!rp) {
erts_smp_port_unlock(prt);
ERTS_SMP_ASSERT_IS_NOT_EXITING(BIF_P);
goto error;
}
erts_add_link(&(rp->nlinks), LINK_PID, prt->id);
erts_add_link(&(prt->nlinks), LINK_PID, pid);
erts_smp_proc_unlock(rp, ERTS_PROC_LOCK_LINK);
prt->connected = pid; /* internal pid */
erts_smp_port_unlock(prt);
#ifdef USE_VM_PROBES
if (DTRACE_ENABLED(port_connect)) {
DTRACE_CHARBUF(process_str, DTRACE_TERM_BUF_SIZE);
DTRACE_CHARBUF(port_str, DTRACE_TERM_BUF_SIZE);
DTRACE_CHARBUF(newprocess_str, DTRACE_TERM_BUF_SIZE);
dtrace_pid_str(prt->connected, process_str);
erts_snprintf(port_str, sizeof(port_str), "%T", prt->id);
dtrace_proc_str(rp, newprocess_str);
DTRACE4(port_connect, process_str, port_str, prt->name, newprocess_str);
}
#endif
BIF_RET(am_true);
}
BIF_RETTYPE
erts_debug_copy_shared_1(BIF_ALIST_1)
{
Process* p = BIF_P;
Eterm term = BIF_ARG_1;
Uint size;
Eterm* hp;
Eterm copy;
erts_shcopy_t info;
INITIALIZE_SHCOPY(info);
size = copy_shared_calculate(term, &info);
if (size > 0) {
hp = HAlloc(p, size);
}
copy = copy_shared_perform(term, size, &info, &hp, &p->off_heap);
DESTROY_SHCOPY(info);
BIF_RET(copy);
}
BIF_RETTYPE port_get_data_1(BIF_ALIST_1)
{
BIF_RETTYPE res;
Port* prt;
Eterm portid = BIF_ARG_1;
prt = id_or_name2port(BIF_P, portid);
if (!prt) {
BIF_ERROR(BIF_P, BADARG);
}
if (prt->bp == NULL) { /* MUST be CONST! */
res = prt->data;
} else {
Eterm* hp = HAlloc(BIF_P, prt->bp->used_size);
res = copy_struct(prt->data, prt->bp->used_size, &hp, &MSO(BIF_P));
}
erts_smp_port_unlock(prt);
BIF_RET(res);
}
Eterm
os_putenv_2(Process* p, Eterm key, Eterm value)
{
char def_buf[1024];
char *buf = NULL;
int sep_ix, i, key_len, value_len, tot_len;
key_len = is_string(key);
if (!key_len) {
error:
if (buf)
erts_free(ERTS_ALC_T_TMP, (void *) buf);
BIF_ERROR(p, BADARG);
}
if (is_nil(value))
value_len = 0;
else {
value_len = is_string(value);
if (!value_len)
goto error;
}
tot_len = key_len + 1 + value_len + 1;
if (tot_len <= sizeof(def_buf))
buf = &def_buf[0];
else
buf = erts_alloc(ERTS_ALC_T_TMP, tot_len);
i = intlist_to_buf(key, buf, key_len);
if (i != key_len)
erl_exit(1, "%s:%d: Internal error\n", __FILE__, __LINE__);
sep_ix = i;
buf[i++] = '=';
if (is_not_nil(value))
i += intlist_to_buf(value, &buf[i], value_len);
if (i != key_len + 1 + value_len)
erl_exit(1, "%s:%d: Internal error\n", __FILE__, __LINE__);
buf[i] = '\0';
if (erts_sys_putenv(buf, sep_ix)) {
goto error;
}
if (buf != &def_buf[0])
erts_free(ERTS_ALC_T_TMP, (void *) buf);
BIF_RET(am_true);
}
BIF_RETTYPE abs_1(BIF_ALIST_1)
{
Eterm res;
Sint i0, i;
Eterm* hp;
/* integer arguments */
if (is_small(BIF_ARG_1)) {
i0 = signed_val(BIF_ARG_1);
i = ERTS_SMALL_ABS(i0);
if (i0 == MIN_SMALL) {
hp = HAlloc(BIF_P, BIG_UINT_HEAP_SIZE);
BIF_RET(uint_to_big(i, hp));
} else {
BIF_RET(make_small(i));
}
} else if (is_big(BIF_ARG_1)) {
if (!big_sign(BIF_ARG_1)) {
BIF_RET(BIF_ARG_1);
} else {
int sz = big_arity(BIF_ARG_1) + 1;
Uint* x;
hp = HAlloc(BIF_P, sz); /* See note at beginning of file */
sz--;
res = make_big(hp);
x = big_val(BIF_ARG_1);
*hp++ = make_pos_bignum_header(sz);
x++; /* skip thing */
while(sz--)
*hp++ = *x++;
BIF_RET(res);
}
} else if (is_float(BIF_ARG_1)) {
FloatDef f;
GET_DOUBLE(BIF_ARG_1, f);
if (f.fd < 0.0) {
hp = HAlloc(BIF_P, FLOAT_SIZE_OBJECT);
f.fd = fabs(f.fd);
res = make_float(hp);
PUT_DOUBLE(f, hp);
BIF_RET(res);
}
else
BIF_RET(BIF_ARG_1);
}
BIF_ERROR(BIF_P, BADARG);
}
BIF_RETTYPE os_putenv_2(BIF_ALIST_2)
{
char def_buf_key[STATIC_BUF_SIZE];
char def_buf_value[STATIC_BUF_SIZE];
char *key_buf, *value_buf;
key_buf = erts_convert_filename_to_native(BIF_ARG_1,def_buf_key,
STATIC_BUF_SIZE,
ERTS_ALC_T_TMP,0,0,NULL);
if (!key_buf) {
BIF_ERROR(BIF_P, BADARG);
}
value_buf = erts_convert_filename_to_native(BIF_ARG_2,def_buf_value,
STATIC_BUF_SIZE,
ERTS_ALC_T_TMP,1,0,
NULL);
if (!value_buf) {
if (key_buf != def_buf_key) {
erts_free(ERTS_ALC_T_TMP, key_buf);
}
BIF_ERROR(BIF_P, BADARG);
}
if (erts_sys_putenv(key_buf, value_buf)) {
if (key_buf != def_buf_key) {
erts_free(ERTS_ALC_T_TMP, key_buf);
}
if (value_buf != def_buf_value) {
erts_free(ERTS_ALC_T_TMP, value_buf);
}
BIF_ERROR(BIF_P, BADARG);
}
if (key_buf != def_buf_key) {
erts_free(ERTS_ALC_T_TMP, key_buf);
}
if (value_buf != def_buf_value) {
erts_free(ERTS_ALC_T_TMP, value_buf);
}
BIF_RET(am_true);
}
BIF_RETTYPE
check_old_code_1(BIF_ALIST_1)
{
ErtsCodeIndex code_ix;
Module* modp;
Eterm res = am_false;
if (is_not_atom(BIF_ARG_1)) {
BIF_ERROR(BIF_P, BADARG);
}
code_ix = erts_active_code_ix();
modp = erts_get_module(BIF_ARG_1, code_ix);
if (modp != NULL) {
erts_rlock_old_code(code_ix);
