/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1999-2013. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "sys.h"
#include "erl_vm.h"
#include "global.h"
#include "erl_process.h"
#include "error.h"
#include "erl_driver.h"
#include "bif.h"
#include "big.h"
#include "erl_version.h"
#include "erl_compile_flags.h"
#include "erl_db_util.h"
#include "erl_message.h"
#include "erl_binary.h"
#include "erl_db.h"
#include "erl_instrument.h"
#include "dist.h"
#include "erl_gc.h"
#include "erl_cpu_topology.h"
#include "erl_async.h"
#include "erl_thr_progress.h"
#define ERTS_PTAB_WANT_DEBUG_FUNCS__
#include "erl_ptab.h"
#ifdef HIPE
#include "hipe_arch.h"
#endif
#ifdef ERTS_ENABLE_LOCK_COUNT
#include "erl_lock_count.h"
#endif
#ifdef VALGRIND
#include <valgrind/valgrind.h>
#include <valgrind/memcheck.h>
#endif
static Export* alloc_info_trap = NULL;
static Export* alloc_sizes_trap = NULL;
static Export *gather_sched_wall_time_res_trap;
static Export *gather_gc_info_res_trap;
#define DECL_AM(S) Eterm AM_ ## S = am_atom_put(#S, sizeof(#S) - 1)
static char otp_correction_package[] = ERLANG_OTP_CORRECTION_PACKAGE;
/* Keep erts_system_version as a global variable for easy access from a core */
static char erts_system_version[] = ("Erlang/OTP " ERLANG_OTP_RELEASE
"%s"
" [erts-" ERLANG_VERSION "]"
#if !HEAP_ON_C_STACK && !HALFWORD_HEAP
" [no-c-stack-objects]"
#endif
#ifndef OTP_RELEASE
#ifdef ERLANG_GIT_VERSION
" [source-" ERLANG_GIT_VERSION "]"
#else
" [source]"
#endif
#endif
#ifdef ARCH_64
#if HALFWORD_HEAP
" [64-bit halfword]"
#else
" [64-bit]"
#endif
#endif
#ifdef ERTS_SMP
" [smp:%beu:%beu]"
#endif
#ifdef USE_THREADS
" [async-threads:%d]"
#endif
#ifdef HIPE
" [hipe]"
#endif
#ifdef ERTS_ENABLE_KERNEL_POLL
" [kernel-poll:%s]"
#endif
#ifdef ET_DEBUG
#if ET_DEBUG
" [type-assertions]"
#endif
#endif
#ifdef DEBUG
" [debug-compiled]"
#endif
#ifdef ERTS_ENABLE_LOCK_CHECK
" [lock-checking]"
#endif
#ifdef ERTS_ENABLE_LOCK_COUNT
" [lock-counting]"
#endif
#ifdef PURIFY
" [purify-compiled]"
#endif
#ifdef VALGRIND
" [valgrind-compiled]"
#endif
#ifdef ERTS_FRMPTR
" [frame-pointer]"
#endif
#ifdef USE_DTRACE
" [dtrace]"
#endif
#ifdef USE_SYSTEMTAP
" [systemtap]"
#endif
"\n");
#define ASIZE(a) (sizeof(a)/sizeof(a[0]))
#if defined(HAVE_SOLARIS_SPARC_PERFMON)
# include <sys/ioccom.h>
# define PERFMON_SETPCR _IOW('P', 1, unsigned long long)
# define PERFMON_GETPCR _IOR('P', 2, unsigned long long)
#endif
/* Cached, pre-built {OsType,OsFlavor} and {Major,Minor,Build} tuples */
static Eterm os_type_tuple;
static Eterm os_version_tuple;
static Eterm
current_function(Process* p, Process* rp, Eterm** hpp, int full_info);
static Eterm current_stacktrace(Process* p, Process* rp, Eterm** hpp);
static Eterm
bld_bin_list(Uint **hpp, Uint *szp, ErlOffHeap* oh)
{
struct erl_off_heap_header* ohh;
Eterm res = NIL;
Eterm tuple;
for (ohh = oh->first; ohh; ohh = ohh->next) {
if (ohh->thing_word == HEADER_PROC_BIN) {
ProcBin* pb = (ProcBin*) ohh;
Eterm val = erts_bld_uword(hpp, szp, (UWord) pb->val);
Eterm orig_size = erts_bld_uint(hpp, szp, pb->val->orig_size);
if (szp)
*szp += 4+2;
if (hpp) {
Uint refc = (Uint) erts_smp_atomic_read_nob(&pb->val->refc);
tuple = TUPLE3(*hpp, val, orig_size, make_small(refc));
res = CONS(*hpp + 4, tuple, res);
*hpp += 4+2;
}
}
}
return res;
}
/*
make_monitor_list:
returns a list of records..
-record(erl_monitor, {
type, % MON_ORIGIN or MON_TARGET (1 or 3)
ref,
pid, % Process or nodename
name % registered name or []
}).
*/
static void do_calc_mon_size(ErtsMonitor *mon, void *vpsz)
{
Uint *psz = vpsz;
*psz += IS_CONST(mon->ref) ? 0 : NC_HEAP_SIZE(mon->ref);
*psz += IS_CONST(mon->pid) ? 0 : NC_HEAP_SIZE(mon->pid);
*psz += 8; /* CONS + 5-tuple */
}
typedef struct {
Process *p;
Eterm *hp;
Eterm res;
Eterm tag;
} MonListContext;
static void do_make_one_mon_element(ErtsMonitor *mon, void * vpmlc)
{
MonListContext *pmlc = vpmlc;
Eterm tup;
Eterm r = (IS_CONST(mon->ref)
? mon->ref
: STORE_NC(&(pmlc->hp), &MSO(pmlc->p), mon->ref));
Eterm p = (IS_CONST(mon->pid)
? mon->pid
: STORE_NC(&(pmlc->hp), &MSO(pmlc->p), mon->pid));
tup = TUPLE5(pmlc->hp, pmlc->tag, make_small(mon->type), r, p, mon->name);
pmlc->hp += 6;
pmlc->res = CONS(pmlc->hp, tup, pmlc->res);
pmlc->hp += 2;
}
static Eterm
make_monitor_list(Process *p, ErtsMonitor *root)
{
DECL_AM(erl_monitor);
Uint sz = 0;
MonListContext mlc;
erts_doforall_monitors(root, &do_calc_mon_size, &sz);
if (sz == 0) {
return NIL;
}
mlc.p = p;
mlc.hp = HAlloc(p,sz);
mlc.res = NIL;
mlc.tag = AM_erl_monitor;
erts_doforall_monitors(root, &do_make_one_mon_element, &mlc);
return mlc.res;
}
/*
make_link_list:
returns a list of records..
-record(erl_link, {
type, % LINK_NODE or LINK_PID (1 or 3)
pid, % Process or nodename
targets % List of erl_link's or nil
}).
*/
static void do_calc_lnk_size(ErtsLink *lnk, void *vpsz)
{
Uint *psz = vpsz;
*psz += IS_CONST(lnk->pid) ? 0 : NC_HEAP_SIZE(lnk->pid);
if (lnk->type != LINK_NODE && ERTS_LINK_ROOT(lnk) != NULL) {
/* Node links use this pointer as ref counter... */
erts_doforall_links(ERTS_LINK_ROOT(lnk),&do_calc_lnk_size,vpsz);
}
*psz += 7; /* CONS + 4-tuple */
}
typedef struct {
Process *p;
Eterm *hp;
Eterm res;
Eterm tag;
} LnkListContext;
static void do_make_one_lnk_element(ErtsLink *lnk, void * vpllc)
{
LnkListContext *pllc = vpllc;
Eterm tup;
Eterm old_res, targets = NIL;
Eterm p = (IS_CONST(lnk->pid)
? lnk->pid
: STORE_NC(&(pllc->hp), &MSO(pllc->p), lnk->pid));
if (lnk->type == LINK_NODE) {
targets = make_small(ERTS_LINK_REFC(lnk));
} else if (ERTS_LINK_ROOT(lnk) != NULL) {
old_res = pllc->res;
pllc->res = NIL;
erts_doforall_links(ERTS_LINK_ROOT(lnk),&do_make_one_lnk_element, vpllc);
targets = pllc->res;
pllc->res = old_res;
}
tup = TUPLE4(pllc->hp, pllc->tag, make_small(lnk->type), p, targets);
pllc->hp += 5;
pllc->res = CONS(pllc->hp, tup, pllc->res);
pllc->hp += 2;
}
static Eterm
make_link_list(Process *p, ErtsLink *root, Eterm tail)
{
DECL_AM(erl_link);
Uint sz = 0;
LnkListContext llc;
erts_doforall_links(root, &do_calc_lnk_size, &sz);
if (sz == 0) {
return tail;
}
llc.p = p;
llc.hp = HAlloc(p,sz);
llc.res = tail;
llc.tag = AM_erl_link;
erts_doforall_links(root, &do_make_one_lnk_element, &llc);
return llc.res;
}
int
erts_print_system_version(int to, void *arg, Process *c_p)
{
int i, rc = -1;
char *rc_str = "";
char rc_buf[100];
char *ocp = otp_correction_package;
#ifdef ERTS_SMP
Uint total, online, active;
(void) erts_schedulers_state(&total, &online, &active, 0);
#endif
for (i = 0; i < sizeof(otp_correction_package)-4; i++) {
if (ocp[i] == '-' && ocp[i+1] == 'r' && ocp[i+2] == 'c')
rc = atoi(&ocp[i+3]);
}
if (rc >= 0) {
if (rc == 0)
rc_str = " [DEVELOPMENT]";
else {
erts_snprintf(rc_buf, sizeof(rc_buf), " [RELEASE CANDIDATE %d]", rc);
rc_str = rc_buf;
}
}
return erts_print(to, arg, erts_system_version,
rc_str
#ifdef ERTS_SMP
, total, online
#endif
#ifdef USE_THREADS
, erts_async_max_threads
#endif
#ifdef ERTS_ENABLE_KERNEL_POLL
, erts_use_kernel_poll ? "true" : "false"
#endif
);
}
typedef struct {
Eterm entity;
Eterm node;
} MonitorInfo;
typedef struct {
MonitorInfo *mi;
Uint mi_i;
Uint mi_max;
int sz;
} MonitorInfoCollection;
#define INIT_MONITOR_INFOS(MIC) do { \
(MIC).mi = NULL; \
(MIC).mi_i = (MIC).mi_max = 0; \
(MIC).sz = 0; \
} while(0)
#define MI_INC 50
#define EXTEND_MONITOR_INFOS(MICP) \
do { \
if ((MICP)->mi_i >= (MICP)->mi_max) { \
(MICP)->mi = ((MICP)->mi ? erts_realloc(ERTS_ALC_T_TMP, \
(MICP)->mi, \
((MICP)->mi_max+MI_INC) \
* sizeof(MonitorInfo)) \
: erts_alloc(ERTS_ALC_T_TMP, \
MI_INC*sizeof(MonitorInfo))); \
(MICP)->mi_max += MI_INC; \
} \
} while (0)
#define DESTROY_MONITOR_INFOS(MIC) \
do { \
if ((MIC).mi != NULL) { \
erts_free(ERTS_ALC_T_TMP, (void *) (MIC).mi); \
} \
} while (0)
static void collect_one_link(ErtsLink *lnk, void *vmicp)
{
MonitorInfoCollection *micp = vmicp;
EXTEND_MONITOR_INFOS(micp);
if (!(lnk->type == LINK_PID)) {
return;
}
micp->mi[micp->mi_i].entity = lnk->pid;
micp->sz += 2 + NC_HEAP_SIZE(lnk->pid);
micp->mi_i++;
}
static void collect_one_origin_monitor(ErtsMonitor *mon, void *vmicp)
{
MonitorInfoCollection *micp = vmicp;
if (mon->type != MON_ORIGIN) {
return;
}
EXTEND_MONITOR_INFOS(micp);
if (is_atom(mon->pid)) { /* external by name */
micp->mi[micp->mi_i].entity = mon->name;
micp->mi[micp->mi_i].node = mon->pid;
micp->sz += 3; /* need one 2-tuple */
} else if (is_external_pid(mon->pid)) { /* external by pid */
micp->mi[micp->mi_i].entity = mon->pid;
micp->mi[micp->mi_i].node = NIL;
micp->sz += NC_HEAP_SIZE(mon->pid);
} else if (!is_nil(mon->name)) { /* internal by name */
micp->mi[micp->mi_i].entity = mon->name;
micp->mi[micp->mi_i].node = erts_this_dist_entry->sysname;
micp->sz += 3; /* need one 2-tuple */
} else { /* internal by pid */
micp->mi[micp->mi_i].entity = mon->pid;
micp->mi[micp->mi_i].node = NIL;
/* no additional heap space needed */
}
micp->mi_i++;
micp->sz += 2 + 3; /* For a cons cell and a 2-tuple */
}
static void collect_one_target_monitor(ErtsMonitor *mon, void *vmicp)
{
MonitorInfoCollection *micp = vmicp;
if (mon->type != MON_TARGET) {
return;
}
EXTEND_MONITOR_INFOS(micp);
micp->mi[micp->mi_i].node = NIL;
micp->mi[micp->mi_i].entity = mon->pid;
micp->sz += (NC_HEAP_SIZE(mon->pid) + 2 /* cons */);
micp->mi_i++;
}
typedef struct {
Process *c_p;
ErtsProcLocks c_p_locks;
ErtsSuspendMonitor **smi;
Uint smi_i;
Uint smi_max;
int sz;
} ErtsSuspendMonitorInfoCollection;
#define ERTS_INIT_SUSPEND_MONITOR_INFOS(SMIC, CP, CPL) do { \
(SMIC).c_p = (CP); \
(SMIC).c_p_locks = (CPL); \
(SMIC).smi = NULL; \
(SMIC).smi_i = (SMIC).smi_max = 0; \
(SMIC).sz = 0; \
} while(0)
#define ERTS_SMI_INC 50
#define ERTS_EXTEND_SUSPEND_MONITOR_INFOS(SMICP) \
do { \
if ((SMICP)->smi_i >= (SMICP)->smi_max) { \
(SMICP)->smi = ((SMICP)->smi \
? erts_realloc(ERTS_ALC_T_TMP, \
(SMICP)->smi, \
((SMICP)->smi_max \
+ ERTS_SMI_INC) \
* sizeof(ErtsSuspendMonitor *)) \
: erts_alloc(ERTS_ALC_T_TMP, \
ERTS_SMI_INC \
* sizeof(ErtsSuspendMonitor *))); \
(SMICP)->smi_max += ERTS_SMI_INC; \
} \
} while (0)
#define ERTS_DESTROY_SUSPEND_MONITOR_INFOS(SMIC) \
do { \
if ((SMIC).smi != NULL) { \
erts_free(ERTS_ALC_T_TMP, (void *) (SMIC).smi); \
} \
} while (0)
static void
collect_one_suspend_monitor(ErtsSuspendMonitor *smon, void *vsmicp)
{
ErtsSuspendMonitorInfoCollection *smicp = vsmicp;
Process *suspendee = erts_pid2proc(smicp->c_p,
smicp->c_p_locks,
smon->pid,
0);
if (suspendee) { /* suspendee is alive */
Sint a, p;
if (smon->active) {
smon->active += smon->pending;
smon->pending = 0;
}
ASSERT((smon->active && !smon->pending)
|| (smon->pending && !smon->active));
ERTS_EXTEND_SUSPEND_MONITOR_INFOS(smicp);
smicp->smi[smicp->smi_i] = smon;
smicp->sz += 2 /* cons */ + 4 /* 3-tuple */;
a = (Sint) smon->active; /* quiet compiler warnings */
p = (Sint) smon->pending; /* on 64-bit machines */
if (!IS_SSMALL(a))
smicp->sz += BIG_UINT_HEAP_SIZE;
if (!IS_SSMALL(p))
smicp->sz += BIG_UINT_HEAP_SIZE;
smicp->smi_i++;
}
}
/*
* process_info/[1,2]
*/
#define ERTS_PI_FAIL_TYPE_BADARG 0
#define ERTS_PI_FAIL_TYPE_YIELD 1
#define ERTS_PI_FAIL_TYPE_AWAIT_EXIT 2
static ERTS_INLINE ErtsProcLocks
pi_locks(Eterm info)
{
switch (info) {
case am_status:
case am_priority:
return ERTS_PROC_LOCK_STATUS;
case am_links:
case am_monitors:
case am_monitored_by:
case am_suspending:
return ERTS_PROC_LOCK_LINK;
case am_messages:
case am_message_queue_len:
case am_total_heap_size:
return ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_MSGQ;
case am_memory:
return ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_LINK|ERTS_PROC_LOCK_MSGQ;
default:
return ERTS_PROC_LOCK_MAIN;
}
}
/*
* All valid process_info arguments.
