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node/src/node.cc

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// Copyright 2009 Ryan Dahl <ry@tinyclouds.org>
#include <node.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 <dlfcn.h> /* dlopen(), dlsym() */
#include <sys/types.h>
#include <unistd.h> /* setuid, getuid */
#include <pwd.h> /* getpwnam() */
#include <grp.h> /* getgrnam() */
#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_natives.h>
#include <node_version.h>
#ifdef HAVE_OPENSSL
#include <node_crypto.h>
#endif
#include <node_script.h>
#include <v8-debug.h>
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a)))
using namespace v8;
extern char **environ;
namespace node {
static Persistent<Object> process;
static Persistent<String> errno_symbol;
static Persistent<String> syscall_symbol;
static Persistent<String> errpath_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 int option_end_index = 0;
static bool use_debug_agent = false;
static bool debug_wait_connect = false;
static int debug_port=5858;
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 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
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);
SIGNO_CASE(SIGCHLD);
#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 "";
}
}
Local<Value> ErrnoException(int errorno,
const char *syscall,
const char *msg,
const char *path) {
Local<Value> e;
Local<String> estring = String::NewSymbol(errno_string(errorno));
if (!msg[0]) msg = strerror(errorno);
Local<String> message = String::NewSymbol(msg);
Local<String> cons1 = String::Concat(estring, String::NewSymbol(", "));
Local<String> cons2 = String::Concat(cons1, message);
if (errno_symbol.IsEmpty()) {
syscall_symbol = NODE_PSYMBOL("syscall");
errno_symbol = NODE_PSYMBOL("errno");
errpath_symbol = NODE_PSYMBOL("path");
}
if (path) {
Local<String> cons3 = String::Concat(cons2, String::NewSymbol(" '"));
Local<String> cons4 = String::Concat(cons3, String::New(path));
Local<String> cons5 = String::Concat(cons4, String::NewSymbol("'"));
e = Exception::Error(cons5);
} else {
e = Exception::Error(cons2);
}
Local<Object> obj = e->ToObject();
obj->Set(errno_symbol, Integer::New(errorno));
if (path) obj->Set(errpath_symbol, String::New(path));
if (syscall) obj->Set(syscall_symbol, String::NewSymbol(syscall));
return e;
}
enum encoding ParseEncoding(Handle<Value> encoding_v, enum encoding _default) {
HandleScope scope;
if (!encoding_v->IsString()) return _default;
String::Utf8Value encoding(encoding_v->ToString());
if (strcasecmp(*encoding, "utf8") == 0) {
return UTF8;
} else if (strcasecmp(*encoding, "utf-8") == 0) {
return UTF8;
} else if (strcasecmp(*encoding, "ascii") == 0) {
return ASCII;
} else if (strcasecmp(*encoding, "base64") == 0) {
return BASE64;
} else if (strcasecmp(*encoding, "binary") == 0) {
return BINARY;
} else if (strcasecmp(*encoding, "raw") == 0) {
fprintf(stderr, "'raw' (array of integers) has been removed. "
"Use 'binary'.\n");
return BINARY;
} else if (strcasecmp(*encoding, "raws") == 0) {
fprintf(stderr, "'raws' encoding has been renamed to 'binary'. "
"Please update your code.\n");
return BINARY;
} else {
return _default;
}
}
Local<Value> Encode(const void *buf, size_t len, enum encoding encoding) {
HandleScope scope;
if (!len) return scope.Close(String::Empty());
if (encoding == BINARY) {
const unsigned char *cbuf = static_cast<const unsigned char*>(buf);
uint16_t * twobytebuf = new uint16_t[len];
for (size_t i = 0; i < len; i++) {
// XXX is the following line platform independent?
twobytebuf[i] = cbuf[i];
}
Local<String> chunk = String::New(twobytebuf, len);
delete [] twobytebuf; // TODO use ExternalTwoByteString?
return scope.Close(chunk);
}
// utf8 or ascii encoding
Local<String> chunk = String::New((const char*)buf, len);
return scope.Close(chunk);
}
// Returns -1 if the handle was not valid for decoding
ssize_t DecodeBytes(v8::Handle<v8::Value> val, enum encoding encoding) {
HandleScope scope;
if (val->IsArray()) {
fprintf(stderr, "'raw' encoding (array of integers) has been removed. "
"Use 'binary'.\n");
assert(0);
return -1;
}
Local<String> str = val->ToString();
if (encoding == UTF8) return str->Utf8Length();
return str->Length();
}
#ifndef MIN
# define MIN(a, b) ((a) < (b) ? (a) : (b))
#endif
// Returns number of bytes written.