if (modp->old.code_hdr) {
res = am_true;
}
erts_runlock_old_code(code_ix);
}
BIF_RET(res);
}
BIF_RETTYPE purge_module_1(BIF_ALIST_1)
{
int purge_res;
if (is_not_atom(BIF_ARG_1)) {
BIF_ERROR(BIF_P, BADARG);
}
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_block_system(0);
erts_export_consolidate();
purge_res = purge_module(atom_val(BIF_ARG_1));
erts_smp_release_system();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
if (purge_res < 0) {
BIF_ERROR(BIF_P, BADARG);
}
BIF_RET(am_true);
}
BIF_RETTYPE os_unsetenv_1(BIF_ALIST_1)
{
char *key_buf;
char buf[STATIC_BUF_SIZE];
key_buf = erts_convert_filename_to_native(BIF_ARG_1,buf,STATIC_BUF_SIZE,
ERTS_ALC_T_TMP,0,0,NULL);
if (!key_buf) {
BIF_ERROR(BIF_P, BADARG);
}
if (erts_sys_unsetenv(key_buf)) {
if (key_buf != buf) {
erts_free(ERTS_ALC_T_TMP, key_buf);
}
BIF_ERROR(BIF_P, BADARG);
}
if (key_buf != buf) {
erts_free(ERTS_ALC_T_TMP, key_buf);
}
BIF_RET(am_true);
}
/*
* Return list of loaded drivers {ok,[string()]}
*/
BIF_RETTYPE erl_ddll_loaded_drivers_0(BIF_ALIST_0)
{
Eterm *hp;
int need = 3;
Eterm res = NIL;
erts_driver_t *drv;
lock_drv_list();
for (drv = driver_list; drv; drv = drv->next) {
need += sys_strlen(drv->name)*2+2;
}
hp = HAlloc(BIF_P, need);
for (drv = driver_list; drv; drv = drv->next) {
Eterm l;
l = buf_to_intlist(&hp, drv->name, sys_strlen(drv->name), NIL);
res = CONS(hp,l,res);
hp += 2;
}
res = TUPLE2(hp,am_ok,res);
/* hp += 3 */
unlock_drv_list();
BIF_RET(res);
}
BIF_RETTYPE port_set_data_2(BIF_ALIST_2)
{
/*
* This is not a signal. See comment above.
*/
erts_aint_t data;
Port* prt;
prt = data_lookup_port(BIF_P, BIF_ARG_1);
if (!prt)
BIF_ERROR(BIF_P, BADARG);
if (is_immed(BIF_ARG_2)) {
data = (erts_aint_t) BIF_ARG_2;
ASSERT((data & 0x3) != 0);
}
else {
ErtsPortDataHeap *pdhp;
Uint hsize;
Eterm *hp;
hsize = size_object(BIF_ARG_2);
pdhp = erts_alloc(ERTS_ALC_T_PORT_DATA_HEAP,
sizeof(ErtsPortDataHeap) + hsize*(sizeof(Eterm)-1));
hp = &pdhp->heap[0];
pdhp->off_heap.first = NULL;
pdhp->off_heap.overhead = 0;
pdhp->data = copy_struct(BIF_ARG_2, hsize, &hp, &pdhp->off_heap);
data = (erts_aint_t) pdhp;
ASSERT((data & 0x3) == 0);
}
data = erts_smp_atomic_xchg_wb(&prt->data, data);
cleanup_old_port_data(data);
BIF_RET(am_true);
}
BIF_RETTYPE delete_module_1(BIF_ALIST_1)
{
int res;
if (is_not_atom(BIF_ARG_1))
goto badarg;
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_block_system(0);
{
Module *modp = erts_get_module(BIF_ARG_1);
if (!modp) {
res = am_undefined;
}
else if (modp->old_code != 0) {
erts_dsprintf_buf_t *dsbufp = erts_create_logger_dsbuf();
erts_dsprintf(dsbufp, "Module %T must be purged before loading\n",
BIF_ARG_1);
erts_send_error_to_logger(BIF_P->group_leader, dsbufp);
res = am_badarg;
}
else {
delete_export_references(BIF_ARG_1);
delete_code(BIF_P, 0, modp);
res = am_true;
}
}
erts_smp_release_system();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
if (res == am_badarg) {
badarg:
BIF_ERROR(BIF_P, BADARG);
}
BIF_RET(res);
}
BIF_RETTYPE hipe_bifs_show_term_1(BIF_ALIST_1)
{
Eterm obj = BIF_ARG_1;
printf("0x%0*lx\r\n", 2*(int)sizeof(long), obj);
do {
Eterm *objp;
int i, ary;
if (is_list(obj)) {
objp = list_val(obj);
ary = 2;
} else if (is_boxed(obj)) {
Eterm header;
objp = boxed_val(obj);
header = objp[0];
if (is_thing(header))
ary = thing_arityval(header);
else if (is_arity_value(header))
ary = arityval(header);
else {
printf("bad header %#lx\r\n", header);
break;
}
ary += 1;
} else
break;
for (i = 0; i < ary; ++i)
printf("0x%0*lx: 0x%0*lx\r\n",
2*(int)sizeof(long), (unsigned long)&objp[i],
2*(int)sizeof(long), objp[i]);
} while (0);
erts_printf("%T", obj);
printf("\r\n");
BIF_RET(am_true);
}
BIF_RETTYPE erts_internal_check_dirty_process_code_2(BIF_ALIST_2)
{
#if !defined(ERTS_DIRTY_SCHEDULERS)
BIF_ERROR(BIF_P, EXC_NOTSUP);
#else
Process *rp;
int reds = 0;
Eterm res;
if (BIF_P != erts_dirty_process_code_checker)
BIF_ERROR(BIF_P, EXC_NOTSUP);
if (is_not_internal_pid(BIF_ARG_1))
BIF_ERROR(BIF_P, BADARG);
if (is_not_atom(BIF_ARG_2))
BIF_ERROR(BIF_P, BADARG);
rp = erts_pid2proc_not_running(BIF_P, ERTS_PROC_LOCK_MAIN,
BIF_ARG_1, ERTS_PROC_LOCK_MAIN);
if (rp == ERTS_PROC_LOCK_BUSY)
ERTS_BIF_YIELD2(bif_export[BIF_erts_internal_check_dirty_process_code_2],
BIF_P, BIF_ARG_1, BIF_ARG_2);
if (!rp)
BIF_RET(am_false);
res = erts_check_process_code(rp, BIF_ARG_2, &reds, BIF_P->fcalls);
if (BIF_P != rp)
erts_smp_proc_unlock(rp, ERTS_PROC_LOCK_MAIN);
ASSERT(is_value(res));
BIF_RET2(res, reds);
#endif
}
BIF_RETTYPE hipe_bifs_stop_hrvtime_0(BIF_ALIST_0)
{
stop_hrvtime();
BIF_RET(am_true);
