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urbit/pkg/hair/notes/c/worker.c
Benjamin Summers e6d8d382dc Moved *.hs into a single package.
2019-05-08 13:00:12 -07:00

948 lines
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/* worker/main.c
**
** the main loop of a worker process.
*/
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <setjmp.h>
#include <gmp.h>
#include <sigsegv.h>
#include <stdint.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <uv.h>
#include <errno.h>
#include <ncurses/curses.h>
#include <termios.h>
#include <ncurses/term.h>
#include "all.h"
#include <vere/vere.h>
typedef struct _u3_worker {
c3_w len_w; // boot sequence length
u3_noun roe; // lifecycle formulas
c3_d sen_d; // last event requested
c3_d dun_d; // last event processed
c3_l mug_l; // hash of state
c3_d key_d[4]; // disk key
u3_moat inn_u; // message input
u3_mojo out_u; // message output
c3_c* dir_c; // execution directory (pier)
} u3_worker;
static u3_worker u3V;
/*
:: worker to daemon protocol
::
|%
:: +plea: from worker to daemon
::
+$ plea
$% :: status on startup
::
$: %play
$= p
:: ~ if no snapshot
::
%- unit
:: p: event number expected
:: q: mug of kernel
:: r: identity, fake flag
::
[p=@ q=@ r=[our=@p fak=?]]
==
:: event executed unchanged (in response to %work)
::
$: %done
:: p: event number
:: q: mug of kernel
:: r: effects
::
[p=@ q=@ r=(list ovum)]
==
:: replace event and retry (in response to %work)
::
$: %work
:: p: event number
:: q: mug of kernel
:: r: replacement event (at date)
::
[p=@ q=@ r=(pair date ovum)]
==
:: sends a line to stderr while computing event
::
$: %stdr
:: p: event number
:: q: output cord
::
[p=@ q=cord]
==
:: send slog hint while computing event
::
$: %slog
:: p: event number
:: q: priority
:: r: output tank
::
[p=@ q=@ r=tank]
== ==
:: +writ: from daemon to worker
::
+$ writ
$% :: prepare to boot
::
:: p: identity
:: q: fake?
:: r: number of boot formulas
::
[%boot p=@p q=? r=@]
:: exit immediately
::
:: p: exit code
::
[%exit p=@]
:: save snapshot to disk
::
:: p: event number
::
[%save p=@]
:: execute event
::
$: %work
:: p: event number
:: q: a jammed noun [mug [date ovum]]
::
[p=@ q=@]
== ==
--
*/
/* _worker_space(): print n spaces.
*/
void _worker_space(FILE* fil_u, c3_w n)
{
for (; n > 0; n--)
(fprintf(fil_u," "));
}
/* _worker_print_memory(): print memory amount.
**
** Helper for _worker_prof(), just an un-captioned u3a_print_memory().
*/
void
_worker_print_memory(FILE* fil_u, c3_w wor_w)
{
c3_w byt_w = (wor_w * 4);
c3_w gib_w = (byt_w / 1000000000);
c3_w mib_w = (byt_w % 1000000000) / 1000000;
c3_w kib_w = (byt_w % 1000000) / 1000;
c3_w bib_w = (byt_w % 1000);
if ( gib_w ) {
(fprintf(fil_u, "GB/%d.%03d.%03d.%03d\r\n",
gib_w, mib_w, kib_w, bib_w));
}
else if ( mib_w ) {
(fprintf(fil_u, "MB/%d.%03d.%03d\r\n", mib_w, kib_w, bib_w));
}
else if ( kib_w ) {
(fprintf(fil_u, "KB/%d.%03d\r\n", kib_w, bib_w));
}
else {
(fprintf(fil_u, "B/%d\r\n", bib_w));
}
}
/* _worker_prof(): print memory profile. RETAIN.
