1 // Copyright 2009 Ryan Dahl <ry@tinyclouds.org>
7 #include <limits.h> /* PATH_MAX */
11 #include <dlfcn.h> /* dlopen(), dlsym() */
12 #include <sys/types.h>
13 #include <unistd.h> /* setuid, getuid */
15 #include <node_events.h>
18 #include <node_file.h>
19 #include <node_idle_watcher.h>
20 #include <node_http.h>
21 #include <node_signal_handler.h>
22 #include <node_stat.h>
23 #include <node_timer.h>
24 #include <node_child_process.h>
25 #include <node_constants.h>
26 #include <node_stdio.h>
27 #include <node_natives.h>
28 #include <node_version.h>
34 extern char **environ;
38 static Persistent<Object> process;
40 static Persistent<String> dev_symbol;
41 static Persistent<String> ino_symbol;
42 static Persistent<String> mode_symbol;
43 static Persistent<String> nlink_symbol;
44 static Persistent<String> uid_symbol;
45 static Persistent<String> gid_symbol;
46 static Persistent<String> rdev_symbol;
47 static Persistent<String> size_symbol;
48 static Persistent<String> blksize_symbol;
49 static Persistent<String> blocks_symbol;
50 static Persistent<String> atime_symbol;
51 static Persistent<String> mtime_symbol;
52 static Persistent<String> ctime_symbol;
54 static Persistent<String> rss_symbol;
55 static Persistent<String> vsize_symbol;
56 static Persistent<String> heap_total_symbol;
57 static Persistent<String> heap_used_symbol;
59 static Persistent<String> listeners_symbol;
60 static Persistent<String> uncaught_exception_symbol;
61 static Persistent<String> emit_symbol;
63 static int option_end_index = 0;
64 static bool use_debug_agent = false;
65 static bool debug_wait_connect = false;
66 static int debug_port=5858;
69 static ev_async eio_want_poll_notifier;
70 static ev_async eio_done_poll_notifier;
71 static ev_idle eio_poller;
73 static ev_timer gc_timer;
74 #define GC_INTERVAL 2.0
77 // Node calls this every GC_INTERVAL seconds in order to try and call the
78 // GC. This watcher is run with maximum priority, so ev_pending_count() == 0
79 // is an effective measure of idleness.
80 static void GCTimeout(EV_P_ ev_timer *watcher, int revents) {
81 assert(watcher == &gc_timer);
82 assert(revents == EV_TIMER);
83 if (ev_pending_count(EV_DEFAULT_UC) == 0) V8::IdleNotification();
87 static void DoPoll(EV_P_ ev_idle *watcher, int revents) {
88 assert(watcher == &eio_poller);
89 assert(revents == EV_IDLE);
91 //printf("eio_poller\n");
93 if (eio_poll() != -1) {
94 //printf("eio_poller stop\n");
95 ev_idle_stop(EV_DEFAULT_UC_ watcher);
100 // Called from the main thread.
101 static void WantPollNotifier(EV_P_ ev_async *watcher, int revents) {
102 assert(watcher == &eio_want_poll_notifier);
103 assert(revents == EV_ASYNC);
105 //printf("want poll notifier\n");
107 if (eio_poll() == -1) {
108 //printf("eio_poller start\n");
109 ev_idle_start(EV_DEFAULT_UC_ &eio_poller);
114 static void DonePollNotifier(EV_P_ ev_async *watcher, int revents) {
115 assert(watcher == &eio_done_poll_notifier);
116 assert(revents == EV_ASYNC);
118 //printf("done poll notifier\n");
120 if (eio_poll() != -1) {
121 //printf("eio_poller stop\n");
122 ev_idle_stop(EV_DEFAULT_UC_ &eio_poller);
127 // EIOWantPoll() is called from the EIO thread pool each time an EIO
128 // request (that is, one of the node.fs.* functions) has completed.
129 static void EIOWantPoll(void) {
130 // Signal the main thread that eio_poll need to be processed.
131 ev_async_send(EV_DEFAULT_UC_ &eio_want_poll_notifier);
135 static void EIODonePoll(void) {
136 // Signal the main thread that we should stop calling eio_poll().
137 // from the idle watcher.
138 ev_async_send(EV_DEFAULT_UC_ &eio_done_poll_notifier);
142 enum encoding ParseEncoding(Handle<Value> encoding_v, enum encoding _default) {
145 if (!encoding_v->IsString()) return _default;
147 String::Utf8Value encoding(encoding_v->ToString());
149 if (strcasecmp(*encoding, "utf8") == 0) {
151 } else if (strcasecmp(*encoding, "utf-8") == 0) {
153 } else if (strcasecmp(*encoding, "ascii") == 0) {
155 } else if (strcasecmp(*encoding, "binary") == 0) {
157 } else if (strcasecmp(*encoding, "raw") == 0) {
158 fprintf(stderr, "'raw' (array of integers) has been removed. "
161 } else if (strcasecmp(*encoding, "raws") == 0) {
162 fprintf(stderr, "'raws' encoding has been renamed to 'binary'. "
163 "Please update your code.\n");
170 Local<Value> Encode(const void *buf, size_t len, enum encoding encoding) {
173 if (!len) return scope.Close(String::Empty());
175 if (encoding == BINARY) {
176 const unsigned char *cbuf = static_cast<const unsigned char*>(buf);
177 uint16_t * twobytebuf = new uint16_t[len];
178 for (size_t i = 0; i < len; i++) {
179 // XXX is the following line platform independent?