}
BIF_RETTYPE hipe_bifs_trap_count_clear_0(BIF_ALIST_0)
{
unsigned int count = hipe_trap_count;
hipe_trap_count = 0;
BIF_RET(make_small(count));
}
BIF_RETTYPE hipe_bifs_trap_count_get_0(BIF_ALIST_0)
{
BIF_RET(make_small(hipe_trap_count));
}
/*
* Backend for erl_ddll:format_error, handles all "soft" errors returned by builtins,
* possibly by calling the system specific error handler
*/
BIF_RETTYPE erl_ddll_format_error_int_1(BIF_ALIST_1)
{
Process *p = BIF_P;
Eterm code_term = BIF_ARG_1;
char *errstring = NULL;
int errint;
int len;
Eterm ret = NIL;
Eterm *hp;
/* These errors can only appear in the erlang interface, not in the interface provided
to drivers... */
switch (code_term) {
case am_inconsistent:
errstring = "Driver name and/or driver options are inconsistent with "
"currently loaded driver";
break;
case am_linked_in_driver:
errstring = "Driver is statically linked and "
"cannot be loaded/unloaded";
break;
case am_permanent:
errstring = "DDLL driver is permanent an can not be unloaded/loaded";
break;
case am_not_loaded:
errstring = "DDLL driver is not loaded";
break;
case am_not_loaded_by_this_process:
errstring = "DDLL driver was not loaded by this process";
break;
case am_not_pending:
errstring = "DDLL load not pending for this driver name";
break;
case am_already_loaded:
errstring = "DDLL driver is already loaded successfully";
break;
case am_pending_reload:
errstring = "Driver reloading is already pending";
break;
case am_pending_process:
errstring = "Driver is loaded by others when attempting "
"option {reload, pending_driver}";
break;
default:
/* A "real" error, we translate the atom to a code and translate the code
to a string in the same manner as in the interface provided to drivers... */
if (errdesc_to_code(code_term,&errint) != 0) {
goto error;
}
lock_drv_list();
errstring = erts_ddll_error(errint);
unlock_drv_list();
break;
}
if (errstring == NULL) {
goto error;
}
len = sys_strlen(errstring);
hp = HAlloc(p, 2 * len);
ret = buf_to_intlist(&hp, errstring, len, NIL);
BIF_RET(ret);
error:
BIF_ERROR(p,BADARG);
}
/*
* More detailed info about loaded drivers:
* item is processes, driver_options, port_count, linked_in_driver,
* permanent, awaiting_load, awaiting_unload
*/
BIF_RETTYPE erl_ddll_info_2(BIF_ALIST_2)
{
Process *p = BIF_P;
Eterm name_term = BIF_ARG_1;
Eterm item = BIF_ARG_2;
char *name = NULL;
Eterm res = NIL;
erts_driver_t *drv;
ProcEntryInfo *pei = NULL;
int num_pei;
Eterm *hp;
int i;
Uint filter;
int have_lock = 0;
if ((name = pick_list_or_atom(name_term)) == NULL) {
goto error;
}
if (!is_atom(item)) {
goto error;
}
lock_drv_list();
have_lock = 1;
if ((drv = lookup_driver(name)) == NULL) {
goto error;
}
switch (item) {
case am_processes:
filter = ERL_DE_PROC_LOADED;
break;
case am_driver_options:
if (drv->handle == NULL) {
res = am_linked_in_driver;
} else {
Uint start_flags = drv->handle->flags & ERL_FL_CONSISTENT_MASK;
/* Cheating, only one flag for now... */
if (start_flags & ERL_DE_FL_KILL_PORTS) {
Eterm *myhp;
myhp = HAlloc(p,2);
res = CONS(myhp,am_kill_ports,NIL);
} else {
res = NIL;
}
}
goto done;
case am_port_count:
if (drv->handle == NULL) {
res = am_linked_in_driver;
} else if (drv->handle->status == ERL_DE_PERMANENT) {
res = am_permanent;
} else {
res = make_small(erts_atomic32_read_nob(&drv->handle->port_count));
}
goto done;
case am_linked_in_driver:
if (drv->handle == NULL){
res = am_true;
} else {
res = am_false;
}
goto done;
case am_permanent:
if (drv->handle != NULL && drv->handle->status == ERL_DE_PERMANENT) {
res = am_true;
} else {
res = am_false;
}
goto done;
case am_awaiting_load:
filter = ERL_DE_PROC_AWAIT_LOAD;
break;
case am_awaiting_unload:
filter = ERL_DE_PROC_AWAIT_UNLOAD;
break;
default:
goto error;
}
if (drv->handle == NULL) {
res = am_linked_in_driver;
goto done;
} else if (drv->handle->status == ERL_DE_PERMANENT) {
res = am_permanent;
goto done;
}
num_pei = build_proc_info(drv->handle, &pei, filter);
if (!num_pei) {
goto done;
}
hp = HAlloc(p,num_pei * (2+3));
for (i = 0; i < num_pei; ++ i) {
Eterm tpl = TUPLE2(hp,pei[i].pid,make_small(pei[i].count));
hp += 3;
res = CONS(hp,tpl,res);
hp += 2;
}
done:
unlock_drv_list();
if (pei)
erts_free(ERTS_ALC_T_DDLL_TMP_BUF, pei);
erts_free(ERTS_ALC_T_DDLL_TMP_BUF, (void *) name);
BIF_RET(res);
error:
if (name != NULL) {
erts_free(ERTS_ALC_T_DDLL_TMP_BUF, (void *) name);
}
if (have_lock) {
unlock_drv_list();
}
BIF_ERROR(p,BADARG);
}
/*
You have to have loaded the driver and the pid state
is LOADED or AWAIT_LOAD. You will be removed from the list
regardless of driver state.