*/
static Eterm pi_args[] = {
am_registered_name,
am_current_function,
am_initial_call,
am_status,
am_messages,
am_message_queue_len,
am_links,
am_monitors,
am_monitored_by,
am_dictionary,
am_trap_exit,
am_error_handler,
am_heap_size,
am_stack_size,
am_memory,
am_garbage_collection,
am_group_leader,
am_reductions,
am_priority,
am_trace,
am_binary,
am_sequential_trace_token,
am_catchlevel,
am_backtrace,
am_last_calls,
am_total_heap_size,
am_suspending,
am_min_heap_size,
am_min_bin_vheap_size,
am_current_location,
am_current_stacktrace,
};
#define ERTS_PI_ARGS ((int) (sizeof(pi_args)/sizeof(Eterm)))
static ERTS_INLINE Eterm
pi_ix2arg(int ix)
{
if (ix < 0 || ERTS_PI_ARGS <= ix)
return am_undefined;
return pi_args[ix];
}
static ERTS_INLINE int
pi_arg2ix(Eterm arg)
{
switch (arg) {
case am_registered_name: return 0;
case am_current_function: return 1;
case am_initial_call: return 2;
case am_status: return 3;
case am_messages: return 4;
case am_message_queue_len: return 5;
case am_links: return 6;
case am_monitors: return 7;
case am_monitored_by: return 8;
case am_dictionary: return 9;
case am_trap_exit: return 10;
case am_error_handler: return 11;
case am_heap_size: return 12;
case am_stack_size: return 13;
case am_memory: return 14;
case am_garbage_collection: return 15;
case am_group_leader: return 16;
case am_reductions: return 17;
case am_priority: return 18;
case am_trace: return 19;
case am_binary: return 20;
case am_sequential_trace_token: return 21;
case am_catchlevel: return 22;
case am_backtrace: return 23;
case am_last_calls: return 24;
case am_total_heap_size: return 25;
case am_suspending: return 26;
case am_min_heap_size: return 27;
case am_min_bin_vheap_size: return 28;
case am_current_location: return 29;
case am_current_stacktrace: return 30;
default: return -1;
}
}
static Eterm pi_1_keys[] = {
am_registered_name,
am_current_function,
am_initial_call,
am_status,
am_message_queue_len,
am_messages,
am_links,
am_dictionary,
am_trap_exit,
am_error_handler,
am_priority,
am_group_leader,
am_total_heap_size,
am_heap_size,
am_stack_size,
am_reductions,
am_garbage_collection,
am_suspending
};
#define ERTS_PI_1_NO_OF_KEYS (sizeof(pi_1_keys)/sizeof(Eterm))
static Eterm pi_1_keys_list;
#if HEAP_ON_C_STACK
static Eterm pi_1_keys_list_heap[2*ERTS_PI_1_NO_OF_KEYS];
#endif
static void
process_info_init(void)
{
#if HEAP_ON_C_STACK
Eterm *hp = &pi_1_keys_list_heap[0];
#else
Eterm *hp = erts_alloc(ERTS_ALC_T_LL_TEMP_TERM,sizeof(Eterm)*2*ERTS_PI_1_NO_OF_KEYS);
#endif
int i;
pi_1_keys_list = NIL;
for (i = ERTS_PI_1_NO_OF_KEYS-1; i >= 0; i--) {
pi_1_keys_list = CONS(hp, pi_1_keys[i], pi_1_keys_list);
hp += 2;
}
#ifdef DEBUG
{ /* Make sure the process_info argument mappings are consistent */
int ix;
for (ix = 0; ix < ERTS_PI_ARGS; ix++) {
ASSERT(pi_arg2ix(pi_ix2arg(ix)) == ix);
}
}
#endif
}
static ERTS_INLINE Process *
pi_pid2proc(Process *c_p, Eterm pid, ErtsProcLocks info_locks)
{
#ifdef ERTS_SMP
/*
* If the main lock is needed, we use erts_pid2proc_not_running()
* instead of erts_pid2proc() for two reasons:
* * Current function of pid and possibly other information will
* have been updated so that process_info() is consistent with an
* info-request/info-response signal model.
* * We avoid blocking the whole scheduler executing the
* process that is calling process_info() for a long time
* which will happen if pid is currently running.
* The caller of process_info() may have to yield if pid
* is currently running.
*/
if (info_locks & ERTS_PROC_LOCK_MAIN)
return erts_pid2proc_not_running(c_p, ERTS_PROC_LOCK_MAIN,
pid, info_locks);
else
#endif
return erts_pid2proc(c_p, ERTS_PROC_LOCK_MAIN,
pid, info_locks);
}
BIF_RETTYPE
process_info_aux(Process *BIF_P,
Process *rp,
Eterm rpid,
Eterm item,
int always_wrap);
#define ERTS_PI_RES_ELEM_IX_BUF_INC 1024
#define ERTS_PI_DEF_RES_ELEM_IX_BUF_SZ ERTS_PI_ARGS
static Eterm
process_info_list(Process *c_p, Eterm pid, Eterm list, int always_wrap,
int *fail_type)
{
int want_messages = 0;
int def_res_elem_ix_buf[ERTS_PI_DEF_RES_ELEM_IX_BUF_SZ];
int *res_elem_ix = &def_res_elem_ix_buf[0];
int res_elem_ix_ix = -1;
int res_elem_ix_sz = ERTS_PI_DEF_RES_ELEM_IX_BUF_SZ;
Eterm part_res[ERTS_PI_ARGS];
Eterm res, arg;
Uint *hp, *hp_end;
ErtsProcLocks locks = (ErtsProcLocks) 0;
int res_len, ix;
Process *rp = NULL;
*fail_type = ERTS_PI_FAIL_TYPE_BADARG;
for (ix = 0; ix < ERTS_PI_ARGS; ix++)
part_res[ix] = THE_NON_VALUE;
ASSERT(is_list(list));
while (is_list(list)) {
Eterm* consp = list_val(list);
arg = CAR(consp);
ix = pi_arg2ix(arg);
if (ix < 0) {
res = THE_NON_VALUE;
goto done;
}
if (arg == am_messages)
want_messages = 1;
locks |= pi_locks(arg);
res_elem_ix_ix++;
if (res_elem_ix_ix >= res_elem_ix_sz) {
if (res_elem_ix != &def_res_elem_ix_buf[0])
res_elem_ix =
erts_realloc(ERTS_ALC_T_TMP,
res_elem_ix,
sizeof(int)*(res_elem_ix_sz
+= ERTS_PI_RES_ELEM_IX_BUF_INC));
else {
int new_res_elem_ix_sz = ERTS_PI_RES_ELEM_IX_BUF_INC;
int *new_res_elem_ix = erts_alloc(ERTS_ALC_T_TMP,
sizeof(int)*new_res_elem_ix_sz);
sys_memcpy((void *) new_res_elem_ix,
(void *) res_elem_ix,
sizeof(int)*res_elem_ix_sz);
res_elem_ix = new_res_elem_ix;
res_elem_ix_sz = new_res_elem_ix_sz;
}
}
res_elem_ix[res_elem_ix_ix] = ix;
list = CDR(consp);
}
if (is_not_nil(list)) {
res = THE_NON_VALUE;
goto done;
}
res_len = res_elem_ix_ix+1;
ASSERT(res_len > 0);
rp = pi_pid2proc(c_p, pid, locks|ERTS_PROC_LOCK_STATUS);
if (!rp) {
res = am_undefined;
goto done;
}
else if (rp == ERTS_PROC_LOCK_BUSY) {
rp = NULL;
res = THE_NON_VALUE;
*fail_type = ERTS_PI_FAIL_TYPE_YIELD;
goto done;
}
else if (c_p != rp && ERTS_PROC_PENDING_EXIT(rp)) {
locks |= ERTS_PROC_LOCK_STATUS;
res = THE_NON_VALUE;
*fail_type = ERTS_PI_FAIL_TYPE_AWAIT_EXIT;
goto done;
}
else if (!(locks & ERTS_PROC_LOCK_STATUS)) {
erts_smp_proc_unlock(rp, ERTS_PROC_LOCK_STATUS);
}
/*
* We always handle 'messages' first if it should be part
* of the result. This since if both 'messages' and
* 'message_queue_len' are wanted, 'messages' may
* change the result of 'message_queue_len' (in case
* the queue contain bad distribution messages).
*/
if (want_messages) {
ix = pi_arg2ix(am_messages);
ASSERT(part_res[ix] == THE_NON_VALUE);
part_res[ix] = process_info_aux(c_p, rp, pid, am_messages, always_wrap);
ASSERT(part_res[ix] != THE_NON_VALUE);
}
for (; res_elem_ix_ix >= 0; res_elem_ix_ix--) {
ix = res_elem_ix[res_elem_ix_ix];
if (part_res[ix] == THE_NON_VALUE) {
arg = pi_ix2arg(ix);
part_res[ix] = process_info_aux(c_p, rp, pid, arg, always_wrap);
ASSERT(part_res[ix] != THE_NON_VALUE);
}
}
hp = HAlloc(c_p, res_len*2);
hp_end = hp + res_len*2;
res = NIL;
for (res_elem_ix_ix = res_len - 1; res_elem_ix_ix >= 0; res_elem_ix_ix--) {
ix = res_elem_ix[res_elem_ix_ix];
ASSERT(part_res[ix] != THE_NON_VALUE);
/*
* If we should ignore the value of registered_name,
* its value is nil. For more info, see comment in the
* beginning of process_info_aux().
*/
if (is_nil(part_res[ix])) {
ASSERT(!always_wrap);
ASSERT(pi_ix2arg(ix) == am_registered_name);
}
else {
res = CONS(hp, part_res[ix], res);
hp += 2;
}
}
if (!always_wrap) {
HRelease(c_p, hp_end, hp);
}
done:
if (c_p == rp)
locks &= ~ERTS_PROC_LOCK_MAIN;
if (locks && rp)
erts_smp_proc_unlock(rp, locks);
if (res_elem_ix != &def_res_elem_ix_buf[0])
erts_free(ERTS_ALC_T_TMP, res_elem_ix);
return res;
}
BIF_RETTYPE process_info_1(BIF_ALIST_1)
{
Eterm res;
int fail_type;
if (is_external_pid(BIF_ARG_1)
&& external_pid_dist_entry(BIF_ARG_1) == erts_this_dist_entry)
BIF_RET(am_undefined);
if (is_not_internal_pid(BIF_ARG_1)) {
BIF_ERROR(BIF_P, BADARG);
}
res = process_info_list(BIF_P, BIF_ARG_1, pi_1_keys_list, 0, &fail_type);
if (is_non_value(res)) {
switch (fail_type) {
case ERTS_PI_FAIL_TYPE_BADARG:
BIF_ERROR(BIF_P, BADARG);
case ERTS_PI_FAIL_TYPE_YIELD:
ERTS_BIF_YIELD1(bif_export[BIF_process_info_1], BIF_P, BIF_ARG_1);
case ERTS_PI_FAIL_TYPE_AWAIT_EXIT:
ERTS_BIF_AWAIT_X_DATA_TRAP(BIF_P, BIF_ARG_1, am_undefined);
default:
erl_exit(ERTS_ABORT_EXIT, "%s:%d: Internal error", __FILE__, __LINE__);
}
}
ASSERT(!(BIF_P->flags & F_P2PNR_RESCHED));
BIF_RET(res);
}
BIF_RETTYPE process_info_2(BIF_ALIST_2)
{
Eterm res;
Process *rp;
Eterm pid = BIF_ARG_1;
ErtsProcLocks info_locks;
int fail_type;
if (is_external_pid(pid)
&& external_pid_dist_entry(pid) == erts_this_dist_entry)
BIF_RET(am_undefined);
if (is_not_internal_pid(pid)) {
BIF_ERROR(BIF_P, BADARG);
}
if (is_nil(BIF_ARG_2))
BIF_RET(NIL);
if (is_list(BIF_ARG_2)) {
res = process_info_list(BIF_P, BIF_ARG_1, BIF_ARG_2, 1, &fail_type);
if (is_non_value(res)) {
switch (fail_type) {
case ERTS_PI_FAIL_TYPE_BADARG:
BIF_ERROR(BIF_P, BADARG);
case ERTS_PI_FAIL_TYPE_YIELD:
ERTS_BIF_YIELD2(bif_export[BIF_process_info_2], BIF_P,
BIF_ARG_1, BIF_ARG_2);
case ERTS_PI_FAIL_TYPE_AWAIT_EXIT:
ERTS_BIF_AWAIT_X_DATA_TRAP(BIF_P, BIF_ARG_1, am_undefined);
default:
erl_exit(ERTS_ABORT_EXIT, "%s:%d: Internal error",
__FILE__, __LINE__);
}
}
ASSERT(!(BIF_P->flags & F_P2PNR_RESCHED));
BIF_RET(res);
}
if (pi_arg2ix(BIF_ARG_2) < 0)
BIF_ERROR(BIF_P, BADARG);
info_locks = pi_locks(BIF_ARG_2);
rp = pi_pid2proc(BIF_P, pid, info_locks|ERTS_PROC_LOCK_STATUS);
if (!rp)
res = am_undefined;
else if (rp == ERTS_PROC_LOCK_BUSY)
ERTS_BIF_YIELD2(bif_export[BIF_process_info_2], BIF_P,
BIF_ARG_1, BIF_ARG_2);
else if (rp != BIF_P && ERTS_PROC_PENDING_EXIT(rp)) {
erts_smp_proc_unlock(rp, info_locks|ERTS_PROC_LOCK_STATUS);
ERTS_BIF_AWAIT_X_DATA_TRAP(BIF_P, BIF_ARG_1, am_undefined);
}
else {
if (!(info_locks & ERTS_PROC_LOCK_STATUS))
erts_smp_proc_unlock(rp, ERTS_PROC_LOCK_STATUS);
res = process_info_aux(BIF_P, rp, pid, BIF_ARG_2, 0);
}
ASSERT(is_value(res));
#ifdef ERTS_SMP
if (BIF_P == rp)
info_locks &= ~ERTS_PROC_LOCK_MAIN;
if (rp && info_locks)
erts_smp_proc_unlock(rp, info_locks);
#endif
ASSERT(!(BIF_P->flags & F_P2PNR_RESCHED));
BIF_RET(res);
}
Eterm
process_info_aux(Process *BIF_P,
Process *rp,
Eterm rpid,
Eterm item,
int always_wrap)
{
Eterm *hp;
Eterm res = NIL;
ASSERT(rp);
/*
* Q: Why this always_wrap argument?
*
* A: registered_name is strange. If process has no registered name,
* process_info(Pid, registered_name) returns [], and
* the result of process_info(Pid) has no {registered_name, Name}
* tuple in the resulting list. This is inconsistent with all other
* options, but we do not dare to change it.
*
* When process_info/2 is called with a list as second argument,
* registered_name behaves as it should, i.e. a
* {registered_name, []} will appear in the resulting list.
*
* If always_wrap != 0, process_info_aux() always wrap the result
* in a key two tuple.
*/
switch (item) {
case am_registered_name:
if (rp->common.u.alive.reg) {
hp = HAlloc(BIF_P, 3);
res = rp->common.u.alive.reg->name;
} else {
if (always_wrap) {
hp = HAlloc(BIF_P, 3);
res = NIL;
}
else {
return NIL;
}
}
break;
case am_current_function:
res = current_function(BIF_P, rp, &hp, 0);
break;
case am_current_location:
res = current_function(BIF_P, rp, &hp, 1);
break;
case am_current_stacktrace:
res = current_stacktrace(BIF_P, rp, &hp);
break;
case am_initial_call:
hp = HAlloc(BIF_P, 3+4);
res = TUPLE3(hp,
rp->initial[INITIAL_MOD],
rp->initial[INITIAL_FUN],
make_small(rp->initial[INITIAL_ARI]));
hp += 4;
break;
case am_status:
res = erts_process_status(BIF_P, ERTS_PROC_LOCK_MAIN, rp, rpid);
ASSERT(res != am_undefined);
hp = HAlloc(BIF_P, 3);
break;
case am_messages: {
ErlMessage* mp;
int n;
ERTS_SMP_MSGQ_MV_INQ2PRIVQ(rp);
n = rp->msg.len;
if (n == 0 || ERTS_TRACE_FLAGS(rp) & F_SENSITIVE) {
hp = HAlloc(BIF_P, 3);
} else {
int remove_bad_messages = 0;
struct {
Uint copy_struct_size;
ErlMessage* msgp;
} *mq = erts_alloc(ERTS_ALC_T_TMP, n*sizeof(*mq));
Sint i = 0;
Uint heap_need = 3;
Eterm *hp_end;
for (mp = rp->msg.first; mp; mp = mp->next) {
heap_need += 2;
mq[i].msgp = mp;
if (rp != BIF_P) {
Eterm msg = ERL_MESSAGE_TERM(mq[i].msgp);
if (is_value(msg)) {
mq[i].copy_struct_size = (is_immed(msg)? 0 :
size_object(msg));
}
else if (mq[i].msgp->data.attached) {
mq[i].copy_struct_size
= erts_msg_attached_data_size(mq[i].msgp);
}
else {
/* Bad distribution message; ignore */
remove_bad_messages = 1;
mq[i].copy_struct_size = 0;
}
heap_need += mq[i].copy_struct_size;
}
else {
mq[i].copy_struct_size = 0;
if (mp->data.attached)
heap_need += erts_msg_attached_data_size(mp);
}
i++;
}
hp = HAlloc(BIF_P, heap_need);
hp_end = hp + heap_need;
ASSERT(i == n);
for (i--; i >= 0; i--) {
Eterm msg = ERL_MESSAGE_TERM(mq[i].msgp);
if (rp != BIF_P) {
if (is_value(msg)) {
if (mq[i].copy_struct_size)
msg = copy_struct(msg,
mq[i].copy_struct_size,
&hp,
&MSO(BIF_P));
}
else if (mq[i].msgp->data.attached) {
ErlHeapFragment *hfp;
/*
* Decode it into a message buffer and attach it
* to the message instead of the attached external
* term.
*
* Note that we may not pass a process pointer
* to erts_msg_distext2heap(), since it would then
* try to alter locks on that process.
