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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_
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#include "env-inl.h"
#include "node.h"
#include "node_binding.h"
#include "node_mutex.h"
#include "node_persistent.h"
#include "tracing/trace_event.h"
#include "util-inl.h"
#include "uv.h"
#include "v8.h"
#include <stdint.h>
#include <stdlib.h>
#include <string>
#include <vector>
// Custom constants used by both node_constants.cc and node_zlib.cc
#define Z_MIN_WINDOWBITS 8
#define Z_MAX_WINDOWBITS 15
#define Z_DEFAULT_WINDOWBITS 15
// Fewer than 64 bytes per chunk is not recommended.
// Technically it could work with as few as 8, but even 64 bytes
// is low. Usually a MB or more is best.
#define Z_MIN_CHUNK 64
#define Z_MAX_CHUNK std::numeric_limits<double>::infinity()
#define Z_DEFAULT_CHUNK (16 * 1024)
#define Z_MIN_MEMLEVEL 1
#define Z_MAX_MEMLEVEL 9
#define Z_DEFAULT_MEMLEVEL 8
#define Z_MIN_LEVEL -1
#define Z_MAX_LEVEL 9
#define Z_DEFAULT_LEVEL Z_DEFAULT_COMPRESSION
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::NewStringType::kNormal) \
.ToLocalChecked(); \
v8::Local<v8::String> constant_value = \
v8::String::NewFromUtf8(isolate, constant, v8::NewStringType::kNormal)\
.ToLocalChecked(); \
v8::PropertyAttribute constant_attributes = \
static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete); \
target->DefineOwnProperty(isolate->GetCurrentContext(), \
constant_name, \
constant_value, \
constant_attributes).FromJust(); \
} while (0)
namespace node {
namespace native_module {
class NativeModuleLoader;
}
extern Mutex process_mutex;
extern Mutex environ_mutex;
// Tells whether it is safe to call v8::Isolate::GetCurrent().
extern bool v8_initialized;
extern Mutex per_process_opts_mutex;
extern std::shared_ptr<PerProcessOptions> per_process_opts;
extern native_module::NativeModuleLoader per_process_loader;
// Forward declaration
class Environment;
// 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::Local<v8::Object>());
template <typename T, int (*F)(const typename T::HandleType*, sockaddr*, int*)>
void GetSockOrPeerName(const v8::FunctionCallbackInfo<v8::Value>& args) {
T* wrap;
ASSIGN_OR_RETURN_UNWRAP(&wrap,
args.Holder(),
args.GetReturnValue().Set(UV_EBADF));
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);
}
void SignalExit(int signo);
#ifdef __POSIX__
void RegisterSignalHandler(int signal,
void (*handler)(int signal),
bool reset_handler = false);
#endif
bool SafeGetenv(const char* key, std::string* text);
std::string GetHumanReadableProcessName();
void GetHumanReadableProcessName(char (*name)[1024]);
template <typename T, size_t N>
constexpr size_t arraysize(const T(&)[N]) { return N; }
#ifndef ROUND_UP
# define ROUND_UP(a, b) ((a) % (b) ? ((a) + (b)) - ((a) % (b)) : (a))
#endif
#ifdef __GNUC__
# define MUST_USE_RESULT __attribute__((warn_unused_result))
#else
# define MUST_USE_RESULT
#endif
class SlicedArguments {
public:
inline explicit SlicedArguments(
const v8::FunctionCallbackInfo<v8::Value>& args,
size_t start = 0);
inline size_t size() const { return size_; }
inline v8::Local<v8::Value>* data() { return data_; }
private:
size_t size_;
v8::Local<v8::Value>* data_;
v8::Local<v8::Value> fixed_[64];
std::vector<v8::Local<v8::Value>> dynamic_;
};
SlicedArguments::SlicedArguments(
const v8::FunctionCallbackInfo<v8::Value>& args,
size_t start) : size_(0), data_(fixed_) {
const size_t length = static_cast<size_t>(args.Length());
if (start >= length) return;
const size_t size = length - start;
if (size > arraysize(fixed_)) {
dynamic_.resize(size);
data_ = dynamic_.data();
}
for (size_t i = 0; i < size; ++i)
data_[i] = args[i + start];
size_ = size;
}
v8::Maybe<bool> ProcessEmitWarning(Environment* env, const char* fmt, ...);
v8::Maybe<bool> ProcessEmitDeprecationWarning(Environment* env,
const char* warning,
const char* deprecation_code);
void SetupBootstrapObject(Environment* env,
v8::Local<v8::Object> bootstrapper);
void SetupProcessObject(Environment* env,
const std::vector<std::string>& args,
const std::vector<std::string>& exec_args);
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;
}
class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
public:
inline uint32_t* zero_fill_field() { return &zero_fill_field_; }
virtual void* Allocate(size_t size); // Defined in src/node.cc
virtual void* AllocateUninitialized(size_t size)
{ return node::UncheckedMalloc(size); }
virtual void Free(void* data, size_t) { free(data); }
private:
uint32_t zero_fill_field_ = 1; // Boolean but exposed as uint32 to JS land.