ssize_t DecodeWrite(char *buf,
size_t buflen,
v8::Handle<v8::Value> val,
enum encoding encoding) {
HandleScope scope;
// XXX
// A lot of improvement can be made here. See:
// http://code.google.com/p/v8/issues/detail?id=270
// http://groups.google.com/group/v8-dev/browse_thread/thread/dba28a81d9215291/ece2b50a3b4022c
// http://groups.google.com/group/v8-users/browse_thread/thread/1f83b0ba1f0a611
if (val->IsArray()) {
fprintf(stderr, "'raw' encoding (array of integers) has been removed. "
"Use 'binary'.\n");
assert(0);
return -1;
}
Local<String> str = val->ToString();
if (encoding == UTF8) {
str->WriteUtf8(buf, buflen, NULL, String::HINT_MANY_WRITES_EXPECTED);
return buflen;
}
if (encoding == ASCII) {
str->WriteAscii(buf, 0, buflen, String::HINT_MANY_WRITES_EXPECTED);
return buflen;
}
// THIS IS AWFUL!!! FIXME
assert(encoding == BINARY);
uint16_t * twobytebuf = new uint16_t[buflen];
str->Write(twobytebuf, 0, buflen, String::HINT_MANY_WRITES_EXPECTED);
for (size_t i = 0; i < buflen; i++) {
unsigned char *b = reinterpret_cast<unsigned char*>(&twobytebuf[i]);
assert(b[1] == 0);
buf[i] = b[0];
}
delete [] twobytebuf;
return buflen;
}
// Extracts a C str from a V8 Utf8Value.
const char* ToCString(const v8::String::Utf8Value& value) {
return *value ? *value : "<str conversion failed>";
}
static void ReportException(TryCatch &try_catch, bool show_line) {
Handle<Message> message = try_catch.Message();
node::Stdio::DisableRawMode(STDIN_FILENO);
fprintf(stderr, "\n");
if (show_line && !message.IsEmpty()) {
// Print (filename):(line number): (message).
String::Utf8Value filename(message->GetScriptResourceName());
const char* filename_string = ToCString(filename);
int linenum = message->GetLineNumber();
fprintf(stderr, "%s:%i\n", filename_string, linenum);
// Print line of source code.
String::Utf8Value sourceline(message->GetSourceLine());
const char* sourceline_string = ToCString(sourceline);
// HACK HACK HACK
//
// FIXME
//
// Because of how CommonJS modules work, all scripts are wrapped with a
// "function (function (exports, __filename, ...) {"
// to provide script local variables.
//
// When reporting errors on the first line of a script, this wrapper
// function is leaked to the user. This HACK is to remove it. The length
// of the wrapper is 62. That wrapper is defined in src/node.js
//
// If that wrapper is ever changed, then this number also has to be
// updated. Or - someone could clean this up so that the two peices
// don't need to be changed.
//
// Even better would be to get support into V8 for wrappers that
// shouldn't be reported to users.
int offset = linenum == 1 ? 62 : 0;
fprintf(stderr, "%s\n", sourceline_string + offset);
// Print wavy underline (GetUnderline is deprecated).
int start = message->GetStartColumn();
for (int i = offset; i < start; i++) {
fprintf(stderr, " ");
}
int end = message->GetEndColumn();
for (int i = start; i < end; i++) {
fprintf(stderr, "^");
}
fprintf(stderr, "\n");
}
String::Utf8Value trace(try_catch.StackTrace());
if (trace.length() > 0) {
fprintf(stderr, "%s\n", *trace);
}
fflush(stderr);
}
// Executes a str within the current v8 context.
Local<Value> ExecuteString(Local<String> source, Local<Value> filename) {
HandleScope scope;
TryCatch try_catch;
Local<v8::Script> script = v8::Script::Compile(source, filename);
if (script.IsEmpty()) {
ReportException(try_catch, true);
exit(1);
}
Local<Value> result = script->Run();
if (result.IsEmpty()) {
ReportException(try_catch, true);
exit(1);
}
return scope.Close(result);
}
static Handle<Value> ByteLength(const Arguments& args) {
HandleScope scope;
if (args.Length() < 1 || !args[0]->IsString()) {
return ThrowException(Exception::Error(String::New("Bad argument.")));
}
Local<Integer> length = Integer::New(DecodeBytes(args[0], ParseEncoding(args[1], UTF8)));
return scope.Close(length);
}
static Handle<Value> Loop(const Arguments& args) {
HandleScope scope;
assert(args.Length() == 0);
// TODO Probably don't need to start this each time.