180 twobytebuf[i] = cbuf[i];
182 Local<String> chunk = String::New(twobytebuf, len);
183 delete [] twobytebuf; // TODO use ExternalTwoByteString?
184 return scope.Close(chunk);
187 // utf8 or ascii encoding
188 Local<String> chunk = String::New((const char*)buf, len);
189 return scope.Close(chunk);
192 // Returns -1 if the handle was not valid for decoding
193 ssize_t DecodeBytes(v8::Handle<v8::Value> val, enum encoding encoding) {
196 if (val->IsArray()) {
197 fprintf(stderr, "'raw' encoding (array of integers) has been removed. "
203 Local<String> str = val->ToString();
205 if (encoding == UTF8) return str->Utf8Length();
207 return str->Length();
211 # define MIN(a, b) ((a) < (b) ? (a) : (b))
214 // Returns number of bytes written.
215 ssize_t DecodeWrite(char *buf, size_t buflen,
216 v8::Handle<v8::Value> val,
217 enum encoding encoding) {
221 // A lot of improvement can be made here. See:
222 // http://code.google.com/p/v8/issues/detail?id=270
223 // http://groups.google.com/group/v8-dev/browse_thread/thread/dba28a81d9215291/ece2b50a3b4022c
224 // http://groups.google.com/group/v8-users/browse_thread/thread/1f83b0ba1f0a611
226 if (val->IsArray()) {
227 fprintf(stderr, "'raw' encoding (array of integers) has been removed. "
233 Local<String> str = val->ToString();
235 if (encoding == UTF8) {
236 str->WriteUtf8(buf, buflen);
240 if (encoding == ASCII) {
241 str->WriteAscii(buf, 0, buflen);
245 // THIS IS AWFUL!!! FIXME
247 assert(encoding == BINARY);
249 uint16_t * twobytebuf = new uint16_t[buflen];
251 str->Write(twobytebuf, 0, buflen);
253 for (size_t i = 0; i < buflen; i++) {
254 unsigned char *b = reinterpret_cast<unsigned char*>(&twobytebuf[i]);
259 delete [] twobytebuf;
264 static Persistent<FunctionTemplate> stats_constructor_template;
266 Local<Object> BuildStatsObject(struct stat * s) {
269 if (dev_symbol.IsEmpty()) {
270 dev_symbol = NODE_PSYMBOL("dev");
271 ino_symbol = NODE_PSYMBOL("ino");
272 mode_symbol = NODE_PSYMBOL("mode");
273 nlink_symbol = NODE_PSYMBOL("nlink");
274 uid_symbol = NODE_PSYMBOL("uid");
275 gid_symbol = NODE_PSYMBOL("gid");
276 rdev_symbol = NODE_PSYMBOL("rdev");
277 size_symbol = NODE_PSYMBOL("size");
278 blksize_symbol = NODE_PSYMBOL("blksize");
279 blocks_symbol = NODE_PSYMBOL("blocks");
280 atime_symbol = NODE_PSYMBOL("atime");
281 mtime_symbol = NODE_PSYMBOL("mtime");
282 ctime_symbol = NODE_PSYMBOL("ctime");
285 Local<Object> stats =
286 stats_constructor_template->GetFunction()->NewInstance();
288 /* ID of device containing file */
289 stats->Set(dev_symbol, Integer::New(s->st_dev));
292 stats->Set(ino_symbol, Integer::New(s->st_ino));
295 stats->Set(mode_symbol, Integer::New(s->st_mode));
297 /* number of hard links */
298 stats->Set(nlink_symbol, Integer::New(s->st_nlink));
300 /* user ID of owner */
301 stats->Set(uid_symbol, Integer::New(s->st_uid));
303 /* group ID of owner */
304 stats->Set(gid_symbol, Integer::New(s->st_gid));
306 /* device ID (if special file) */
307 stats->Set(rdev_symbol, Integer::New(s->st_rdev));
309 /* total size, in bytes */
310 stats->Set(size_symbol, Integer::New(s->st_size));
312 /* blocksize for filesystem I/O */
313 stats->Set(blksize_symbol, Integer::New(s->st_blksize));
315 /* number of blocks allocated */
316 stats->Set(blocks_symbol, Integer::New(s->st_blocks));
318 /* time of last access */
319 stats->Set(atime_symbol, NODE_UNIXTIME_V8(s->st_atime));
321 /* time of last modification */
322 stats->Set(mtime_symbol, NODE_UNIXTIME_V8(s->st_mtime));
324 /* time of last status change */
325 stats->Set(ctime_symbol, NODE_UNIXTIME_V8(s->st_ctime));
327 return scope.Close(stats);
331 // Extracts a C str from a V8 Utf8Value.
