GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: node.h Lines: 13 13 100.0 %
Date: 2021-09-18 04:12:33 Branches: 1 2 50.0 %

Line Branch Exec Source
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// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef SRC_NODE_H_
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#define SRC_NODE_H_
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#ifdef _WIN32
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# ifndef BUILDING_NODE_EXTENSION
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#  define NODE_EXTERN __declspec(dllexport)
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# else
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#  define NODE_EXTERN __declspec(dllimport)
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# endif
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#else
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# define NODE_EXTERN __attribute__((visibility("default")))
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#endif
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#ifdef BUILDING_NODE_EXTENSION
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# undef BUILDING_V8_SHARED
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# undef BUILDING_UV_SHARED
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# define USING_V8_SHARED 1
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# define USING_UV_SHARED 1
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#endif
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// This should be defined in make system.
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// See issue https://github.com/nodejs/node-v0.x-archive/issues/1236
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#if defined(__MINGW32__) || defined(_MSC_VER)
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#ifndef _WIN32_WINNT
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# define _WIN32_WINNT 0x0600  // Windows Server 2008
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#endif
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#ifndef NOMINMAX
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# define NOMINMAX
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#endif
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#endif
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#if defined(_MSC_VER)
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#define PATH_MAX MAX_PATH
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#endif
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#ifdef _WIN32
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# define SIGKILL 9
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#endif
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#include "v8.h"  // NOLINT(build/include_order)
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#include "v8-platform.h"  // NOLINT(build/include_order)
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#include "node_version.h"  // NODE_MODULE_VERSION
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#include <memory>
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#include <functional>
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// We cannot use __POSIX__ in this header because that's only defined when
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// building Node.js.
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#ifndef _WIN32
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#include <signal.h>
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#endif  // _WIN32
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#define NODE_MAKE_VERSION(major, minor, patch)                                \
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  ((major) * 0x1000 + (minor) * 0x100 + (patch))
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#ifdef __clang__
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# define NODE_CLANG_AT_LEAST(major, minor, patch)                             \
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  (NODE_MAKE_VERSION(major, minor, patch) <=                                  \
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      NODE_MAKE_VERSION(__clang_major__, __clang_minor__, __clang_patchlevel__))
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#else
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# define NODE_CLANG_AT_LEAST(major, minor, patch) (0)
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#endif
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#ifdef __GNUC__
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# define NODE_GNUC_AT_LEAST(major, minor, patch)                              \
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  (NODE_MAKE_VERSION(major, minor, patch) <=                                  \
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      NODE_MAKE_VERSION(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__))
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#else
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# define NODE_GNUC_AT_LEAST(major, minor, patch) (0)
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#endif
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#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
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# define NODE_DEPRECATED(message, declarator) declarator
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#else  // NODE_WANT_INTERNALS
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# if NODE_CLANG_AT_LEAST(2, 9, 0) || NODE_GNUC_AT_LEAST(4, 5, 0)
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#  define NODE_DEPRECATED(message, declarator)                                 \
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    __attribute__((deprecated(message))) declarator
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# elif defined(_MSC_VER)
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#  define NODE_DEPRECATED(message, declarator)                                 \
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    __declspec(deprecated) declarator
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# else
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#  define NODE_DEPRECATED(message, declarator) declarator
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# endif
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#endif
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// Forward-declare libuv loop
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struct uv_loop_s;
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struct napi_module;
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// Forward-declare these functions now to stop MSVS from becoming
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// terminally confused when it's done in node_internals.h
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namespace node {
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namespace tracing {
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class TracingController;
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}
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NODE_EXTERN v8::Local<v8::Value> ErrnoException(v8::Isolate* isolate,
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                                                int errorno,
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                                                const char* syscall = nullptr,
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                                                const char* message = nullptr,
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                                                const char* path = nullptr);
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NODE_EXTERN v8::Local<v8::Value> UVException(v8::Isolate* isolate,
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                                             int errorno,
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                                             const char* syscall = nullptr,
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                                             const char* message = nullptr,
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                                             const char* path = nullptr,
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                                             const char* dest = nullptr);
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NODE_DEPRECATED("Use ErrnoException(isolate, ...)",
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                inline v8::Local<v8::Value> ErrnoException(
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      int errorno,
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      const char* syscall = nullptr,
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      const char* message = nullptr,
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      const char* path = nullptr) {
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  return ErrnoException(v8::Isolate::GetCurrent(),
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                        errorno,
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                        syscall,
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                        message,
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                        path);
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})
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NODE_DEPRECATED("Use UVException(isolate, ...)",
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                inline v8::Local<v8::Value> UVException(int errorno,
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                                        const char* syscall = nullptr,
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                                        const char* message = nullptr,
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                                        const char* path = nullptr) {
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  return UVException(v8::Isolate::GetCurrent(),
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                     errorno,
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                     syscall,
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                     message,
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                     path);
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})
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/*
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 * These methods need to be called in a HandleScope.
