CSE2410 Fall 2014 Bounce

// 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.

#ifndef SRC_NODE_INTERNALS_H_

#define SRC_NODE_INTERNALS_H_

#include <stdlib.h>

#include "v8.h"

namespace node {

// Defined in node.cc

extern v8::Isolate* node_isolate;

// Defined in node.cc at startup.

extern v8::Persistent<v8::Object> process;

#ifdef _WIN32

// emulate snprintf() on windows, _snprintf() doesn't zero-terminate the buffer

// on overflow...

#include <stdarg.h>

inline static int snprintf(char* buf, unsigned int len, const char* fmt, ...) {

  va_list ap;

  va_start(ap, fmt);

  int n = _vsprintf_p(buf, len, fmt, ap);

  if (len) buf[len - 1] = '\0';

  va_end(ap);

  return n;

}

#endif

#if defined(__x86_64__)

# define BITS_PER_LONG 64

#else

# define BITS_PER_LONG 32

#endif

#ifndef offset_of

// g++ in strict mode complains loudly about the system offsetof() macro

// because it uses NULL as the base address.

# define offset_of(type, member) \

  ((intptr_t) ((char *) &(((type *) 8)->member) - 8))

#endif

#ifndef container_of

# define container_of(ptr, type, member) \

  ((type *) ((char *) (ptr) - offset_of(type, member)))

#endif

#ifndef ARRAY_SIZE

# define ARRAY_SIZE(a) (sizeof((a)) / sizeof((a)[0]))

#endif

#ifndef ROUND_UP

# define ROUND_UP(a, b) ((a) % (b) ? ((a) + (b)) - ((a) % (b)) : (a))

#endif

// this would have been a template function were it not for the fact that g++

// sometimes fails to resolve it...

#define THROW_ERROR(fun)                                                      \

  do {                                                                        \

    v8::HandleScope scope;                                                    \

    return v8::ThrowException(fun(v8::String::New(errmsg)));                  \

  }                                                                           \

  while (0)

inline static v8::Handle<v8::Value> ThrowError(const char* errmsg) {

  THROW_ERROR(v8::Exception::Error);

}

inline static v8::Handle<v8::Value> ThrowTypeError(const char* errmsg) {

  THROW_ERROR(v8::Exception::TypeError);

}

inline static v8::Handle<v8::Value> ThrowRangeError(const char* errmsg) {

  THROW_ERROR(v8::Exception::RangeError);

}

#define UNWRAP(type)                                                        \

  assert(!args.Holder().IsEmpty());                                         \

  assert(args.Holder()->InternalFieldCount() > 0);                          \

  type* wrap = static_cast<type*>(                                          \

      args.Holder()->GetPointerFromInternalField(0));                \

  if (!wrap) {                                                              \

    fprintf(stderr, #type ": Aborting due to unwrap failure at %s:%d\n",    \

            __FILE__, __LINE__);                                            \

    abort();                                                                \

  }

v8::Handle<v8::Value> FromConstructorTemplate(

    v8::Persistent<v8::FunctionTemplate> t,

    const v8::Arguments& args);

} // namespace node

#endif // SRC_NODE_INTERNALS_H_