node/src/node_internals.h at master · ericz/node · GitHub

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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.

#ifndef SRC_NODE_INTERNALS_H_

#define SRC_NODE_INTERNALS_H_

#include "v8.h"

namespace node {

#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

#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);

}

} // namespace node

#endif // SRC_NODE_INTERNALS_H_

node/src/node_internals.h at master · ericz/node · GitHub

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