*/
c3_w
_worker_prof(FILE* fil_u, c3_w den, u3_noun mas)
{
c3_w tot_w = 0;
u3_noun h_mas, t_mas;
if ( c3n == u3r_cell(mas, &h_mas, &t_mas) ) {
_worker_space(fil_u, den);
fprintf(fil_u, "mistyped mass\r\n");
return tot_w;
}
else if ( _(u3du(h_mas)) ) {
_worker_space(fil_u, den);
fprintf(fil_u, "mistyped mass head\r\n");
{
c3_c* lab_c = u3m_pretty(h_mas);
fprintf(fil_u, "h_mas: %s", lab_c);
free(lab_c);
}
return tot_w;
}
else {
_worker_space(fil_u, den);
{
c3_c* lab_c = u3m_pretty(h_mas);
fprintf(fil_u, "%s: ", lab_c);
free(lab_c);
}
u3_noun it_mas, tt_mas;
if ( c3n == u3r_cell(t_mas, &it_mas, &tt_mas) ) {
fprintf(fil_u, "mistyped mass tail\r\n");
return tot_w;
}
else if ( c3y == it_mas ) {
tot_w += u3a_mark_noun(tt_mas);
_worker_print_memory(fil_u, tot_w);
#if 1
/* The basic issue here is that tt_mas is included in .sac
* (the whole profile), so they can't both be roots in the
* normal sense. When we mark .sac later on, we want tt_mas
* to appear unmarked, but its children should be already
* marked.
*/
if ( _(u3a_is_dog(tt_mas)) ) {
u3a_box* box_u = u3a_botox(u3a_to_ptr(tt_mas));
#ifdef U3_MEMORY_DEBUG
if ( 1 == box_u->eus_w ) {
box_u->eus_w = 0xffffffff;
}
else {
box_u->eus_w -= 1;
}
#else
if ( -1 == (c3_w)box_u->use_w ) {
box_u->use_w = 0x80000000;
}
else {
box_u->use_w += 1;
}
#endif
}
#endif
return tot_w;
}
else if ( c3n == it_mas ) {
fprintf(fil_u, "\r\n");
while ( _(u3du(tt_mas)) ) {
tot_w += _worker_prof(fil_u, den+2, u3h(tt_mas));
tt_mas = u3t(tt_mas);
}
_worker_space(fil_u, den);
fprintf(fil_u, "--");
_worker_print_memory(fil_u, tot_w);
return tot_w;
}
else {
_worker_space(fil_u, den);
fprintf(fil_u, "mistyped (strange) mass tail\r\n");
return tot_w;
}
}
}
/* _worker_grab(): garbage collect, checking for profiling. RETAIN.
*/
static void
_worker_grab(u3_noun sac, u3_noun ovo, u3_noun vir)
{
if ( u3_nul == sac) {
if ( u3C.wag_w & (u3o_debug_ram | u3o_check_corrupt) ) {
u3m_grab(sac, ovo, vir, u3_none);
}
}
else {
c3_w usr_w = 0, man_w = 0, sac_w = 0, ova_w = 0, roe_w = 0, vir_w = 0;
FILE* fil_u;
#ifdef U3_MEMORY_LOG
{
u3_noun wen = u3dc("scot", c3__da, u3k(u3A->now));
c3_c* wen_c = u3r_string(wen);
c3_c nam_c[2048];
snprintf(nam_c, 2048, "%s/.urb/put/mass", u3P.dir_c);
struct stat st;
if ( -1 == stat(nam_c, &st) ) {
mkdir(nam_c, 0700);
}
c3_c man_c[2048];
snprintf(man_c, 2048, "%s/%s.txt", nam_c, wen_c);
fil_u = fopen(man_c, "w");
fprintf(fil_u, "%s\r\n", wen_c);
free(wen_c);
u3z(wen);
}
#else
{
fil_u = stderr;
}
#endif
c3_assert( u3R == &(u3H->rod_u) );
fprintf(fil_u, "\r\n");
usr_w = _worker_prof(fil_u, 0, sac);
u3a_print_memory(fil_u, "total userspace", usr_w);
man_w = u3m_mark(fil_u);
sac_w = u3a_mark_noun(sac);
u3a_print_memory(fil_u, "space profile", sac_w);
ova_w = u3a_mark_noun(ovo);
u3a_print_memory(fil_u, "event", ova_w);
roe_w = u3a_mark_noun(u3V.roe);
u3a_print_memory(fil_u, "lifecycle events", roe_w);
vir_w = u3a_mark_noun(vir);
u3a_print_memory(fil_u, "effects", vir_w);
u3a_print_memory(fil_u, "total marked", usr_w + man_w + sac_w + ova_w + vir_w);
u3a_print_memory(fil_u, "sweep", u3a_sweep());
#ifdef U3_MEMORY_LOG
{
fclose(fil_u);
}
#endif
}
}
/* _worker_fail(): failure stub.