332 const char* ToCString(const v8::String::Utf8Value& value) {
333 return *value ? *value : "<str conversion failed>";
336 static void ReportException(TryCatch &try_catch, bool show_line = false) {
337 Handle<Message> message = try_catch.Message();
338 if (message.IsEmpty()) {
339 fprintf(stderr, "Error: (no message)\n");
344 Handle<Value> error = try_catch.Exception();
345 Handle<String> stack;
347 if (error->IsObject()) {
348 Handle<Object> obj = Handle<Object>::Cast(error);
349 Handle<Value> raw_stack = obj->Get(String::New("stack"));
350 if (raw_stack->IsString()) stack = Handle<String>::Cast(raw_stack);
354 // Print (filename):(line number): (message).
355 String::Utf8Value filename(message->GetScriptResourceName());
356 const char* filename_string = ToCString(filename);
357 int linenum = message->GetLineNumber();
358 fprintf(stderr, "%s:%i\n", filename_string, linenum);
359 // Print line of source code.
360 String::Utf8Value sourceline(message->GetSourceLine());
361 const char* sourceline_string = ToCString(sourceline);
362 fprintf(stderr, "%s\n", sourceline_string);
363 // Print wavy underline (GetUnderline is deprecated).
364 int start = message->GetStartColumn();
365 for (int i = 0; i < start; i++) {
366 fprintf(stderr, " ");
368 int end = message->GetEndColumn();
369 for (int i = start; i < end; i++) {
370 fprintf(stderr, "^");
372 fprintf(stderr, "\n");
375 if (stack.IsEmpty()) {
376 message->PrintCurrentStackTrace(stderr);
378 String::Utf8Value trace(stack);
379 fprintf(stderr, "%s\n", *trace);
384 // Executes a str within the current v8 context.
385 Local<Value> ExecuteString(Local<String> source, Local<Value> filename) {
389 Local<Script> script = Script::Compile(source, filename);
390 if (script.IsEmpty()) {
391 ReportException(try_catch);
395 Local<Value> result = script->Run();
396 if (result.IsEmpty()) {
397 ReportException(try_catch);
401 return scope.Close(result);
404 static Handle<Value> ByteLength(const Arguments& args) {
407 if (args.Length() < 1 || !args[0]->IsString()) {
408 return ThrowException(Exception::Error(String::New("Bad argument.")));
411 Local<Integer> length = Integer::New(DecodeBytes(args[0], ParseEncoding(args[1], UTF8)));
413 return scope.Close(length);
416 static Handle<Value> Loop(const Arguments& args) {
419 // TODO Probably don't need to start this each time.
420 // Avoids failing on test/mjsunit/test-eio-race3.js though
421 ev_idle_start(EV_DEFAULT_UC_ &eio_poller);
423 ev_loop(EV_DEFAULT_UC_ 0);
427 static Handle<Value> Unloop(const Arguments& args) {
429 int how = EVUNLOOP_ONE;
430 if (args[0]->IsString()) {
431 String::Utf8Value how_s(args[0]->ToString());
432 if (0 == strcmp(*how_s, "all")) {
436 ev_unloop(EV_DEFAULT_ how);
440 static Handle<Value> Chdir(const Arguments& args) {
443 if (args.Length() != 1 || !args[0]->IsString()) {
444 return ThrowException(Exception::Error(String::New("Bad argument.")));
447 String::Utf8Value path(args[0]->ToString());
449 int r = chdir(*path);
452 return ThrowException(Exception::Error(String::New(strerror(errno))));
458 static Handle<Value> Cwd(const Arguments& args) {
461 char output[PATH_MAX];
462 char *r = getcwd(output, PATH_MAX);
464 return ThrowException(Exception::Error(String::New(strerror(errno))));
466 Local<String> cwd = String::New(output);
468 return scope.Close(cwd);
471 static Handle<Value> Umask(const Arguments& args){
474 if(args.Length() < 1 || !args[0]->IsInt32()) {
475 return ThrowException(Exception::TypeError(
476 String::New("argument must be an integer.")));
478 unsigned int mask = args[0]->Uint32Value();
479 unsigned int old = umask((mode_t)mask);
481 return scope.Close(Uint32::New(old));
485 static Handle<Value> GetUid(const Arguments& args) {
488 return scope.Close(Integer::New(uid));
491 static Handle<Value> GetGid(const Arguments& args) {
494 return scope.Close(Integer::New(gid));
498 static Handle<Value> SetGid(const Arguments& args) {
501 if (args.Length() < 1) {
502 return ThrowException(Exception::Error(
503 String::New("setgid requires 1 argument")));
506 Local<Integer> given_gid = args[0]->ToInteger();
507 int gid = given_gid->Int32Value();
509 if ((result = setgid(gid)) != 0) {
510 return ThrowException(Exception::Error(String::New(strerror(errno))));
515 static Handle<Value> SetUid(const Arguments& args) {
518 if (args.Length() < 1) {
519 return ThrowException(Exception::Error(
520 String::New("setuid requires 1 argument")));