*/
msg = erts_msg_distext2heap(
NULL, NULL, &hfp, &ERL_MESSAGE_TOKEN(mq[i].msgp),
mq[i].msgp->data.dist_ext);
ERL_MESSAGE_TERM(mq[i].msgp) = msg;
mq[i].msgp->data.heap_frag = hfp;
if (is_non_value(msg)) {
ASSERT(!mq[i].msgp->data.heap_frag);
/* Bad distribution message; ignore */
remove_bad_messages = 1;
continue;
}
else {
/* Make our copy of the message */
ASSERT(size_object(msg) == hfp->used_size);
msg = copy_struct(msg,
hfp->used_size,
&hp,
&MSO(BIF_P));
}
}
else {
/* Bad distribution message; ignore */
remove_bad_messages = 1;
continue;
}
}
else {
if (mq[i].msgp->data.attached) {
/* Decode it on the heap */
erts_move_msg_attached_data_to_heap(&hp,
&MSO(BIF_P),
mq[i].msgp);
msg = ERL_MESSAGE_TERM(mq[i].msgp);
ASSERT(!mq[i].msgp->data.attached);
if (is_non_value(msg)) {
/* Bad distribution message; ignore */
remove_bad_messages = 1;
continue;
}
}
}
res = CONS(hp, msg, res);
hp += 2;
}
HRelease(BIF_P, hp_end, hp+3);
erts_free(ERTS_ALC_T_TMP, mq);
if (remove_bad_messages) {
ErlMessage **mpp;
/*
* We need to remove bad distribution messages from
* the queue, so that the value returned for
* 'message_queue_len' is consistent with the value
* returned for 'messages'.
*/
mpp = &rp->msg.first;
mp = rp->msg.first;
while (mp) {
if (is_value(ERL_MESSAGE_TERM(mp))) {
mpp = &mp->next;
mp = mp->next;
}
else {
ErlMessage* bad_mp = mp;
ASSERT(!mp->data.attached);
if (rp->msg.save == &mp->next)
rp->msg.save = mpp;
if (rp->msg.last == &mp->next)
rp->msg.last = mpp;
*mpp = mp->next;
mp = mp->next;
rp->msg.len--;
free_message(bad_mp);
}
}
}
}
break;
}
case am_message_queue_len:
hp = HAlloc(BIF_P, 3);
ERTS_SMP_MSGQ_MV_INQ2PRIVQ(rp);
res = make_small(rp->msg.len);
break;
case am_links: {
MonitorInfoCollection mic;
int i;
Eterm item;
INIT_MONITOR_INFOS(mic);
erts_doforall_links(ERTS_P_LINKS(rp),&collect_one_link,&mic);
hp = HAlloc(BIF_P, 3 + mic.sz);
res = NIL;
for (i = 0; i < mic.mi_i; i++) {
item = STORE_NC(&hp, &MSO(BIF_P), mic.mi[i].entity);
res = CONS(hp, item, res);
hp += 2;
}
DESTROY_MONITOR_INFOS(mic);
break;
}
case am_monitors: {
MonitorInfoCollection mic;
int i;
INIT_MONITOR_INFOS(mic);
erts_doforall_monitors(ERTS_P_MONITORS(rp),&collect_one_origin_monitor,&mic);
hp = HAlloc(BIF_P, 3 + mic.sz);
res = NIL;
for (i = 0; i < mic.mi_i; i++) {
if (is_atom(mic.mi[i].entity)) {
/* Monitor by name.
* Build {process, {Name, Node}} and cons it.
*/
Eterm t1, t2;
t1 = TUPLE2(hp, mic.mi[i].entity, mic.mi[i].node);
hp += 3;
t2 = TUPLE2(hp, am_process, t1);
hp += 3;
res = CONS(hp, t2, res);
hp += 2;
}
else {
/* Monitor by pid. Build {process, Pid} and cons it. */
Eterm t;
Eterm pid = STORE_NC(&hp, &MSO(BIF_P), mic.mi[i].entity);
t = TUPLE2(hp, am_process, pid);
hp += 3;
res = CONS(hp, t, res);
hp += 2;
}
}
DESTROY_MONITOR_INFOS(mic);
break;
}
case am_monitored_by: {
MonitorInfoCollection mic;
int i;
Eterm item;
INIT_MONITOR_INFOS(mic);
erts_doforall_monitors(ERTS_P_MONITORS(rp),&collect_one_target_monitor,&mic);
hp = HAlloc(BIF_P, 3 + mic.sz);
res = NIL;
for (i = 0; i < mic.mi_i; ++i) {
item = STORE_NC(&hp, &MSO(BIF_P), mic.mi[i].entity);
res = CONS(hp, item, res);
hp += 2;
}
DESTROY_MONITOR_INFOS(mic);
break;
}
case am_suspending: {
ErtsSuspendMonitorInfoCollection smic;
int i;
Eterm item;
#ifdef DEBUG
Eterm *hp_end;
#endif
ERTS_INIT_SUSPEND_MONITOR_INFOS(smic,
BIF_P,
(BIF_P == rp
? ERTS_PROC_LOCK_MAIN
: 0) | ERTS_PROC_LOCK_LINK);
erts_doforall_suspend_monitors(rp->suspend_monitors,
&collect_one_suspend_monitor,
&smic);
hp = HAlloc(BIF_P, 3 + smic.sz);
#ifdef DEBUG
hp_end = hp + smic.sz;
#endif
res = NIL;
for (i = 0; i < smic.smi_i; i++) {
Sint a = (Sint) smic.smi[i]->active; /* quiet compiler warnings */
Sint p = (Sint) smic.smi[i]->pending; /* on 64-bit machines... */
Eterm active;
Eterm pending;
if (IS_SSMALL(a))
active = make_small(a);
else {
active = small_to_big(a, hp);
hp += BIG_UINT_HEAP_SIZE;
}
if (IS_SSMALL(p))
pending = make_small(p);
else {
pending = small_to_big(p, hp);
hp += BIG_UINT_HEAP_SIZE;
}
item = TUPLE3(hp, smic.smi[i]->pid, active, pending);
hp += 4;
res = CONS(hp, item, res);
hp += 2;
}
ERTS_DESTROY_SUSPEND_MONITOR_INFOS(smic);
ASSERT(hp == hp_end);
break;
}
case am_dictionary:
if (ERTS_TRACE_FLAGS(rp) & F_SENSITIVE) {
res = NIL;
} else {
res = erts_dictionary_copy(BIF_P, rp->dictionary);
}
hp = HAlloc(BIF_P, 3);
break;
case am_trap_exit: {
erts_aint32_t state = erts_smp_atomic32_read_nob(&rp->state);
hp = HAlloc(BIF_P, 3);
if (state & ERTS_PSFLG_TRAP_EXIT)
res = am_true;
else
res = am_false;
break;
}
case am_error_handler:
hp = HAlloc(BIF_P, 3);
res = erts_proc_get_error_handler(BIF_P);
break;
case am_heap_size: {
Uint hsz = 3;
(void) erts_bld_uint(NULL, &hsz, HEAP_SIZE(rp));
hp = HAlloc(BIF_P, hsz);
res = erts_bld_uint(&hp, NULL, HEAP_SIZE(rp));
break;
}
case am_fullsweep_after: {
Uint hsz = 3;
(void) erts_bld_uint(NULL, &hsz, MAX_GEN_GCS(rp));
hp = HAlloc(BIF_P, hsz);
res = erts_bld_uint(&hp, NULL, MAX_GEN_GCS(rp));
break;
}
case am_min_heap_size: {
Uint hsz = 3;
(void) erts_bld_uint(NULL, &hsz, MIN_HEAP_SIZE(rp));
hp = HAlloc(BIF_P, hsz);
res = erts_bld_uint(&hp, NULL, MIN_HEAP_SIZE(rp));
break;
}
case am_min_bin_vheap_size: {
Uint hsz = 3;
(void) erts_bld_uint(NULL, &hsz, MIN_VHEAP_SIZE(rp));
hp = HAlloc(BIF_P, hsz);
res = erts_bld_uint(&hp, NULL, MIN_VHEAP_SIZE(rp));
break;
}
case am_total_heap_size: {
ErlMessage *mp;
Uint total_heap_size;
Uint hsz = 3;
total_heap_size = rp->heap_sz;
if (rp->old_hend && rp->old_heap)
total_heap_size += rp->old_hend - rp->old_heap;
total_heap_size += rp->mbuf_sz;
ERTS_SMP_MSGQ_MV_INQ2PRIVQ(rp);
for (mp = rp->msg.first; mp; mp = mp->next)
if (mp->data.attached)
total_heap_size += erts_msg_attached_data_size(mp);
(void) erts_bld_uint(NULL, &hsz, total_heap_size);
hp = HAlloc(BIF_P, hsz);
res = erts_bld_uint(&hp, NULL, total_heap_size);
break;
}
case am_stack_size: {
Uint stack_size = STACK_START(rp) - rp->stop;
Uint hsz = 3;
(void) erts_bld_uint(NULL, &hsz, stack_size);
hp = HAlloc(BIF_P, hsz);
res = erts_bld_uint(&hp, NULL, stack_size);
break;
}
case am_memory: { /* Memory consumed in bytes */
Uint hsz = 3;
Uint size = erts_process_memory(rp);
(void) erts_bld_uint(NULL, &hsz, size);
hp = HAlloc(BIF_P, hsz);
res = erts_bld_uint(&hp, NULL, size);
break;
}
case am_garbage_collection: {
DECL_AM(minor_gcs);
Eterm t;
hp = HAlloc(BIF_P, 3+2 + 3+2 + 3+2 + 3+2 + 3); /* last "3" is for outside tuple */
t = TUPLE2(hp, AM_minor_gcs, make_small(GEN_GCS(rp))); hp += 3;
res = CONS(hp, t, NIL); hp += 2;
t = TUPLE2(hp, am_fullsweep_after, make_small(MAX_GEN_GCS(rp))); hp += 3;
res = CONS(hp, t, res); hp += 2;
t = TUPLE2(hp, am_min_heap_size, make_small(MIN_HEAP_SIZE(rp))); hp += 3;
res = CONS(hp, t, res); hp += 2;
t = TUPLE2(hp, am_min_bin_vheap_size, make_small(MIN_VHEAP_SIZE(rp))); hp += 3;
res = CONS(hp, t, res); hp += 2;
break;
}
case am_group_leader: {
int sz = NC_HEAP_SIZE(rp->group_leader);
hp = HAlloc(BIF_P, 3 + sz);
res = STORE_NC(&hp, &MSO(BIF_P), rp->group_leader);
break;
}
case am_reductions: {
Uint reds = rp->reds + erts_current_reductions(BIF_P, rp);
Uint hsz = 3;
(void) erts_bld_uint(NULL, &hsz, reds);
hp = HAlloc(BIF_P, hsz);
res = erts_bld_uint(&hp, NULL, reds);
break;
}
case am_priority:
hp = HAlloc(BIF_P, 3);
res = erts_get_process_priority(rp);
break;
case am_trace:
hp = HAlloc(BIF_P, 3);
res = make_small(ERTS_TRACE_FLAGS(rp) & TRACEE_FLAGS);
break;
case am_binary: {
Uint sz = 3;
(void) bld_bin_list(NULL, &sz, &MSO(rp));
hp = HAlloc(BIF_P, sz);
res = bld_bin_list(&hp, NULL, &MSO(rp));
break;
}
case am_sequential_trace_token:
res = copy_object(rp->seq_trace_token, BIF_P);
hp = HAlloc(BIF_P, 3);
break;
case am_catchlevel:
hp = HAlloc(BIF_P, 3);
res = make_small(catchlevel(BIF_P));
break;
case am_backtrace: {
erts_dsprintf_buf_t *dsbufp = erts_create_tmp_dsbuf(0);
erts_stack_dump(ERTS_PRINT_DSBUF, (void *) dsbufp, rp);
res = new_binary(BIF_P, (byte *) dsbufp->str, dsbufp->str_len);
erts_destroy_tmp_dsbuf(dsbufp);
hp = HAlloc(BIF_P, 3);
break;
}
case am_last_calls: {
struct saved_calls *scb = ERTS_PROC_GET_SAVED_CALLS_BUF(BIF_P);
if (!scb) {
hp = HAlloc(BIF_P, 3);
res = am_false;
} else {
/*
* One cons cell and a 3-struct, and a 2-tuple.
* Might be less than that, if there are sends, receives or timeouts,
* so we must do a HRelease() to avoid creating holes.
*/
Uint needed = scb->n*(2+4) + 3;
Eterm* limit;
Eterm term, list;
int i, j;
hp = HAlloc(BIF_P, needed);
limit = hp + needed;
list = NIL;
for (i = 0; i < scb->n; i++) {
j = scb->cur - i - 1;
if (j < 0)
j += scb->len;
if (scb->ct[j] == &exp_send)
term = am_send;
else if (scb->ct[j] == &exp_receive)
term = am_receive;
else if (scb->ct[j] == &exp_timeout)
term = am_timeout;
else {
term = TUPLE3(hp,
scb->ct[j]->code[0],
scb->ct[j]->code[1],
make_small(scb->ct[j]->code[2]));
hp += 4;
}
list = CONS(hp, term, list);
hp += 2;
}
res = list;
res = TUPLE2(hp, item, res);
hp += 3;
HRelease(BIF_P,limit,hp);
return res;
}
break;
}
default:
return THE_NON_VALUE; /* will produce badarg */
}
return TUPLE2(hp, item, res);
}
#undef MI_INC
static Eterm
current_function(Process* BIF_P, Process* rp, Eterm** hpp, int full_info)
{
Eterm* hp;
Eterm res;
FunctionInfo fi;
if (rp->current == NULL) {
erts_lookup_function_info(&fi, rp->i, full_info);
rp->current = fi.current;
} else if (full_info) {
erts_lookup_function_info(&fi, rp->i, full_info);
if (fi.current == NULL) {
/* Use the current function without location info */
erts_set_current_function(&fi, rp->current);
}
}
if (BIF_P == rp) {
FunctionInfo fi2;
/*
* The current function is erlang:process_info/{1,2},
* which is not the answer that the application want.
* We will use the function pointed into by rp->cp
* instead if it can be looked up.
*/
erts_lookup_function_info(&fi2, rp->cp, full_info);
if (fi2.current) {
fi = fi2;
rp->current = fi2.current;
}
}
/*
* Return the result.
*/
if (rp->current == NULL) {
hp = HAlloc(BIF_P, 3);
res = am_undefined;
} else if (full_info) {
hp = HAlloc(BIF_P, 3+fi.needed);
hp = erts_build_mfa_item(&fi, hp, am_true, &res);
} else {
hp = HAlloc(BIF_P, 3+4);
res = TUPLE3(hp, rp->current[0],
rp->current[1], make_small(rp->current[2]));
hp += 4;
}
*hpp = hp;
return res;
}
static Eterm
current_stacktrace(Process* p, Process* rp, Eterm** hpp)
{
Uint sz;
struct StackTrace* s;
int depth;
FunctionInfo* stk;
FunctionInfo* stkp;
Uint heap_size;
int i;
Eterm* hp = *hpp;
Eterm mfa;
Eterm res = NIL;
depth = 8;
sz = offsetof(struct StackTrace, trace) + sizeof(BeamInstr *)*depth;
s = (struct StackTrace *) erts_alloc(ERTS_ALC_T_TMP, sz);
s->depth = 0;
if (rp->i) {
s->trace[s->depth++] = rp->i;
depth--;
}
if (depth > 0 && rp->cp != 0) {
s->trace[s->depth++] = rp->cp - 1;
depth--;
}
erts_save_stacktrace(rp, s, depth);
depth = s->depth;
stk = stkp = (FunctionInfo *) erts_alloc(ERTS_ALC_T_TMP,
depth*sizeof(FunctionInfo));
heap_size = 3;
for (i = 0; i < depth; i++) {
erts_lookup_function_info(stkp, s->trace[i], 1);
if (stkp->current) {
heap_size += stkp->needed + 2;
stkp++;
}
}
hp = HAlloc(p, heap_size);
while (stkp > stk) {
stkp--;
hp = erts_build_mfa_item(stkp, hp, am_true, &mfa);
res = CONS(hp, mfa, res);
hp += 2;
}
erts_free(ERTS_ALC_T_TMP, stk);
erts_free(ERTS_ALC_T_TMP, s);
*hpp = hp;
return res;
}
#if defined(VALGRIND)
static int check_if_xml(void)
{
char buf[1];
size_t bufsz = sizeof(buf);
return erts_sys_getenv_raw("VALGRIND_LOG_XML", buf, &bufsz) >= 0;
}
#else
#define check_if_xml() 0
#endif
/*
* This function takes care of calls to erlang:system_info/1 when the argument
* is a tuple.