};
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);
inline
v8::MaybeLocal<v8::Uint8Array> New(Environment* env,
v8::Local<v8::ArrayBuffer> ab,
size_t byte_offset,
size_t length) {
v8::Local<v8::Uint8Array> ui = v8::Uint8Array::New(ab, byte_offset, length);
v8::Maybe<bool> mb =
ui->SetPrototype(env->context(), env->buffer_prototype_object());
if (mb.IsNothing())
return v8::MaybeLocal<v8::Uint8Array>();
return ui;
}
// Construct a Buffer from a MaybeStackBuffer (and also its subclasses like
// Utf8Value and TwoByteValue).
// If |buf| is invalidated, an empty MaybeLocal is returned, and nothing is
// changed.
// If |buf| contains actual data, this method takes ownership of |buf|'s
// underlying buffer. However, |buf| itself can be reused even after this call,
// but its capacity, if increased through AllocateSufficientStorage, is not
// guaranteed to stay the same.
template <typename T>
static v8::MaybeLocal<v8::Object> New(Environment* env,
MaybeStackBuffer<T>* buf) {
v8::MaybeLocal<v8::Object> ret;
char* src = reinterpret_cast<char*>(buf->out());
const size_t len_in_bytes = buf->length() * sizeof(buf->out()[0]);
if (buf->IsAllocated())
ret = New(env, src, len_in_bytes);
else if (!buf->IsInvalidated())
ret = Copy(env, src, len_in_bytes);
if (ret.IsEmpty())
return ret;
if (buf->IsAllocated())
buf->Release();
return ret;
}
} // namespace Buffer
v8::MaybeLocal<v8::Value> InternalMakeCallback(
Environment* env,
v8::Local<v8::Object> recv,
const v8::Local<v8::Function> callback,
int argc,
v8::Local<v8::Value> argv[],
async_context asyncContext);
class InternalCallbackScope {
public:
// Tell the constructor whether its `object` parameter may be empty or not.
enum ResourceExpectation { kRequireResource, kAllowEmptyResource };
InternalCallbackScope(Environment* env,
v8::Local<v8::Object> object,
const async_context& asyncContext,
ResourceExpectation expect = kRequireResource);
// Utility that can be used by AsyncWrap classes.
explicit InternalCallbackScope(AsyncWrap* async_wrap);
~InternalCallbackScope();
void Close();
inline bool Failed() const { return failed_; }
inline void MarkAsFailed() { failed_ = true; }
private:
Environment* env_;
async_context async_context_;
v8::Local<v8::Object> object_;
Environment::AsyncCallbackScope callback_scope_;
bool failed_ = false;
bool pushed_ids_ = false;
bool closed_ = false;
};
class ThreadPoolWork {
public:
explicit inline ThreadPoolWork(Environment* env) : env_(env) {
CHECK_NOT_NULL(env);
}
inline virtual ~ThreadPoolWork() = default;
inline void ScheduleWork();
inline int CancelWork();
virtual void DoThreadPoolWork() = 0;
virtual void AfterThreadPoolWork(int status) = 0;
private:
Environment* env_;
uv_work_t work_req_;
};
void ThreadPoolWork::ScheduleWork() {
env_->IncreaseWaitingRequestCounter();
int status = uv_queue_work(
env_->event_loop(),
&work_req_,
[](uv_work_t* req) {
ThreadPoolWork* self = ContainerOf(&ThreadPoolWork::work_req_, req);
self->DoThreadPoolWork();
},
[](uv_work_t* req, int status) {
ThreadPoolWork* self = ContainerOf(&ThreadPoolWork::work_req_, req);
self->env_->DecreaseWaitingRequestCounter();
self->AfterThreadPoolWork(status);
});
CHECK_EQ(status, 0);
}
int ThreadPoolWork::CancelWork() {
return uv_cancel(reinterpret_cast<uv_req_t*>(&work_req_));
}
tracing::AgentWriterHandle* GetTracingAgentWriter();
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
# if ENOTEMPTY != EEXIST
ERRNO_CASE(ENOTEMPTY);
# endif
#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 "";
}
}
#define TRACING_CATEGORY_NODE "node"