// Avoids failing on test/simple/test-eio-race3.js though
ev_idle_start(EV_DEFAULT_UC_ &eio_poller);
ev_loop(EV_DEFAULT_UC_ 0);
return Undefined();
}
static Handle<Value> Unloop(const Arguments& args) {
fprintf(stderr, "Deprecation: Don't use process.unloop(). It will be removed soon.\n");
HandleScope scope;
int how = EVUNLOOP_ONE;
if (args[0]->IsString()) {
String::Utf8Value how_s(args[0]->ToString());
if (0 == strcmp(*how_s, "all")) {
how = EVUNLOOP_ALL;
}
}
ev_unloop(EV_DEFAULT_ how);
return Undefined();
}
static Handle<Value> Chdir(const Arguments& args) {
HandleScope scope;
if (args.Length() != 1 || !args[0]->IsString()) {
return ThrowException(Exception::Error(String::New("Bad argument.")));
}
String::Utf8Value path(args[0]->ToString());
int r = chdir(*path);
if (r != 0) {
return ThrowException(Exception::Error(String::New(strerror(errno))));
}
return Undefined();
}
static Handle<Value> Cwd(const Arguments& args) {
HandleScope scope;
assert(args.Length() == 0);
char *r = getcwd(getbuf, ARRAY_SIZE(getbuf) - 1);
if (r == NULL) {
return ThrowException(Exception::Error(String::New(strerror(errno))));
}
getbuf[ARRAY_SIZE(getbuf) - 1] = '\0';
Local<String> cwd = String::New(r);
return scope.Close(cwd);
}
static Handle<Value> Umask(const Arguments& args){
HandleScope scope;
unsigned int old;
if(args.Length() < 1) {
old = umask(0);
umask((mode_t)old);
}
else if(!args[0]->IsInt32()) {
return ThrowException(Exception::TypeError(
String::New("argument must be an integer.")));
}
else {
old = umask((mode_t)args[0]->Uint32Value());
}
return scope.Close(Uint32::New(old));
}
static Handle<Value> GetUid(const Arguments& args) {
HandleScope scope;
assert(args.Length() == 0);
int uid = getuid();
return scope.Close(Integer::New(uid));
}
static Handle<Value> GetGid(const Arguments& args) {
HandleScope scope;
assert(args.Length() == 0);
int gid = getgid();
return scope.Close(Integer::New(gid));
}
static Handle<Value> SetGid(const Arguments& args) {
HandleScope scope;
if (args.Length() < 1) {
return ThrowException(Exception::Error(
String::New("setgid requires 1 argument")));
}
int gid;
if (args[0]->IsNumber()) {
gid = args[0]->Int32Value();
} else if (args[0]->IsString()) {
String::Utf8Value grpnam(args[0]->ToString());
struct group grp, *grpp = NULL;
int err;
if ((err = getgrnam_r(*grpnam, &grp, getbuf, ARRAY_SIZE(getbuf), &grpp)) ||
grpp == NULL) {
return ThrowException(ErrnoException(errno, "getgrnam_r"));
}
gid = grpp->gr_gid;
} else {
return ThrowException(Exception::Error(
String::New("setgid argument must be a number or a string")));
}
int result;
if ((result = setgid(gid)) != 0) {
return ThrowException(ErrnoException(errno, "setgid"));
}
return Undefined();
}
static Handle<Value> SetUid(const Arguments& args) {
HandleScope scope;
if (args.Length() < 1) {
return ThrowException(Exception::Error(
String::New("setuid requires 1 argument")));
}
int uid;
if (args[0]->IsNumber()) {
uid = args[0]->Int32Value();
} else if (args[0]->IsString()) {
String::Utf8Value pwnam(args[0]->ToString());
struct passwd pwd, *pwdp = NULL;
int err;
if ((err = getpwnam_r(*pwnam, &pwd, getbuf, ARRAY_SIZE(getbuf), &pwdp)) ||
pwdp == NULL) {
return ThrowException(ErrnoException(errno, "getpwnam_r"));
}
uid = pwdp->pw_uid;
} else {
return ThrowException(Exception::Error(
String::New("setuid argument must be a number or a string")));
}
int result;
if ((result = setuid(uid)) != 0) {
return ThrowException(ErrnoException(errno, "setuid"));
}
return Undefined();
}
v8::Handle<v8::Value> Exit(const v8::Arguments& args) {
HandleScope scope;
exit(args[0]->IntegerValue());
return Undefined();
}
static void CheckStatus(EV_P_ ev_timer *watcher, int revents) {
assert(watcher == &gc_timer);
assert(revents == EV_TIMEOUT);
// check memory
size_t rss, vsize;
if (!ev_is_active(&gc_idle) && OS::GetMemory(&rss, &vsize) == 0) {
if (rss > 1024*1024*128) {
// larger than 128 megs, just start the idle watcher
