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Copy pathnode_internals.h
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323 lines (274 loc) · 10.6 KB
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#ifndef SRC_NODE_INTERNALS_H_
#define SRC_NODE_INTERNALS_H_
#include "node.h"
#include "util.h"
#include "util-inl.h"
#include "uv.h"
#include "v8.h"
#include <stdint.h>
#include <stdlib.h>
struct sockaddr;
// Variation on NODE_DEFINE_CONSTANT that sets a String value.
#define NODE_DEFINE_STRING_CONSTANT(target, name, constant) \
do { \
v8::Isolate* isolate = target->GetIsolate(); \
v8::Local<v8::String> constant_name = \
v8::String::NewFromUtf8(isolate, name); \
v8::Local<v8::String> constant_value = \
v8::String::NewFromUtf8(isolate, constant); \
v8::PropertyAttribute constant_attributes = \
static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete); \
target->ForceSet(isolate->GetCurrentContext(), \
constant_name, \
constant_value, \
constant_attributes); \
} while (0)
namespace node {
// Forward declaration
class Environment;
// If persistent.IsWeak() == false, then do not call persistent.Reset()
// while the returned Local<T> is still in scope, it will destroy the
// reference to the object.
template <class TypeName>
inline v8::Local<TypeName> PersistentToLocal(
v8::Isolate* isolate,
const v8::Persistent<TypeName>& persistent);
// Call with valid HandleScope and while inside Context scope.
v8::Handle<v8::Value> MakeCallback(Environment* env,
v8::Handle<v8::Object> recv,
const char* method,
int argc = 0,
v8::Handle<v8::Value>* argv = nullptr);
// Call with valid HandleScope and while inside Context scope.
v8::Handle<v8::Value> MakeCallback(Environment* env,
v8::Handle<v8::Object> recv,
uint32_t index,
int argc = 0,
v8::Handle<v8::Value>* argv = nullptr);
// Call with valid HandleScope and while inside Context scope.
v8::Handle<v8::Value> MakeCallback(Environment* env,
v8::Handle<v8::Object> recv,
v8::Handle<v8::String> symbol,
int argc = 0,
v8::Handle<v8::Value>* argv = nullptr);
// Call with valid HandleScope and while inside Context scope.
v8::Handle<v8::Value> MakeCallback(Environment* env,
v8::Handle<v8::Value> recv,
v8::Handle<v8::Function> callback,
int argc = 0,
v8::Handle<v8::Value>* argv = nullptr);
bool KickNextTick();
// Convert a struct sockaddr to a { address: '1.2.3.4', port: 1234 } JS object.
// Sets address and port properties on the info object and returns it.
// If |info| is omitted, a new object is returned.
v8::Local<v8::Object> AddressToJS(
Environment* env,
const sockaddr* addr,
v8::Local<v8::Object> info = v8::Handle<v8::Object>());
template <typename T, int (*F)(const typename T::HandleType*, sockaddr*, int*)>
void GetSockOrPeerName(const v8::FunctionCallbackInfo<v8::Value>& args) {
T* const wrap = Unwrap<T>(args.Holder());
CHECK(args[0]->IsObject());
sockaddr_storage storage;
int addrlen = sizeof(storage);
sockaddr* const addr = reinterpret_cast<sockaddr*>(&storage);
const int err = F(&wrap->handle_, addr, &addrlen);
if (err == 0)
AddressToJS(wrap->env(), addr, args[0].As<v8::Object>());
args.GetReturnValue().Set(err);
}
#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 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
#if defined(__GNUC__) && __GNUC__ >= 4
# define MUST_USE_RESULT __attribute__((warn_unused_result))
# define NO_RETURN __attribute__((noreturn))
#else
# define MUST_USE_RESULT
# define NO_RETURN
#endif
void AppendExceptionLine(Environment* env,
v8::Handle<v8::Value> er,
v8::Handle<v8::Message> message);
NO_RETURN void FatalError(const char* location, const char* message);
v8::Local<v8::Value> BuildStatsObject(Environment* env, const uv_stat_t* s);
enum Endianness {
kLittleEndian, // _Not_ LITTLE_ENDIAN, clashes with endian.h.
kBigEndian
};
inline enum Endianness GetEndianness() {
// Constant-folded by the compiler.