If the driver is loaded by someone else to, return is
{ok, pending_process}
If the driver is loaded but locked by a port, return is
{ok, pending_driver}
If the driver is loaded and free to unload (you're the last holding it)
{ok, unloaded}
If it's not loaded or not loaded by you
{error, not_loaded} or {error, not_loaded_by_you}
Internally, if its in state UNLOADING, just return {ok, pending_driver} and
remove/decrement this pid (which should be an LOADED tagged one).
If the state is RELOADING, this pid should be in list as LOADED tagged,
only AWAIT_LOAD would be possible but not allowed for unloading, remove it
and, if the last LOADED tagged, change from RELOAD to UNLOAD and notify
any AWAIT_LOAD-waiters with {'DOWN', ref(), driver, name(), load_cancelled}
If the driver made itself permanent, {'UP', ref(), driver, name(), permanent}
*/
Eterm erl_ddll_try_unload_2(BIF_ALIST_2)
{
Eterm name_term = BIF_ARG_1;
Eterm options = BIF_ARG_2;
char *name = NULL;
Eterm ok_term = NIL;
Eterm soft_error_term = NIL;
erts_driver_t *drv;
DE_Handle *dh;
DE_ProcEntry *pe;
Eterm *hp;
Eterm t;
int monitor = 0;
Eterm l;
int kill_ports = 0;
erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
for(l = options; is_list(l); l = CDR(list_val(l))) {
Eterm opt = CAR(list_val(l));
Eterm *tp;
if (is_not_tuple(opt)) {
if (opt == am_kill_ports) {
kill_ports = 1;
continue;
} else {
goto error;
}
}
tp = tuple_val(opt);
if (*tp != make_arityval(2) || tp[1] != am_monitor) {
goto error;
}
if (tp[2] == am_pending_driver) {
monitor = 1;
} else if (tp[2] == am_pending) {
monitor = 2;
} else {
goto error;
}
}
if (is_not_nil(l)) {
goto error;
}
if ((name = pick_list_or_atom(name_term)) == NULL) {
goto error;
}
lock_drv_list();
if ((drv = lookup_driver(name)) == NULL) {
soft_error_term = am_not_loaded;
goto soft_error;
}
if (drv->handle == NULL) {
soft_error_term = am_linked_in_driver;
goto soft_error;
} else if (drv->handle->status == ERL_DE_PERMANENT) {
soft_error_term = am_permanent;
goto soft_error;
}
dh = drv->handle;
if (dh->flags & ERL_DE_FL_KILL_PORTS) {
kill_ports = 1;
}
if ((pe = find_proc_entry(dh, BIF_P, ERL_DE_PROC_LOADED)) == NULL) {
if (num_procs(dh, ERL_DE_PROC_LOADED) > 0) {
soft_error_term = am_not_loaded_by_this_process;
goto soft_error;
}
} else {
remove_proc_entry(dh, pe);
if (!(pe->flags & ERL_DE_FL_DEREFERENCED)) {
erts_ddll_dereference_driver(dh);
}
erts_free(ERTS_ALC_T_DDLL_PROCESS, pe);
}
if (num_procs(dh, ERL_DE_PROC_LOADED) > 0) {
ok_term = am_pending_process;
--monitor;
goto done;
}
if (dh->status == ERL_DE_RELOAD ||
dh->status == ERL_DE_FORCE_RELOAD) {
notify_all(dh, drv->name,
ERL_DE_PROC_AWAIT_LOAD, am_DOWN, am_load_cancelled);
erts_free(ERTS_ALC_T_DDLL_HANDLE,dh->reload_full_path);
erts_free(ERTS_ALC_T_DDLL_HANDLE,dh->reload_driver_name);
dh->reload_full_path = dh->reload_driver_name = NULL;
dh->reload_flags = 0;
}
if (erts_atomic32_read_nob(&dh->port_count) > 0) {
++kill_ports;
}
dh->status = ERL_DE_UNLOAD;
ok_term = am_pending_driver;
done:
assert_drv_list_rwlocked();
if (kill_ports > 1) {
/* Avoid closing the driver by referencing it */
erts_ddll_reference_driver(dh);
dh->status = ERL_DE_FORCE_UNLOAD;
unlock_drv_list();
kill_ports_driver_unloaded(dh);
lock_drv_list();
erts_ddll_dereference_driver(dh);
}
erts_ddll_reference_driver(dh);
unlock_drv_list();
erts_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
lock_drv_list();
erts_ddll_dereference_driver(dh);
erts_free(ERTS_ALC_T_DDLL_TMP_BUF, (void *) name);
BIF_P->flags |= F_USING_DDLL;
if (monitor > 0) {
Eterm mref = add_monitor(BIF_P, dh, ERL_DE_PROC_AWAIT_UNLOAD);
hp = HAlloc(BIF_P, 4);
t = TUPLE3(hp, am_ok, ok_term, mref);
} else {
hp = HAlloc(BIF_P, 3);
t = TUPLE2(hp, am_ok, ok_term);
}
if (kill_ports > 1) {
ERTS_BIF_CHK_EXITED(BIF_P); /* May be exited by port killing */
}
unlock_drv_list();
BIF_RET(t);
soft_error:
unlock_drv_list();
erts_free(ERTS_ALC_T_DDLL_TMP_BUF, (void *) name);
erts_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
hp = HAlloc(BIF_P, 3);
t = TUPLE2(hp, am_error, soft_error_term);
BIF_RET(t);
error: /* No lock fiddling before going here */
assert_drv_list_not_locked();
if (name != NULL) {
erts_free(ERTS_ALC_T_DDLL_TMP_BUF, (void *) name);
}
erts_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
BIF_ERROR(BIF_P, BADARG);
}
/*
* Try to load. If the driver is OK, add as LOADED. If the driver is
* UNLOAD, possibly change to reload and add as LOADED,
* there should be no other
* LOADED tagged pid's. If the driver is RELOAD then add/increment as
* LOADED (should be some LOADED pid). If the driver is not present,
* really load and add as LOADED {ok,loaded} {ok,pending_driver}
* {error, permanent} {error,load_error()}
*/
BIF_RETTYPE erl_ddll_try_load_3(BIF_ALIST_3)
{
Eterm path_term = BIF_ARG_1;
Eterm name_term = BIF_ARG_2;
Eterm options = BIF_ARG_3;
char *path = NULL;
Sint path_len;
char *name = NULL;