ev_idle_start(EV_A_ &gc_idle);
return;
}
}
double d = ev_now(EV_DEFAULT_UC) - TICK_TIME(3);
//printfb("timer d = %f\n", d);
if (d >= GC_WAIT_TIME - 1.) {
//fprintf(stderr, "start idle\n");
ev_idle_start(EV_A_ &gc_idle);
}
}
v8::Handle<v8::Value> MemoryUsage(const v8::Arguments& args) {
HandleScope scope;
assert(args.Length() == 0);
size_t rss, vsize;
int r = OS::GetMemory(&rss, &vsize);
if (r != 0) {
return ThrowException(Exception::Error(String::New(strerror(errno))));
}
Local<Object> info = Object::New();
if (rss_symbol.IsEmpty()) {
rss_symbol = NODE_PSYMBOL("rss");
vsize_symbol = NODE_PSYMBOL("vsize");
heap_total_symbol = NODE_PSYMBOL("heapTotal");
heap_used_symbol = NODE_PSYMBOL("heapUsed");
}
info->Set(rss_symbol, Integer::NewFromUnsigned(rss));
info->Set(vsize_symbol, Integer::NewFromUnsigned(vsize));
// V8 memory usage
HeapStatistics v8_heap_stats;
V8::GetHeapStatistics(&v8_heap_stats);
info->Set(heap_total_symbol,
Integer::NewFromUnsigned(v8_heap_stats.total_heap_size()));
info->Set(heap_used_symbol,
Integer::NewFromUnsigned(v8_heap_stats.used_heap_size()));
return scope.Close(info);
}
v8::Handle<v8::Value> Kill(const v8::Arguments& args) {
HandleScope scope;
if (args.Length() < 1 || !args[0]->IsNumber()) {
return ThrowException(Exception::Error(String::New("Bad argument.")));
}
pid_t pid = args[0]->IntegerValue();
int sig = SIGTERM;
if (args.Length() >= 2) {
if (args[1]->IsNumber()) {
sig = args[1]->Int32Value();
} else if (args[1]->IsString()) {
Local<String> signame = args[1]->ToString();
Local<Value> sig_v = process->Get(signame);
if (!sig_v->IsNumber()) {
return ThrowException(Exception::Error(String::New("Unknown signal")));
}
sig = sig_v->Int32Value();
}
}
int r = kill(pid, sig);
if (r != 0) {
return ThrowException(Exception::Error(String::New(strerror(errno))));
}
return Undefined();
}
typedef void (*extInit)(Handle<Object> exports);
// DLOpen is node.dlopen(). Used to load 'module.node' dynamically shared
// objects.
Handle<Value> DLOpen(const v8::Arguments& args) {
HandleScope scope;
if (args.Length() < 2) return Undefined();
String::Utf8Value filename(args[0]->ToString()); // Cast
Local<Object> target = args[1]->ToObject(); // Cast
// Actually call dlopen().
// FIXME: This is a blocking function and should be called asynchronously!
// This function should be moved to file.cc and use libeio to make this
// system call.
void *handle = dlopen(*filename, RTLD_LAZY);
// Handle errors.
if (handle == NULL) {
Local<Value> exception = Exception::Error(String::New(dlerror()));
return ThrowException(exception);
}
String::Utf8Value symbol(args[0]->ToString());
char *symstr = NULL;
{
char *sym = *symbol;
char *p = strrchr(sym, '/');
if (p != NULL) {
sym = p+1;
}
p = strrchr(sym, '.');
if (p != NULL) {
*p = '\0';
}
size_t slen = strlen(sym);
symstr = static_cast<char*>(calloc(1, slen + sizeof("_module") + 1));
memcpy(symstr, sym, slen);
memcpy(symstr+slen, "_module", sizeof("_module") + 1);
}
// Get the init() function from the dynamically shared object.
node_module_struct *mod = static_cast<node_module_struct *>(dlsym(handle, symstr));
free(symstr);
// Error out if not found.
if (mod == NULL) {
/* Start Compatibility hack: Remove once everyone is using NODE_MODULE macro */
node_module_struct compat_mod;
mod = &compat_mod;
mod->version = NODE_MODULE_VERSION;
void *init_handle = dlsym(handle, "init");
if (init_handle == NULL) {
dlclose(handle);
Local<Value> exception =
Exception::Error(String::New("No module symbol found in module."));
return ThrowException(exception);
}
mod->register_func = (extInit)(init_handle);
/* End Compatibility hack */
}
if (mod->version != NODE_MODULE_VERSION) {
Local<Value> exception =
Exception::Error(String::New("Module version mismatch, refusing to load."));
return ThrowException(exception);
}
// Execute the C++ module
mod->register_func(target);
// Tell coverity that 'handle' should not be freed when we return.