*/
static BIF_RETTYPE
info_1_tuple(Process* BIF_P, /* Pointer to current process. */
Eterm* tp, /* Pointer to first element in tuple */
int arity) /* Arity of tuple (untagged). */
{
Eterm ret;
Eterm sel;
sel = *tp++;
if (sel == am_memory_internal) {
switch (arity) {
case 3:
if (erts_request_alloc_info(BIF_P, tp[0], tp[1], 1, 1))
return am_true;
default:
goto badarg;
}
}
else if (sel == am_allocator_sizes) {
switch (arity) {
case 2:
ERTS_BIF_PREP_TRAP1(ret, alloc_sizes_trap, BIF_P, *tp);
return ret;
case 3:
if (erts_request_alloc_info(BIF_P, tp[0], tp[1], 1, 0))
return am_true;
default:
goto badarg;
}
}
else if (sel == am_wordsize && arity == 2) {
if (tp[0] == am_internal) {
return make_small(sizeof(Eterm));
}
if (tp[0] == am_external) {
return make_small(sizeof(UWord));
}
goto badarg;
} else if (sel == am_allocated) {
if (arity == 2) {
Eterm res = THE_NON_VALUE;
char *buf;
int len = is_string(*tp);
if (len <= 0)
return res;
buf = (char *) erts_alloc(ERTS_ALC_T_TMP, len+1);
if (intlist_to_buf(*tp, buf, len) != len)
erl_exit(1, "%s:%d: Internal error\n", __FILE__, __LINE__);
buf[len] = '\0';
res = erts_instr_dump_memory_map(buf) ? am_true : am_false;
erts_free(ERTS_ALC_T_TMP, (void *) buf);
if (is_non_value(res))
goto badarg;
return res;
}
else if (arity == 3 && tp[0] == am_status) {
if (is_atom(tp[1]))
return erts_instr_get_stat(BIF_P, tp[1], 1);
else {
Eterm res = THE_NON_VALUE;
char *buf;
int len = is_string(tp[1]);
if (len <= 0)
return res;
buf = (char *) erts_alloc(ERTS_ALC_T_TMP, len+1);
if (intlist_to_buf(tp[1], buf, len) != len)
erl_exit(1, "%s:%d: Internal error\n", __FILE__, __LINE__);
buf[len] = '\0';
res = erts_instr_dump_stat(buf, 1) ? am_true : am_false;
erts_free(ERTS_ALC_T_TMP, (void *) buf);
if (is_non_value(res))
goto badarg;
return res;
}
}
else
goto badarg;
} else if (sel == am_allocator) {
switch (arity) {
case 2:
ERTS_BIF_PREP_TRAP1(ret, alloc_info_trap, BIF_P, *tp);
return ret;
case 3:
if (erts_request_alloc_info(BIF_P, tp[0], tp[1], 0, 0))
return am_true;
default:
goto badarg;
}
} else if (ERTS_IS_ATOM_STR("internal_cpu_topology", sel) && arity == 2) {
return erts_get_cpu_topology_term(BIF_P, *tp);
} else if (ERTS_IS_ATOM_STR("cpu_topology", sel) && arity == 2) {
Eterm res = erts_get_cpu_topology_term(BIF_P, *tp);
if (res == THE_NON_VALUE)
goto badarg;
ERTS_BIF_PREP_TRAP1(ret, erts_format_cpu_topology_trap, BIF_P, res);
return ret;
#if defined(PURIFY) || defined(VALGRIND)
} else if (ERTS_IS_ATOM_STR("error_checker", sel)
#if defined(PURIFY)
|| sel == am_purify
#elif defined(VALGRIND)
|| ERTS_IS_ATOM_STR("valgrind", sel)
#endif
) {
if (*tp == am_memory) {
#if defined(PURIFY)
BIF_RET(erts_make_integer(purify_new_leaks(), BIF_P));
#elif defined(VALGRIND)
# ifdef VALGRIND_DO_ADDED_LEAK_CHECK
VALGRIND_DO_ADDED_LEAK_CHECK;
# else
VALGRIND_DO_LEAK_CHECK;
# endif
BIF_RET(make_small(0));
#endif
} else if (*tp == am_fd) {
#if defined(PURIFY)
BIF_RET(erts_make_integer(purify_new_fds_inuse(), BIF_P));
#elif defined(VALGRIND)
/* Not present in valgrind... */
BIF_RET(make_small(0));
#endif
} else if (*tp == am_running) {
#if defined(PURIFY)
BIF_RET(purify_is_running() ? am_true : am_false);
#elif defined(VALGRIND)
BIF_RET(RUNNING_ON_VALGRIND ? am_true : am_false);
#endif
} else if (is_list(*tp)) {
#if defined(PURIFY)
#define ERTS_ERROR_CHECKER_PRINTF purify_printf
#define ERTS_ERROR_CHECKER_PRINTF_XML purify_printf
#elif defined(VALGRIND)
#define ERTS_ERROR_CHECKER_PRINTF VALGRIND_PRINTF
# ifndef HAVE_VALGRIND_PRINTF_XML
# define ERTS_ERROR_CHECKER_PRINTF_XML VALGRIND_PRINTF
# else
# define ERTS_ERROR_CHECKER_PRINTF_XML VALGRIND_PRINTF_XML
# endif
#endif
ErlDrvSizeT buf_size = 8*1024; /* Try with 8KB first */
char *buf = erts_alloc(ERTS_ALC_T_TMP, buf_size);
ErlDrvSizeT r = erts_iolist_to_buf(*tp, (char*) buf, buf_size - 1);
if (ERTS_IOLIST_TO_BUF_FAILED(r)) {
erts_free(ERTS_ALC_T_TMP, (void *) buf);
if (erts_iolist_size(*tp, &buf_size)) {
goto badarg;
}
buf_size++;
buf = erts_alloc(ERTS_ALC_T_TMP, buf_size);
r = erts_iolist_to_buf(*tp, (char*) buf, buf_size - 1);
ASSERT(r == buf_size - 1);
}
buf[buf_size - 1 - r] = '\0';
if (check_if_xml()) {
ERTS_ERROR_CHECKER_PRINTF_XML("<erlang_info_log>"
"%s</erlang_info_log>\n", buf);
} else {
ERTS_ERROR_CHECKER_PRINTF("%s\n", buf);
}
erts_free(ERTS_ALC_T_TMP, (void *) buf);
BIF_RET(am_true);
#undef ERTS_ERROR_CHECKER_PRINTF
}
#endif
#ifdef QUANTIFY
} else if (sel == am_quantify) {
if (*tp == am_clear) {
quantify_clear_data();
BIF_RET(am_true);
} else if (*tp == am_start) {
quantify_start_recording_data();
BIF_RET(am_true);
} else if (*tp == am_stop) {
quantify_stop_recording_data();
BIF_RET(am_true);
} else if (*tp == am_running) {
BIF_RET(quantify_is_running() ? am_true : am_false);
}
#endif
#if defined(__GNUC__) && defined(HAVE_SOLARIS_SPARC_PERFMON)
} else if (ERTS_IS_ATOM_STR("ultrasparc_set_pcr", sel)) {
unsigned long long tmp;
int fd;
int rc;
if (arity != 2 || !is_small(*tp)) {
goto badarg;
}
tmp = signed_val(*tp);
if ((fd = open("/dev/perfmon", O_RDONLY)) == -1) {
BIF_RET(am_false);
}
rc = ioctl(fd, PERFMON_SETPCR, &tmp);
close(fd);
if (rc < 0) {
BIF_RET(am_false);
}
BIF_RET(am_true);
#endif
}
badarg:
ERTS_BIF_PREP_ERROR(ret, BIF_P, BADARG);
return ret;
}
#define INFO_DSBUF_INC_SZ 256
static erts_dsprintf_buf_t *
grow_info_dsbuf(erts_dsprintf_buf_t *dsbufp, size_t need)
{
size_t size;
size_t free_size = dsbufp->size - dsbufp->str_len;
ASSERT(dsbufp);
if (need <= free_size)
return dsbufp;
size = need - free_size + INFO_DSBUF_INC_SZ;
size = ((size + INFO_DSBUF_INC_SZ - 1)/INFO_DSBUF_INC_SZ)*INFO_DSBUF_INC_SZ;
size += dsbufp->size;
ASSERT(dsbufp->str_len + need <= size);
dsbufp->str = (char *) erts_realloc(ERTS_ALC_T_INFO_DSBUF,
(void *) dsbufp->str,
size);
dsbufp->size = size;
return dsbufp;
}
static erts_dsprintf_buf_t *
erts_create_info_dsbuf(Uint size)
{
Uint init_size = size ? size : INFO_DSBUF_INC_SZ;
erts_dsprintf_buf_t init = ERTS_DSPRINTF_BUF_INITER(grow_info_dsbuf);
erts_dsprintf_buf_t *dsbufp = erts_alloc(ERTS_ALC_T_INFO_DSBUF,
sizeof(erts_dsprintf_buf_t));
sys_memcpy((void *) dsbufp, (void *) &init, sizeof(erts_dsprintf_buf_t));
dsbufp->str = (char *) erts_alloc(ERTS_ALC_T_INFO_DSBUF, init_size);
dsbufp->str[0] = '\0';
dsbufp->size = init_size;
return dsbufp;
}
static void
erts_destroy_info_dsbuf(erts_dsprintf_buf_t *dsbufp)
{
if (dsbufp->str)
erts_free(ERTS_ALC_T_INFO_DSBUF, (void *) dsbufp->str);
erts_free(ERTS_ALC_T_INFO_DSBUF, (void *) dsbufp);
}
static Eterm
c_compiler_used(Eterm **hpp, Uint *szp)
{
#if defined(__GNUC__)
# if defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__)
# define ERTS_GNUC_VSN_NUMS 3
# elif defined(__GNUC_MINOR__)
# define ERTS_GNUC_VSN_NUMS 2
# else
# define ERTS_GNUC_VSN_NUMS 1
# endif
return erts_bld_tuple(hpp,
szp,
2,
erts_bld_atom(hpp, szp, "gnuc"),
#if ERTS_GNUC_VSN_NUMS > 1
erts_bld_tuple(hpp,
szp,
ERTS_GNUC_VSN_NUMS,
#endif
erts_bld_uint(hpp, szp,
(Uint) __GNUC__)
#ifdef __GNUC_MINOR__
,
erts_bld_uint(hpp, szp,
(Uint) __GNUC_MINOR__)
#ifdef __GNUC_PATCHLEVEL__
,
erts_bld_uint(hpp, szp,
(Uint) __GNUC_PATCHLEVEL__)
#endif
#endif
#if ERTS_GNUC_VSN_NUMS > 1
)
#endif
);
#elif defined(_MSC_VER)
return erts_bld_tuple(hpp,
szp,
2,
erts_bld_atom(hpp, szp, "msc"),
erts_bld_uint(hpp, szp, (Uint) _MSC_VER));
#else
return erts_bld_tuple(hpp,
szp,
2,
am_undefined,
am_undefined);
#endif
}
static int is_snif_term(Eterm module_atom) {
int i;
Atom *a = atom_tab(atom_val(module_atom));
char *aname = (char *) a->name;
/* if a->name has a '.' then the bif (snif) is bogus i.e a package */
for (i = 0; i < a->len; i++) {
if (aname[i] == '.')
return 0;
}
return 1;
}
static Eterm build_snif_term(Eterm **hpp, Uint *szp, int ix, Eterm res) {
Eterm tup;
tup = erts_bld_tuple(hpp, szp, 3, bif_table[ix].module, bif_table[ix].name, make_small(bif_table[ix].arity));
res = erts_bld_cons( hpp, szp, tup, res);
return res;
}
static Eterm build_snifs_term(Eterm **hpp, Uint *szp, Eterm res) {
int i;
for (i = 0; i < BIF_SIZE; i++) {
if (is_snif_term(bif_table[i].module)) {
res = build_snif_term(hpp, szp, i, res);
}
}
return res;
}
BIF_RETTYPE system_info_1(BIF_ALIST_1)
{
Eterm res;
Eterm* hp;
Eterm val;
int i;
if (is_tuple(BIF_ARG_1)) {
Eterm* tp = tuple_val(BIF_ARG_1);
Uint arity = *tp++;
return info_1_tuple(BIF_P, tp, arityval(arity));
} else if (BIF_ARG_1 == am_scheduler_id) {
#ifdef ERTS_SMP
ASSERT(BIF_P->scheduler_data);
BIF_RET(make_small(BIF_P->scheduler_data->no));
#else
BIF_RET(make_small(1));
#endif
} else if (BIF_ARG_1 == am_compat_rel) {
ASSERT(erts_compat_rel > 0);
BIF_RET(make_small(erts_compat_rel));
} else if (BIF_ARG_1 == am_multi_scheduling) {
#ifndef ERTS_SMP
BIF_RET(am_disabled);
#else
if (erts_no_schedulers == 1)
BIF_RET(am_disabled);
else {
BIF_RET(erts_is_multi_scheduling_blocked()
? am_blocked
: am_enabled);
}
#endif
} else if (BIF_ARG_1 == am_build_type) {
#if defined(DEBUG)
ERTS_DECL_AM(debug);
BIF_RET(AM_debug);
#elif defined(PURIFY)
ERTS_DECL_AM(purify);
BIF_RET(AM_purify);
#elif defined(QUANTIFY)
ERTS_DECL_AM(quantify);
BIF_RET(AM_quantify);
#elif defined(PURECOV)
ERTS_DECL_AM(purecov);
BIF_RET(AM_purecov);
#elif defined(ERTS_GCOV)
ERTS_DECL_AM(gcov);
BIF_RET(AM_gcov);
#elif defined(VALGRIND)
ERTS_DECL_AM(valgrind);
BIF_RET(AM_valgrind);
#elif defined(GPROF)
ERTS_DECL_AM(gprof);
BIF_RET(AM_gprof);
#elif defined(ERTS_ENABLE_LOCK_COUNT)
ERTS_DECL_AM(lcnt);
BIF_RET(AM_lcnt);
#elif defined(ERTS_FRMPTR)
ERTS_DECL_AM(frmptr);
BIF_RET(AM_frmptr);
#else
BIF_RET(am_opt);
#endif
BIF_RET(res);
} else if (BIF_ARG_1 == am_allocated_areas) {
res = erts_allocated_areas(NULL, NULL, BIF_P);
BIF_RET(res);
} else if (BIF_ARG_1 == am_allocated) {
BIF_RET(erts_instr_get_memory_map(BIF_P));
} else if (BIF_ARG_1 == am_hipe_architecture) {
#if defined(HIPE)
BIF_RET(hipe_arch_name);
#else
BIF_RET(am_undefined);
#endif
} else if (BIF_ARG_1 == am_trace_control_word) {
BIF_RET(db_get_trace_control_word(BIF_P));
} else if (ERTS_IS_ATOM_STR("ets_realloc_moves", BIF_ARG_1)) {
BIF_RET((erts_ets_realloc_always_moves) ? am_true : am_false);
} else if (ERTS_IS_ATOM_STR("ets_always_compress", BIF_ARG_1)) {
BIF_RET((erts_ets_always_compress) ? am_true : am_false);
} else if (ERTS_IS_ATOM_STR("snifs", BIF_ARG_1)) {
Uint size = 0;
Uint *szp;
szp = &size;
build_snifs_term(NULL, szp, NIL);
hp = HAlloc(BIF_P, size);
res = build_snifs_term(&hp, NULL, NIL);
BIF_RET(res);
} else if (BIF_ARG_1 == am_sequential_tracer) {
val = erts_get_system_seq_tracer();
ASSERT(is_internal_pid(val) || is_internal_port(val) || val==am_false);
hp = HAlloc(BIF_P, 3);
res = TUPLE2(hp, am_sequential_tracer, val);
BIF_RET(res);
} else if (BIF_ARG_1 == am_garbage_collection){
Uint val = (Uint) erts_smp_atomic32_read_nob(&erts_max_gen_gcs);
Eterm tup;
hp = HAlloc(BIF_P, 3+2 + 3+2 + 3+2);
tup = TUPLE2(hp, am_fullsweep_after, make_small(val)); hp += 3;
res = CONS(hp, tup, NIL); hp += 2;
tup = TUPLE2(hp, am_min_heap_size, make_small(H_MIN_SIZE)); hp += 3;
res = CONS(hp, tup, res); hp += 2;
tup = TUPLE2(hp, am_min_bin_vheap_size, make_small(BIN_VH_MIN_SIZE)); hp += 3;
res = CONS(hp, tup, res); hp += 2;
BIF_RET(res);
} else if (BIF_ARG_1 == am_fullsweep_after){
Uint val = (Uint) erts_smp_atomic32_read_nob(&erts_max_gen_gcs);
hp = HAlloc(BIF_P, 3);
res = TUPLE2(hp, am_fullsweep_after, make_small(val));
BIF_RET(res);
} else if (BIF_ARG_1 == am_min_heap_size) {
hp = HAlloc(BIF_P, 3);
res = TUPLE2(hp, am_min_heap_size,make_small(H_MIN_SIZE));
BIF_RET(res);
} else if (BIF_ARG_1 == am_min_bin_vheap_size) {
hp = HAlloc(BIF_P, 3);
res = TUPLE2(hp, am_min_bin_vheap_size,make_small(BIN_VH_MIN_SIZE));
BIF_RET(res);
} else if (BIF_ARG_1 == am_process_count) {
BIF_RET(make_small(erts_ptab_count(&erts_proc)));
} else if (BIF_ARG_1 == am_process_limit) {
BIF_RET(make_small(erts_ptab_max(&erts_proc)));
} else if (BIF_ARG_1 == am_port_count) {
BIF_RET(make_small(erts_ptab_count(&erts_port)));
} else if (BIF_ARG_1 == am_port_limit) {
BIF_RET(make_small(erts_ptab_max(&erts_port)));
} else if (BIF_ARG_1 == am_info
|| BIF_ARG_1 == am_procs
|| BIF_ARG_1 == am_loaded
|| BIF_ARG_1 == am_dist) {
erts_dsprintf_buf_t *dsbufp = erts_create_info_dsbuf(0);
/* Need to be the only thread running... */
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_thr_progress_block();
if (BIF_ARG_1 == am_info)
info(ERTS_PRINT_DSBUF, (void *) dsbufp);