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 *
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 * It is preferred that you use the `MakeCallback` overloads taking
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 * `async_context` arguments.
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 */
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NODE_DEPRECATED("Use MakeCallback(..., async_context)",
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                NODE_EXTERN v8::Local<v8::Value> MakeCallback(
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                    v8::Isolate* isolate,
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                    v8::Local<v8::Object> recv,
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                    const char* method,
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                    int argc,
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                    v8::Local<v8::Value>* argv));
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NODE_DEPRECATED("Use MakeCallback(..., async_context)",
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                NODE_EXTERN v8::Local<v8::Value> MakeCallback(
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                    v8::Isolate* isolate,
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                    v8::Local<v8::Object> recv,
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                    v8::Local<v8::String> symbol,
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                    int argc,
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                    v8::Local<v8::Value>* argv));
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NODE_DEPRECATED("Use MakeCallback(..., async_context)",
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                NODE_EXTERN v8::Local<v8::Value> MakeCallback(
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                    v8::Isolate* isolate,
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                    v8::Local<v8::Object> recv,
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                    v8::Local<v8::Function> callback,
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                    int argc,
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                    v8::Local<v8::Value>* argv));
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}  // namespace node
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#include <cassert>
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#include <cstdint>
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#ifndef NODE_STRINGIFY
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# define NODE_STRINGIFY(n) NODE_STRINGIFY_HELPER(n)
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# define NODE_STRINGIFY_HELPER(n) #n
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#endif
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#ifdef _WIN32
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#if !defined(_SSIZE_T_) && !defined(_SSIZE_T_DEFINED)
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typedef intptr_t ssize_t;
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# define _SSIZE_T_
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# define _SSIZE_T_DEFINED
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#endif
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#else  // !_WIN32
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# include <sys/types.h>  // size_t, ssize_t
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#endif  // _WIN32
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namespace node {
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class IsolateData;
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class Environment;
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// TODO(addaleax): Officially deprecate this and replace it with something
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// better suited for a public embedder API.
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NODE_EXTERN int Start(int argc, char* argv[]);
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// Tear down Node.js while it is running (there are active handles
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// in the loop and / or actively executing JavaScript code).
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NODE_EXTERN int Stop(Environment* env);
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// Set up per-process state needed to run Node.js. This will consume arguments
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// from argv, fill exec_argv, and possibly add errors resulting from parsing
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// the arguments to `errors`. The return value is a suggested exit code for the
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// program; If it is 0, then initializing Node.js succeeded.
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NODE_EXTERN int InitializeNodeWithArgs(std::vector<std::string>* argv,
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                                       std::vector<std::string>* exec_argv,
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                                       std::vector<std::string>* errors);
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enum OptionEnvvarSettings {
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  kAllowedInEnvironment,
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  kDisallowedInEnvironment
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};
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NODE_EXTERN int ProcessGlobalArgs(std::vector<std::string>* args,
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                      std::vector<std::string>* exec_args,
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                      std::vector<std::string>* errors,
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                      OptionEnvvarSettings settings);
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class NodeArrayBufferAllocator;
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// An ArrayBuffer::Allocator class with some Node.js-specific tweaks. If you do
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// not have to use another allocator, using this class is recommended:
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// - It supports Buffer.allocUnsafe() and Buffer.allocUnsafeSlow() with
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//   uninitialized memory.