DE_Handle *dh;
erts_driver_t *drv;
int res;
Eterm soft_error_term = NIL;
Eterm ok_term = NIL;
Eterm *hp;
Eterm t;
int monitor = 0;
int reload = 0;
Eterm l;
Uint flags = 0;
int kill_ports = 0;
int do_build_load_error = 0;
int build_this_load_error = 0;
int encoding;
for(l = options; is_list(l); l = CDR(list_val(l))) {
Eterm opt = CAR(list_val(l));
Eterm *tp;
if (is_not_tuple(opt)) {
goto error;
}
tp = tuple_val(opt);
if (*tp != make_arityval(2) || is_not_atom(tp[1])) {
goto error;
}
switch (tp[1]) {
case am_driver_options:
{
Eterm ll;
for(ll = tp[2]; is_list(ll); ll = CDR(list_val(ll))) {
Eterm dopt = CAR(list_val(ll));
if (dopt == am_kill_ports) {
flags |= ERL_DE_FL_KILL_PORTS;
} else {
goto error;
}
}
if (is_not_nil(ll)) {
goto error;
}
}
break;
case am_monitor:
if (tp[2] == am_pending_driver) {
monitor = 1;
} else if (tp[2] == am_pending ) {
monitor = 2;
} else {
goto error;
}
break;
case am_reload:
if (tp[2] == am_pending_driver) {
reload = 1;
} else if (tp[2] == am_pending ) {
reload = 2;
} else {
goto error;
}
break;
default:
goto error;
}
}
if (is_not_nil(l)) {
goto error;
}
if ((name = pick_list_or_atom(name_term)) == NULL) {
goto error;
}
encoding = erts_get_native_filename_encoding();
if (encoding == ERL_FILENAME_WIN_WCHAR) {
/* Do not convert the lib name to utf-16le yet, do that in win32 specific code */
/* since lib_name is used in error messages */
encoding = ERL_FILENAME_UTF8;
}
path = erts_convert_filename_to_encoding(path_term, NULL, 0,
ERTS_ALC_T_DDLL_TMP_BUF, 1, 0,
encoding, &path_len,
sys_strlen(name) + 2); /* might need path separator */
if (!path) {
goto error;
}
ASSERT(path_len > 0 && path[path_len-1] == 0);
while (--path_len > 0 && (path[path_len-1] == '\\' || path[path_len-1] == '/'))
;
path[path_len++] = '/';
sys_strcpy(path+path_len,name);
erts_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
lock_drv_list();
if ((drv = lookup_driver(name)) != NULL) {
if (drv->handle == NULL) {
/* static_driver */
soft_error_term = am_linked_in_driver;
goto soft_error;
} else {
dh = drv->handle;
if (dh->status == ERL_DE_OK) {
int is_last = is_last_user(dh, BIF_P);
if (reload == 1 && !is_last) {
/*Want reload if no other users,
but there are others...*/
soft_error_term = am_pending_process;
goto soft_error;
}
if (reload != 0) {
DE_ProcEntry *old;
if ((dh->flags & ERL_FL_CONSISTENT_MASK) !=
(flags & ERL_FL_CONSISTENT_MASK)) {
soft_error_term = am_inconsistent;
goto soft_error;
}
if ((old = find_proc_entry(dh, BIF_P,
ERL_DE_PROC_LOADED)) ==
NULL) {
soft_error_term = am_not_loaded_by_this_process;
goto soft_error;
} else {
remove_proc_entry(dh, old);
erts_ddll_dereference_driver(dh);
erts_free(ERTS_ALC_T_DDLL_PROCESS, old);
}
/* Reload requested and granted */
dereference_all_processes(dh);
set_driver_reloading(dh, BIF_P, path, name, flags);
if (dh->flags & ERL_DE_FL_KILL_PORTS) {
kill_ports = 1;
}
ok_term = (reload == 1) ? am_pending_driver :
am_pending_process;
} else {
/* Already loaded and healthy (might be by me) */
if (sys_strcmp(dh->full_path, path) ||
(dh->flags & ERL_FL_CONSISTENT_MASK) !=
(flags & ERL_FL_CONSISTENT_MASK)) {
soft_error_term = am_inconsistent;
goto soft_error;
}
add_proc_loaded(dh, BIF_P);
erts_ddll_reference_driver(dh);
monitor = 0;
ok_term = mkatom("already_loaded");
}
} else if (dh->status == ERL_DE_UNLOAD ||
dh->status == ERL_DE_FORCE_UNLOAD) {
/* pending driver */
if (reload != 0) {
soft_error_term = am_not_loaded_by_this_process;
goto soft_error;
}
if (sys_strcmp(dh->full_path, path) ||
(dh->flags & ERL_FL_CONSISTENT_MASK) !=
(flags & ERL_FL_CONSISTENT_MASK)) {
soft_error_term = am_inconsistent;
goto soft_error;
}
dh->status = ERL_DE_OK;
notify_all(dh, drv->name,
ERL_DE_PROC_AWAIT_UNLOAD, am_UP,
am_unload_cancelled);
add_proc_loaded(dh, BIF_P);
erts_ddll_reference_driver(dh);
monitor = 0;
ok_term = mkatom("already_loaded");
} else if (dh->status == ERL_DE_RELOAD ||
dh->status == ERL_DE_FORCE_RELOAD) {
if (reload != 0) {
soft_error_term = am_pending_reload;
goto soft_error;
}
if (sys_strcmp(dh->reload_full_path, path) ||
(dh->reload_flags & ERL_FL_CONSISTENT_MASK) !=
(flags & ERL_FL_CONSISTENT_MASK)) {
soft_error_term = am_inconsistent;
goto soft_error;
}
/* Load of granted unload... */
/* Don't reference, will happen after reload */
add_proc_loaded_deref(dh, BIF_P);
++monitor;
ok_term = am_pending_driver;
} else { /* ERL_DE_PERMANENT */
soft_error_term = am_permanent;
goto soft_error;
}
}
} else { /* driver non-existing */
if (reload != 0) {
soft_error_term = am_not_loaded;
goto soft_error;
}
if ((res = load_driver_entry(&dh, path, name)) != ERL_DE_NO_ERROR) {
build_this_load_error = res;
do_build_load_error = 1;
soft_error_term = am_undefined;
goto soft_error;
} else {
dh->flags = flags;
add_proc_loaded(dh, BIF_P);
first_ddll_reference(dh);
monitor = 0;
ok_term = mkatom("loaded");
}
}
assert_drv_list_rwlocked();
if (kill_ports) {