*/
static void
_worker_fail(void* vod_p, const c3_c* wut_c)
{
u3l_log("work: fail: %s\r\n", wut_c);
exit(1);
}
/* _worker_send(): send result back to daemon.
*/
static void
_worker_send(u3_noun job)
{
u3_newt_write(&u3V.out_u, u3ke_jam(job), 0);
}
/* _worker_send_replace(): send replacement job back to daemon.
*/
static void
_worker_send_replace(c3_d evt_d, u3_noun job)
{
u3l_log("worker_send_replace %" PRIu64 " %s\r\n",
evt_d,
u3r_string(u3h(u3t(u3t(job)))));
_worker_send(u3nt(c3__work,
u3i_chubs(1, &evt_d),
u3ke_jam(u3nc(u3V.mug_l, job))));
}
/* _worker_send_complete(): report completion.
*/
static void
_worker_send_complete(u3_noun vir)
{
_worker_send(u3nq(c3__done,
u3i_chubs(1, &u3V.dun_d),
u3V.mug_l,
vir));
}
/* _worker_send_stdr(): send stderr output
*/
static void
_worker_send_stdr(c3_c* str_c)
{
_worker_send(u3nt(c3__stdr, u3i_chubs(1, &u3V.sen_d), u3i_string(str_c)));
}
/* _worker_send_slog(): send hint output (hod is [priority tank]).
*/
static void
_worker_send_slog(u3_noun hod)
{
_worker_send(u3nt(c3__slog, u3i_chubs(1, &u3V.sen_d), hod));
}
/* _worker_lame(): event failed, replace with error event.
*/
static void
_worker_lame(c3_d evt_d, u3_noun now, u3_noun ovo, u3_noun why, u3_noun tan)
{
u3_noun rep;
u3_noun wir, tag, cad;
u3x_trel(ovo, &wir, &tag, &cad);
// a deterministic error (%exit) in a network packet (%hear)
// generates a negative-acknowlegement attempt (%hole).
//
// A comment from the old implementation:
// There should be a separate path for crypto failures,
// to prevent timing attacks, but isn't right now. To deal
// with a crypto failure, just drop the packet.
//
if ( (c3__hear == tag) && (c3__exit == why) ) {
rep = u3nt(u3k(wir), c3__hole, u3k(cad));
}
// failed event notifications (%crud) are replaced with
// an even more generic notifications, on a generic arvo wire.
// N.B this must not be allowed to fail!
//
// [%warn original-event-tag=@tas combined-trace=(list tank)]
//
else if ( c3__crud == tag ) {
u3_noun lef = u3nc(c3__leaf, u3i_tape("crude crashed!"));
u3_noun nat = u3kb_weld(u3k(u3t(cad)), u3nc(lef, u3k(tan)));
rep = u3nc(u3nt(u3_blip, c3__arvo, u3_nul),
u3nt(c3__warn, u3k(u3h(cad)), nat));
}
// failed failure failing fails
//
else if ( c3__warn == tag ) {
_worker_fail(0, "%warn replacement event failed");
c3_assert(0);
}
// failure notifications are sent on the same wire
//
// [%crud event-tag=@tas event-trace=(list tank)]
//
else {
// prepend failure mote to tank
//
u3_noun lef = u3nc(c3__leaf, u3kb_weld(u3i_tape("bail: "),
u3qc_rip(3, why)));
u3_noun nat = u3kb_weld(u3k(tan), u3nc(lef, u3_nul));
rep = u3nc(u3k(wir), u3nt(c3__crud, u3k(tag), nat));
}
_worker_send_replace(evt_d, u3nc(now, rep));
u3z(ovo); u3z(why); u3z(tan);
}
/* _worker_sure(): event succeeded, report completion.
*/
static void
_worker_sure(u3_noun ovo, u3_noun vir, u3_noun cor)
{
u3z(u3A->roc);
u3A->roc = cor;
u3A->ent_d = u3V.dun_d;
u3V.mug_l = u3r_mug(u3A->roc);
u3_noun sac = u3_nul;
// intercept |mass, observe |reset
//
{
u3_noun riv = vir;
c3_w i_w = 0;
while ( u3_nul != riv ) {
u3_noun fec = u3t(u3h(riv));
// assumes a max of one %mass effect per event
//
if ( c3__mass == u3h(fec) ) {
// save a copy of the %mass data
//
sac = u3k(u3t(fec));
// replace the %mass data with ~
//
// For efficient transmission to daemon.