523 Local<Integer> given_uid = args[0]->ToInteger();
524 int uid = given_uid->Int32Value();
526 if ((result = setuid(uid)) != 0) {
527 return ThrowException(Exception::Error(String::New(strerror(errno))));
533 v8::Handle<v8::Value> Exit(const v8::Arguments& args) {
537 exit(args[0]->IntegerValue());
542 #define HAVE_GETMEM 1
543 #include <unistd.h> /* getpagesize() */
545 #if (!defined(_LP64)) && (_FILE_OFFSET_BITS - 0 == 64)
546 #define PROCFS_FILE_OFFSET_BITS_HACK 1
547 #undef _FILE_OFFSET_BITS
549 #define PROCFS_FILE_OFFSET_BITS_HACK 0
554 #if (PROCFS_FILE_OFFSET_BITS_HACK - 0 == 1)
555 #define _FILE_OFFSET_BITS 64
558 int getmem(size_t *rss, size_t *vsize) {
559 pid_t pid = getpid();
561 size_t page_size = getpagesize();
563 sprintf(pidpath, "/proc/%d/psinfo", pid);
566 FILE *f = fopen(pidpath, "r");
569 if (fread(&psinfo, sizeof(psinfo_t), 1, f) != 1) {
576 *vsize = (size_t) psinfo.pr_size * page_size;
577 *rss = (size_t) psinfo.pr_rssize * 1024;
587 #define HAVE_GETMEM 1
589 #include <sys/param.h>
590 #include <sys/sysctl.h>
591 #include <sys/user.h>
595 int getmem(size_t *rss, size_t *vsize) {
597 struct kinfo_proc *kinfo = NULL;
603 kd = kvm_open(NULL, NULL, NULL, O_RDONLY, "kvm_open");
604 if (kd == NULL) goto error;
606 kinfo = kvm_getprocs(kd, KERN_PROC_PID, pid, &nprocs);
607 if (kinfo == NULL) goto error;
609 *rss = kinfo->ki_rssize * PAGE_SIZE;
610 *vsize = kinfo->ki_size;
617 if (kd) kvm_close(kd);
620 #endif // __FreeBSD__
624 #define HAVE_GETMEM 1
625 /* Researched by Tim Becker and Michael Knight
626 * http://blog.kuriositaet.de/?p=257
629 #include <mach/task.h>
630 #include <mach/mach_init.h>
632 int getmem(size_t *rss, size_t *vsize) {
633 struct task_basic_info t_info;
634 mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT;
636 int r = task_info(mach_task_self(),
638 (task_info_t)&t_info,
641 if (r != KERN_SUCCESS) return -1;
643 *rss = t_info.resident_size;
644 *vsize = t_info.virtual_size;
651 # define HAVE_GETMEM 1
652 # include <sys/param.h> /* for MAXPATHLEN */
654 int getmem(size_t *rss, size_t *vsize) {
655 FILE *f = fopen("/proc/self/stat", "r");
660 char buffer[MAXPATHLEN];
661 size_t page_size = getpagesize();
664 if (fscanf(f, "%d ", &itmp) == 0) goto error;
666 if (fscanf (f, "%s ", &buffer[0]) == 0) goto error;
668 if (fscanf (f, "%c ", &ctmp) == 0) goto error;
670 if (fscanf (f, "%d ", &itmp) == 0) goto error;
672 if (fscanf (f, "%d ", &itmp) == 0) goto error;
674 if (fscanf (f, "%d ", &itmp) == 0) goto error;
676 if (fscanf (f, "%d ", &itmp) == 0) goto error;
677 /* TTY owner process group */
678 if (fscanf (f, "%d ", &itmp) == 0) goto error;
680 if (fscanf (f, "%u ", &itmp) == 0) goto error;
681 /* Minor faults (no memory page) */
682 if (fscanf (f, "%u ", &itmp) == 0) goto error;
683 /* Minor faults, children */
684 if (fscanf (f, "%u ", &itmp) == 0) goto error;
685 /* Major faults (memory page faults) */
686 if (fscanf (f, "%u ", &itmp) == 0) goto error;
687 /* Major faults, children */
688 if (fscanf (f, "%u ", &itmp) == 0) goto error;
690 if (fscanf (f, "%d ", &itmp) == 0) goto error;
692 if (fscanf (f, "%d ", &itmp) == 0) goto error;
693 /* utime, children */
694 if (fscanf (f, "%d ", &itmp) == 0) goto error;
695 /* stime, children */
696 if (fscanf (f, "%d ", &itmp) == 0) goto error;
697 /* jiffies remaining in current time slice */
698 if (fscanf (f, "%d ", &itmp) == 0) goto error;
700 if (fscanf (f, "%d ", &itmp) == 0) goto error;
701 /* jiffies until next timeout */
702 if (fscanf (f, "%u ", &itmp) == 0) goto error;
703 /* jiffies until next SIGALRM */
704 if (fscanf (f, "%u ", &itmp) == 0) goto error;
705 /* start time (jiffies since system boot) */
706 if (fscanf (f, "%d ", &itmp) == 0) goto error;
708 /* Virtual memory size */
709 if (fscanf (f, "%u ", &itmp) == 0) goto error;
710 *vsize = (size_t) itmp;
712 /* Resident set size */
713 if (fscanf (f, "%u ", &itmp) == 0) goto error;
714 *rss = (size_t) itmp * page_size;
717 if (fscanf (f, "%u ", &itmp) == 0) goto error;
719 if (fscanf (f, "%u ", &itmp) == 0) goto error;
721 if (fscanf (f, "%u ", &itmp) == 0) goto error;
723 if (fscanf (f, "%u ", &itmp) == 0) goto error;
735 v8::Handle<v8::Value> MemoryUsage(const v8::Arguments& args) {
739 return ThrowException(Exception::Error(String::New("Not support on your platform. (Talk to Ryan.)")));
743 int r = getmem(&rss, &vsize);
746 return ThrowException(Exception::Error(String::New(strerror(errno))));