// coverity[leaked_storage]
return Undefined();
}
Handle<Value> Compile(const Arguments& args) {
HandleScope scope;
if (args.Length() < 2) {
return ThrowException(Exception::TypeError(
String::New("needs two arguments.")));
}
Local<String> source = args[0]->ToString();
Local<String> filename = args[1]->ToString();
TryCatch try_catch;
Local<v8::Script> script = v8::Script::Compile(source, filename);
if (try_catch.HasCaught()) {
// Hack because I can't get a proper stacktrace on SyntaxError
ReportException(try_catch, true);
exit(1);
}
Local<Value> result = script->Run();
if (try_catch.HasCaught()) {
ReportException(try_catch, false);
exit(1);
}
return scope.Close(result);
}
static void OnFatalError(const char* location, const char* message) {
if (location) {
fprintf(stderr, "FATAL ERROR: %s %s\n", location, message);
} else {
fprintf(stderr, "FATAL ERROR: %s\n", message);
}
exit(1);
}
static int uncaught_exception_counter = 0;
void FatalException(TryCatch &try_catch) {
HandleScope scope;
// Check if uncaught_exception_counter indicates a recursion
if (uncaught_exception_counter > 0) {
ReportException(try_catch, true);
exit(1);
}
if (listeners_symbol.IsEmpty()) {
listeners_symbol = NODE_PSYMBOL("listeners");
uncaught_exception_symbol = NODE_PSYMBOL("uncaughtException");
emit_symbol = NODE_PSYMBOL("emit");
}
Local<Value> listeners_v = process->Get(listeners_symbol);
assert(listeners_v->IsFunction());
Local<Function> listeners = Local<Function>::Cast(listeners_v);
Local<String> uncaught_exception_symbol_l = Local<String>::New(uncaught_exception_symbol);
Local<Value> argv[1] = { uncaught_exception_symbol_l };
Local<Value> ret = listeners->Call(process, 1, argv);
assert(ret->IsArray());
Local<Array> listener_array = Local<Array>::Cast(ret);
uint32_t length = listener_array->Length();
// Report and exit if process has no "uncaughtException" listener
if (length == 0) {
ReportException(try_catch, true);
exit(1);
}
// Otherwise fire the process "uncaughtException" event
Local<Value> emit_v = process->Get(emit_symbol);
assert(emit_v->IsFunction());
Local<Function> emit = Local<Function>::Cast(emit_v);
Local<Value> error = try_catch.Exception();
Local<Value> event_argv[2] = { uncaught_exception_symbol_l, error };
uncaught_exception_counter++;
emit->Call(process, 2, event_argv);
// Decrement so we know if the next exception is a recursion or not
uncaught_exception_counter--;
}
static ev_async debug_watcher;
static void DebugMessageCallback(EV_P_ ev_async *watcher, int revents) {
HandleScope scope;
assert(watcher == &debug_watcher);
assert(revents == EV_ASYNC);
Debug::ProcessDebugMessages();
}
static void DebugMessageDispatch(void) {
// This function is called from V8's debug thread when a debug TCP client
// has sent a message.
// Send a signal to our main thread saying that it should enter V8 to
// handle the message.
ev_async_send(EV_DEFAULT_UC_ &debug_watcher);
}
static void DebugBreakMessageHandler(const Debug::Message& message) {
// do nothing with debug messages.
// The message handler will get changed by DebuggerAgent::CreateSession in
// debug-agent.cc of v8/src when a new session is created
}
Persistent<Object> binding_cache;
static Handle<Value> Binding(const Arguments& args) {
HandleScope scope;
Local<String> module = args[0]->ToString();
String::Utf8Value module_v(module);
node_module_struct* modp;
if (binding_cache.IsEmpty()) {
binding_cache = Persistent<Object>::New(Object::New());
}
Local<Object> exports;
if (binding_cache->Has(module)) {
exports = binding_cache->Get(module)->ToObject();
}
else if ((modp = get_builtin_module(*module_v)) != NULL) {
exports = Object::New();
modp->register_func(exports);
binding_cache->Set(module, exports);
} else if (!strcmp(*module_v, "natives")) {
exports = Object::New();
// Explicitly define native sources.
// TODO DRY/automate this?