else if (BIF_ARG_1 == am_procs)
process_info(ERTS_PRINT_DSBUF, (void *) dsbufp);
else if (BIF_ARG_1 == am_loaded)
loaded(ERTS_PRINT_DSBUF, (void *) dsbufp);
else
distribution_info(ERTS_PRINT_DSBUF, (void *) dsbufp);
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
ASSERT(dsbufp && dsbufp->str);
res = new_binary(BIF_P, (byte *) dsbufp->str, dsbufp->str_len);
erts_destroy_info_dsbuf(dsbufp);
BIF_RET(res);
} else if (ERTS_IS_ATOM_STR("dist_ctrl", BIF_ARG_1)) {
DistEntry *dep;
i = 0;
/* Need to be the only thread running... */
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_thr_progress_block();
for (dep = erts_visible_dist_entries; dep; dep = dep->next)
++i;
for (dep = erts_hidden_dist_entries; dep; dep = dep->next)
++i;
hp = HAlloc(BIF_P,i*(3+2));
res = NIL;
for (dep = erts_hidden_dist_entries; dep; dep = dep->next) {
Eterm tpl;
ASSERT(is_immed(dep->cid));
tpl = TUPLE2(hp, dep->sysname, dep->cid);
hp +=3;
res = CONS(hp, tpl, res);
hp += 2;
}
for (dep = erts_visible_dist_entries; dep; dep = dep->next) {
Eterm tpl;
ASSERT(is_immed(dep->cid));
tpl = TUPLE2(hp, dep->sysname, dep->cid);
hp +=3;
res = CONS(hp, tpl, res);
hp += 2;
}
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
BIF_RET(res);
} else if (BIF_ARG_1 == am_system_version) {
erts_dsprintf_buf_t *dsbufp = erts_create_tmp_dsbuf(0);
erts_print_system_version(ERTS_PRINT_DSBUF, (void *) dsbufp, BIF_P);
hp = HAlloc(BIF_P, dsbufp->str_len*2);
res = buf_to_intlist(&hp, dsbufp->str, dsbufp->str_len, NIL);
erts_destroy_tmp_dsbuf(dsbufp);
BIF_RET(res);
} else if (BIF_ARG_1 == am_system_architecture) {
hp = HAlloc(BIF_P, 2*(sizeof(ERLANG_ARCHITECTURE)-1));
BIF_RET(buf_to_intlist(&hp,
ERLANG_ARCHITECTURE,
sizeof(ERLANG_ARCHITECTURE)-1,
NIL));
}
else if (BIF_ARG_1 == am_memory_types) {
return erts_instr_get_type_info(BIF_P);
}
else if (BIF_ARG_1 == am_os_type) {
BIF_RET(os_type_tuple);
}
else if (BIF_ARG_1 == am_allocator) {
BIF_RET(erts_allocator_options((void *) BIF_P));
}
else if (BIF_ARG_1 == am_thread_pool_size) {
#ifdef USE_THREADS
extern int erts_async_max_threads;
#endif
int n;
#ifdef USE_THREADS
n = erts_async_max_threads;
#else
n = 0;
#endif
BIF_RET(make_small(n));
}
else if (BIF_ARG_1 == am_alloc_util_allocators) {
BIF_RET(erts_alloc_util_allocators((void *) BIF_P));
}
else if (BIF_ARG_1 == am_elib_malloc) {
/* To be removed in R15 */
BIF_RET(am_false);
}
else if (BIF_ARG_1 == am_os_version) {
BIF_RET(os_version_tuple);
}
else if (BIF_ARG_1 == am_version) {
int n = strlen(ERLANG_VERSION);
hp = HAlloc(BIF_P, ((sizeof ERLANG_VERSION)-1) * 2);
BIF_RET(buf_to_intlist(&hp, ERLANG_VERSION, n, NIL));
}
else if (BIF_ARG_1 == am_machine) {
int n = strlen(EMULATOR);
hp = HAlloc(BIF_P, n*2);
BIF_RET(buf_to_intlist(&hp, EMULATOR, n, NIL));
}
else if (BIF_ARG_1 == am_garbage_collection) {
BIF_RET(am_generational);
#ifdef ERTS_OPCODE_COUNTER_SUPPORT
} else if (BIF_ARG_1 == am_instruction_counts) {
#ifdef DEBUG
Eterm *endp;
#endif
Eterm *hp, **hpp;
Uint hsz, *hszp;
int i;
hpp = NULL;
hsz = 0;
hszp = &hsz;
bld_instruction_counts:
res = NIL;
for (i = num_instructions-1; i >= 0; i--) {
res = erts_bld_cons(hpp, hszp,
erts_bld_tuple(hpp, hszp, 2,
erts_atom_put(opc[i].name,
strlen(opc[i].name),
ERTS_ATOM_ENC_LATIN1,
1),
erts_bld_uint(hpp, hszp,
opc[i].count)),
res);
}
if (!hpp) {
hp = HAlloc(BIF_P, hsz);
hpp = &hp;
#ifdef DEBUG
endp = hp + hsz;
#endif
hszp = NULL;
goto bld_instruction_counts;
}
#ifdef DEBUG
ASSERT(endp == hp);
#endif
BIF_RET(res);
#endif /* #ifndef ERTS_SMP */
} else if (BIF_ARG_1 == am_wordsize) {
return make_small(sizeof(Eterm));
} else if (BIF_ARG_1 == am_endian) {
#if defined(WORDS_BIGENDIAN)
return am_big;
#else
return am_little;
#endif
} else if (BIF_ARG_1 == am_heap_sizes) {
return erts_heap_sizes(BIF_P);
} else if (BIF_ARG_1 == am_heap_type) {
return am_private;
} else if (ERTS_IS_ATOM_STR("cpu_topology", BIF_ARG_1)) {
res = erts_get_cpu_topology_term(BIF_P, am_used);
BIF_TRAP1(erts_format_cpu_topology_trap, BIF_P, res);
} else if (ERTS_IS_ATOM_STR("update_cpu_info", BIF_ARG_1)) {
if (erts_update_cpu_info()) {
ERTS_DECL_AM(changed);
BIF_RET(AM_changed);
}
else {
ERTS_DECL_AM(unchanged);
BIF_RET(AM_unchanged);
}
#if defined(__GNUC__) && defined(HAVE_SOLARIS_SPARC_PERFMON)
} else if (ERTS_IS_ATOM_STR("ultrasparc_read_tick1", BIF_ARG_1)) {
register unsigned high asm("%l0");
register unsigned low asm("%l1");
hp = HAlloc(BIF_P, 5);
asm volatile (".word 0xa3410000;" /* rd %tick, %l1 */
".word 0xa1347020" /* srlx %l1, 0x20, %l0 */
: "=r" (high), "=r" (low));
res = TUPLE4(hp, make_small(high >> 16),
make_small(high & 0xFFFF),
make_small(low >> 16),
make_small(low & 0xFFFF));
BIF_RET(res);
} else if (ERTS_IS_ATOM_STR("ultrasparc_read_tick2", BIF_ARG_1)) {
register unsigned high asm("%l0");
register unsigned low asm("%l1");
asm volatile (".word 0xa3410000;" /* rd %tick, %l1 */
".word 0xa1347020" /* srlx %l1, 0x20, %l0 */
: "=r" (high), "=r" (low));
hp = HAlloc(BIF_P, 5);
res = TUPLE4(hp, make_small(high >> 16),
make_small(high & 0xFFFF),
make_small(low >> 16),
make_small(low & 0xFFFF));
BIF_RET(res);
} else if (ERTS_IS_ATOM_STR("ultrasparc_read_pic1", BIF_ARG_1)) {
register unsigned high asm("%l0");
register unsigned low asm("%l1");
hp = HAlloc(BIF_P, 5);
asm volatile (".word 0xa3444000;" /* rd %asr17, %l1 */
".word 0xa1347020" /* srlx %l1, 0x20, %l0 */
: "=r" (high), "=r" (low));
res = TUPLE4(hp, make_small(high >> 16),
make_small(high & 0xFFFF),
make_small(low >> 16),
make_small(low & 0xFFFF));
BIF_RET(res);
} else if (ERTS_IS_ATOM_STR("ultrasparc_read_pic2", BIF_ARG_1)) {
register unsigned high asm("%l0");
register unsigned low asm("%l1");
asm volatile (".word 0xa3444000;" /* rd %asr17, %l1 */
".word 0xa1347020" /* srlx %l1, 0x20, %l0 */
: "=r" (high), "=r" (low));
hp = HAlloc(BIF_P, 5);
res = TUPLE4(hp, make_small(high >> 16),
make_small(high & 0xFFFF),
make_small(low >> 16),
make_small(low & 0xFFFF));
BIF_RET(res);
#endif
} else if (BIF_ARG_1 == am_threads) {
#ifdef USE_THREADS
return am_true;
#else
return am_false;
#endif
} else if (BIF_ARG_1 == am_creation) {
return make_small(erts_this_node->creation);
} else if (BIF_ARG_1 == am_break_ignored) {
extern int ignore_break;
if (ignore_break)
return am_true;
else
return am_false;
}
/* Arguments that are unusual follow ... */
else if (ERTS_IS_ATOM_STR("logical_processors", BIF_ARG_1)) {
int no;
erts_get_logical_processors(&no, NULL, NULL);
if (no > 0)
BIF_RET(make_small((Uint) no));
else {
DECL_AM(unknown);
BIF_RET(AM_unknown);
}
}
else if (ERTS_IS_ATOM_STR("logical_processors_online", BIF_ARG_1)) {
int no;
erts_get_logical_processors(NULL, &no, NULL);
if (no > 0)
BIF_RET(make_small((Uint) no));
else {
DECL_AM(unknown);
BIF_RET(AM_unknown);
}
}
else if (ERTS_IS_ATOM_STR("logical_processors_available", BIF_ARG_1)) {
int no;
erts_get_logical_processors(NULL, NULL, &no);
if (no > 0)
BIF_RET(make_small((Uint) no));
else {
DECL_AM(unknown);
BIF_RET(AM_unknown);
}
} else if (ERTS_IS_ATOM_STR("otp_correction_package", BIF_ARG_1)) {
int n = sizeof(ERLANG_OTP_CORRECTION_PACKAGE)-1;
hp = HAlloc(BIF_P, 2*n);
BIF_RET(buf_to_intlist(&hp, ERLANG_OTP_CORRECTION_PACKAGE, n, NIL));
} else if (ERTS_IS_ATOM_STR("otp_release", BIF_ARG_1)) {
int n = sizeof(ERLANG_OTP_RELEASE)-1;
hp = HAlloc(BIF_P, 2*n);
BIF_RET(buf_to_intlist(&hp, ERLANG_OTP_RELEASE, n, NIL));
} else if (ERTS_IS_ATOM_STR("driver_version", BIF_ARG_1)) {
char buf[42];
int n = erts_snprintf(buf, 42, "%d.%d",
ERL_DRV_EXTENDED_MAJOR_VERSION,
ERL_DRV_EXTENDED_MINOR_VERSION);
hp = HAlloc(BIF_P, 2*n);
BIF_RET(buf_to_intlist(&hp, buf, n, NIL));
} else if (ERTS_IS_ATOM_STR("smp_support", BIF_ARG_1)) {
#ifdef ERTS_SMP
BIF_RET(am_true);
#else
BIF_RET(am_false);
#endif
} else if (ERTS_IS_ATOM_STR("scheduler_bind_type", BIF_ARG_1)) {
BIF_RET(erts_bound_schedulers_term(BIF_P));
} else if (ERTS_IS_ATOM_STR("scheduler_bindings", BIF_ARG_1)) {
BIF_RET(erts_get_schedulers_binds(BIF_P));
} else if (ERTS_IS_ATOM_STR("constant_pool_support", BIF_ARG_1)) {
BIF_RET(am_true);
} else if (ERTS_IS_ATOM_STR("schedulers", BIF_ARG_1)
|| ERTS_IS_ATOM_STR("schedulers_total", BIF_ARG_1)) {
res = make_small(erts_no_schedulers);
BIF_RET(res);
} else if (ERTS_IS_ATOM_STR("schedulers_state", BIF_ARG_1)) {
#ifndef ERTS_SMP
Eterm *hp = HAlloc(BIF_P, 4);
res = TUPLE3(hp, make_small(1), make_small(1), make_small(1));
BIF_RET(res);
#else
Uint total, online, active;
switch (erts_schedulers_state(&total,
&online,
&active,
1)) {
case ERTS_SCHDLR_SSPND_DONE: {
Eterm *hp = HAlloc(BIF_P, 4);
res = TUPLE3(hp,
make_small(total),
make_small(online),
make_small(active));
BIF_RET(res);
}
case ERTS_SCHDLR_SSPND_YIELD_RESTART:
ERTS_VBUMP_ALL_REDS(BIF_P);
BIF_TRAP1(bif_export[BIF_system_info_1],
BIF_P, BIF_ARG_1);
default:
ASSERT(0);
BIF_ERROR(BIF_P, EXC_INTERNAL_ERROR);
}
#endif
} else if (ERTS_IS_ATOM_STR("schedulers_online", BIF_ARG_1)) {
#ifndef ERTS_SMP
BIF_RET(make_small(1));
#else
Uint total, online, active;
switch (erts_schedulers_state(&total, &online, &active, 1)) {
case ERTS_SCHDLR_SSPND_DONE:
BIF_RET(make_small(online));
case ERTS_SCHDLR_SSPND_YIELD_RESTART:
ERTS_VBUMP_ALL_REDS(BIF_P);
BIF_TRAP1(bif_export[BIF_system_info_1],
BIF_P, BIF_ARG_1);
default:
ASSERT(0);
BIF_ERROR(BIF_P, EXC_INTERNAL_ERROR);
}
#endif
} else if (ERTS_IS_ATOM_STR("schedulers_active", BIF_ARG_1)) {
#ifndef ERTS_SMP
BIF_RET(make_small(1));
#else
Uint total, online, active;
switch (erts_schedulers_state(&total, &online, &active, 1)) {
case ERTS_SCHDLR_SSPND_DONE:
BIF_RET(make_small(active));
case ERTS_SCHDLR_SSPND_YIELD_RESTART:
ERTS_VBUMP_ALL_REDS(BIF_P);
BIF_TRAP1(bif_export[BIF_system_info_1],
BIF_P, BIF_ARG_1);
default:
ASSERT(0);
BIF_ERROR(BIF_P, EXC_INTERNAL_ERROR);
}
#endif
} else if (ERTS_IS_ATOM_STR("run_queues", BIF_ARG_1)) {
res = make_small(erts_no_run_queues);
BIF_RET(res);
} else if (ERTS_IS_ATOM_STR("port_parallelism", BIF_ARG_1)) {
res = erts_port_parallelism ? am_true : am_false;
BIF_RET(res);
} else if (ERTS_IS_ATOM_STR("c_compiler_used", BIF_ARG_1)) {
Eterm *hp = NULL;
Uint sz = 0;
(void) c_compiler_used(NULL, &sz);
if (sz)
hp = HAlloc(BIF_P, sz);
BIF_RET(c_compiler_used(&hp, NULL));
} else if (ERTS_IS_ATOM_STR("stop_memory_trace", BIF_ARG_1)) {
erts_mtrace_stop();
BIF_RET(am_true);
} else if (ERTS_IS_ATOM_STR("context_reductions", BIF_ARG_1)) {
BIF_RET(make_small(CONTEXT_REDS));
} else if (ERTS_IS_ATOM_STR("kernel_poll", BIF_ARG_1)) {
#ifdef ERTS_ENABLE_KERNEL_POLL
BIF_RET(erts_use_kernel_poll ? am_true : am_false);
#else
BIF_RET(am_false);
#endif
} else if (ERTS_IS_ATOM_STR("lock_checking", BIF_ARG_1)) {
#ifdef ERTS_ENABLE_LOCK_CHECK
BIF_RET(am_true);
#else
BIF_RET(am_false);
#endif
} else if (ERTS_IS_ATOM_STR("lock_counting", BIF_ARG_1)) {
#ifdef ERTS_ENABLE_LOCK_COUNT
BIF_RET(am_true);
#else
BIF_RET(am_false);
#endif
} else if (ERTS_IS_ATOM_STR("debug_compiled", BIF_ARG_1)) {
#ifdef DEBUG
BIF_RET(am_true);
#else
BIF_RET(am_false);
#endif
} else if (ERTS_IS_ATOM_STR("check_io", BIF_ARG_1)) {
BIF_RET(erts_check_io_info(BIF_P));
} else if (ERTS_IS_ATOM_STR("multi_scheduling_blockers", BIF_ARG_1)) {
#ifndef ERTS_SMP
BIF_RET(NIL);
#else
if (erts_no_schedulers == 1)
BIF_RET(NIL);
else
BIF_RET(erts_multi_scheduling_blockers(BIF_P));
#endif
} else if (ERTS_IS_ATOM_STR("modified_timing_level", BIF_ARG_1)) {
BIF_RET(ERTS_USE_MODIFIED_TIMING()
? make_small(erts_modified_timing_level)
: am_undefined);
} else if (ERTS_IS_ATOM_STR("port_tasks", BIF_ARG_1)) {
BIF_RET(am_true);
} else if (ERTS_IS_ATOM_STR("io_thread", BIF_ARG_1)) {
BIF_RET(am_false);
} else if (ERTS_IS_ATOM_STR("scheduling_statistics", BIF_ARG_1)) {
BIF_RET(erts_sched_stat_term(BIF_P, 0));
} else if (ERTS_IS_ATOM_STR("total_scheduling_statistics", BIF_ARG_1)) {
BIF_RET(erts_sched_stat_term(BIF_P, 1));
} else if (ERTS_IS_ATOM_STR("taints", BIF_ARG_1)) {
BIF_RET(erts_nif_taints(BIF_P));
} else if (ERTS_IS_ATOM_STR("reader_groups_map", BIF_ARG_1)) {
BIF_RET(erts_get_reader_groups_map(BIF_P));
} else if (ERTS_IS_ATOM_STR("dist_buf_busy_limit", BIF_ARG_1)) {
Uint hsz = 0;
(void) erts_bld_uint(NULL, &hsz, erts_dist_buf_busy_limit);
hp = hsz ? HAlloc(BIF_P, hsz) : NULL;
res = erts_bld_uint(&hp, NULL, erts_dist_buf_busy_limit);
BIF_RET(res);
} else if (ERTS_IS_ATOM_STR("ethread_info", BIF_ARG_1)) {
BIF_RET(erts_get_ethread_info(BIF_P));
}
