node/src/node.cc at master · samrose/node · GitHub

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#include <node.h>

#include <v8-debug.h>

#include <node_dtrace.h>

#include <locale.h>

#include <stdio.h>

#include <stdlib.h>

#include <strings.h>

#include <string.h>

#include <limits.h> /* PATH_MAX */

#include <assert.h>

#include <unistd.h>

#include <errno.h>

#include <sys/types.h>

#include <unistd.h> /* setuid, getuid */

#ifdef __MINGW32__

# include <platform_win32.h> /* winapi_perror() */

# include <platform_win32_winsock.h> /* wsa_init() */

#endif

#ifdef __POSIX__

# include <dlfcn.h> /* dlopen(), dlsym() */

# include <pwd.h> /* getpwnam() */

# include <grp.h> /* getgrnam() */

#endif

#include <platform.h>

#include <node_buffer.h>

#include <node_io_watcher.h>

#include <node_net.h>

#include <node_events.h>

#include <node_cares.h>

#include <node_file.h>

#if 0

// not in use

# include <node_idle_watcher.h>

#endif

#include <node_http_parser.h>

#include <node_signal_watcher.h>

#include <node_stat_watcher.h>

#include <node_timer.h>

#include <node_child_process.h>

#include <node_constants.h>

#include <node_stdio.h>

#include <node_javascript.h>

#include <node_version.h>

#ifdef HAVE_OPENSSL

# include <node_crypto.h>

#endif

#include <node_script.h>

#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a)))

using namespace v8;

# ifdef __APPLE__

# include <crt_externs.h>

# define environ (*_NSGetEnviron())

# else

extern char **environ;

# endif

namespace node {

static Persistent<Object> process;

static Persistent<String> errno_symbol;

static Persistent<String> syscall_symbol;

static Persistent<String> errpath_symbol;

static Persistent<String> code_symbol;

static Persistent<String> rss_symbol;

static Persistent<String> vsize_symbol;

static Persistent<String> heap_total_symbol;

static Persistent<String> heap_used_symbol;

static Persistent<String> listeners_symbol;

static Persistent<String> uncaught_exception_symbol;

static Persistent<String> emit_symbol;

static char *eval_string = NULL;

static int option_end_index = 0;

static bool use_debug_agent = false;

static bool debug_wait_connect = false;

static int debug_port=5858;

static int max_stack_size = 0;

static ev_check check_tick_watcher;

static ev_prepare prepare_tick_watcher;

static ev_idle tick_spinner;

static bool need_tick_cb;

static Persistent<String> tick_callback_sym;

static ev_async enable_debug;

static ev_async eio_want_poll_notifier;

static ev_async eio_done_poll_notifier;

static ev_idle eio_poller;

// Buffer for getpwnam_r(), getgrpam_r() and other misc callers; keep this

// scoped at file-level rather than method-level to avoid excess stack usage.

static char getbuf[PATH_MAX + 1];

// We need to notify V8 when we're idle so that it can run the garbage

// collector. The interface to this is V8::IdleNotification(). It returns

// true if the heap hasn't be fully compacted, and needs to be run again.

// Returning false means that it doesn't have anymore work to do.

// A rather convoluted algorithm has been devised to determine when Node is

// idle. You'll have to figure it out for yourself.

static ev_check gc_check;

static ev_idle gc_idle;

static ev_timer gc_timer;

bool need_gc;

#define FAST_TICK 0.7

#define GC_WAIT_TIME 5.

#define RPM_SAMPLES 100

#define TICK_TIME(n) tick_times[(tick_time_head - (n)) % RPM_SAMPLES]

static ev_tstamp tick_times[RPM_SAMPLES];

static int tick_time_head;

static void StartGCTimer () {

if (!ev_is_active(&gc_timer)) {

ev_timer_start(EV_DEFAULT_UC_ &gc_timer);

ev_unref(EV_DEFAULT_UC);

}

static void StopGCTimer () {

if (ev_is_active(&gc_timer)) {

ev_ref(EV_DEFAULT_UC);

ev_timer_stop(EV_DEFAULT_UC_ &gc_timer);

}

static void Idle(EV_P_ ev_idle *watcher, int revents) {

assert(watcher == &gc_idle);

assert(revents == EV_IDLE);