#define TRACING_CATEGORY_NODE1(one) \
TRACING_CATEGORY_NODE "," \
TRACING_CATEGORY_NODE "." #one
#define TRACING_CATEGORY_NODE2(one, two) \
TRACING_CATEGORY_NODE "," \
TRACING_CATEGORY_NODE "." #one "," \
TRACING_CATEGORY_NODE "." #one "." #two
// Functions defined in node.cc that are exposed via the bootstrapper object
extern double prog_start_time;
extern const char* llhttp_version;
extern const char* http_parser_version;
void Abort(const v8::FunctionCallbackInfo<v8::Value>& args);
void Chdir(const v8::FunctionCallbackInfo<v8::Value>& args);
void CPUUsage(const v8::FunctionCallbackInfo<v8::Value>& args);
void Cwd(const v8::FunctionCallbackInfo<v8::Value>& args);
void GetActiveHandles(const v8::FunctionCallbackInfo<v8::Value>& args);
void GetActiveRequests(const v8::FunctionCallbackInfo<v8::Value>& args);
void Hrtime(const v8::FunctionCallbackInfo<v8::Value>& args);
void HrtimeBigInt(const v8::FunctionCallbackInfo<v8::Value>& args);
void Kill(const v8::FunctionCallbackInfo<v8::Value>& args);
void MemoryUsage(const v8::FunctionCallbackInfo<v8::Value>& args);
void RawDebug(const v8::FunctionCallbackInfo<v8::Value>& args);
void StartProfilerIdleNotifier(const v8::FunctionCallbackInfo<v8::Value>& args);
void StopProfilerIdleNotifier(const v8::FunctionCallbackInfo<v8::Value>& args);
void Umask(const v8::FunctionCallbackInfo<v8::Value>& args);
void Uptime(const v8::FunctionCallbackInfo<v8::Value>& args);
void EnvDeleter(v8::Local<v8::Name> property,
const v8::PropertyCallbackInfo<v8::Boolean>& info);
void EnvGetter(v8::Local<v8::Name> property,
const v8::PropertyCallbackInfo<v8::Value>& info);
void EnvSetter(v8::Local<v8::Name> property,
v8::Local<v8::Value> value,
const v8::PropertyCallbackInfo<v8::Value>& info);
void EnvQuery(v8::Local<v8::Name> property,
const v8::PropertyCallbackInfo<v8::Integer>& info);
void EnvEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info);
void DebugPortGetter(v8::Local<v8::Name> property,
const v8::PropertyCallbackInfo<v8::Value>& info);
void DebugPortSetter(v8::Local<v8::Name> property,
v8::Local<v8::Value> value,
const v8::PropertyCallbackInfo<void>& info);
void GetParentProcessId(v8::Local<v8::Name> property,
const v8::PropertyCallbackInfo<v8::Value>& info);
void ProcessTitleGetter(v8::Local<v8::Name> property,
const v8::PropertyCallbackInfo<v8::Value>& info);
void ProcessTitleSetter(v8::Local<v8::Name> property,
v8::Local<v8::Value> value,
const v8::PropertyCallbackInfo<void>& info);
#if defined(__POSIX__) && !defined(__ANDROID__) && !defined(__CloudABI__)
void SetGid(const v8::FunctionCallbackInfo<v8::Value>& args);
void SetEGid(const v8::FunctionCallbackInfo<v8::Value>& args);
void SetUid(const v8::FunctionCallbackInfo<v8::Value>& args);
void SetEUid(const v8::FunctionCallbackInfo<v8::Value>& args);
void SetGroups(const v8::FunctionCallbackInfo<v8::Value>& args);
void InitGroups(const v8::FunctionCallbackInfo<v8::Value>& args);
void GetUid(const v8::FunctionCallbackInfo<v8::Value>& args);
void GetGid(const v8::FunctionCallbackInfo<v8::Value>& args);
void GetEUid(const v8::FunctionCallbackInfo<v8::Value>& args);
void GetEGid(const v8::FunctionCallbackInfo<v8::Value>& args);
void GetGroups(const v8::FunctionCallbackInfo<v8::Value>& args);
#endif // __POSIX__ && !defined(__ANDROID__) && !defined(__CloudABI__)
void DefineZlibConstants(v8::Local<v8::Object> target);
} // namespace node
#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#endif // SRC_NODE_INTERNALS_H_
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