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3230 lines (2556 loc) · 83.6 KB
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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
#include "node.h"
#include "node_buffer.h"
#include "node_constants.h"
#include "node_file.h"
#include "node_http_parser.h"
#include "node_javascript.h"
#include "node_version.h"
#if defined HAVE_PERFCTR
#include "node_counters.h"
#endif
#if HAVE_OPENSSL
#include "node_crypto.h"
#endif
#if defined HAVE_DTRACE || defined HAVE_ETW || defined HAVE_SYSTEMTAP
#include "node_dtrace.h"
#endif
#if HAVE_SYSTEMTAP
#include "node_provider.h"
#endif
#include "ares.h"
#include "handle_wrap.h"
#include "req_wrap.h"
#include "string_bytes.h"
#include "uv.h"
#include "v8-debug.h"
#include "zlib.h"
#include <assert.h>
#include <errno.h>
#include <limits.h> // PATH_MAX
#include <locale.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#if defined(_MSC_VER)
#include <direct.h>
#include <io.h>
#include <process.h>
#define strcasecmp _stricmp
#define getpid _getpid
#define umask _umask
typedef int mode_t;
#else
#include <unistd.h> // setuid, getuid
#endif
#if defined(__POSIX__) && !defined(__ANDROID__)
#include <pwd.h> // getpwnam()
#include <grp.h> // getgrnam()
#endif
#ifdef __APPLE__
#include <crt_externs.h>
#define environ (*_NSGetEnviron())
#elif !defined(_MSC_VER)
extern char **environ;
#endif
namespace node {
using v8::Array;
using v8::ArrayBuffer;
using v8::Boolean;
using v8::Context;
using v8::Exception;
using v8::Function;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::Handle;
using v8::HandleScope;
using v8::HeapStatistics;
using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::Locker;
using v8::Message;
using v8::Number;
using v8::Object;
using v8::ObjectTemplate;
using v8::Persistent;
using v8::PropertyCallbackInfo;
using v8::ResourceConstraints;
using v8::SetResourceConstraints;
using v8::String;
using v8::ThrowException;
using v8::TryCatch;
using v8::Uint32;
using v8::V8;
using v8::Value;
using v8::kExternalUnsignedIntArray;
QUEUE handle_wrap_queue = { &handle_wrap_queue, &handle_wrap_queue };
QUEUE req_wrap_queue = { &req_wrap_queue, &req_wrap_queue };
// declared in req_wrap.h
Cached<String> process_symbol;
Cached<String> domain_symbol;
// declared in node_internals.h
Persistent<Object> process_p;
static Persistent<Function> process_tickCallback;
static Persistent<Object> binding_cache;
static Persistent<Array> module_load_list;
static Persistent<Array> p_domain_box;
static Cached<String> exports_symbol;
static Cached<String> errno_symbol;
static Cached<String> syscall_symbol;
static Cached<String> errpath_symbol;
static Cached<String> code_symbol;
static Cached<String> rss_symbol;
static Cached<String> heap_total_symbol;
static Cached<String> heap_used_symbol;
static Cached<String> fatal_exception_symbol;
static Cached<String> enter_symbol;
static Cached<String> exit_symbol;
static Cached<String> disposed_symbol;
// Essential for node_wrap.h
Persistent<FunctionTemplate> pipeConstructorTmpl;
Persistent<FunctionTemplate> tcpConstructorTmpl;
Persistent<FunctionTemplate> ttyConstructorTmpl;
static bool print_eval = false;
static bool force_repl = false;
static bool trace_deprecation = false;
static bool throw_deprecation = false;
static const char* eval_string = NULL;
static bool use_debug_agent = false;
static bool debug_wait_connect = false;
static int debug_port = 5858;
bool using_domains = false;
// used by C++ modules as well
bool no_deprecation = false;
static uv_check_t check_immediate_watcher;
static uv_idle_t idle_immediate_dummy;
static bool need_immediate_cb;
static Cached<String> immediate_callback_sym;
// for quick ref to tickCallback values
static struct {
uint32_t length;
uint32_t index;
uint32_t in_tick;
uint32_t last_threw;
} tick_infobox;
// easily communicate domain depth
static struct {
uint32_t count;
} domain_flag;
// process-relative uptime base, initialized at start-up
static double prog_start_time;
static volatile bool debugger_running = false;
static uv_async_t dispatch_debug_messages_async;
static uv_async_t emit_debug_enabled_async;
// Declared in node_internals.h
Isolate* node_isolate = NULL;
class ArrayBufferAllocator : public ArrayBuffer::Allocator {
public:
// Impose an upper limit to avoid out of memory errors that bring down
// the process.