//fprintf(stderr, "idle\n");

if (V8::IdleNotification()) {

ev_idle_stop(EV_A_ watcher);

StopGCTimer();

}

// Called directly after every call to select() (or epoll, or whatever)

static void Check(EV_P_ ev_check *watcher, int revents) {

assert(watcher == &gc_check);

assert(revents == EV_CHECK);

tick_times[tick_time_head] = ev_now(EV_DEFAULT_UC);

tick_time_head = (tick_time_head + 1) % RPM_SAMPLES;

StartGCTimer();

for (int i = 0; i < (int)(GC_WAIT_TIME/FAST_TICK); i++) {

double d = TICK_TIME(i+1) - TICK_TIME(i+2);

//printf("d = %f\n", d);

// If in the last 5 ticks the difference between

// ticks was less than 0.7 seconds, then continue.

if (d < FAST_TICK) {

//printf("---\n");

return;

}

// Otherwise start the gc!

//fprintf(stderr, "start idle 2\n");

ev_idle_start(EV_A_ &gc_idle);

}

static Handle<Value> NeedTickCallback(const Arguments& args) {

HandleScope scope;

need_tick_cb = true;

// TODO: this tick_spinner shouldn't be necessary. An ev_prepare should be

// sufficent, the problem is only in the case of the very last "tick" -

// there is nothing left to do in the event loop and libev will exit. The

// ev_prepare callback isn't called before exiting. Thus we start this

// tick_spinner to keep the event loop alive long enough to handle it.

ev_idle_start(EV_DEFAULT_UC_ &tick_spinner);

return Undefined();

}

static void Spin(EV_P_ ev_idle *watcher, int revents) {

assert(watcher == &tick_spinner);

assert(revents == EV_IDLE);

}

static void Tick(void) {

// Avoid entering a V8 scope.

if (!need_tick_cb) return;

need_tick_cb = false;

ev_idle_stop(EV_DEFAULT_UC_ &tick_spinner);

HandleScope scope;

if (tick_callback_sym.IsEmpty()) {

// Lazily set the symbol

tick_callback_sym =

Persistent<String>::New(String::NewSymbol("_tickCallback"));

}

Local<Value> cb_v = process->Get(tick_callback_sym);

if (!cb_v->IsFunction()) return;

Local<Function> cb = Local<Function>::Cast(cb_v);

TryCatch try_catch;

cb->Call(process, 0, NULL);

if (try_catch.HasCaught()) {

FatalException(try_catch);

}

static void PrepareTick(EV_P_ ev_prepare *watcher, int revents) {

assert(watcher == &prepare_tick_watcher);

assert(revents == EV_PREPARE);

Tick();

}

static void CheckTick(EV_P_ ev_check *watcher, int revents) {

assert(watcher == &check_tick_watcher);

assert(revents == EV_CHECK);

Tick();

}

static void DoPoll(EV_P_ ev_idle *watcher, int revents) {

assert(watcher == &eio_poller);

assert(revents == EV_IDLE);

//printf("eio_poller\n");

if (eio_poll() != -1) {

//printf("eio_poller stop\n");

ev_idle_stop(EV_DEFAULT_UC_ watcher);

}

// Called from the main thread.

static void WantPollNotifier(EV_P_ ev_async *watcher, int revents) {

assert(watcher == &eio_want_poll_notifier);

assert(revents == EV_ASYNC);

//printf("want poll notifier\n");

if (eio_poll() == -1) {

//printf("eio_poller start\n");

ev_idle_start(EV_DEFAULT_UC_ &eio_poller);

}

static void DonePollNotifier(EV_P_ ev_async *watcher, int revents) {

assert(watcher == &eio_done_poll_notifier);

assert(revents == EV_ASYNC);

//printf("done poll notifier\n");

if (eio_poll() != -1) {

//printf("eio_poller stop\n");

ev_idle_stop(EV_DEFAULT_UC_ &eio_poller);

}

// EIOWantPoll() is called from the EIO thread pool each time an EIO

// request (that is, one of the node.fs.* functions) has completed.

static void EIOWantPoll(void) {

// Signal the main thread that eio_poll need to be processed.

ev_async_send(EV_DEFAULT_UC_ &eio_want_poll_notifier);

}

static void EIODonePoll(void) {

// Signal the main thread that we should stop calling eio_poll().