/* Avoid closing the driver by referencing it */
erts_ddll_reference_driver(dh);
ASSERT(dh->status == ERL_DE_RELOAD);
dh->status = ERL_DE_FORCE_RELOAD;
unlock_drv_list();
kill_ports_driver_unloaded(dh);
/* Dereference, eventually causing driver destruction */
lock_drv_list();
erts_ddll_dereference_driver(dh);
}
erts_ddll_reference_driver(dh);
unlock_drv_list();
erts_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
lock_drv_list();
erts_ddll_dereference_driver(dh);
BIF_P->flags |= F_USING_DDLL;
if (monitor) {
Eterm mref = add_monitor(BIF_P, dh, ERL_DE_PROC_AWAIT_LOAD);
hp = HAlloc(BIF_P, 4);
t = TUPLE3(hp, am_ok, ok_term, mref);
} else {
hp = HAlloc(BIF_P, 3);
t = TUPLE2(hp, am_ok, ok_term);
}
unlock_drv_list();
erts_free(ERTS_ALC_T_DDLL_TMP_BUF, (void *) path);
erts_free(ERTS_ALC_T_DDLL_TMP_BUF, (void *) name);
ERTS_LC_ASSERT(ERTS_PROC_LOCK_MAIN & erts_proc_lc_my_proc_locks(BIF_P));
BIF_RET(t);
soft_error:
unlock_drv_list();
erts_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
if (do_build_load_error) {
soft_error_term = build_load_error(BIF_P, build_this_load_error);
}
hp = HAlloc(BIF_P, 3);
t = TUPLE2(hp, am_error, soft_error_term);
erts_free(ERTS_ALC_T_DDLL_TMP_BUF, (void *) path);
erts_free(ERTS_ALC_T_DDLL_TMP_BUF, (void *) name);
ERTS_LC_ASSERT(ERTS_PROC_LOCK_MAIN & erts_proc_lc_my_proc_locks(BIF_P));
BIF_RET(t);
error:
assert_drv_list_not_locked();
ERTS_LC_ASSERT(ERTS_PROC_LOCK_MAIN & erts_proc_lc_my_proc_locks(BIF_P));
if (path != NULL) {
erts_free(ERTS_ALC_T_DDLL_TMP_BUF, (void *) path);
}
if (name != NULL) {
erts_free(ERTS_ALC_T_DDLL_TMP_BUF, (void *) name);
}
BIF_ERROR(BIF_P, BADARG);
}
BIF_RETTYPE finish_after_on_load_2(BIF_ALIST_2)
{
ErtsCodeIndex code_ix;
Module* modp;
if (!erts_try_seize_code_write_permission(BIF_P)) {
ERTS_BIF_YIELD2(bif_export[BIF_finish_after_on_load_2],
BIF_P, BIF_ARG_1, BIF_ARG_2);
}
/* ToDo: Use code_ix staging instead of thread blocking */
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_thr_progress_block();
code_ix = erts_active_code_ix();
modp = erts_get_module(BIF_ARG_1, code_ix);
if (!modp || !modp->old.code_hdr) {
error:
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_release_code_write_permission();
BIF_ERROR(BIF_P, BADARG);
}
if (modp->old.code_hdr->on_load_function_ptr == NULL) {
goto error;
}
if (BIF_ARG_2 != am_false && BIF_ARG_2 != am_true) {
goto error;
}
if (BIF_ARG_2 == am_true) {
int i;
struct erl_module_instance t;
/*
* Swap old and new code.
*/
t = modp->curr;
modp->curr = modp->old;
modp->old = t;
/*
* The on_load function succeded. Fix up export entries.
*/
for (i = 0; i < export_list_size(code_ix); i++) {
Export *ep = export_list(i,code_ix);
if (ep == NULL || ep->code[0] != BIF_ARG_1) {
continue;
}
if (ep->code[4] != 0) {
ep->addressv[code_ix] = (void *) ep->code[4];
ep->code[4] = 0;
} else {
if (ep->addressv[code_ix] == ep->code+3 &&
ep->code[3] == (BeamInstr) em_apply_bif) {
continue;
}
ep->addressv[code_ix] = ep->code+3;
ep->code[3] = (BeamInstr) em_call_error_handler;
}
}
modp->curr.code_hdr->on_load_function_ptr = NULL;
set_default_trace_pattern(BIF_ARG_1);
} else if (BIF_ARG_2 == am_false) {
int i;
/*
* The on_load function failed. Remove references to the
* code that is about to be purged from the export entries.
*/
for (i = 0; i < export_list_size(code_ix); i++) {
Export *ep = export_list(i,code_ix);
if (ep == NULL || ep->code[0] != BIF_ARG_1) {
continue;
}
if (ep->code[3] == (BeamInstr) em_apply_bif) {
continue;
}
ep->code[4] = 0;
}
}
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_release_code_write_permission();
BIF_RET(am_true);
}
BIF_RETTYPE hipe_bifs_nstack_used_size_0(BIF_ALIST_0)
{
BIF_RET(make_small(hipe_nstack_used(BIF_P)));
}
BIF_RETTYPE load_nif_2(BIF_ALIST_2)
{
static const char bad_lib[] = "bad_lib";
static const char reload[] = "reload";
static const char upgrade[] = "upgrade";
char* lib_name = NULL;
void* handle = NULL;
void* init_func;
ErlNifEntry* entry = NULL;
ErlNifEnv env;
int len, i, err;
Module* mod;
Eterm mod_atom;
Eterm f_atom;
BeamInstr* caller;
ErtsSysDdllError errdesc = ERTS_SYS_DDLL_ERROR_INIT;
Eterm ret = am_ok;
int veto;
struct erl_module_nif* lib = NULL;
len = list_length(BIF_ARG_1);
if (len < 0) {
BIF_ERROR(BIF_P, BADARG);
}
lib_name = (char *) erts_alloc(ERTS_ALC_T_TMP, len + 1);
if (intlist_to_buf(BIF_ARG_1, lib_name, len) != len) {
erts_free(ERTS_ALC_T_TMP, lib_name);
BIF_ERROR(BIF_P, BADARG);
}
lib_name[len] = '\0';
/* Block system (is this the right place to do it?) */
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_thr_progress_block();
/* Find calling module */
ASSERT(BIF_P->current != NULL);
ASSERT(BIF_P->current[0] == am_erlang
&& BIF_P->current[1] == am_load_nif
&& BIF_P->current[2] == 2);
caller = find_function_from_pc(BIF_P->cp);
ASSERT(caller != NULL);
mod_atom = caller[0];
ASSERT(is_atom(mod_atom));
mod=erts_get_module(mod_atom);