exports->Set(String::New("assert"), String::New(native_assert));
exports->Set(String::New("buffer"), String::New(native_buffer));
exports->Set(String::New("child_process"),String::New(native_child_process));
exports->Set(String::New("dgram"), String::New(native_dgram));
exports->Set(String::New("dns"), String::New(native_dns));
exports->Set(String::New("events"), String::New(native_events));
exports->Set(String::New("file"), String::New(native_file));
exports->Set(String::New("freelist"), String::New(native_freelist));
exports->Set(String::New("fs"), String::New(native_fs));
exports->Set(String::New("http"), String::New(native_http));
exports->Set(String::New("crypto"), String::New(native_crypto));
exports->Set(String::New("net"), String::New(native_net));
exports->Set(String::New("posix"), String::New(native_posix));
exports->Set(String::New("querystring"), String::New(native_querystring));
exports->Set(String::New("repl"), String::New(native_repl));
exports->Set(String::New("readline"), String::New(native_readline));
exports->Set(String::New("sys"), String::New(native_sys));
exports->Set(String::New("tcp"), String::New(native_tcp));
exports->Set(String::New("url"), String::New(native_url));
exports->Set(String::New("utils"), String::New(native_utils));
exports->Set(String::New("path"), String::New(native_path));
exports->Set(String::New("string_decoder"), String::New(native_string_decoder));
binding_cache->Set(module, exports);
} else {
return ThrowException(Exception::Error(String::New("No such module")));
}
return scope.Close(exports);
}
static Handle<Value> ProcessTitleGetter(Local<String> property,
const AccessorInfo& info) {
HandleScope scope;
int len;
const char *s = OS::GetProcessTitle(&len);
return scope.Close(s ? String::New(s, len) : String::Empty());
}
static void ProcessTitleSetter(Local<String> property,
Local<Value> value,
const AccessorInfo& info) {
HandleScope scope;
String::Utf8Value title(value->ToString());
OS::SetProcessTitle(*title);
}
static void Load(int argc, char *argv[]) {
HandleScope scope;
Local<FunctionTemplate> process_template = FunctionTemplate::New();
node::EventEmitter::Initialize(process_template);
process = Persistent<Object>::New(process_template->GetFunction()->NewInstance());
process->SetAccessor(String::New("title"),
ProcessTitleGetter,
ProcessTitleSetter);
// Add a reference to the global object
Local<Object> global = v8::Context::GetCurrent()->Global();
process->Set(String::NewSymbol("global"), global);
// process.version
process->Set(String::NewSymbol("version"), String::New(NODE_VERSION));
// process.installPrefix
process->Set(String::NewSymbol("installPrefix"), String::New(NODE_PREFIX));
Local<Object> versions = Object::New();
char buf[20];
process->Set(String::NewSymbol("versions"), versions);
// +1 to get rid of the leading 'v'
versions->Set(String::NewSymbol("node"), String::New(NODE_VERSION+1));
versions->Set(String::NewSymbol("v8"), String::New(V8::GetVersion()));
versions->Set(String::NewSymbol("ares"), String::New(ARES_VERSION_STR));
snprintf(buf, 20, "%d.%d", ev_version_major(), ev_version_minor());
versions->Set(String::NewSymbol("ev"), String::New(buf));
// process.platform
process->Set(String::NewSymbol("platform"), String::New(PLATFORM));
// process.argv
int i, j;
Local<Array> arguments = Array::New(argc - option_end_index + 1);
arguments->Set(Integer::New(0), String::New(argv[0]));
for (j = 1, i = option_end_index; i < argc; j++, i++) {
Local<String> arg = String::New(argv[i]);
arguments->Set(Integer::New(j), arg);
}
// assign it
process->Set(String::NewSymbol("ARGV"), arguments);
process->Set(String::NewSymbol("argv"), arguments);
// create process.env
Local<Object> env = Object::New();
for (i = 0; environ[i]; i++) {
// skip entries without a '=' character
for (j = 0; environ[i][j] && environ[i][j] != '='; j++) { ; }
// create the v8 objects
Local<String> field = String::New(environ[i], j);
Local<String> value = Local<String>();
if (environ[i][j] == '=') {
value = String::New(environ[i]+j+1);
}
// assign them
env->Set(field, value);
}
// assign process.ENV
process->Set(String::NewSymbol("ENV"), env);
process->Set(String::NewSymbol("env"), env);
process->Set(String::NewSymbol("pid"), Integer::New(getpid()));
size_t size = 2*PATH_MAX;
char execPath[size];
if (OS::GetExecutablePath(execPath, &size) != 0) {
// as a last ditch effort, fallback on argv[0] ?
process->Set(String::NewSymbol("execPath"), String::New(argv[0]));
} else {
process->Set(String::NewSymbol("execPath"), String::New(execPath));
}
// define various internal methods
NODE_SET_METHOD(process, "loop", Loop);
NODE_SET_METHOD(process, "unloop", Unloop);
NODE_SET_METHOD(process, "compile", Compile);
NODE_SET_METHOD(process, "_byteLength", ByteLength);
NODE_SET_METHOD(process, "_needTickCallback", NeedTickCallback);
NODE_SET_METHOD(process, "reallyExit", Exit);
NODE_SET_METHOD(process, "chdir", Chdir);
NODE_SET_METHOD(process, "cwd", Cwd);
NODE_SET_METHOD(process, "getuid", GetUid);
NODE_SET_METHOD(process, "setuid", SetUid);
NODE_SET_METHOD(process, "setgid", SetGid);
NODE_SET_METHOD(process, "getgid", GetGid);
NODE_SET_METHOD(process, "umask", Umask);
NODE_SET_METHOD(process, "dlopen", DLOpen);
NODE_SET_METHOD(process, "kill", Kill);
NODE_SET_METHOD(process, "memoryUsage", MemoryUsage);
NODE_SET_METHOD(process, "binding", Binding);
// Assign the EventEmitter. It was created in main().
process->Set(String::NewSymbol("EventEmitter"),
EventEmitter::constructor_template->GetFunction());
// Initialize the C++ modules..................filename of module
IOWatcher::Initialize(process); // io_watcher.cc
// Not in use at the moment.