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// - It supports transferring, rather than copying, ArrayBuffers when using
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//   MessagePorts.
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class NODE_EXTERN ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
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 public:
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  // If `always_debug` is true, create an ArrayBuffer::Allocator instance
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  // that performs additional integrity checks (e.g. make sure that only memory
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  // that was allocated by the it is also freed by it).
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  // This can also be set using the --debug-arraybuffer-allocations flag.
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  static std::unique_ptr<ArrayBufferAllocator> Create(
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      bool always_debug = false);
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 private:
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  virtual NodeArrayBufferAllocator* GetImpl() = 0;
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  friend class IsolateData;
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};
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// Legacy equivalents for ArrayBufferAllocator::Create().
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NODE_EXTERN ArrayBufferAllocator* CreateArrayBufferAllocator();
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NODE_EXTERN void FreeArrayBufferAllocator(ArrayBufferAllocator* allocator);
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class NODE_EXTERN IsolatePlatformDelegate {
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 public:
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  virtual std::shared_ptr<v8::TaskRunner> GetForegroundTaskRunner() = 0;
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  virtual bool IdleTasksEnabled() = 0;
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};
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class NODE_EXTERN MultiIsolatePlatform : public v8::Platform {
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 public:
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  ~MultiIsolatePlatform() override = default;
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  // Returns true if work was dispatched or executed. New tasks that are
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  // posted during flushing of the queue are postponed until the next
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  // flushing.
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  virtual bool FlushForegroundTasks(v8::Isolate* isolate) = 0;
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  virtual void DrainTasks(v8::Isolate* isolate) = 0;
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  // This needs to be called between the calls to `Isolate::Allocate()` and
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  // `Isolate::Initialize()`, so that initialization can already start
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  // using the platform.
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  // When using `NewIsolate()`, this is taken care of by that function.
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  // This function may only be called once per `Isolate`.
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  virtual void RegisterIsolate(v8::Isolate* isolate,
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                               struct uv_loop_s* loop) = 0;
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  // This method can be used when an application handles task scheduling on its
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  // own through `IsolatePlatformDelegate`. Upon registering an isolate with
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  // this overload any other method in this class with the exception of
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  // `UnregisterIsolate` *must not* be used on that isolate.
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  virtual void RegisterIsolate(v8::Isolate* isolate,
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                               IsolatePlatformDelegate* delegate) = 0;
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  // This function may only be called once per `Isolate`, and discard any
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  // pending delayed tasks scheduled for that isolate.
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  // This needs to be called right before calling `Isolate::Dispose()`.
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  virtual void UnregisterIsolate(v8::Isolate* isolate) = 0;
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  // The platform should call the passed function once all state associated
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  // with the given isolate has been cleaned up. This can, but does not have to,
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  // happen asynchronously.
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  virtual void AddIsolateFinishedCallback(v8::Isolate* isolate,
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                                          void (*callback)(void*),
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                                          void* data) = 0;
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  static std::unique_ptr<MultiIsolatePlatform> Create(
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      int thread_pool_size,
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      v8::TracingController* tracing_controller = nullptr,
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      v8::PageAllocator* page_allocator = nullptr);
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};
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enum IsolateSettingsFlags {
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  MESSAGE_LISTENER_WITH_ERROR_LEVEL = 1 << 0,
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  DETAILED_SOURCE_POSITIONS_FOR_PROFILING = 1 << 1,
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  SHOULD_NOT_SET_PROMISE_REJECTION_CALLBACK = 1 << 2,
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  SHOULD_NOT_SET_PREPARE_STACK_TRACE_CALLBACK = 1 << 3
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};
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struct IsolateSettings {
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  uint64_t flags = MESSAGE_LISTENER_WITH_ERROR_LEVEL |
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      DETAILED_SOURCE_POSITIONS_FOR_PROFILING;
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  v8::MicrotasksPolicy policy = v8::MicrotasksPolicy::kExplicit;
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  // Error handling callbacks
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  v8::Isolate::AbortOnUncaughtExceptionCallback
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      should_abort_on_uncaught_exception_callback = nullptr;
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  v8::FatalErrorCallback fatal_error_callback = nullptr;
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  v8::PrepareStackTraceCallback prepare_stack_trace_callback = nullptr;
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  // Miscellaneous callbacks
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  v8::PromiseRejectCallback promise_reject_callback = nullptr;
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  v8::AllowWasmCodeGenerationCallback
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      allow_wasm_code_generation_callback = nullptr;
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};
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// Overriding IsolateSettings may produce unexpected behavior
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// in Node.js core functionality, so proceed at your own risk.