ASSERT(mod != NULL);
if (!in_area(caller, mod->code, mod->code_length)) {
ASSERT(in_area(caller, mod->old_code, mod->old_code_length));
ret = load_nif_error(BIF_P, "old_code", "Calling load_nif from old "
"module '%T' not allowed", mod_atom);
}
else if ((err=erts_sys_ddll_open2(lib_name, &handle, &errdesc)) != ERL_DE_NO_ERROR) {
const char slogan[] = "Failed to load NIF library";
if (strstr(errdesc.str, lib_name) != NULL) {
ret = load_nif_error(BIF_P, "load_failed", "%s: '%s'", slogan, errdesc.str);
}
else {
ret = load_nif_error(BIF_P, "load_failed", "%s %s: '%s'", slogan, lib_name, errdesc.str);
}
}
else if (erts_sys_ddll_load_nif_init(handle, &init_func, &errdesc) != ERL_DE_NO_ERROR) {
ret = load_nif_error(BIF_P, bad_lib, "Failed to find library init"
" function: '%s'", errdesc.str);
}
else if ((add_taint(mod_atom),
(entry = erts_sys_ddll_call_nif_init(init_func)) == NULL)) {
ret = load_nif_error(BIF_P, bad_lib, "Library init-call unsuccessful");
}
else if (entry->major != ERL_NIF_MAJOR_VERSION
|| entry->minor > ERL_NIF_MINOR_VERSION) {
ret = load_nif_error(BIF_P, bad_lib, "Library version (%d.%d) not compatible (with %d.%d).",
entry->major, entry->minor, ERL_NIF_MAJOR_VERSION, ERL_NIF_MINOR_VERSION);
}
else if (entry->minor >= 1
&& sys_strcmp(entry->vm_variant, ERL_NIF_VM_VARIANT) != 0) {
ret = load_nif_error(BIF_P, bad_lib, "Library (%s) not compiled for "
"this vm variant (%s).",
entry->vm_variant, ERL_NIF_VM_VARIANT);
}
else if (!erts_is_atom_str((char*)entry->name, mod_atom)) {
ret = load_nif_error(BIF_P, bad_lib, "Library module name '%s' does not"
" match calling module '%T'", entry->name, mod_atom);
}
else {
/*erts_fprintf(stderr, "Found module %T\r\n", mod_atom);*/
for (i=0; i < entry->num_of_funcs && ret==am_ok; i++) {
BeamInstr** code_pp;
ErlNifFunc* f = &entry->funcs[i];
if (!erts_atom_get(f->name, sys_strlen(f->name), &f_atom)
|| (code_pp = get_func_pp(mod->code, f_atom, f->arity))==NULL) {
ret = load_nif_error(BIF_P,bad_lib,"Function not found %T:%s/%u",
mod_atom, f->name, f->arity);
}
else if (code_pp[1] - code_pp[0] < (5+3)) {
ret = load_nif_error(BIF_P,bad_lib,"No explicit call to load_nif"
" in module (%T:%s/%u to small)",
mod_atom, entry->funcs[i].name, entry->funcs[i].arity);
}
/*erts_fprintf(stderr, "Found NIF %T:%s/%u\r\n",
mod_atom, entry->funcs[i].name, entry->funcs[i].arity);*/
}
}
if (ret != am_ok) {
goto error;
}
/* Call load, reload or upgrade:
*/
lib = erts_alloc(ERTS_ALC_T_NIF, sizeof(struct erl_module_nif));
lib->handle = handle;
lib->entry = entry;
erts_refc_init(&lib->rt_cnt, 0);
erts_refc_init(&lib->rt_dtor_cnt, 0);
lib->mod = mod;
env.mod_nif = lib;
if (mod->nif != NULL) { /* Reload */
int k;
lib->priv_data = mod->nif->priv_data;
ASSERT(mod->nif->entry != NULL);
if (entry->reload == NULL) {
ret = load_nif_error(BIF_P,reload,"Reload not supported by this NIF library.");
goto error;
}
/* Check that no NIF is removed */
for (k=0; k < mod->nif->entry->num_of_funcs; k++) {
ErlNifFunc* old_func = &mod->nif->entry->funcs[k];
for (i=0; i < entry->num_of_funcs; i++) {
if (old_func->arity == entry->funcs[i].arity
&& sys_strcmp(old_func->name, entry->funcs[i].name) == 0) {
break;
}
}
if (i == entry->num_of_funcs) {
ret = load_nif_error(BIF_P,reload,"Reloaded library missing "
"function %T:%s/%u\r\n", mod_atom,
old_func->name, old_func->arity);
goto error;
}
}
erts_pre_nif(&env, BIF_P, lib);
veto = entry->reload(&env, &lib->priv_data, BIF_ARG_2);
erts_post_nif(&env);
if (veto) {
ret = load_nif_error(BIF_P, reload, "Library reload-call unsuccessful.");
}
else {
mod->nif->entry = NULL; /* to prevent 'unload' callback */
erts_unload_nif(mod->nif);
}
}
else {
lib->priv_data = NULL;
if (mod->old_nif != NULL) { /* Upgrade */
void* prev_old_data = mod->old_nif->priv_data;
if (entry->upgrade == NULL) {
ret = load_nif_error(BIF_P, upgrade, "Upgrade not supported by this NIF library.");
goto error;
}
erts_pre_nif(&env, BIF_P, lib);
veto = entry->upgrade(&env, &lib->priv_data, &mod->old_nif->priv_data, BIF_ARG_2);
erts_post_nif(&env);
if (veto) {
mod->old_nif->priv_data = prev_old_data;
ret = load_nif_error(BIF_P, upgrade, "Library upgrade-call unsuccessful.");
}
/*else if (mod->old_nif->priv_data != prev_old_data) {
refresh_cached_nif_data(mod->old_code, mod->old_nif);
}*/
}
else if (entry->load != NULL) { /* Initial load */
erts_pre_nif(&env, BIF_P, lib);
veto = entry->load(&env, &lib->priv_data, BIF_ARG_2);
erts_post_nif(&env);
if (veto) {
ret = load_nif_error(BIF_P, "load", "Library load-call unsuccessful.");
}
}
}
if (ret == am_ok) {
/*
** Everything ok, patch the beam code with op_call_nif
*/
mod->nif = lib;
for (i=0; i < entry->num_of_funcs; i++)
{
BeamInstr* code_ptr;
erts_atom_get(entry->funcs[i].name, sys_strlen(entry->funcs[i].name), &f_atom);
code_ptr = *get_func_pp(mod->code, f_atom, entry->funcs[i].arity);
if (code_ptr[1] == 0) {