// from the idle watcher.

ev_async_send(EV_DEFAULT_UC_ &eio_done_poll_notifier);

}

static inline const char *errno_string(int errorno) {

#define ERRNO_CASE(e) case e: return #e;

switch (errorno) {

#ifdef EACCES

ERRNO_CASE(EACCES);

#endif

#ifdef EADDRINUSE

ERRNO_CASE(EADDRINUSE);

#endif

#ifdef EADDRNOTAVAIL

ERRNO_CASE(EADDRNOTAVAIL);

#endif

#ifdef EAFNOSUPPORT

ERRNO_CASE(EAFNOSUPPORT);

#endif

#ifdef EAGAIN

ERRNO_CASE(EAGAIN);

#endif

#ifdef EWOULDBLOCK

# if EAGAIN != EWOULDBLOCK

ERRNO_CASE(EWOULDBLOCK);

# endif

#endif

#ifdef EALREADY

ERRNO_CASE(EALREADY);

#endif

#ifdef EBADF

ERRNO_CASE(EBADF);

#endif

#ifdef EBADMSG

ERRNO_CASE(EBADMSG);

#endif

#ifdef EBUSY

ERRNO_CASE(EBUSY);

#endif

#ifdef ECANCELED

ERRNO_CASE(ECANCELED);

#endif

#ifdef ECHILD

ERRNO_CASE(ECHILD);

#endif

#ifdef ECONNABORTED

ERRNO_CASE(ECONNABORTED);

#endif

#ifdef ECONNREFUSED

ERRNO_CASE(ECONNREFUSED);

#endif

#ifdef ECONNRESET

ERRNO_CASE(ECONNRESET);

#endif

#ifdef EDEADLK

ERRNO_CASE(EDEADLK);

#endif

#ifdef EDESTADDRREQ

ERRNO_CASE(EDESTADDRREQ);

#endif

#ifdef EDOM

ERRNO_CASE(EDOM);

#endif

#ifdef EDQUOT

ERRNO_CASE(EDQUOT);

#endif

#ifdef EEXIST

ERRNO_CASE(EEXIST);

#endif

#ifdef EFAULT

ERRNO_CASE(EFAULT);

#endif

#ifdef EFBIG

ERRNO_CASE(EFBIG);

#endif

#ifdef EHOSTUNREACH

ERRNO_CASE(EHOSTUNREACH);

#endif

#ifdef EIDRM

ERRNO_CASE(EIDRM);

#endif

#ifdef EILSEQ

ERRNO_CASE(EILSEQ);

#endif

#ifdef EINPROGRESS

ERRNO_CASE(EINPROGRESS);

#endif

#ifdef EINTR

ERRNO_CASE(EINTR);

#endif

#ifdef EINVAL

ERRNO_CASE(EINVAL);

#endif

#ifdef EIO

ERRNO_CASE(EIO);

#endif

#ifdef EISCONN

ERRNO_CASE(EISCONN);

#endif

#ifdef EISDIR

ERRNO_CASE(EISDIR);

#endif

#ifdef ELOOP

ERRNO_CASE(ELOOP);

#endif

#ifdef EMFILE

ERRNO_CASE(EMFILE);

#endif

#ifdef EMLINK

ERRNO_CASE(EMLINK);

#endif

#ifdef EMSGSIZE

ERRNO_CASE(EMSGSIZE);

#endif

#ifdef EMULTIHOP

ERRNO_CASE(EMULTIHOP);

#endif

#ifdef ENAMETOOLONG

ERRNO_CASE(ENAMETOOLONG);

#endif

#ifdef ENETDOWN

ERRNO_CASE(ENETDOWN);

#endif

#ifdef ENETRESET

ERRNO_CASE(ENETRESET);

#endif

#ifdef ENETUNREACH

ERRNO_CASE(ENETUNREACH);

#endif

#ifdef ENFILE

ERRNO_CASE(ENFILE);

#endif

#ifdef ENOBUFS

ERRNO_CASE(ENOBUFS);

#endif

#ifdef ENODATA

ERRNO_CASE(ENODATA);