static const size_t kMaxLength = 0x3fffffff;
static ArrayBufferAllocator the_singleton;
virtual ~ArrayBufferAllocator() {}
virtual void* Allocate(size_t length);
virtual void Free(void* data);
private:
ArrayBufferAllocator() {}
ArrayBufferAllocator(const ArrayBufferAllocator&);
void operator=(const ArrayBufferAllocator&);
};
ArrayBufferAllocator ArrayBufferAllocator::the_singleton;
void* ArrayBufferAllocator::Allocate(size_t length) {
if (length > kMaxLength) return NULL;
return new char[length];
}
void ArrayBufferAllocator::Free(void* data) {
delete[] static_cast<char*>(data);
}
static void CheckImmediate(uv_check_t* handle, int status) {
assert(handle == &check_immediate_watcher);
assert(status == 0);
HandleScope scope(node_isolate);
if (immediate_callback_sym.IsEmpty()) {
immediate_callback_sym =
FIXED_ONE_BYTE_STRING(node_isolate, "_immediateCallback");
}
MakeCallback(process_p, immediate_callback_sym, 0, NULL);
}
static void IdleImmediateDummy(uv_idle_t* handle, int status) {
// Do nothing. Only for maintaining event loop
assert(handle == &idle_immediate_dummy);
assert(status == 0);
}
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);
#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 SIGBREAK
SIGNO_CASE(SIGBREAK);
#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 = OneByteString(node_isolate, errno_string(errorno));
if (msg == NULL || msg[0] == '\0') {
msg = strerror(errorno);
}
Local<String> message = OneByteString(node_isolate, msg);
Local<String> cons1 =
String::Concat(estring, FIXED_ONE_BYTE_STRING(node_isolate, ", "));
Local<String> cons2 = String::Concat(cons1, message);
if (syscall_symbol.IsEmpty()) {
syscall_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "syscall");
errno_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "errno");
errpath_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "path");
code_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "code");
}
if (path) {
Local<String> cons3 =
String::Concat(cons2, FIXED_ONE_BYTE_STRING(node_isolate, " '"));
Local<String> cons4 =
String::Concat(cons3, String::NewFromUtf8(node_isolate, path));
Local<String> cons5 =
String::Concat(cons4, FIXED_ONE_BYTE_STRING(node_isolate, "'"));
e = Exception::Error(cons5);
} else {
e = Exception::Error(cons2);
}
Local<Object> obj = e->ToObject();
obj->Set(errno_symbol, Integer::New(errorno, node_isolate));
obj->Set(code_symbol, estring);
if (path) obj->Set(errpath_symbol, String::NewFromUtf8(node_isolate, path));
if (syscall) obj->Set(syscall_symbol, OneByteString(node_isolate, syscall));
return e;
}
// hack alert! copy of ErrnoException, tuned for uv errors
Local<Value> UVException(int errorno,
const char *syscall,
const char *msg,
const char *path) {
if (syscall_symbol.IsEmpty()) {
syscall_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "syscall");
errno_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "errno");
errpath_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "path");
code_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "code");
}
if (!msg || !msg[0])
msg = uv_strerror(errorno);
Local<String> estring = OneByteString(node_isolate, uv_err_name(errorno));
Local<String> message = OneByteString(node_isolate, msg);
Local<String> cons1 =
String::Concat(estring, FIXED_ONE_BYTE_STRING(node_isolate, ", "));
Local<String> cons2 = String::Concat(cons1, message);
Local<Value> e;
Local<String> path_str;
if (path) {
#ifdef _WIN32
if (strncmp(path, "\\\\?\\UNC\\", 8) == 0) {
path_str = String::Concat(FIXED_ONE_BYTE_STRING(node_isolate, "\\\\"),
String::NewFromUtf8(node_isolate, path + 8));
} else if (strncmp(path, "\\\\?\\", 4) == 0) {
path_str = String::NewFromUtf8(node_isolate, path + 4);
} else {
path_str = String::NewFromUtf8(node_isolate, path);
}
#else
path_str = String::NewFromUtf8(node_isolate, path);
#endif
Local<String> cons3 =
String::Concat(cons2, FIXED_ONE_BYTE_STRING(node_isolate, " '"));
Local<String> cons4 =
String::Concat(cons3, path_str);
Local<String> cons5 =
String::Concat(cons4, FIXED_ONE_BYTE_STRING(node_isolate, "'"));
e = Exception::Error(cons5);
} else {
e = Exception::Error(cons2);
}
Local<Object> obj = e->ToObject();
// TODO(piscisaureus) errno should probably go
obj->Set(errno_symbol, Integer::New(errorno, node_isolate));
obj->Set(code_symbol, estring);
if (path) obj->Set(errpath_symbol, path_str);
if (syscall) obj->Set(syscall_symbol, OneByteString(node_isolate, syscall));
return e;