code_ptr[5+0] = (BeamInstr) BeamOp(op_call_nif);
}
else { /* Function traced, patch the original instruction word */
BpData** bps = (BpData**) code_ptr[1];
BpData* bp = (BpData*) bps[erts_bp_sched2ix()];
bp->orig_instr = (BeamInstr) BeamOp(op_call_nif);
}
code_ptr[5+1] = (BeamInstr) entry->funcs[i].fptr;
code_ptr[5+2] = (BeamInstr) lib;
}
}
else {
error:
ASSERT(ret != am_ok);
if (lib != NULL) {
erts_free(ERTS_ALC_T_NIF, lib);
}
if (handle != NULL) {
erts_sys_ddll_close(handle);
}
erts_sys_ddll_free_error(&errdesc);
}
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_free(ERTS_ALC_T_TMP, lib_name);
BIF_RET(ret);
}
BIF_RETTYPE
erts_debug_disassemble_1(BIF_ALIST_1)
{
Process* p = BIF_P;
Eterm addr = BIF_ARG_1;
erts_dsprintf_buf_t *dsbufp;
Eterm* hp;
Eterm* tp;
Eterm bin;
Eterm mfa;
ErtsCodeMFA *cmfa = NULL;
BeamCodeHeader* code_hdr;
BeamInstr *code_ptr;
BeamInstr instr;
BeamInstr uaddr;
Uint hsz;
int i;
if (term_to_UWord(addr, &uaddr)) {
code_ptr = (BeamInstr *) uaddr;
if ((cmfa = find_function_from_pc(code_ptr)) == NULL) {
BIF_RET(am_false);
}
} else if (is_tuple(addr)) {
ErtsCodeIndex code_ix;
Module* modp;
Eterm mod;
Eterm name;
Export* ep;
Sint arity;
int n;
tp = tuple_val(addr);
if (tp[0] != make_arityval(3)) {
error:
BIF_ERROR(p, BADARG);
}
mod = tp[1];
name = tp[2];
if (!is_atom(mod) || !is_atom(name) || !is_small(tp[3])) {
goto error;
}
arity = signed_val(tp[3]);
code_ix = erts_active_code_ix();
modp = erts_get_module(mod, code_ix);
/*
* Try the export entry first to allow disassembly of special functions
* such as erts_debug:apply/4. Then search for it in the module.
*/
if ((ep = erts_find_function(mod, name, arity, code_ix)) != NULL) {
/* XXX: add "&& ep->address != ep->code" condition?
* Consider a traced function.
* Its ep will have ep->address == ep->code.
* erts_find_function() will return the non-NULL ep.
* Below we'll try to derive a code_ptr from ep->address.
* But this code_ptr will point to the start of the Export,
* not the function's func_info instruction. BOOM !?
*/
cmfa = erts_code_to_codemfa(ep->addressv[code_ix]);
} else if (modp == NULL || (code_hdr = modp->curr.code_hdr) == NULL) {
BIF_RET(am_undef);
} else {
n = code_hdr->num_functions;
for (i = 0; i < n; i++) {
cmfa = &code_hdr->functions[i]->mfa;
if (cmfa->function == name && cmfa->arity == arity) {
break;
}
}
if (i == n) {
BIF_RET(am_undef);
}
}
code_ptr = (BeamInstr*)erts_code_to_codeinfo(erts_codemfa_to_code(cmfa));
} else {
goto error;
}
dsbufp = erts_create_tmp_dsbuf(0);
erts_print(ERTS_PRINT_DSBUF, (void *) dsbufp, HEXF ": ", code_ptr);
instr = (BeamInstr) code_ptr[0];
for (i = 0; i < NUM_SPECIFIC_OPS; i++) {
if (BeamIsOpCode(instr, i) && opc[i].name[0] != '\0') {
code_ptr += print_op(ERTS_PRINT_DSBUF, (void *) dsbufp,
i, opc[i].sz-1, code_ptr) + 1;
break;
}
}
if (i >= NUM_SPECIFIC_OPS) {
erts_print(ERTS_PRINT_DSBUF, (void *) dsbufp,
"unknown " HEXF "\n", instr);
code_ptr++;
}
bin = new_binary(p, (byte *) dsbufp->str, dsbufp->str_len);
erts_destroy_tmp_dsbuf(dsbufp);
hsz = 4+4;
(void) erts_bld_uword(NULL, &hsz, (BeamInstr) code_ptr);
hp = HAlloc(p, hsz);
addr = erts_bld_uword(&hp, NULL, (BeamInstr) code_ptr);
ASSERT(is_atom(cmfa->module) || is_nil(cmfa->module));
ASSERT(is_atom(cmfa->function) || is_nil(cmfa->function));
mfa = TUPLE3(hp, cmfa->module, cmfa->function,
make_small(cmfa->arity));
hp += 4;
return TUPLE3(hp, addr, bin, mfa);
}
Eterm
load_module_2(BIF_ALIST_2)
{
Eterm reason;
Eterm* hp;
int i;
int sz;
byte* code;
int trace_pattern_is_on;
Binary *match_spec;
Binary *meta_match_spec;
struct trace_pattern_flags trace_pattern_flags;
Eterm meta_tracer_pid;
Eterm res;
byte* temp_alloc = NULL;
if (is_not_atom(BIF_ARG_1)) {
error:
erts_free_aligned_binary_bytes(temp_alloc);
BIF_ERROR(BIF_P, BADARG);
}
if ((code = erts_get_aligned_binary_bytes(BIF_ARG_2, &temp_alloc)) == NULL) {
goto error;
}
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_block_system(0);
erts_export_consolidate();
hp = HAlloc(BIF_P, 3);
sz = binary_size(BIF_ARG_2);
if ((i = erts_load_module(BIF_P, 0,
BIF_P->group_leader, &BIF_ARG_1, code, sz)) < 0) {
switch (i) {
case -1: reason = am_badfile; break;
case -2: reason = am_nofile; break;
case -3: reason = am_not_purged; break;
case -4:
reason = am_atom_put("native_code", sizeof("native_code")-1);
break;
default: reason = am_badfile; break;
}
res = TUPLE2(hp, am_error, reason);
goto done;
}
erts_get_default_trace_pattern(&trace_pattern_is_on,
&match_spec,
&meta_match_spec,
&trace_pattern_flags,
&meta_tracer_pid);
if (trace_pattern_is_on) {
Eterm mfa[1];
mfa[0] = BIF_ARG_1;
(void) erts_set_trace_pattern(mfa, 1,
match_spec,
meta_match_spec,
1, trace_pattern_flags,
meta_tracer_pid);
}
res = TUPLE2(hp, am_module, BIF_ARG_1);
done:
erts_free_aligned_binary_bytes(temp_alloc);
erts_smp_release_system();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
BIF_RET(res);
}