const union {
uint8_t u8[2];
uint16_t u16;
} u = {
{ 1, 0 }
};
return u.u16 == 1 ? kLittleEndian : kBigEndian;
}
inline bool IsLittleEndian() {
return GetEndianness() == kLittleEndian;
}
inline bool IsBigEndian() {
return GetEndianness() == kBigEndian;
}
// parse index for external array data
inline MUST_USE_RESULT bool ParseArrayIndex(v8::Handle<v8::Value> arg,
size_t def,
size_t* ret) {
if (arg->IsUndefined()) {
*ret = def;
return true;
}
int32_t tmp_i = arg->Int32Value();
if (tmp_i < 0)
return false;
*ret = static_cast<size_t>(tmp_i);
return true;
}
void ThrowError(v8::Isolate* isolate, const char* errmsg);
void ThrowTypeError(v8::Isolate* isolate, const char* errmsg);
void ThrowRangeError(v8::Isolate* isolate, const char* errmsg);
void ThrowErrnoException(v8::Isolate* isolate,
int errorno,
const char* syscall = nullptr,
const char* message = nullptr,
const char* path = nullptr);
void ThrowUVException(v8::Isolate* isolate,
int errorno,
const char* syscall = nullptr,
const char* message = nullptr,
const char* path = nullptr,
const char* dest = nullptr);
NODE_DEPRECATED("Use ThrowError(isolate)",
inline void ThrowError(const char* errmsg) {
v8::Isolate* isolate = v8::Isolate::GetCurrent();
return ThrowError(isolate, errmsg);
})
NODE_DEPRECATED("Use ThrowTypeError(isolate)",
inline void ThrowTypeError(const char* errmsg) {
v8::Isolate* isolate = v8::Isolate::GetCurrent();
return ThrowTypeError(isolate, errmsg);
})
NODE_DEPRECATED("Use ThrowRangeError(isolate)",
inline void ThrowRangeError(const char* errmsg) {
v8::Isolate* isolate = v8::Isolate::GetCurrent();
return ThrowRangeError(isolate, errmsg);
})
NODE_DEPRECATED("Use ThrowErrnoException(isolate)",
inline void ThrowErrnoException(int errorno,
const char* syscall = nullptr,
const char* message = nullptr,
const char* path = nullptr) {
v8::Isolate* isolate = v8::Isolate::GetCurrent();
return ThrowErrnoException(isolate, errorno, syscall, message, path);
})
NODE_DEPRECATED("Use ThrowUVException(isolate)",
inline void ThrowUVException(int errorno,
const char* syscall = nullptr,
const char* message = nullptr,
const char* path = nullptr) {
v8::Isolate* isolate = v8::Isolate::GetCurrent();
return ThrowUVException(isolate, errorno, syscall, message, path);
})
enum NodeInstanceType { MAIN, WORKER };
class NodeInstanceData {
public:
NodeInstanceData(NodeInstanceType node_instance_type,
uv_loop_t* event_loop,
int argc,
const char** argv,
int exec_argc,
const char** exec_argv,
bool use_debug_agent_flag)
: node_instance_type_(node_instance_type),
exit_code_(1),
event_loop_(event_loop),
argc_(argc),
argv_(argv),
exec_argc_(exec_argc),
exec_argv_(exec_argv),
use_debug_agent_flag_(use_debug_agent_flag) {
CHECK_NE(event_loop_, nullptr);
}
uv_loop_t* event_loop() const {
return event_loop_;
}
int exit_code() {
CHECK(is_main());
return exit_code_;
}
void set_exit_code(int exit_code) {
CHECK(is_main());
exit_code_ = exit_code;
}
bool is_main() {
return node_instance_type_ == MAIN;
}
bool is_worker() {
return node_instance_type_ == WORKER;
}
int argc() {
return argc_;
}
const char** argv() {
return argv_;
}
int exec_argc() {
return exec_argc_;
}
const char** exec_argv() {
return exec_argv_;
}
bool use_debug_agent() {
return is_main() && use_debug_agent_flag_;
}
private:
const NodeInstanceType node_instance_type_;
int exit_code_;
uv_loop_t* const event_loop_;
const int argc_;
const char** argv_;
const int exec_argc_;
const char** exec_argv_;
const bool use_debug_agent_flag_;
DISALLOW_COPY_AND_ASSIGN(NodeInstanceData);
};
namespace Buffer {
v8::MaybeLocal<v8::Object> Copy(Environment* env, const char* data, size_t len);
v8::MaybeLocal<v8::Object> New(Environment* env, size_t size);
// Takes ownership of |data|.
v8::MaybeLocal<v8::Object> New(Environment* env,
char* data,
size_t length,
void (*callback)(char* data, void* hint),
void* hint);
// Takes ownership of |data|. Must allocate |data| with malloc() or realloc()
// because ArrayBufferAllocator::Free() deallocates it again with free().
// Mixing operator new and free() is undefined behavior so don't do that.
v8::MaybeLocal<v8::Object> New(Environment* env, char* data, size_t length);
} // namespace Buffer
} // namespace node
#endif // SRC_NODE_INTERNALS_H_