//
riv = u3kb_weld(u3qb_scag(i_w, vir),
u3nc(u3nt(u3k(u3h(u3h(riv))), c3__mass, u3_nul),
u3qb_slag(1 + i_w, vir)));
u3z(vir);
vir = riv;
break;
}
// reclaim memory from persistent caches on |reset
//
if ( c3__vega == u3h(fec) ) {
u3m_reclaim();
}
riv = u3t(riv);
i_w++;
}
}
// XX this runs on replay too
//
_worker_grab(sac, ovo, vir);
_worker_send_complete(vir);
u3z(sac); u3z(ovo);
}
/* _worker_work_live(): apply event.
*/
static void
_worker_work_live(c3_d evt_d, u3_noun job)
{
u3_noun now, ovo, gon;
u3_noun last_date;
c3_assert(evt_d == u3V.dun_d + 1ULL);
u3V.sen_d = evt_d;
u3x_cell(job, &now, &ovo);
last_date = u3A->now;
u3A->now = u3k(now);
#ifdef U3_EVENT_TIME_DEBUG
{
struct timeval b4, f2, d0;
gettimeofday(&b4, 0);
if ( c3__belt != u3h(u3t(ovo)) ) {
c3_c* txt_c = u3r_string(u3h(u3t(ovo)));
u3l_log("work: %s (%" PRIu64 ") live\r\n", txt_c, evt_d);
}
}
#endif
gon = u3m_soft(0, u3v_poke, u3k(ovo));
#ifdef U3_EVENT_TIME_DEBUG
{
c3_c* txt_c = u3r_string(u3h(u3t(ovo)));
c3_w ms_w;
c3_w clr_w;
gettimeofday(&f2, 0);
timersub(&f2, &b4, &d0);
ms_w = (d0.tv_sec * 1000) + (d0.tv_usec / 1000);
clr_w = ms_w > 1000 ? 1 : ms_w < 100 ? 2 : 3; // red, green, yellow
if (c3__belt != u3h(u3t(ovo)) || clr_w != 2) {
u3l_log("\x1b[3%dm%%%s (%" PRIu64 ") %4d.%02dms\x1b[0m\n",
clr_w, txt_c, evt_d, ms_w,
(int) (d0.tv_usec % 1000) / 10);
}
free(txt_c);
}
#endif
if ( u3_blip != u3h(gon) ) {
// event rejected
//
u3V.sen_d = u3V.dun_d;
// restore previous time
//
u3_noun nex = u3A->now;
u3A->now = last_date;
u3_noun why, tan;
u3x_cell(gon, &why, &tan);
u3k(ovo); u3k(why); u3k(tan);
u3z(gon); u3z(job);
_worker_lame(evt_d, nex, ovo, why, tan);
}
else {
// event accepted
//
u3V.dun_d = u3V.sen_d;
u3z(last_date);
// vir/(list ovum) list of effects
// cor/arvo arvo core
//
u3_noun vir, cor;
u3x_trel(gon, 0, &vir, &cor);
u3k(ovo); u3k(vir); u3k(cor);
u3z(gon); u3z(job);
_worker_sure(ovo, vir, cor);
// reclaim memory from persistent caches periodically
//
// XX this is a hack to work around the fact that
// the bytecode caches grow rapidly and are not
// able to be simply capped (due to internal posts).
//
if ( 0 == (evt_d % 1000ULL) ) {
u3m_reclaim();
}
}
}
/* _worker_work_boot(): apply initial-stage event.