else if (ERTS_IS_ATOM_STR("emu_args", BIF_ARG_1)) {
BIF_RET(erts_get_emu_args(BIF_P));
}
else if (ERTS_IS_ATOM_STR("beam_jump_table", BIF_ARG_1)) {
BIF_RET(erts_beam_jump_table() ? am_true : am_false);
}
else if (ERTS_IS_ATOM_STR("dynamic_trace", BIF_ARG_1)) {
#if defined(USE_DTRACE)
DECL_AM(dtrace);
BIF_RET(AM_dtrace);
#elif defined(USE_SYSTEMTAP)
DECL_AM(systemtap);
BIF_RET(AM_systemtap);
#else
BIF_RET(am_none);
#endif
}
else if (ERTS_IS_ATOM_STR("dynamic_trace_probes", BIF_ARG_1)) {
#if defined(USE_VM_PROBES)
BIF_RET(am_true);
#else
BIF_RET(am_false);
#endif
}
#ifdef ERTS_SMP
else if (ERTS_IS_ATOM_STR("thread_progress", BIF_ARG_1)) {
erts_thr_progress_dbg_print_state();
BIF_RET(am_true);
}
#endif
else if (ERTS_IS_ATOM_STR("compile_info",BIF_ARG_1)) {
Uint sz;
Eterm res = NIL, tup, text;
Eterm *hp = HAlloc(BIF_P, 3*(2 + 3) + /* three 2-tuples and three cons */
2*(strlen(erts_build_flags_CONFIG_H) +
strlen(erts_build_flags_CFLAGS) +
strlen(erts_build_flags_LDFLAGS)));
sz = strlen(erts_build_flags_CONFIG_H);
text = buf_to_intlist(&hp, erts_build_flags_CONFIG_H, sz, NIL);
tup = TUPLE2(hp, am_config_h, text); hp += 3;
res = CONS(hp, tup, res); hp += 2;
sz = strlen(erts_build_flags_CFLAGS);
text = buf_to_intlist(&hp, erts_build_flags_CFLAGS, sz, NIL);
tup = TUPLE2(hp, am_cflags, text); hp += 3;
res = CONS(hp, tup, res); hp += 2;
sz = strlen(erts_build_flags_LDFLAGS);
text = buf_to_intlist(&hp, erts_build_flags_LDFLAGS, sz, NIL);
tup = TUPLE2(hp, am_ldflags, text); hp += 3;
res = CONS(hp, tup, res); hp += 2;
BIF_RET(res);
}
else if (ERTS_IS_ATOM_STR("ets_limit",BIF_ARG_1)) {
BIF_RET(make_small(erts_db_get_max_tabs()));
}
BIF_ERROR(BIF_P, BADARG);
}
/**********************************************************************/
/* Return information on ports */
/* Info:
** id Port index
** connected (Pid)
** links List of pids
** name String
** input Number of bytes input from port program
** output Number of bytes output to the port program
** os_pid The child's process ID
*/
Eterm
erts_bld_port_info(Eterm **hpp, ErlOffHeap *ohp, Uint *szp, Port *prt, Eterm item)
{
Eterm res = THE_NON_VALUE;
ERTS_SMP_LC_ASSERT(erts_lc_is_port_locked(prt));
if (item == am_id) {
if (hpp)
res = make_small(internal_port_index(prt->common.id));
if (szp) {
res = am_true;
goto done;
}
}
else if (item == am_links) {
MonitorInfoCollection mic;
int i;
Eterm item;
INIT_MONITOR_INFOS(mic);
erts_doforall_links(ERTS_P_LINKS(prt), &collect_one_link, &mic);
if (szp)
*szp += mic.sz;
if (hpp) {
res = NIL;
for (i = 0; i < mic.mi_i; i++) {
item = STORE_NC(hpp, ohp, mic.mi[i].entity);
res = CONS(*hpp, item, res);
*hpp += 2;
}
}
DESTROY_MONITOR_INFOS(mic);
if (szp) {
res = am_true;
goto done;
}
}
else if (item == am_monitors) {
MonitorInfoCollection mic;
int i;
Eterm item;
INIT_MONITOR_INFOS(mic);
erts_doforall_monitors(ERTS_P_MONITORS(prt), &collect_one_origin_monitor, &mic);
if (szp)
*szp += mic.sz;
if (hpp) {
res = NIL;
for (i = 0; i < mic.mi_i; i++) {
Eterm t;
item = STORE_NC(hpp, ohp, mic.mi[i].entity);
t = TUPLE2(*hpp, am_process, item);
*hpp += 3;
res = CONS(*hpp, t, res);
*hpp += 2;
}
}
DESTROY_MONITOR_INFOS(mic);
if (szp) {
res = am_true;
goto done;
}
}
else if (item == am_name) {
int count = sys_strlen(prt->name);
if (hpp)
res = buf_to_intlist(hpp, prt->name, count, NIL);
if (szp) {
*szp += 2*count;
res = am_true;
goto done;
}
}
else if (item == am_connected) {
if (hpp)
res = ERTS_PORT_GET_CONNECTED(prt); /* internal pid */
if (szp) {
res = am_true;
goto done;
}
}
else if (item == am_input) {
res = erts_bld_uint(hpp, szp, prt->bytes_in);
if (szp) {
res = am_true;
goto done;
}
}
else if (item == am_output) {
res = erts_bld_uint(hpp, szp, prt->bytes_out);
if (szp) {
res = am_true;
goto done;
}
}
else if (item == am_os_pid) {
res = (prt->os_pid < 0
? am_undefined
: erts_bld_uword(hpp, szp, (UWord) prt->os_pid));
if (szp) {
res = am_true;
goto done;
}
}
else if (item == am_registered_name) {
RegProc *reg = prt->common.u.alive.reg;
if (reg) {
res = reg->name;
if (szp) {
res = am_true;
goto done;
}
}
else {
if (szp)
return am_undefined;
return NIL;
}
}
else if (item == am_memory) {
/* All memory consumed in bytes (the Port struct should not be
included though).
*/
Uint size = 0;
erts_doforall_links(ERTS_P_LINKS(prt), &erts_one_link_size, &size);
size += erts_port_data_size(prt);
if (prt->linebuf)
size += sizeof(LineBuf) + prt->linebuf->ovsiz;
/* ... */
/* All memory allocated by the driver should be included, but it is
hard to retrieve... */
res = erts_bld_uint(hpp, szp, size);
if (szp) {
res = am_true;
goto done;
}
}
else if (item == am_queue_size) {
Uint ioq_size = erts_port_ioq_size(prt);
res = erts_bld_uint(hpp, szp, ioq_size);
if (szp) {
res = am_true;
goto done;
}
}
else if (ERTS_IS_ATOM_STR("locking", item)) {
if (hpp) {
#ifndef ERTS_SMP
res = am_false;
#else
if (erts_atomic32_read_nob(&prt->state)
& ERTS_PORT_SFLG_PORT_SPECIFIC_LOCK) {
DECL_AM(port_level);
ASSERT(prt->drv_ptr->flags
& ERL_DRV_FLAG_USE_PORT_LOCKING);
res = AM_port_level;
}
else {
DECL_AM(driver_level);
ASSERT(!(prt->drv_ptr->flags
& ERL_DRV_FLAG_USE_PORT_LOCKING));
res = AM_driver_level;
}
#endif
}
if (szp) {
res = am_true;
goto done;
}
}
else if (item == am_parallelism) {
if (szp) {
res = am_true;
goto done;
}
res = ((ERTS_PTS_FLG_PARALLELISM &
erts_smp_atomic32_read_nob(&prt->sched.flags))
? am_true
: am_false);
}
else {
if (szp)
return am_false;
return THE_NON_VALUE;
}
done:
if (szp)
*szp += 3;
if (hpp) {
res = TUPLE2(*hpp, item, res);
*hpp += 3;
}
return res;
}
BIF_RETTYPE
fun_info_2(BIF_ALIST_2)
{
Process* p = BIF_P;
Eterm fun = BIF_ARG_1;
Eterm what = BIF_ARG_2;
Eterm* hp;
Eterm val;
if (is_fun(fun)) {
ErlFunThing* funp = (ErlFunThing *) fun_val(fun);
switch (what) {
case am_type:
hp = HAlloc(p, 3);
val = am_local;
break;
case am_pid:
hp = HAlloc(p, 3);
val = funp->creator;
break;
case am_module:
hp = HAlloc(p, 3);
val = funp->fe->module;
break;
case am_new_index:
hp = HAlloc(p, 3);
val = make_small(funp->fe->index);
break;
case am_new_uniq:
val = new_binary(p, funp->fe->uniq, 16);
hp = HAlloc(p, 3);
break;
case am_index:
hp = HAlloc(p, 3);
val = make_small(funp->fe->old_index);
break;
case am_uniq:
hp = HAlloc(p, 3);
val = make_small(funp->fe->old_uniq);
break;
case am_env:
{
Uint num_free = funp->num_free;
int i;
hp = HAlloc(p, 3 + 2*num_free);
val = NIL;
for (i = num_free-1; i >= 0; i--) {
val = CONS(hp, funp->env[i], val);
hp += 2;
}
}
break;
case am_refc:
val = erts_make_integer(erts_smp_atomic_read_nob(&funp->fe->refc), p);
hp = HAlloc(p, 3);
break;
case am_arity:
hp = HAlloc(p, 3);
val = make_small(funp->arity);
break;
case am_name:
hp = HAlloc(p, 3);
val = funp->fe->address[-2];
break;
default:
goto error;
}
} else if (is_export(fun)) {
Export* exp = (Export *) ((UWord) (export_val(fun))[1]);
switch (what) {
case am_type:
hp = HAlloc(p, 3);
val = am_external;
break;
case am_pid:
hp = HAlloc(p, 3);
val = am_undefined;
break;
case am_module:
hp = HAlloc(p, 3);
val = exp->code[0];
break;
case am_new_index:
hp = HAlloc(p, 3);
val = am_undefined;
break;
case am_new_uniq:
hp = HAlloc(p, 3);
val = am_undefined;
break;
case am_index:
hp = HAlloc(p, 3);
val = am_undefined;
break;
case am_uniq:
hp = HAlloc(p, 3);
val = am_undefined;
break;
case am_env:
hp = HAlloc(p, 3);
val = NIL;
break;
case am_refc:
hp = HAlloc(p, 3);
val = am_undefined;
break;
case am_arity:
hp = HAlloc(p, 3);
val = make_small(exp->code[2]);
break;
case am_name:
hp = HAlloc(p, 3);
val = exp->code[1];
break;
default:
goto error;
}
} else {
error:
BIF_ERROR(p, BADARG);
}
return TUPLE2(hp, what, val);
}
BIF_RETTYPE is_process_alive_1(BIF_ALIST_1)
{
if(is_internal_pid(BIF_ARG_1)) {
Process *rp;
if (BIF_ARG_1 == BIF_P->common.id)
BIF_RET(am_true);
rp = erts_proc_lookup_raw(BIF_ARG_1);
if (!rp) {
BIF_RET(am_false);
}
else {
if (erts_smp_atomic32_read_acqb(&rp->state)
& (ERTS_PSFLG_PENDING_EXIT|ERTS_PSFLG_EXITING))
ERTS_BIF_AWAIT_X_DATA_TRAP(BIF_P, BIF_ARG_1, am_false);
else
BIF_RET(am_true);
}
}
else if(is_external_pid(BIF_ARG_1)) {
if(external_pid_dist_entry(BIF_ARG_1) == erts_this_dist_entry)
BIF_RET(am_false); /* A pid from an old incarnation of this node */
else
BIF_ERROR(BIF_P, BADARG);
}
else {
BIF_ERROR(BIF_P, BADARG);
}
}
BIF_RETTYPE process_display_2(BIF_ALIST_2)
{
Process *rp;
if (BIF_ARG_2 != am_backtrace)
BIF_ERROR(BIF_P, BADARG);
rp = erts_pid2proc_nropt(BIF_P, ERTS_PROC_LOCK_MAIN,
BIF_ARG_1, ERTS_PROC_LOCKS_ALL);
if(!rp) {
BIF_ERROR(BIF_P, BADARG);
}
if (rp == ERTS_PROC_LOCK_BUSY)
ERTS_BIF_YIELD2(bif_export[BIF_process_display_2], BIF_P,
BIF_ARG_1, BIF_ARG_2);
if (rp != BIF_P && ERTS_PROC_PENDING_EXIT(rp)) {
Eterm args[2] = {BIF_ARG_1, BIF_ARG_2};
erts_smp_proc_unlock(rp, ERTS_PROC_LOCKS_ALL);
ERTS_BIF_AWAIT_X_APPLY_TRAP(BIF_P,
BIF_ARG_1,
am_erlang,
am_process_display,
args,
2);
}
erts_stack_dump(ERTS_PRINT_STDERR, NULL, rp);
#ifdef ERTS_SMP
erts_smp_proc_unlock(rp, (BIF_P == rp
? ERTS_PROC_LOCKS_ALL_MINOR
: ERTS_PROC_LOCKS_ALL));
#endif
BIF_RET(am_true);
}
/* this is a general call which return some possibly useful information */
BIF_RETTYPE statistics_1(BIF_ALIST_1)
{
Eterm res;
Eterm* hp;
if (BIF_ARG_1 == am_scheduler_wall_time) {
res = erts_sched_wall_time_request(BIF_P, 0, 0);
if (is_non_value(res))
BIF_RET(am_undefined);
BIF_TRAP1(gather_sched_wall_time_res_trap, BIF_P, res);
} else if (BIF_ARG_1 == am_context_switches) {
Eterm cs = erts_make_integer(erts_get_total_context_switches(), BIF_P);
hp = HAlloc(BIF_P, 3);
res = TUPLE2(hp, cs, SMALL_ZERO);
BIF_RET(res);
} else if (BIF_ARG_1 == am_garbage_collection) {
res = erts_gc_info_request(BIF_P);
if (is_non_value(res))
BIF_RET(am_undefined);
BIF_TRAP1(gather_gc_info_res_trap, BIF_P, res);
} else if (BIF_ARG_1 == am_reductions) {
Uint reds;
Uint diff;
Uint hsz = 3;
Eterm b1, b2;
erts_get_total_reductions(&reds, &diff);
(void) erts_bld_uint(NULL, &hsz, reds);
(void) erts_bld_uint(NULL, &hsz, diff);
hp = HAlloc(BIF_P, hsz);
b1 = erts_bld_uint(&hp, NULL, reds);
b2 = erts_bld_uint(&hp, NULL, diff);
res = TUPLE2(hp, b1, b2);
BIF_RET(res);
} else if (BIF_ARG_1 == am_exact_reductions) {
Uint reds;
Uint diff;
Uint hsz = 3;
Eterm b1, b2;
erts_get_exact_total_reductions(BIF_P, &reds, &diff);
(void) erts_bld_uint(NULL, &hsz, reds);
(void) erts_bld_uint(NULL, &hsz, diff);
hp = HAlloc(BIF_P, hsz);
b1 = erts_bld_uint(&hp, NULL, reds);
b2 = erts_bld_uint(&hp, NULL, diff);
res = TUPLE2(hp, b1, b2);
BIF_RET(res);
} else if (BIF_ARG_1 == am_runtime) {
UWord u1, u2, dummy;
Eterm b1, b2;
elapsed_time_both(&u1,&dummy,&u2,&dummy);
b1 = erts_make_integer(u1,BIF_P);
b2 = erts_make_integer(u2,BIF_P);
hp = HAlloc(BIF_P,3);
res = TUPLE2(hp, b1, b2);
BIF_RET(res);
} else if (BIF_ARG_1 == am_run_queue) {
res = erts_run_queues_len(NULL);
BIF_RET(make_small(res));
} else if (BIF_ARG_1 == am_wall_clock) {
UWord w1, w2;
Eterm b1, b2;
wall_clock_elapsed_time_both(&w1, &w2);
b1 = erts_make_integer((Uint) w1,BIF_P);
b2 = erts_make_integer((Uint) w2,BIF_P);
hp = HAlloc(BIF_P,3);
res = TUPLE2(hp, b1, b2);
BIF_RET(res);
} else if (BIF_ARG_1 == am_io) {
Eterm r1, r2;
Eterm in, out;
Uint hsz = 9;
Uint bytes_in = (Uint) erts_smp_atomic_read_nob(&erts_bytes_in);
Uint bytes_out = (Uint) erts_smp_atomic_read_nob(&erts_bytes_out);
(void) erts_bld_uint(NULL, &hsz, bytes_in);
(void) erts_bld_uint(NULL, &hsz, bytes_out);
hp = HAlloc(BIF_P, hsz);
in = erts_bld_uint(&hp, NULL, bytes_in);
out = erts_bld_uint(&hp, NULL, bytes_out);
r1 = TUPLE2(hp, am_input, in);
hp += 3;
r2 = TUPLE2(hp, am_output, out);
hp += 3;
BIF_RET(TUPLE2(hp, r1, r2));
}
else if (ERTS_IS_ATOM_STR("run_queues", BIF_ARG_1)) {
Eterm res, *hp, **hpp;
Uint sz, *szp;
int no_qs = erts_no_run_queues;
Uint *qszs = erts_alloc(ERTS_ALC_T_TMP,sizeof(Uint)*no_qs*2);
(void) erts_run_queues_len(qszs);
sz = 0;
szp = &sz;
hpp = NULL;
while (1) {
int i;
for (i = 0; i < no_qs; i++)
qszs[no_qs+i] = erts_bld_uint(hpp, szp, qszs[i]);
res = erts_bld_tuplev(hpp, szp, no_qs, &qszs[no_qs]);
if (hpp) {
erts_free(ERTS_ALC_T_TMP, qszs);
BIF_RET(res);
}
hp = HAlloc(BIF_P, sz);
szp = NULL;
hpp = &hp;
}
}
BIF_ERROR(BIF_P, BADARG);
}
BIF_RETTYPE error_logger_warning_map_0(BIF_ALIST_0)
{
BIF_RET(erts_error_logger_warnings);
}
static erts_smp_atomic_t available_internal_state;
BIF_RETTYPE erts_debug_get_internal_state_1(BIF_ALIST_1)
{
/*
* NOTE: Only supposed to be used for testing, and debugging.