#endif

#ifdef ENODEV

ERRNO_CASE(ENODEV);

#endif

#ifdef ENOENT

ERRNO_CASE(ENOENT);

#endif

#ifdef ENOEXEC

ERRNO_CASE(ENOEXEC);

#endif

#ifdef ENOLINK

ERRNO_CASE(ENOLINK);

#endif

#ifdef ENOLCK

# if ENOLINK != ENOLCK

ERRNO_CASE(ENOLCK);

# endif

#endif

#ifdef ENOMEM

ERRNO_CASE(ENOMEM);

#endif

#ifdef ENOMSG

ERRNO_CASE(ENOMSG);

#endif

#ifdef ENOPROTOOPT

ERRNO_CASE(ENOPROTOOPT);

#endif

#ifdef ENOSPC

ERRNO_CASE(ENOSPC);

#endif

#ifdef ENOSR

ERRNO_CASE(ENOSR);

#endif

#ifdef ENOSTR

ERRNO_CASE(ENOSTR);

#endif

#ifdef ENOSYS

ERRNO_CASE(ENOSYS);

#endif

#ifdef ENOTCONN

ERRNO_CASE(ENOTCONN);

#endif

#ifdef ENOTDIR

ERRNO_CASE(ENOTDIR);

#endif

#ifdef ENOTEMPTY

ERRNO_CASE(ENOTEMPTY);

#endif

#ifdef ENOTSOCK

ERRNO_CASE(ENOTSOCK);

#endif

#ifdef ENOTSUP

ERRNO_CASE(ENOTSUP);

#else

# ifdef EOPNOTSUPP

ERRNO_CASE(EOPNOTSUPP);

# endif

#endif

#ifdef ENOTTY

ERRNO_CASE(ENOTTY);

#endif

#ifdef ENXIO

ERRNO_CASE(ENXIO);

#endif

#ifdef EOVERFLOW

ERRNO_CASE(EOVERFLOW);

#endif

#ifdef EPERM

ERRNO_CASE(EPERM);

#endif

#ifdef EPIPE

ERRNO_CASE(EPIPE);

#endif

#ifdef EPROTO

ERRNO_CASE(EPROTO);

#endif

#ifdef EPROTONOSUPPORT

ERRNO_CASE(EPROTONOSUPPORT);

#endif

#ifdef EPROTOTYPE

ERRNO_CASE(EPROTOTYPE);

#endif

#ifdef ERANGE

ERRNO_CASE(ERANGE);

#endif

#ifdef EROFS

ERRNO_CASE(EROFS);

#endif

#ifdef ESPIPE

ERRNO_CASE(ESPIPE);

#endif

#ifdef ESRCH

ERRNO_CASE(ESRCH);

#endif

#ifdef ESTALE

ERRNO_CASE(ESTALE);

#endif

#ifdef ETIME

ERRNO_CASE(ETIME);

#endif

#ifdef ETIMEDOUT

ERRNO_CASE(ETIMEDOUT);

#endif

#ifdef ETXTBSY

ERRNO_CASE(ETXTBSY);

#endif

#ifdef EXDEV

ERRNO_CASE(EXDEV);

#endif

#ifdef WSAEINTR

ERRNO_CASE(WSAEINTR);

#endif

#ifdef WSAEBADF

ERRNO_CASE(WSAEBADF);

#endif

#ifdef WSAEACCES

ERRNO_CASE(WSAEACCES);

#endif

#ifdef WSAEFAULT

ERRNO_CASE(WSAEFAULT);

#endif

#ifdef WSAEINVAL

ERRNO_CASE(WSAEINVAL);

#endif

#ifdef WSAEMFILE

ERRNO_CASE(WSAEMFILE);

#endif

#ifdef WSAEWOULDBLOCK

ERRNO_CASE(WSAEWOULDBLOCK);

#endif

#ifdef WSAEINPROGRESS

ERRNO_CASE(WSAEINPROGRESS);

#endif

#ifdef WSAEALREADY

ERRNO_CASE(WSAEALREADY);

#endif

#ifdef WSAENOTSOCK

ERRNO_CASE(WSAENOTSOCK);

#endif

#ifdef WSAEDESTADDRREQ

ERRNO_CASE(WSAEDESTADDRREQ);