*/
static void
_worker_work_boot(c3_d evt_d, u3_noun job)
{
// here we asset on u3V.sen_d, because u3V.dun_d isn't set until
// after u3V.sen_d == u3V.len_w (ie, after the lifecycle evaluation)
//
c3_assert(evt_d == u3V.sen_d + 1ULL);
u3V.sen_d = evt_d;
u3V.roe = u3nc(job, u3V.roe);
u3l_log("work: (%" PRIu64 ")| boot\r\n", evt_d);
if ( u3V.len_w == evt_d ) {
u3_noun eve = u3kb_flop(u3V.roe);
u3V.roe = u3_nul;
u3l_log("work: (%" PRIu64 ")| pill: %x\r\n", evt_d, u3r_mug(eve));
if ( c3n == u3v_boot(eve) ) {
u3l_log("work: boot failed: invalid sequence (from pill)\r\n");
exit(1);
}
u3V.dun_d = evt_d;
u3V.mug_l = u3r_mug(u3A->roc);
u3A->ent_d = u3V.dun_d;
u3l_log("work: (%" PRIu64 ")| core: %x\r\n", evt_d, u3V.mug_l);
}
else {
// prior to the evaluation of the entire lifecycle sequence,
// we simply use the mug of the formula as the kernel mug
//
u3V.mug_l = u3r_mug(job);
}
_worker_send(u3nq(c3__done,
u3i_chubs(1, &evt_d),
u3V.mug_l,
u3_nul));
}
/* _worker_poke_work(): apply event.
*/
static void
_worker_poke_work(c3_d evt_d, // event number
c3_l mug_l, // mug of state
u3_noun job) // full event
{
if ( u3C.wag_w & u3o_trace ) {
if ( u3_Host.tra_u.con_w == 0 && u3_Host.tra_u.fun_w == 0 ) {
u3t_trace_open(u3V.dir_c);
}
else if ( u3_Host.tra_u.con_w >= 100000 ) {
u3t_trace_close();
u3t_trace_open(u3V.dir_c);
}
}
// Require mugs to match
//
// We use mugs to enforce that %work is always performed against
// the exact kernel we expect it to be. If it isn't, we have either
// event-log corruption or non-determism on replay, or programmer error
// in normal operation. In either case, we immediately exit.
//
if ( u3V.mug_l != mug_l ) {
u3l_log("work: invalid %%work for event %" PRIu64 ".\r\n", evt_d);
u3l_log("work: computed mug is %x but event %" PRIu64 " expected %x.\r\n",
u3V.mug_l,
evt_d,
mug_l);
_worker_fail(0, "bad jar");
return;
}
if ( evt_d <= u3V.len_w ) {
c3_c lab_c[8];
snprintf(lab_c, 8, "boot: %" PRIu64 "", evt_d);
u3t_event_trace(lab_c, 'B');
_worker_work_boot(evt_d, job);
u3t_event_trace(lab_c, 'E');
}
else {
u3_noun wir = u3h(u3t(job));
u3_noun cad = u3h(u3t(u3t(job)));
c3_c lab_c[2048];
snprintf(lab_c, 2048, "event %" PRIu64 ": [%s %s]", evt_d,
u3m_pretty_path(wir), u3m_pretty(cad));
u3t_event_trace(lab_c, 'B');
_worker_work_live(evt_d, job);
u3t_event_trace(lab_c, 'E');
}
}
/* _worker_poke_exit(): exit on command.
*/
static void
_worker_poke_exit(c3_w cod_w) // exit code
{
if ( u3C.wag_w & u3o_debug_cpu ) {
u3t_damp();
}
exit(cod_w);
}
/* _worker_poke_boot(): prepare to boot.
*/
static void
_worker_poke_boot(u3_noun who, u3_noun fak, c3_w len_w)
{
c3_assert( u3_none == u3A->our );
c3_assert( 0 != len_w );
u3A->our = who;
u3A->fak = fak;
u3V.len_w = len_w;
}
/* _worker_poke():
*/
void
_worker_poke(void* vod_p, u3_noun mat)
{
u3_noun jar = u3ke_cue(mat);
if ( c3y != u3du(jar) ) {
goto error;
}
else {
switch ( u3h(jar) ) {
default: {
goto error;
}
case c3__boot: {
u3_noun who, fak, len;
c3_w len_w;
if ( (c3n == u3r_qual(jar, 0, &who, &fak, &len)) ||
(c3n == u3ud(who)) ||