749 Local<Object> info = Object::New();
751 if (rss_symbol.IsEmpty()) {
752 rss_symbol = NODE_PSYMBOL("rss");
753 vsize_symbol = NODE_PSYMBOL("vsize");
754 heap_total_symbol = NODE_PSYMBOL("heapTotal");
755 heap_used_symbol = NODE_PSYMBOL("heapUsed");
758 info->Set(rss_symbol, Integer::NewFromUnsigned(rss));
759 info->Set(vsize_symbol, Integer::NewFromUnsigned(vsize));
762 HeapStatistics v8_heap_stats;
763 V8::GetHeapStatistics(&v8_heap_stats);
764 info->Set(heap_total_symbol,
765 Integer::NewFromUnsigned(v8_heap_stats.total_heap_size()));
766 info->Set(heap_used_symbol,
767 Integer::NewFromUnsigned(v8_heap_stats.used_heap_size()));
769 return scope.Close(info);
774 v8::Handle<v8::Value> Kill(const v8::Arguments& args) {
777 if (args.Length() < 1 || !args[0]->IsNumber()) {
778 return ThrowException(Exception::Error(String::New("Bad argument.")));
781 pid_t pid = args[0]->IntegerValue();
785 if (args.Length() >= 2) {
786 if (args[1]->IsNumber()) {
787 sig = args[1]->Int32Value();
788 } else if (args[1]->IsString()) {
789 Local<String> signame = args[1]->ToString();
791 Local<Value> sig_v = process->Get(signame);
792 if (!sig_v->IsNumber()) {
793 return ThrowException(Exception::Error(String::New("Unknown signal")));
795 sig = sig_v->Int32Value();
799 int r = kill(pid, sig);
802 return ThrowException(Exception::Error(String::New(strerror(errno))));
808 typedef void (*extInit)(Handle<Object> exports);
810 // DLOpen is node.dlopen(). Used to load 'module.node' dynamically shared
812 Handle<Value> DLOpen(const v8::Arguments& args) {
815 if (args.Length() < 2) return Undefined();
817 String::Utf8Value filename(args[0]->ToString()); // Cast
818 Local<Object> target = args[1]->ToObject(); // Cast
820 // Actually call dlopen().
821 // FIXME: This is a blocking function and should be called asynchronously!
822 // This function should be moved to file.cc and use libeio to make this
824 void *handle = dlopen(*filename, RTLD_LAZY);
827 if (handle == NULL) {
828 Local<Value> exception = Exception::Error(String::New(dlerror()));
829 return ThrowException(exception);
832 // Get the init() function from the dynamically shared object.
833 void *init_handle = dlsym(handle, "init");
834 // Error out if not found.
835 if (init_handle == NULL) {
836 Local<Value> exception =
837 Exception::Error(String::New("No 'init' symbol found in module."));
838 return ThrowException(exception);
840 extInit init = (extInit)(init_handle); // Cast
842 // Execute the C++ module
848 Handle<Value> Compile(const Arguments& args) {
851 if (args.Length() < 2) {
852 return ThrowException(Exception::TypeError(
853 String::New("needs two arguments.")));
856 Local<String> source = args[0]->ToString();
857 Local<String> filename = args[1]->ToString();
861 Local<Script> script = Script::Compile(source, filename);
862 if (try_catch.HasCaught()) {
863 // Hack because I can't get a proper stacktrace on SyntaxError
864 ReportException(try_catch, true);
868 Local<Value> result = script->Run();
869 if (try_catch.HasCaught()) return try_catch.ReThrow();
871 return scope.Close(result);
874 static void OnFatalError(const char* location, const char* message) {
876 fprintf(stderr, "FATAL ERROR: %s %s\n", location, message);
878 fprintf(stderr, "FATAL ERROR: %s\n", message);
883 static int uncaught_exception_counter = 0;
885 void FatalException(TryCatch &try_catch) {
888 // Check if uncaught_exception_counter indicates a recursion
889 if (uncaught_exception_counter > 0) {
890 ReportException(try_catch);
894 if (listeners_symbol.IsEmpty()) {
895 listeners_symbol = NODE_PSYMBOL("listeners");
896 uncaught_exception_symbol = NODE_PSYMBOL("uncaughtException");
897 emit_symbol = NODE_PSYMBOL("emit");
900 Local<Value> listeners_v = process->Get(listeners_symbol);
901 assert(listeners_v->IsFunction());
903 Local<Function> listeners = Local<Function>::Cast(listeners_v);
905 Local<String> uncaught_exception_symbol_l = Local<String>::New(uncaught_exception_symbol);
906 Local<Value> argv[1] = { uncaught_exception_symbol_l };
907 Local<Value> ret = listeners->Call(process, 1, argv);
909 assert(ret->IsArray());
911 Local<Array> listener_array = Local<Array>::Cast(ret);
913 uint32_t length = listener_array->Length();
914 // Report and exit if process has no "uncaughtException" listener
916 ReportException(try_catch);
920 // Otherwise fire the process "uncaughtException" event
921 Local<Value> emit_v = process->Get(emit_symbol);
922 assert(emit_v->IsFunction());