*/
if (!erts_smp_atomic_read_nob(&available_internal_state)) {
BIF_ERROR(BIF_P, EXC_UNDEF);
}
if (is_atom(BIF_ARG_1)) {
if (ERTS_IS_ATOM_STR("reds_left", BIF_ARG_1)) {
/* Used by (emulator) */
BIF_RET(make_small((Uint) ERTS_BIF_REDS_LEFT(BIF_P)));
}
else if (ERTS_IS_ATOM_STR("node_and_dist_references", BIF_ARG_1)) {
/* Used by node_container_SUITE (emulator) */
Eterm res = erts_get_node_and_dist_references(BIF_P);
BIF_RET(res);
}
else if (ERTS_IS_ATOM_STR("monitoring_nodes", BIF_ARG_1)) {
BIF_RET(erts_processes_monitoring_nodes(BIF_P));
}
else if (ERTS_IS_ATOM_STR("next_pid", BIF_ARG_1)
|| ERTS_IS_ATOM_STR("next_port", BIF_ARG_1)) {
/* Used by node_container_SUITE (emulator) */
Sint res;
if (ERTS_IS_ATOM_STR("next_pid", BIF_ARG_1))
res = erts_ptab_test_next_id(&erts_proc, 0, 0);
else
res = erts_ptab_test_next_id(&erts_port, 0, 0);
if (res < 0)
BIF_RET(am_false);
BIF_RET(erts_make_integer(res, BIF_P));
}
else if (ERTS_IS_ATOM_STR("DbTable_words", BIF_ARG_1)) {
/* Used by ets_SUITE (stdlib) */
size_t words = (sizeof(DbTable) + sizeof(Uint) - 1)/sizeof(Uint);
BIF_RET(make_small((Uint) words));
}
else if (ERTS_IS_ATOM_STR("check_io_debug", BIF_ARG_1)) {
/* Used by (emulator) */
int res;
#ifdef HAVE_ERTS_CHECK_IO_DEBUG
erts_smp_proc_unlock(BIF_P,ERTS_PROC_LOCK_MAIN);
res = erts_check_io_debug();
erts_smp_proc_lock(BIF_P,ERTS_PROC_LOCK_MAIN);
#else
res = 0;
#endif
ASSERT(res >= 0);
BIF_RET(erts_make_integer((Uint) res, BIF_P));
}
else if (ERTS_IS_ATOM_STR("process_info_args", BIF_ARG_1)) {
/* Used by process_SUITE (emulator) */
int i;
Eterm res = NIL;
Uint *hp = HAlloc(BIF_P, 2*ERTS_PI_ARGS);
for (i = ERTS_PI_ARGS-1; i >= 0; i--) {
res = CONS(hp, pi_args[i], res);
hp += 2;
}
BIF_RET(res);
}
else if (ERTS_IS_ATOM_STR("processes", BIF_ARG_1)) {
/* Used by process_SUITE (emulator) */
BIF_RET(erts_debug_ptab_list(BIF_P, &erts_proc));
}
else if (ERTS_IS_ATOM_STR("processes_bif_info", BIF_ARG_1)) {
/* Used by process_SUITE (emulator) */
BIF_RET(erts_debug_ptab_list_bif_info(BIF_P, &erts_proc));
}
else if (ERTS_IS_ATOM_STR("max_atom_out_cache_index", BIF_ARG_1)) {
/* Used by distribution_SUITE (emulator) */
BIF_RET(make_small((Uint) erts_debug_max_atom_out_cache_index()));
}
else if (ERTS_IS_ATOM_STR("nbalance", BIF_ARG_1)) {
Uint n;
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
n = erts_debug_nbalance();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
BIF_RET(erts_make_integer(n, BIF_P));
}
else if (ERTS_IS_ATOM_STR("available_internal_state", BIF_ARG_1)) {
BIF_RET(am_true);
}
else if (ERTS_IS_ATOM_STR("force_heap_frags", BIF_ARG_1)) {
#ifdef FORCE_HEAP_FRAGS
BIF_RET(am_true);
#else
BIF_RET(am_false);
#endif
}
else if (ERTS_IS_ATOM_STR("memory", BIF_ARG_1)) {
Eterm res;
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_thr_progress_block();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
res = erts_memory(NULL, NULL, BIF_P, THE_NON_VALUE);
erts_smp_thr_progress_unblock();
BIF_RET(res);
}
else if (ERTS_IS_ATOM_STR("mmap", BIF_ARG_1)) {
BIF_RET(erts_mmap_debug_info(BIF_P));
}
}
else if (is_tuple(BIF_ARG_1)) {
Eterm* tp = tuple_val(BIF_ARG_1);
switch (arityval(tp[0])) {
case 2: {
if (ERTS_IS_ATOM_STR("process_status", tp[1])) {
/* Used by timer process_SUITE, timer_bif_SUITE, and
node_container_SUITE (emulator) */
if (is_internal_pid(tp[2])) {
BIF_RET(erts_process_status(BIF_P,
ERTS_PROC_LOCK_MAIN,
NULL,
tp[2]));
}
}
else if (ERTS_IS_ATOM_STR("link_list", tp[1])) {
/* Used by erl_link_SUITE (emulator) */
if(is_internal_pid(tp[2])) {
Eterm res;
Process *p;
p = erts_pid2proc(BIF_P,
ERTS_PROC_LOCK_MAIN,
tp[2],
ERTS_PROC_LOCK_LINK);
if (!p) {
ERTS_SMP_ASSERT_IS_NOT_EXITING(BIF_P);
BIF_RET(am_undefined);
}
res = make_link_list(BIF_P, ERTS_P_LINKS(p), NIL);
erts_smp_proc_unlock(p, ERTS_PROC_LOCK_LINK);
BIF_RET(res);
}
else if(is_internal_port(tp[2])) {
Eterm res;
Port *p = erts_id2port_sflgs(tp[2],
BIF_P,
ERTS_PROC_LOCK_MAIN,
ERTS_PORT_SFLGS_INVALID_LOOKUP);
if(!p)
BIF_RET(am_undefined);
res = make_link_list(BIF_P, ERTS_P_LINKS(p), NIL);
erts_port_release(p);
BIF_RET(res);
}
else if(is_node_name_atom(tp[2])) {
DistEntry *dep = erts_find_dist_entry(tp[2]);
if(dep) {
Eterm subres;
erts_smp_de_links_lock(dep);
subres = make_link_list(BIF_P, dep->nlinks, NIL);
subres = make_link_list(BIF_P, dep->node_links, subres);
erts_smp_de_links_unlock(dep);
erts_deref_dist_entry(dep);
BIF_RET(subres);
} else {
BIF_RET(am_undefined);
}
}
}
else if (ERTS_IS_ATOM_STR("monitor_list", tp[1])) {
/* Used by erl_link_SUITE (emulator) */
if(is_internal_pid(tp[2])) {
Process *p;
Eterm res;
p = erts_pid2proc(BIF_P,
ERTS_PROC_LOCK_MAIN,
tp[2],
ERTS_PROC_LOCK_LINK);
if (!p) {
ERTS_SMP_ASSERT_IS_NOT_EXITING(BIF_P);
BIF_RET(am_undefined);
}
res = make_monitor_list(BIF_P, ERTS_P_MONITORS(p));
erts_smp_proc_unlock(p, ERTS_PROC_LOCK_LINK);
BIF_RET(res);
} else if(is_node_name_atom(tp[2])) {
DistEntry *dep = erts_find_dist_entry(tp[2]);
if(dep) {
Eterm ml;
erts_smp_de_links_lock(dep);
ml = make_monitor_list(BIF_P, dep->monitors);
erts_smp_de_links_unlock(dep);
erts_deref_dist_entry(dep);
BIF_RET(ml);
} else {
BIF_RET(am_undefined);
}
}
}
else if (ERTS_IS_ATOM_STR("channel_number", tp[1])) {
Eterm res;
DistEntry *dep = erts_find_dist_entry(tp[2]);
if (!dep)
res = am_undefined;
else {
Uint cno = dist_entry_channel_no(dep);
res = make_small(cno);
erts_deref_dist_entry(dep);
}
BIF_RET(res);
}
else if (ERTS_IS_ATOM_STR("have_pending_exit", tp[1])) {
Process *rp = erts_pid2proc(BIF_P, ERTS_PROC_LOCK_MAIN,
tp[2], ERTS_PROC_LOCK_STATUS);
if (!rp) {
BIF_RET(am_undefined);
}
else {
Eterm res = ERTS_PROC_PENDING_EXIT(rp) ? am_true : am_false;
erts_smp_proc_unlock(rp, ERTS_PROC_LOCK_STATUS);
BIF_RET(res);
}
}
else if (ERTS_IS_ATOM_STR("binary_info", tp[1])) {
Eterm bin = tp[2];
if (is_binary(bin)) {
Eterm real_bin = bin;
Eterm res = am_true;
ErlSubBin* sb = (ErlSubBin *) binary_val(real_bin);
if (sb->thing_word == HEADER_SUB_BIN) {
real_bin = sb->orig;
}
if (*binary_val(real_bin) == HEADER_PROC_BIN) {
ProcBin* pb;
Binary* val;
Eterm SzTerm;
Uint hsz = 3 + 5;
Eterm* hp;
DECL_AM(refc_binary);
pb = (ProcBin *) binary_val(real_bin);
val = pb->val;
(void) erts_bld_uint(NULL, &hsz, pb->size);
(void) erts_bld_uint(NULL, &hsz, val->orig_size);
hp = HAlloc(BIF_P, hsz);
/* Info about the Binary* object */
SzTerm = erts_bld_uint(&hp, NULL, val->orig_size);
res = TUPLE2(hp, am_binary, SzTerm);
hp += 3;
/* Info about the ProcBin* object */
SzTerm = erts_bld_uint(&hp, NULL, pb->size);
res = TUPLE4(hp, AM_refc_binary, SzTerm,
res, make_small(pb->flags));
} else { /* heap binary */
DECL_AM(heap_binary);
res = AM_heap_binary;
}
BIF_RET(res);
}
}
else if (ERTS_IS_ATOM_STR("term_to_binary_no_funs", tp[1])) {
Uint dflags = (DFLAG_EXTENDED_REFERENCES |
DFLAG_EXTENDED_PIDS_PORTS |
DFLAG_BIT_BINARIES);
BIF_RET(erts_term_to_binary(BIF_P, tp[2], 0, dflags));
}
else if (ERTS_IS_ATOM_STR("dist_port", tp[1])) {
Eterm res = am_undefined;
DistEntry *dep = erts_sysname_to_connected_dist_entry(tp[2]);
if (dep) {
erts_smp_de_rlock(dep);
if (is_internal_port(dep->cid))
res = dep->cid;
erts_smp_de_runlock(dep);
erts_deref_dist_entry(dep);
}
BIF_RET(res);
}
else if (ERTS_IS_ATOM_STR("atom_out_cache_index", tp[1])) {
/* Used by distribution_SUITE (emulator) */
if (is_atom(tp[2])) {
BIF_RET(make_small(
(Uint)
erts_debug_atom_to_out_cache_index(tp[2])));
}
}
else if (ERTS_IS_ATOM_STR("fake_scheduler_bindings", tp[1])) {
return erts_fake_scheduler_bindings(BIF_P, tp[2]);
}
else if (ERTS_IS_ATOM_STR("reader_groups_map", tp[1])) {
Sint groups;
if (is_not_small(tp[2]))
BIF_ERROR(BIF_P, BADARG);
groups = signed_val(tp[2]);
if (groups < (Sint) 1 || groups > (Sint) INT_MAX)
BIF_ERROR(BIF_P, BADARG);
BIF_RET(erts_debug_reader_groups_map(BIF_P, (int) groups));
}
break;
}
default:
break;
}
}
BIF_ERROR(BIF_P, BADARG);
}
static erts_smp_atomic_t hipe_test_reschedule_flag;
BIF_RETTYPE erts_debug_set_internal_state_2(BIF_ALIST_2)
{
/*
* NOTE: Only supposed to be used for testing, and debugging.