}
#ifdef _WIN32
// Does about the same as strerror(),
// but supports all windows error messages
static const char *winapi_strerror(const int errorno) {
char *errmsg = NULL;
FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS, NULL, errorno,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&errmsg, 0, NULL);
if (errmsg) {
// Remove trailing newlines
for (int i = strlen(errmsg) - 1;
i >= 0 && (errmsg[i] == '\n' || errmsg[i] == '\r'); i--) {
errmsg[i] = '\0';
}
return errmsg;
} else {
// FormatMessage failed
return "Unknown error";
}
}
Local<Value> WinapiErrnoException(int errorno,
const char* syscall,
const char* msg,
const char* path) {
Local<Value> e;
if (!msg || !msg[0]) {
msg = winapi_strerror(errorno);
}
Local<String> message = OneByteString(node_isolate, msg);
if (syscall_symbol.IsEmpty()) {
syscall_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "syscall");
errno_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "errno");
errpath_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "path");
code_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "code");
}
if (path) {
Local<String> cons1 =
String::Concat(message, FIXED_ONE_BYTE_STRING(node_isolate, " '"));
Local<String> cons2 =
String::Concat(cons1, String::NewFromUtf8(node_isolate, path));
Local<String> cons3 =
String::Concat(cons2, FIXED_ONE_BYTE_STRING(node_isolate, "'"));
e = Exception::Error(cons3);
} else {
e = Exception::Error(message);
}
Local<Object> obj = e->ToObject();
obj->Set(errno_symbol, Integer::New(errorno, node_isolate));
if (path) obj->Set(errpath_symbol, String::NewFromUtf8(node_isolate, path));
if (syscall) obj->Set(syscall_symbol, OneByteString(node_isolate, syscall));
return e;
}
#endif
void SetupDomainUse(const FunctionCallbackInfo<Value>& args) {
if (using_domains) return;
HandleScope scope(node_isolate);
using_domains = true;
Local<Object> process = PersistentToLocal(node_isolate, process_p);
Local<Value> tdc_v =
process->Get(FIXED_ONE_BYTE_STRING(node_isolate, "_tickDomainCallback"));
if (!tdc_v->IsFunction()) {
fprintf(stderr, "process._tickDomainCallback assigned to non-function\n");
abort();
}
Local<Function> tdc = tdc_v.As<Function>();
process->Set(FIXED_ONE_BYTE_STRING(node_isolate, "_tickCallback"), tdc);
process_tickCallback.Reset(node_isolate, tdc);
if (!args[0]->IsArray()) {
fprintf(stderr, "_setupDomainUse first argument must be an array\n");
abort();
}
p_domain_box.Reset(node_isolate, args[0].As<Array>());
if (!args[1]->IsObject()) {
fprintf(stderr, "_setupDomainUse second argument must be an object\n");
abort();
}
Local<Object> flag = args[1].As<Object>();
flag->SetIndexedPropertiesToExternalArrayData(&domain_flag,
kExternalUnsignedIntArray,
1);
}
bool InDomain() {
return using_domains && domain_flag.count > 0;
}
Handle<Value> GetDomain() {
// no domain can exist if no domain module has been loaded
if (!InDomain() || p_domain_box.IsEmpty())
return Null(node_isolate);
return PersistentToLocal(node_isolate, p_domain_box)->Get(0);
}
Handle<Value>
MakeDomainCallback(const Handle<Object> object,
const Handle<Function> callback,
int argc,
Handle<Value> argv[]) {
// TODO(trevnorris) Hook for long stack traces to be made here.
// lazy load domain specific symbols
if (enter_symbol.IsEmpty()) {
enter_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "enter");
exit_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "exit");
disposed_symbol = FIXED_ONE_BYTE_STRING(node_isolate, "_disposed");
}
Local<Value> domain_v = object->Get(domain_symbol);
Local<Object> domain;
Local<Function> enter;
Local<Function> exit;
TryCatch try_catch;
try_catch.SetVerbose(true);
bool has_domain = domain_v->IsObject();
if (has_domain) {
domain = domain_v->ToObject();
assert(!domain.IsEmpty());
if (domain->Get(disposed_symbol)->IsTrue()) {
// domain has been disposed of.
return Undefined(node_isolate);
}
enter = Local<Function>::Cast(domain->Get(enter_symbol));
assert(!enter.IsEmpty());
enter->Call(domain, 0, NULL);
if (try_catch.HasCaught()) {
return Undefined(node_isolate);
}
}
Local<Value> ret = callback->Call(object, argc, argv);
if (try_catch.HasCaught()) {
return Undefined(node_isolate);
}
if (has_domain) {
exit = Local<Function>::Cast(domain->Get(exit_symbol));
assert(!exit.IsEmpty());
exit->Call(domain, 0, NULL);
if (try_catch.HasCaught()) {
return Undefined(node_isolate);
}
}
if (tick_infobox.last_threw == 1) {
tick_infobox.last_threw = 0;
return ret;
}