924 Local<Function> emit = Local<Function>::Cast(emit_v);
926 Local<Value> error = try_catch.Exception();
927 Local<Value> event_argv[2] = { uncaught_exception_symbol_l, error };
929 uncaught_exception_counter++;
930 emit->Call(process, 2, event_argv);
931 // Decrement so we know if the next exception is a recursion or not
932 uncaught_exception_counter--;
936 static ev_async debug_watcher;
937 volatile static bool debugger_msg_pending = false;
939 static void DebugMessageCallback(EV_P_ ev_async *watcher, int revents) {
941 assert(watcher == &debug_watcher);
942 assert(revents == EV_ASYNC);
943 Debug::ProcessDebugMessages();
946 static void DebugMessageDispatch(void) {
947 // This function is called from V8's debug thread when a debug TCP client
948 // has sent a message.
950 // Send a signal to our main thread saying that it should enter V8 to
951 // handle the message.
952 debugger_msg_pending = true;
953 ev_async_send(EV_DEFAULT_UC_ &debug_watcher);
956 static Handle<Value> CheckBreak(const Arguments& args) {
959 // TODO FIXME This function is a hack to wait until V8 is ready to accept
960 // commands. There seems to be a bug in EnableAgent( _ , _ , true) which
961 // makes it unusable here. Ideally we'd be able to bind EnableAgent and
962 // get it to halt until Eclipse connects.
964 if (!debug_wait_connect)
967 printf("Waiting for remote debugger connection...\n");
969 const int halfSecond = 50;
970 const int tenMs=10000;
971 debugger_msg_pending = false;
973 if (debugger_msg_pending) {
975 Debug::ProcessDebugMessages();
976 debugger_msg_pending = false;
978 // wait for 500 msec of silence from remote debugger
979 int cnt = halfSecond;
981 debugger_msg_pending = false;
983 if (debugger_msg_pending) {
984 debugger_msg_pending = false;
996 static void Load(int argc, char *argv[]) {
999 Local<FunctionTemplate> process_template = FunctionTemplate::New();
1000 node::EventEmitter::Initialize(process_template);
1002 process = Persistent<Object>::New(process_template->GetFunction()->NewInstance());
1004 // Add a reference to the global object
1005 Local<Object> global = Context::GetCurrent()->Global();
1006 process->Set(String::NewSymbol("global"), global);
1009 process->Set(String::NewSymbol("version"), String::New(NODE_VERSION));
1010 // process.installPrefix
1011 process->Set(String::NewSymbol("installPrefix"), String::New(NODE_PREFIX));
1014 #define xstr(s) str(s)
1016 process->Set(String::NewSymbol("platform"), String::New(xstr(PLATFORM)));
1020 Local<Array> arguments = Array::New(argc - option_end_index + 1);
1021 arguments->Set(Integer::New(0), String::New(argv[0]));
1022 for (j = 1, i = option_end_index + 1; i < argc; j++, i++) {
1023 Local<String> arg = String::New(argv[i]);
1024 arguments->Set(Integer::New(j), arg);
1027 process->Set(String::NewSymbol("ARGV"), arguments);
1028 process->Set(String::NewSymbol("argv"), arguments);
1030 // create process.env
1031 Local<Object> env = Object::New();
1032 for (i = 0; environ[i]; i++) {
1033 // skip entries without a '=' character
1034 for (j = 0; environ[i][j] && environ[i][j] != '='; j++) { ; }
1035 // create the v8 objects
1036 Local<String> field = String::New(environ[i], j);
1037 Local<String> value = Local<String>();
1038 if (environ[i][j] == '=') {
1039 value = String::New(environ[i]+j+1);
1042 env->Set(field, value);
1044 // assign process.ENV
1045 process->Set(String::NewSymbol("ENV"), env);
1046 process->Set(String::NewSymbol("env"), env);
1048 process->Set(String::NewSymbol("pid"), Integer::New(getpid()));
1050 // define various internal methods
1051 NODE_SET_METHOD(process, "loop", Loop);
1052 NODE_SET_METHOD(process, "unloop", Unloop);
1053 NODE_SET_METHOD(process, "compile", Compile);
1054 NODE_SET_METHOD(process, "_byteLength", ByteLength);
1055 NODE_SET_METHOD(process, "reallyExit", Exit);
1056 NODE_SET_METHOD(process, "chdir", Chdir);
1057 NODE_SET_METHOD(process, "cwd", Cwd);
1058 NODE_SET_METHOD(process, "getuid", GetUid);
1059 NODE_SET_METHOD(process, "setuid", SetUid);
1061 NODE_SET_METHOD(process, "setgid", SetGid);
1062 NODE_SET_METHOD(process, "getgid", GetGid);
1064 NODE_SET_METHOD(process, "umask", Umask);
1065 NODE_SET_METHOD(process, "dlopen", DLOpen);
1066 NODE_SET_METHOD(process, "kill", Kill);
1067 NODE_SET_METHOD(process, "memoryUsage", MemoryUsage);
1068 NODE_SET_METHOD(process, "checkBreak", CheckBreak);
1070 // Assign the EventEmitter. It was created in main().