(1 < u3r_met(7, who)) ||
(c3n == u3ud(fak)) ||
(1 < u3r_met(0, fak)) ||
(c3n == u3ud(len)) ||
(1 < u3r_met(3, len)) )
{
goto error;
}
len_w = u3r_word(0, len);
u3k(who);
u3k(fak);
u3z(jar);
return _worker_poke_boot(who, fak, len_w);
}
case c3__work: {
u3_noun evt, jammed_entry, mug, job;
c3_d evt_d;
c3_l mug_l;
if ( (c3n == u3r_trel(jar, 0, &evt, &jammed_entry)) ||
(c3n == u3ud(evt)) ||
(1 != u3r_met(6, evt)) )
{
goto error;
}
u3_noun entry = u3qe_cue(jammed_entry);
if ( (c3y != u3du(entry)) ||
(c3n == u3r_cell(entry, &mug, &job)) ||
(c3n == u3ud(mug)) ||
(1 < u3r_met(5, mug)) ) {
goto error;
}
evt_d = u3r_chub(0, evt);
mug_l = u3r_word(0, mug);
u3k(job);
u3z(entry);
u3z(jar);
return _worker_poke_work(evt_d, mug_l, job);
}
case c3__exit: {
u3_noun cod;
c3_w cod_w;
if ( (c3n == u3r_cell(jar, 0, &cod)) ||
(c3n == u3ud(cod)) ||
(1 < u3r_met(3, cod)) )
{
goto error;
}
cod_w = u3r_word(0, cod);
u3z(jar);
return _worker_poke_exit(cod_w);
}
case c3__save: {
u3_noun evt;
c3_d evt_d;
if ( (c3n == u3r_cell(jar, 0, &evt)) ||
(c3n == u3ud(evt)) )
{
goto error;
}
evt_d = u3r_chub(0, evt);
u3z(jar);
c3_assert( evt_d == u3V.dun_d );
return u3e_save();
}
}
}
error: {
u3z(jar);
_worker_fail(0, "bad jar");
}
}
/* u3_worker_boot(): send startup message to manager.
*/
void
u3_worker_boot(void)
{
c3_d nex_d = 1ULL;
u3_noun dat = u3_nul;
if ( u3_none != u3A->our ) {
u3V.mug_l = u3r_mug(u3A->roc);
nex_d = u3V.dun_d + 1ULL;
dat = u3nc(u3_nul, u3nt(u3i_chubs(1, &nex_d),
u3V.mug_l,
u3nc(u3k(u3A->our), u3k(u3A->fak))));
// disable hashboard for fake ships
//
if ( c3y == u3A->fak ) {
u3C.wag_w |= u3o_hashless;
}
// no boot sequence expected
//
u3V.len_w = 0;
}
u3l_log("work: play %" PRIu64 "\r\n", nex_d);
_worker_send(u3nc(c3__play, dat));
}
/* main(): main() when run as urbit-worker
*/
c3_i
main(c3_i argc, c3_c* argv[])
{
uv_loop_t* lup_u = uv_default_loop();
c3_c* dir_c = argv[1];
c3_c* key_c = argv[2];
c3_c* wag_c = argv[3];
c3_assert(4 == argc);
memset(&u3V, 0, sizeof(u3V));
memset(&u3_Host.tra_u, 0, sizeof(u3_Host.tra_u));
/* load passkey
*/
{
sscanf(key_c, "%" PRIx64 ":%" PRIx64 ":%" PRIx64 ":%" PRIx64 "",
&u3V.key_d[0],
&u3V.key_d[1],
&u3V.key_d[2],
&u3V.key_d[3]);
}
/* load runtime config
*/
{
sscanf(wag_c, "%" SCNu32, &u3C.wag_w);
}
/* load pier directory
*/
{
u3V.dir_c = strdup(dir_c);
}
/* boot image
*/
{
u3V.sen_d = u3V.dun_d = u3m_boot(dir_c);
u3C.stderr_log_f = _worker_send_stdr;
u3C.slog_f = _worker_send_slog;
}
/* configure pipe to daemon process
*/
{
c3_i err_i;
err_i = uv_pipe_init(lup_u, &u3V.inn_u.pyp_u, 0);
c3_assert(!err_i);
uv_pipe_open(&u3V.inn_u.pyp_u, 0);
err_i = uv_pipe_init(lup_u, &u3V.out_u.pyp_u, 0);
c3_assert(!err_i);
uv_pipe_open(&u3V.out_u.pyp_u, 1);
}
/* set up writing
*/
u3V.out_u.bal_f = _worker_fail;
/* start reading
*/
u3V.inn_u.vod_p = &u3V;
u3V.inn_u.pok_f = _worker_poke;
u3V.inn_u.bal_f = _worker_fail;
u3_newt_read(&u3V.inn_u);
/* send start request
*/
u3_worker_boot();
/* enter loop
*/
uv_run(lup_u, UV_RUN_DEFAULT);
return 0;
}
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