//IdleWatcher::Initialize(process); // idle_watcher.cc
Timer::Initialize(process); // timer.cc
// coverity[stack_use_callee]
DefineConstants(process); // constants.cc
// Compile, execute the src/node.js file. (Which was included as static C
// string in node_natives.h. 'natve_node' is the string containing that
// source code.)
// The node.js file returns a function 'f'
TryCatch try_catch;
Local<Value> f_value = ExecuteString(String::New(native_node),
String::New("node.js"));
if (try_catch.HasCaught()) {
ReportException(try_catch, true);
exit(10);
}
assert(f_value->IsFunction());
Local<Function> f = Local<Function>::Cast(f_value);
// Now we call 'f' with the 'process' variable that we've built up with
// all our bindings. Inside node.js we'll take care of assigning things to
// their places.
// We start the process this way in order to be more modular. Developers
// who do not like how 'src/node.js' setups the module system but do like
// Node's I/O bindings may want to replace 'f' with their own function.
Local<Value> args[1] = { Local<Value>::New(process) };
f->Call(global, 1, args);
if (try_catch.HasCaught()) {
ReportException(try_catch, true);
exit(11);
}
}
static void PrintHelp();
static void ParseDebugOpt(const char* arg) {
const char *p = 0;
use_debug_agent = true;
if (!strcmp (arg, "--debug-brk")) {
debug_wait_connect = true;
return;
} else if (!strcmp(arg, "--debug")) {
return;
} else if (strstr(arg, "--debug-brk=") == arg) {
debug_wait_connect = true;
p = 1 + strchr(arg, '=');
debug_port = atoi(p);
} else if (strstr(arg, "--debug=") == arg) {
p = 1 + strchr(arg, '=');
debug_port = atoi(p);
}
if (p && debug_port > 1024 && debug_port < 65536)
return;
fprintf(stderr, "Bad debug option.\n");
if (p) fprintf(stderr, "Debug port must be in range 1025 to 65535.\n");
PrintHelp();
exit(1);
}
static void PrintHelp() {
printf("Usage: node [options] script.js [arguments] \n"
"Options:\n"
" -v, --version print node's version\n"
" --debug[=port] enable remote debugging via given TCP port\n"
" without stopping the execution\n"
" --debug-brk[=port] as above, but break in script.js and\n"
" wait for remote debugger to connect\n"
" --v8-options print v8 command line options\n"
" --vars print various compiled-in variables\n"
"\n"
"Enviromental variables:\n"
"NODE_PATH ':'-separated list of directories\n"
" prefixed to the module search path,\n"
" require.paths.\n"
"NODE_DEBUG Print additional debugging output.\n"
"NODE_MODULE_CONTEXTS Set to 1 to load modules in their own\n"
" global contexts.\n"
"\n"
"Documentation can be found at http://nodejs.org/api.html"
" or with 'man node'\n");
}
// Parse node command line arguments.
static void ParseArgs(int *argc, char **argv) {
int i;
// TODO use parse opts
for (i = 1; i < *argc; i++) {
const char *arg = argv[i];
if (strstr(arg, "--debug") == arg) {
ParseDebugOpt(arg);
argv[i] = const_cast<char*>("");
} else if (strcmp(arg, "--version") == 0 || strcmp(arg, "-v") == 0) {
printf("%s\n", NODE_VERSION);
exit(0);
} else if (strcmp(arg, "--vars") == 0) {
printf("NODE_PREFIX: %s\n", NODE_PREFIX);
printf("NODE_CFLAGS: %s\n", NODE_CFLAGS);
exit(0);
} else if (strcmp(arg, "--help") == 0 || strcmp(arg, "-h") == 0) {
PrintHelp();
exit(0);
} else if (strcmp(arg, "--v8-options") == 0) {
argv[i] = const_cast<char*>("--help");
} else if (argv[i][0] != '-') {
break;
}
}
option_end_index = i;
}
static void AtExit() {
node::Stdio::Flush();
node::Stdio::DisableRawMode(STDIN_FILENO);
}
} // namespace node
int main(int argc, char *argv[]) {
// Hack aroung with the argv pointer. Used for process.title = "blah".
argv = node::OS::SetupArgs(argc, argv);
// Parse a few arguments which are specific to Node.
node::ParseArgs(&argc, argv);
// Parse the rest of the args (up to the 'option_end_index' (where '--' was
// in the command line))
int v8argc = node::option_end_index;
char **v8argv = argv;
if (node::debug_wait_connect) {
// v8argv is a copy of argv up to the script file argument +2 if --debug-brk
// to expose the v8 debugger js object so that node.js can set
// a breakpoint on the first line of the startup script
v8argc += 2;
v8argv = new char*[v8argc];
memcpy(v8argv, argv, sizeof(argv) * node::option_end_index);
v8argv[node::option_end_index] = const_cast<char*>("--expose_debug_as");
v8argv[node::option_end_index + 1] = const_cast<char*>("v8debug");
}
V8::SetFlagsFromCommandLine(&v8argc, v8argv, false);
// Ignore SIGPIPE
struct sigaction sa;
bzero(&sa, sizeof(sa));
sa.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &sa, NULL);
// Initialize the default ev loop.