1071 process->Set(String::NewSymbol("EventEmitter"),
1072 EventEmitter::constructor_template->GetFunction());
1074 // Initialize the stats object
1075 Local<FunctionTemplate> stat_templ = FunctionTemplate::New();
1076 stats_constructor_template = Persistent<FunctionTemplate>::New(stat_templ);
1077 process->Set(String::NewSymbol("Stats"),
1078 stats_constructor_template->GetFunction());
1081 // Initialize the C++ modules..................filename of module
1082 IdleWatcher::Initialize(process); // idle_watcher.cc
1083 Stdio::Initialize(process); // stdio.cc
1084 Timer::Initialize(process); // timer.cc
1085 SignalHandler::Initialize(process); // signal_handler.cc
1086 Stat::Initialize(process); // stat.cc
1087 ChildProcess::Initialize(process); // child_process.cc
1088 DefineConstants(process); // constants.cc
1090 Local<Object> dns = Object::New();
1091 process->Set(String::NewSymbol("dns"), dns);
1092 DNS::Initialize(dns); // dns.cc
1093 Local<Object> fs = Object::New();
1094 process->Set(String::NewSymbol("fs"), fs);
1095 File::Initialize(fs); // file.cc
1096 // Create node.tcp. Note this separate from lib/tcp.js which is the public
1098 Local<Object> tcp = Object::New();
1099 process->Set(String::New("tcp"), tcp);
1100 Server::Initialize(tcp); // tcp.cc
1101 Connection::Initialize(tcp); // tcp.cc
1102 // Create node.http. Note this separate from lib/http.js which is the
1104 Local<Object> http = Object::New();
1105 process->Set(String::New("http"), http);
1106 HTTPServer::Initialize(http); // http.cc
1107 HTTPConnection::Initialize(http); // http.cc
1111 // Compile, execute the src/node.js file. (Which was included as static C
1112 // string in node_natives.h. 'natve_node' is the string containing that
1115 // The node.js file returns a function 'f'
1121 Local<Value> f_value = ExecuteString(String::New(native_node),
1122 String::New("node.js"));
1124 if (try_catch.HasCaught()) {
1125 ReportException(try_catch);
1129 assert(f_value->IsFunction());
1130 Local<Function> f = Local<Function>::Cast(f_value);
1132 // Now we call 'f' with the 'process' variable that we've built up with
1133 // all our bindings. Inside node.js we'll take care of assigning things to
1136 // We start the process this way in order to be more modular. Developers
1137 // who do not like how 'src/node.js' setups the module system but do like
1138 // Node's I/O bindings may want to replace 'f' with their own function.
1140 Local<Value> args[1] = { Local<Value>::New(process) };
1142 f->Call(global, 1, args);
1145 if (try_catch.HasCaught()) {
1146 ReportException(try_catch);
1152 static void PrintHelp();
1154 static void ParseDebugOpt(const char* arg) {
1157 use_debug_agent = true;
1158 if (!strcmp (arg, "--debug-brk")) {
1159 debug_wait_connect = true;
1161 } else if (!strcmp(arg, "--debug")) {
1163 } else if (strstr(arg, "--debug-brk=") == arg) {
1164 debug_wait_connect = true;
1165 p = 1 + strchr(arg, '=');
1166 debug_port = atoi(p);
1167 } else if (strstr(arg, "--debug=") == arg) {
1168 p = 1 + strchr(arg, '=');
1169 debug_port = atoi(p);
1171 if (p && debug_port > 1024 && debug_port < 65536)
1174 fprintf(stderr, "Bad debug option.\n");
1175 if (p) fprintf(stderr, "Debug port must be in range 1025 to 65535.\n");
1181 static void PrintHelp() {
1182 printf("Usage: node [options] script.js [arguments] \n"
1183 " -v, --version print node's version\n"
1184 " --debug[=port] enable remote debugging via given TCP port\n"
1185 " without stopping the execution\n"
1186 " --debug-brk[=port] as above, but break in script.js and\n"
1187 " wait for remote debugger to connect\n"
1188 " --cflags print pre-processor and compiler flags\n"
1189 " --v8-options print v8 command line options\n\n"
1190 "Documentation can be found at http://nodejs.org/api.html"
1191 " or with 'man node'\n");
1194 // Parse node command line arguments.