*/
if (ERTS_IS_ATOM_STR("available_internal_state", BIF_ARG_1)
&& (BIF_ARG_2 == am_true || BIF_ARG_2 == am_false)) {
erts_aint_t on = (erts_aint_t) (BIF_ARG_2 == am_true);
erts_aint_t prev_on = erts_smp_atomic_xchg_nob(&available_internal_state, on);
if (on) {
erts_dsprintf_buf_t *dsbufp = erts_create_logger_dsbuf();
erts_dsprintf(dsbufp, "Process %T ", BIF_P->common.id);
if (erts_is_alive)
erts_dsprintf(dsbufp, "on node %T ", erts_this_node->sysname);
erts_dsprintf(dsbufp,
"enabled access to the emulator internal state.\n");
erts_dsprintf(dsbufp,
"NOTE: This is an erts internal test feature and "
"should *only* be used by OTP test-suites.\n");
erts_send_warning_to_logger(BIF_P->group_leader, dsbufp);
}
BIF_RET(prev_on ? am_true : am_false);
}
if (!erts_smp_atomic_read_nob(&available_internal_state)) {
BIF_ERROR(BIF_P, EXC_UNDEF);
}
if (is_atom(BIF_ARG_1)) {
if (ERTS_IS_ATOM_STR("reds_left", BIF_ARG_1)) {
Sint reds;
if (term_to_Sint(BIF_ARG_2, &reds) != 0) {
if (0 <= reds && reds <= CONTEXT_REDS) {
if (!ERTS_PROC_GET_SAVED_CALLS_BUF(BIF_P))
BIF_P->fcalls = reds;
else
BIF_P->fcalls = reds - CONTEXT_REDS;
}
BIF_RET(am_true);
}
}
else if (ERTS_IS_ATOM_STR("block", BIF_ARG_1)
|| ERTS_IS_ATOM_STR("sleep", BIF_ARG_1)) {
int block = ERTS_IS_ATOM_STR("block", BIF_ARG_1);
Sint ms;
if (term_to_Sint(BIF_ARG_2, &ms) != 0) {
if (ms > 0) {
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
if (block)
erts_smp_thr_progress_block();
while (erts_milli_sleep((long) ms) != 0);
if (block)
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
}
BIF_RET(am_true);
}
}
else if (ERTS_IS_ATOM_STR("block_scheduler", BIF_ARG_1)) {
Sint ms;
if (term_to_Sint(BIF_ARG_2, &ms) != 0) {
if (ms > 0) {
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
while (erts_milli_sleep((long) ms) != 0);
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
}
BIF_RET(am_true);
}
}
else if (ERTS_IS_ATOM_STR("next_pid", BIF_ARG_1)
|| ERTS_IS_ATOM_STR("next_port", BIF_ARG_1)) {
/* Used by node_container_SUITE (emulator) */
Uint next;
if (term_to_Uint(BIF_ARG_2, &next) != 0) {
Sint res;
if (ERTS_IS_ATOM_STR("next_pid", BIF_ARG_1))
res = erts_ptab_test_next_id(&erts_proc, 1, next);
else
res = erts_ptab_test_next_id(&erts_port, 1, next);
if (res < 0)
BIF_RET(am_false);
BIF_RET(erts_make_integer(res, BIF_P));
}
}
else if (ERTS_IS_ATOM_STR("force_gc", BIF_ARG_1)) {
/* Used by signal_SUITE (emulator) */
Process *rp = erts_pid2proc(BIF_P, ERTS_PROC_LOCK_MAIN,
BIF_ARG_2, ERTS_PROC_LOCK_MAIN);
if (!rp) {
BIF_RET(am_false);
}
else {
FLAGS(rp) |= F_FORCE_GC;
if (BIF_P != rp)
erts_smp_proc_unlock(rp, ERTS_PROC_LOCK_MAIN);
BIF_RET(am_true);
}
}
else if (ERTS_IS_ATOM_STR("gc_state", BIF_ARG_1)) {
/* Used by process_SUITE (emulator) */
int res, enable;
switch (BIF_ARG_2) {
case am_true: enable = 1; break;
case am_false: enable = 0; break;
default: BIF_ERROR(BIF_P, BADARG); break;
}
res = (BIF_P->flags & F_DISABLE_GC) ? am_false : am_true;
erts_set_gc_state(BIF_P, enable);
BIF_RET(res);
}
else if (ERTS_IS_ATOM_STR("send_fake_exit_signal", BIF_ARG_1)) {
/* Used by signal_SUITE (emulator) */
/* Testcases depend on the exit being received via
a pending exit when the receiver is the same as
the caller. */
if (is_tuple(BIF_ARG_2)) {
Eterm* tp = tuple_val(BIF_ARG_2);
if (arityval(tp[0]) == 3
&& (is_pid(tp[1]) || is_port(tp[1]))
&& is_internal_pid(tp[2])) {
int xres;
ErtsProcLocks rp_locks = ERTS_PROC_LOCKS_XSIG_SEND;
Process *rp = erts_pid2proc(BIF_P, ERTS_PROC_LOCK_MAIN,
tp[2], rp_locks);
if (!rp) {
DECL_AM(dead);
BIF_RET(AM_dead);
}
#ifdef ERTS_SMP
if (BIF_P == rp)
rp_locks |= ERTS_PROC_LOCK_MAIN;
#endif
xres = erts_send_exit_signal(NULL, /* NULL in order to
force a pending exit
when we send to our
selves. */
tp[1],
rp,
&rp_locks,
tp[3],
NIL,
NULL,
0);
#ifdef ERTS_SMP
if (BIF_P == rp)
rp_locks &= ~ERTS_PROC_LOCK_MAIN;
#endif
erts_smp_proc_unlock(rp, rp_locks);
if (xres > 1) {
DECL_AM(message);
BIF_RET(AM_message);
}
else if (xres == 0) {
DECL_AM(unaffected);
BIF_RET(AM_unaffected);
}
else {
DECL_AM(exit);
BIF_RET(AM_exit);
}
}
}
}
else if (ERTS_IS_ATOM_STR("colliding_names", BIF_ARG_1)) {
/* Used by ets_SUITE (stdlib) */
if (is_tuple(BIF_ARG_2)) {
Eterm* tpl = tuple_val(BIF_ARG_2);
Uint cnt;
if (arityval(tpl[0]) == 2 && is_atom(tpl[1]) &&
term_to_Uint(tpl[2], &cnt)) {
BIF_RET(erts_ets_colliding_names(BIF_P,tpl[1],cnt));
}
}
}
else if (ERTS_IS_ATOM_STR("binary_loop_limit", BIF_ARG_1)) {
/* Used by binary_module_SUITE (stdlib) */
Uint max_loops;
if (is_atom(BIF_ARG_2) && ERTS_IS_ATOM_STR("default", BIF_ARG_2)) {
max_loops = erts_binary_set_loop_limit(-1);
BIF_RET(make_small(max_loops));
} else if (term_to_Uint(BIF_ARG_2, &max_loops) != 0) {
max_loops = erts_binary_set_loop_limit(max_loops);
BIF_RET(make_small(max_loops));
}
}
else if (ERTS_IS_ATOM_STR("re_loop_limit", BIF_ARG_1)) {
/* Used by re_SUITE (stdlib) */
Uint max_loops;
if (is_atom(BIF_ARG_2) && ERTS_IS_ATOM_STR("default", BIF_ARG_2)) {
max_loops = erts_re_set_loop_limit(-1);
BIF_RET(make_small(max_loops));
} else if (term_to_Uint(BIF_ARG_2, &max_loops) != 0) {
max_loops = erts_re_set_loop_limit(max_loops);
BIF_RET(make_small(max_loops));
}
}
else if (ERTS_IS_ATOM_STR("unicode_loop_limit", BIF_ARG_1)) {
/* Used by unicode_SUITE (stdlib) */
Uint max_loops;
if (is_atom(BIF_ARG_2) && ERTS_IS_ATOM_STR("default", BIF_ARG_2)) {
max_loops = erts_unicode_set_loop_limit(-1);
BIF_RET(make_small(max_loops));
} else if (term_to_Uint(BIF_ARG_2, &max_loops) != 0) {
max_loops = erts_unicode_set_loop_limit(max_loops);
BIF_RET(make_small(max_loops));
}
}
else if (ERTS_IS_ATOM_STR("hipe_test_reschedule_suspend", BIF_ARG_1)) {
/* Used by hipe test suites */
erts_aint_t flag = erts_smp_atomic_read_nob(&hipe_test_reschedule_flag);
if (!flag && BIF_ARG_2 != am_false) {
erts_smp_atomic_set_nob(&hipe_test_reschedule_flag, 1);
erts_suspend(BIF_P, ERTS_PROC_LOCK_MAIN, NULL);
ERTS_BIF_YIELD2(bif_export[BIF_erts_debug_set_internal_state_2],
BIF_P, BIF_ARG_1, BIF_ARG_2);
}
erts_smp_atomic_set_nob(&hipe_test_reschedule_flag, !flag);
BIF_RET(NIL);
}
else if (ERTS_IS_ATOM_STR("hipe_test_reschedule_resume", BIF_ARG_1)) {
/* Used by hipe test suites */
Eterm res = am_false;
Process *rp = erts_pid2proc(BIF_P, ERTS_PROC_LOCK_MAIN,
BIF_ARG_2, ERTS_PROC_LOCK_STATUS);
if (rp) {
erts_resume(rp, ERTS_PROC_LOCK_STATUS);
res = am_true;
erts_smp_proc_unlock(rp, ERTS_PROC_LOCK_STATUS);
}
BIF_RET(res);
}
else if (ERTS_IS_ATOM_STR("test_long_gc_sleep", BIF_ARG_1)) {
if (term_to_Uint(BIF_ARG_2, &erts_test_long_gc_sleep) > 0)
BIF_RET(am_true);
}
else if (ERTS_IS_ATOM_STR("abort", BIF_ARG_1)) {
erl_exit(ERTS_ABORT_EXIT, "%T\n", BIF_ARG_2);
}
else if (ERTS_IS_ATOM_STR("kill_dist_connection", BIF_ARG_1)) {
DistEntry *dep = erts_sysname_to_connected_dist_entry(BIF_ARG_2);
if (!dep)
BIF_RET(am_false);
else {
Uint32 con_id;
erts_smp_de_rlock(dep);
con_id = dep->connection_id;
erts_smp_de_runlock(dep);
erts_kill_dist_connection(dep, con_id);
erts_deref_dist_entry(dep);
BIF_RET(am_true);
}
}
else if (ERTS_IS_ATOM_STR("not_running_optimization", BIF_ARG_1)) {
#ifdef ERTS_SMP
int old_use_opt, use_opt;
switch (BIF_ARG_2) {
case am_true:
use_opt = 1;
break;
case am_false:
use_opt = 0;
break;
default:
BIF_ERROR(BIF_P, BADARG);
}
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_thr_progress_block();
old_use_opt = !erts_disable_proc_not_running_opt;
erts_disable_proc_not_running_opt = !use_opt;
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
BIF_RET(old_use_opt ? am_true : am_false);
#else
BIF_ERROR(BIF_P, EXC_NOTSUP);
#endif
}
else if (ERTS_IS_ATOM_STR("wait", BIF_ARG_1)) {
if (ERTS_IS_ATOM_STR("deallocations", BIF_ARG_2)) {
if (erts_debug_wait_deallocations(BIF_P)) {
ERTS_BIF_YIELD_RETURN(BIF_P, am_ok);
}
}
}
}
BIF_ERROR(BIF_P, BADARG);
}
#ifdef ERTS_ENABLE_LOCK_COUNT
static Eterm lcnt_build_lock_stats_term(Eterm **hpp, Uint *szp, erts_lcnt_lock_stats_t *stats, Eterm res) {
Uint tries = 0, colls = 0;
unsigned long timer_s = 0, timer_ns = 0, timer_n = 0;
unsigned int line = 0;
Eterm af, uil;
Eterm uit, uic;
Eterm uits, uitns, uitn;
Eterm tt, tstat, tloc, t;
/* term:
* [{{file, line}, {tries, colls, {seconds, nanoseconds, n_blocks}}}]
*/
tries = (Uint) ethr_atomic_read(&stats->tries);
colls = (Uint) ethr_atomic_read(&stats->colls);
line = stats->line;
timer_s = stats->timer.s;
timer_ns = stats->timer.ns;
timer_n = stats->timer_n;
af = erts_atom_put(stats->file, strlen(stats->file), ERTS_ATOM_ENC_LATIN1, 1);
uil = erts_bld_uint( hpp, szp, line);
tloc = erts_bld_tuple(hpp, szp, 2, af, uil);
uit = erts_bld_uint( hpp, szp, tries);
uic = erts_bld_uint( hpp, szp, colls);
uits = erts_bld_uint( hpp, szp, timer_s);
uitns = erts_bld_uint( hpp, szp, timer_ns);
uitn = erts_bld_uint( hpp, szp, timer_n);
tt = erts_bld_tuple(hpp, szp, 3, uits, uitns, uitn);
tstat = erts_bld_tuple(hpp, szp, 3, uit, uic, tt);
t = erts_bld_tuple(hpp, szp, 2, tloc, tstat);
res = erts_bld_cons( hpp, szp, t, res);
return res;
}
static Eterm lcnt_build_lock_term(Eterm **hpp, Uint *szp, erts_lcnt_lock_t *lock, Eterm res) {
Eterm name, type, id, stats = NIL, t;
Process *proc = NULL;
char *ltype;
int i;
/* term:
* [{name, id, type, stats()}]
*/
ASSERT(lock->name);
ltype = erts_lcnt_lock_type(lock->flag);
ASSERT(ltype);
type = erts_atom_put(ltype, strlen(ltype), ERTS_ATOM_ENC_LATIN1, 1);
name = erts_atom_put(lock->name, strlen(lock->name), ERTS_ATOM_ENC_LATIN1, 1);
if (lock->flag & ERTS_LCNT_LT_ALLOC) {
/* use allocator types names as id's for allocator locks */
ltype = (char *) ERTS_ALC_A2AD(signed_val(lock->id));
id = erts_atom_put(ltype, strlen(ltype), ERTS_ATOM_ENC_LATIN1, 1);
} else if (lock->flag & ERTS_LCNT_LT_PROCLOCK) {
/* use registered names as id's for process locks if available */
proc = erts_proc_lookup(lock->id);
if (proc && proc->common.u.alive.reg) {
id = proc->common.u.alive.reg->name;
} else {
/* otherwise use process id */
id = lock->id;
}
} else {
id = lock->id;
}
for (i = 0; i < lock->n_stats; i++) {
stats = lcnt_build_lock_stats_term(hpp, szp, &(lock->stats[i]), stats);
}
t = erts_bld_tuple(hpp, szp, 4, name, id, type, stats);
res = erts_bld_cons( hpp, szp, t, res);
return res;
}
static Eterm lcnt_build_result_term(Eterm **hpp, Uint *szp, erts_lcnt_data_t *data, Eterm res) {
Eterm dts, dtns, tdt, adur, tdur, aloc, lloc = NIL, tloc;
erts_lcnt_lock_t *lock = NULL;
char *str_duration = "duration";
char *str_locks = "locks";
/* term:
* [{'duration', {seconds, nanoseconds}}, {'locks', locks()}]
*/
/* duration tuple */
dts = erts_bld_uint( hpp, szp, data->duration.s);
dtns = erts_bld_uint( hpp, szp, data->duration.ns);
tdt = erts_bld_tuple(hpp, szp, 2, dts, dtns);
adur = erts_atom_put(str_duration, strlen(str_duration), ERTS_ATOM_ENC_LATIN1, 1);
tdur = erts_bld_tuple(hpp, szp, 2, adur, tdt);
/* lock tuple */
aloc = erts_atom_put(str_locks, strlen(str_locks), ERTS_ATOM_ENC_LATIN1, 1);
for (lock = data->current_locks->head; lock != NULL ; lock = lock->next ) {
lloc = lcnt_build_lock_term(hpp, szp, lock, lloc);
}
for (lock = data->deleted_locks->head; lock != NULL ; lock = lock->next ) {
lloc = lcnt_build_lock_term(hpp, szp, lock, lloc);
}
tloc = erts_bld_tuple(hpp, szp, 2, aloc, lloc);
res = erts_bld_cons( hpp, szp, tloc, res);
res = erts_bld_cons( hpp, szp, tdur, res);
return res;
}
#endif
BIF_RETTYPE erts_debug_lock_counters_1(BIF_ALIST_1)
{
#ifdef ERTS_ENABLE_LOCK_COUNT
Eterm res = NIL;
#endif
if (BIF_ARG_1 == am_enabled) {
#ifdef ERTS_ENABLE_LOCK_COUNT
BIF_RET(am_true);
#else
BIF_RET(am_false);
#endif
}
#ifdef ERTS_ENABLE_LOCK_COUNT
else if (BIF_ARG_1 == am_info) {
erts_lcnt_data_t *data;
Uint hsize = 0;
Uint *szp;
Eterm* hp;
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_thr_progress_block();
erts_lcnt_set_rt_opt(ERTS_LCNT_OPT_SUSPEND);
data = erts_lcnt_get_data();
/* calculate size */
szp = &hsize;
lcnt_build_result_term(NULL, szp, data, NIL);
/* alloc and build */
hp = HAlloc(BIF_P, hsize);
res = lcnt_build_result_term(&hp, NULL, data, res);
erts_lcnt_clear_rt_opt(ERTS_LCNT_OPT_SUSPEND);
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
BIF_RET(res);
} else if (BIF_ARG_1 == am_clear) {
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_thr_progress_block();
erts_lcnt_clear_counters();
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
BIF_RET(am_ok);
} else if (is_tuple(BIF_ARG_1)) {
Eterm* tp = tuple_val(BIF_ARG_1);
switch (arityval(tp[0])) {
case 2: {
int opt = 0;
int val = 0;
if (ERTS_IS_ATOM_STR("copy_save", tp[1])) {
opt = ERTS_LCNT_OPT_COPYSAVE;
} else if (ERTS_IS_ATOM_STR("process_locks", tp[1])) {
opt = ERTS_LCNT_OPT_PROCLOCK;
} else if (ERTS_IS_ATOM_STR("port_locks", tp[1])) {
opt = ERTS_LCNT_OPT_PORTLOCK;
} else if (ERTS_IS_ATOM_STR("suspend", tp[1])) {
opt = ERTS_LCNT_OPT_SUSPEND;
} else if (ERTS_IS_ATOM_STR("location", tp[1])) {
opt = ERTS_LCNT_OPT_LOCATION;
} else {
BIF_ERROR(BIF_P, BADARG);
}
if (tp[2] == am_true) {
val = 1;
} else if (tp[2] == am_false) {
val = 0;
} else {
BIF_ERROR(BIF_P, BADARG);
}
erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_smp_thr_progress_block();
if (val) {
res = erts_lcnt_set_rt_opt(opt) ? am_true : am_false;
} else {
res = erts_lcnt_clear_rt_opt(opt) ? am_true : am_false;
}
#ifdef ERTS_SMP
if (res != tp[2]) {
if (opt == ERTS_LCNT_OPT_PORTLOCK) {
erts_lcnt_enable_io_lock_count(val);
} else if (opt == ERTS_LCNT_OPT_PROCLOCK) {
erts_lcnt_enable_proc_lock_count(val);
}
}
#endif
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
BIF_RET(res);
break;
}
default:
break;
}
}
#endif
BIF_ERROR(BIF_P, BADARG);
}
static void os_info_init(void)
{
Eterm type = erts_atom_put((byte *) os_type, strlen(os_type), ERTS_ATOM_ENC_LATIN1, 1);
Eterm flav;
int major, minor, build;
char* buf = erts_alloc(ERTS_ALC_T_TMP, 1024); /* More than enough */
Eterm* hp;
os_flavor(buf, 1024);
flav = erts_atom_put((byte *) buf, strlen(buf), ERTS_ATOM_ENC_LATIN1, 1);
erts_free(ERTS_ALC_T_TMP, (void *) buf);
hp = erts_alloc(ERTS_ALC_T_LL_TEMP_TERM, (3+4)*sizeof(Eterm));
os_type_tuple = TUPLE2(hp, type, flav);
hp += 3;
os_version(&major, &minor, &build);
os_version_tuple = TUPLE3(hp,
make_small(major),
make_small(minor),
make_small(build));
}
void
erts_bif_info_init(void)
{
erts_smp_atomic_init_nob(&available_internal_state, 0);
erts_smp_atomic_init_nob(&hipe_test_reschedule_flag, 0);
alloc_info_trap = erts_export_put(am_erlang, am_alloc_info, 1);
alloc_sizes_trap = erts_export_put(am_erlang, am_alloc_sizes, 1);
gather_sched_wall_time_res_trap
= erts_export_put(am_erlang, am_gather_sched_wall_time_result, 1);
gather_gc_info_res_trap
= erts_export_put(am_erlang, am_gather_gc_info_result, 1);
process_info_init();
os_info_init();
}