#if defined(__sun)
// TODO(Ryan) I'm experiencing abnormally high load using Solaris's
// EVBACKEND_PORT. Temporarally forcing select() until I debug.
ev_default_loop(EVBACKEND_POLL);
#elif defined(__APPLE_CC__) && __APPLE_CC__ >= 5659
ev_default_loop(EVBACKEND_KQUEUE);
#else
ev_default_loop(EVFLAG_AUTO);
#endif
ev_prepare_init(&node::prepare_tick_watcher, node::PrepareTick);
ev_prepare_start(EV_DEFAULT_UC_ &node::prepare_tick_watcher);
ev_unref(EV_DEFAULT_UC);
ev_check_init(&node::check_tick_watcher, node::CheckTick);
ev_check_start(EV_DEFAULT_UC_ &node::check_tick_watcher);
ev_unref(EV_DEFAULT_UC);
ev_idle_init(&node::tick_spinner, node::Spin);
ev_check_init(&node::gc_check, node::Check);
ev_check_start(EV_DEFAULT_UC_ &node::gc_check);
ev_unref(EV_DEFAULT_UC);
ev_idle_init(&node::gc_idle, node::Idle);
ev_timer_init(&node::gc_timer, node::CheckStatus, 5., 5.);
// Setup the EIO thread pool
{ // It requires 3, yes 3, watchers.
ev_idle_init(&node::eio_poller, node::DoPoll);
ev_async_init(&node::eio_want_poll_notifier, node::WantPollNotifier);
ev_async_start(EV_DEFAULT_UC_ &node::eio_want_poll_notifier);
ev_unref(EV_DEFAULT_UC);
ev_async_init(&node::eio_done_poll_notifier, node::DonePollNotifier);
ev_async_start(EV_DEFAULT_UC_ &node::eio_done_poll_notifier);
ev_unref(EV_DEFAULT_UC);
eio_init(node::EIOWantPoll, node::EIODonePoll);
// Don't handle more than 10 reqs on each eio_poll(). This is to avoid
// race conditions. See test/simple/test-eio-race.js
eio_set_max_poll_reqs(10);
}
V8::Initialize();
HandleScope handle_scope;
V8::SetFatalErrorHandler(node::OnFatalError);
// If the --debug flag was specified then initialize the debug thread.
if (node::use_debug_agent) {
// Initialize the async watcher for receiving messages from the debug
// thread and marshal it into the main thread. DebugMessageCallback()
// is called from the main thread to execute a random bit of javascript
// - which will give V8 control so it can handle whatever new message
// had been received on the debug thread.
ev_async_init(&node::debug_watcher, node::DebugMessageCallback);
ev_set_priority(&node::debug_watcher, EV_MAXPRI);
// Set the callback DebugMessageDispatch which is called from the debug
// thread.
Debug::SetDebugMessageDispatchHandler(node::DebugMessageDispatch);
// Start the async watcher.
ev_async_start(EV_DEFAULT_UC_ &node::debug_watcher);
// unref it so that we exit the event loop despite it being active.
ev_unref(EV_DEFAULT_UC);
// Start the debug thread and it's associated TCP server on port 5858.
bool r = Debug::EnableAgent("node " NODE_VERSION, node::debug_port);
if (node::debug_wait_connect) {
// Set up an empty handler so v8 will not continue until a debugger
// attaches. This is the same behavior as Debug::EnableAgent(_,_,true)
// except we don't break at the beginning of the script.
// see Debugger::StartAgent in debug.cc of v8/src
Debug::SetMessageHandler2(node::DebugBreakMessageHandler);
}
// Crappy check that everything went well. FIXME
assert(r);
// Print out some information.
printf("debugger listening on port %d\n", node::debug_port);
}
// Create the one and only Context.
Persistent<v8::Context> context = v8::Context::New();
v8::Context::Scope context_scope(context);
atexit(node::AtExit);
// Create all the objects, load modules, do everything.
// so your next reading stop should be node::Load()!
node::Load(argc, argv);
#ifndef NDEBUG
// Clean up.
context.Dispose();
V8::Dispose();
#endif // NDEBUG
return 0;
}