1195 static void ParseArgs(int *argc, char **argv) {
1196 // TODO use parse opts
1197 for (int i = 1; i < *argc; i++) {
1198 const char *arg = argv[i];
1199 if (strstr(arg, "--debug") == arg) {
1201 argv[i] = const_cast<char*>("");
1202 option_end_index = i;
1203 } else if (strcmp(arg, "--version") == 0 || strcmp(arg, "-v") == 0) {
1204 printf("%s\n", NODE_VERSION);
1206 } else if (strcmp(arg, "--cflags") == 0) {
1207 printf("%s\n", NODE_CFLAGS);
1209 } else if (strcmp(arg, "--help") == 0 || strcmp(arg, "-h") == 0) {
1212 } else if (strcmp(arg, "--v8-options") == 0) {
1213 argv[i] = const_cast<char*>("--help");
1214 option_end_index = i+1;
1215 } else if (argv[i][0] != '-') {
1216 option_end_index = i-1;
1225 int main(int argc, char *argv[]) {
1226 // Parse a few arguments which are specific to Node.
1227 node::ParseArgs(&argc, argv);
1228 // Parse the rest of the args (up to the 'option_end_index' (where '--' was
1229 // in the command line))
1230 V8::SetFlagsFromCommandLine(&node::option_end_index, argv, false);
1232 // Error out if we don't have a script argument.
1234 fprintf(stderr, "No script was specified.\n");
1239 // Ignore the SIGPIPE
1240 evcom_ignore_sigpipe();
1242 // Initialize the default ev loop.
1244 // TODO(Ryan) I'm experiencing abnormally high load using Solaris's
1245 // EVBACKEND_PORT. Temporarally forcing select() until I debug.
1246 ev_default_loop(EVBACKEND_SELECT);
1247 #elif defined(__APPLE__)
1248 ev_default_loop(EVBACKEND_KQUEUE);
1250 ev_default_loop(EVFLAG_AUTO);
1254 ev_timer_init(&node::gc_timer, node::GCTimeout, GC_INTERVAL, GC_INTERVAL);
1255 // Set the gc_timer to max priority so that it runs before all other
1256 // watchers. In this way it can check if the 'tick' has other pending
1257 // watchers by using ev_pending_count() - if it ran with lower priority
1258 // then the other watchers might run before it - not giving us good idea
1259 // of loop idleness.
1260 ev_set_priority(&node::gc_timer, EV_MAXPRI);
1261 ev_timer_start(EV_DEFAULT_UC_ &node::gc_timer);
1262 ev_unref(EV_DEFAULT_UC);
1265 // Setup the EIO thread pool
1266 { // It requires 3, yes 3, watchers.
1267 ev_idle_init(&node::eio_poller, node::DoPoll);
1269 ev_async_init(&node::eio_want_poll_notifier, node::WantPollNotifier);
1270 ev_async_start(EV_DEFAULT_UC_ &node::eio_want_poll_notifier);
1271 ev_unref(EV_DEFAULT_UC);
1273 ev_async_init(&node::eio_done_poll_notifier, node::DonePollNotifier);
1274 ev_async_start(EV_DEFAULT_UC_ &node::eio_done_poll_notifier);
1275 ev_unref(EV_DEFAULT_UC);
1277 eio_init(node::EIOWantPoll, node::EIODonePoll);
1278 // Don't handle more than 10 reqs on each eio_poll(). This is to avoid
1279 // race conditions. See test/mjsunit/test-eio-race.js
1280 eio_set_max_poll_reqs(10);
1284 HandleScope handle_scope;
1286 V8::SetFatalErrorHandler(node::OnFatalError);
1288 // If the --debug flag was specified then initialize the debug thread.
1289 if (node::use_debug_agent) {
1290 // Initialize the async watcher for receiving messages from the debug
1291 // thread and marshal it into the main thread. DebugMessageCallback()
1292 // is called from the main thread to execute a random bit of javascript
1293 // - which will give V8 control so it can handle whatever new message
1294 // had been received on the debug thread.
1295 ev_async_init(&node::debug_watcher, node::DebugMessageCallback);
1296 ev_set_priority(&node::debug_watcher, EV_MAXPRI);
1297 // Set the callback DebugMessageDispatch which is called from the debug
1299 Debug::SetDebugMessageDispatchHandler(node::DebugMessageDispatch);
1300 // Start the async watcher.
1301 ev_async_start(EV_DEFAULT_UC_ &node::debug_watcher);
1302 // unref it so that we exit the event loop despite it being active.
1303 ev_unref(EV_DEFAULT_UC);
1305 // Start the debug thread and it's associated TCP server on port 5858.
1306 bool r = Debug::EnableAgent("node " NODE_VERSION, node::debug_port);
1308 // Crappy check that everything went well. FIXME
1310 // Print out some information.
1311 printf("debugger listening on port %d\n", node::debug_port);
1314 // Create the one and only Context.
1315 Persistent<Context> context = Context::New();
1316 Context::Scope context_scope(context);
1318 // Create all the objects, load modules, do everything.
1319 // so your next reading stop should be node::Load()!
1320 node::Load(argc, argv);
1322 node::Stdio::Flush();