#endif

#ifdef WSAEMSGSIZE

ERRNO_CASE(WSAEMSGSIZE);

#endif

#ifdef WSAEPROTOTYPE

ERRNO_CASE(WSAEPROTOTYPE);

#endif

#ifdef WSAENOPROTOOPT

ERRNO_CASE(WSAENOPROTOOPT);

#endif

#ifdef WSAEPROTONOSUPPORT

ERRNO_CASE(WSAEPROTONOSUPPORT);

#endif

#ifdef WSAESOCKTNOSUPPORT

ERRNO_CASE(WSAESOCKTNOSUPPORT);

#endif

#ifdef WSAEOPNOTSUPP

ERRNO_CASE(WSAEOPNOTSUPP);

#endif

#ifdef WSAEPFNOSUPPORT

ERRNO_CASE(WSAEPFNOSUPPORT);

#endif

#ifdef WSAEAFNOSUPPORT

ERRNO_CASE(WSAEAFNOSUPPORT);

#endif

#ifdef WSAEADDRINUSE

ERRNO_CASE(WSAEADDRINUSE);

#endif

#ifdef WSAEADDRNOTAVAIL

ERRNO_CASE(WSAEADDRNOTAVAIL);

#endif

#ifdef WSAENETDOWN

ERRNO_CASE(WSAENETDOWN);

#endif

#ifdef WSAENETUNREACH

ERRNO_CASE(WSAENETUNREACH);

#endif

#ifdef WSAENETRESET

ERRNO_CASE(WSAENETRESET);

#endif

#ifdef WSAECONNABORTED

ERRNO_CASE(WSAECONNABORTED);

#endif

#ifdef WSAECONNRESET

ERRNO_CASE(WSAECONNRESET);

#endif

#ifdef WSAENOBUFS

ERRNO_CASE(WSAENOBUFS);

#endif

#ifdef WSAEISCONN

ERRNO_CASE(WSAEISCONN);

#endif

#ifdef WSAENOTCONN

ERRNO_CASE(WSAENOTCONN);

#endif

#ifdef WSAESHUTDOWN

ERRNO_CASE(WSAESHUTDOWN);

#endif

#ifdef WSAETOOMANYREFS

ERRNO_CASE(WSAETOOMANYREFS);

#endif

#ifdef WSAETIMEDOUT

ERRNO_CASE(WSAETIMEDOUT);

#endif

#ifdef WSAECONNREFUSED

ERRNO_CASE(WSAECONNREFUSED);

#endif

#ifdef WSAELOOP

ERRNO_CASE(WSAELOOP);

#endif

#ifdef WSAENAMETOOLONG

ERRNO_CASE(WSAENAMETOOLONG);

#endif

#ifdef WSAEHOSTDOWN

ERRNO_CASE(WSAEHOSTDOWN);

#endif

#ifdef WSAEHOSTUNREACH

ERRNO_CASE(WSAEHOSTUNREACH);

#endif

#ifdef WSAENOTEMPTY

ERRNO_CASE(WSAENOTEMPTY);

#endif

#ifdef WSAEPROCLIM

ERRNO_CASE(WSAEPROCLIM);

#endif

#ifdef WSAEUSERS

ERRNO_CASE(WSAEUSERS);

#endif

#ifdef WSAEDQUOT

ERRNO_CASE(WSAEDQUOT);

#endif

#ifdef WSAESTALE

ERRNO_CASE(WSAESTALE);

#endif

#ifdef WSAEREMOTE

ERRNO_CASE(WSAEREMOTE);

#endif

#ifdef WSASYSNOTREADY

ERRNO_CASE(WSASYSNOTREADY);

#endif

#ifdef WSAVERNOTSUPPORTED

ERRNO_CASE(WSAVERNOTSUPPORTED);

#endif

#ifdef WSANOTINITIALISED

ERRNO_CASE(WSANOTINITIALISED);

#endif

#ifdef WSAEDISCON

ERRNO_CASE(WSAEDISCON);

#endif

#ifdef WSAENOMORE

ERRNO_CASE(WSAENOMORE);

#endif

#ifdef WSAECANCELLED

ERRNO_CASE(WSAECANCELLED);

#endif

#ifdef WSAEINVALIDPROCTABLE

ERRNO_CASE(WSAEINVALIDPROCTABLE);

#endif

#ifdef WSAEINVALIDPROVIDER

ERRNO_CASE(WSAEINVALIDPROVIDER);

#endif

#ifdef WSAEPROVIDERFAILEDINIT

ERRNO_CASE(WSAEPROVIDERFAILEDINIT);

#endif

#ifdef WSASYSCALLFAILURE

ERRNO_CASE(WSASYSCALLFAILURE);

#endif

#ifdef WSASERVICE_NOT_FOUND

ERRNO_CASE(WSASERVICE_NOT_FOUND);

#endif

#ifdef WSATYPE_NOT_FOUND

ERRNO_CASE(WSATYPE_NOT_FOUND);

#endif

#ifdef WSA_E_NO_MORE

ERRNO_CASE(WSA_E_NO_MORE);

#endif

#ifdef WSA_E_CANCELLED

ERRNO_CASE(WSA_E_CANCELLED);

#endif

default: return "";

}

const char *signo_string(int signo) {

#define SIGNO_CASE(e) case e: return #e;

switch (signo) {

#ifdef SIGHUP

SIGNO_CASE(SIGHUP);

#endif

#ifdef SIGINT

SIGNO_CASE(SIGINT);

#endif

#ifdef SIGQUIT

SIGNO_CASE(SIGQUIT);

#endif

#ifdef SIGILL

SIGNO_CASE(SIGILL);

#endif

#ifdef SIGTRAP

SIGNO_CASE(SIGTRAP);

#endif

#ifdef SIGABRT

SIGNO_CASE(SIGABRT);

#endif

#ifdef SIGIOT

# if SIGABRT != SIGIOT

SIGNO_CASE(SIGIOT);

# endif

#endif

#ifdef SIGBUS

SIGNO_CASE(SIGBUS);

#endif

#ifdef SIGFPE

SIGNO_CASE(SIGFPE);

#endif

#ifdef SIGKILL

SIGNO_CASE(SIGKILL);

#endif

#ifdef SIGUSR1

SIGNO_CASE(SIGUSR1);

#endif

#ifdef SIGSEGV

SIGNO_CASE(SIGSEGV);

#endif

#ifdef SIGUSR2

SIGNO_CASE(SIGUSR2);

#endif

#ifdef SIGPIPE

SIGNO_CASE(SIGPIPE);

#endif

#ifdef SIGALRM

SIGNO_CASE(SIGALRM);

#endif

SIGNO_CASE(SIGTERM);

#ifdef SIGCHLD

SIGNO_CASE(SIGCHLD);

#endif

#ifdef SIGSTKFLT

SIGNO_CASE(SIGSTKFLT);

#endif

#ifdef SIGCONT

SIGNO_CASE(SIGCONT);

#endif

#ifdef SIGSTOP

SIGNO_CASE(SIGSTOP);

#endif

#ifdef SIGTSTP

SIGNO_CASE(SIGTSTP);

#endif

#ifdef SIGTTIN

SIGNO_CASE(SIGTTIN);

#endif

#ifdef SIGTTOU

SIGNO_CASE(SIGTTOU);

#endif

#ifdef SIGURG

SIGNO_CASE(SIGURG);

#endif

#ifdef SIGXCPU

SIGNO_CASE(SIGXCPU);

#endif

#ifdef SIGXFSZ

SIGNO_CASE(SIGXFSZ);

#endif

#ifdef SIGVTALRM

SIGNO_CASE(SIGVTALRM);

#endif

#ifdef SIGPROF

SIGNO_CASE(SIGPROF);

#endif

#ifdef SIGWINCH

SIGNO_CASE(SIGWINCH);

#endif

#ifdef SIGIO

SIGNO_CASE(SIGIO);

#endif

#ifdef SIGPOLL

# if SIGPOLL != SIGIO

SIGNO_CASE(SIGPOLL);

# endif

#endif

#ifdef SIGLOST

SIGNO_CASE(SIGLOST);

#endif

#ifdef SIGPWR

# if SIGPWR != SIGLOST

SIGNO_CASE(SIGPWR);

# endif

#endif

#ifdef SIGSYS

SIGNO_CASE(SIGSYS);

#endif

default: return "";

}

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