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NODE_EXTERN void SetIsolateUpForNode(v8::Isolate* isolate,
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                                     const IsolateSettings& settings);
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// Set a number of callbacks for the `isolate`, in particular the Node.js
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// uncaught exception listener.
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NODE_EXTERN void SetIsolateUpForNode(v8::Isolate* isolate);
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// Creates a new isolate with Node.js-specific settings.
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// This is a convenience method equivalent to using SetIsolateCreateParams(),
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// Isolate::Allocate(), MultiIsolatePlatform::RegisterIsolate(),
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// Isolate::Initialize(), and SetIsolateUpForNode().
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NODE_EXTERN v8::Isolate* NewIsolate(ArrayBufferAllocator* allocator,
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                                    struct uv_loop_s* event_loop,
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                                    MultiIsolatePlatform* platform = nullptr);
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NODE_EXTERN v8::Isolate* NewIsolate(
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    std::shared_ptr<ArrayBufferAllocator> allocator,
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    struct uv_loop_s* event_loop,
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    MultiIsolatePlatform* platform);
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// Creates a new context with Node.js-specific tweaks.
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NODE_EXTERN v8::Local<v8::Context> NewContext(
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    v8::Isolate* isolate,
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    v8::Local<v8::ObjectTemplate> object_template =
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        v8::Local<v8::ObjectTemplate>());
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// Runs Node.js-specific tweaks on an already constructed context
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// Return value indicates success of operation
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NODE_EXTERN v8::Maybe<bool> InitializeContext(v8::Local<v8::Context> context);
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// If `platform` is passed, it will be used to register new Worker instances.
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// It can be `nullptr`, in which case creating new Workers inside of
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// Environments that use this `IsolateData` will not work.
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NODE_EXTERN IsolateData* CreateIsolateData(
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    v8::Isolate* isolate,
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    struct uv_loop_s* loop,
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    MultiIsolatePlatform* platform = nullptr,
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    ArrayBufferAllocator* allocator = nullptr);
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NODE_EXTERN void FreeIsolateData(IsolateData* isolate_data);
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struct ThreadId {
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  uint64_t id = static_cast<uint64_t>(-1);
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};
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NODE_EXTERN ThreadId AllocateEnvironmentThreadId();
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namespace EnvironmentFlags {
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enum Flags : uint64_t {
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  kNoFlags = 0,
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  // Use the default behaviour for Node.js instances.
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  kDefaultFlags = 1 << 0,
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  // Controls whether this Environment is allowed to affect per-process state
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  // (e.g. cwd, process title, uid, etc.).
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  // This is set when using kDefaultFlags.
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  kOwnsProcessState = 1 << 1,
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  // Set if this Environment instance is associated with the global inspector
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  // handling code (i.e. listening on SIGUSR1).
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  // This is set when using kDefaultFlags.
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  kOwnsInspector = 1 << 2,
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  // Set if Node.js should not run its own esm loader. This is needed by some
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  // embedders, because it's possible for the Node.js esm loader to conflict
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  // with another one in an embedder environment, e.g. Blink's in Chromium.
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  kNoRegisterESMLoader = 1 << 3,
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  // Set this flag to make Node.js track "raw" file descriptors, i.e. managed
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  // by fs.open() and fs.close(), and close them during FreeEnvironment().
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  kTrackUnmanagedFds = 1 << 4,
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  // Set this flag to force hiding console windows when spawning child
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  // processes. This is usually used when embedding Node.js in GUI programs on
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  // Windows.
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  kHideConsoleWindows = 1 << 5,
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  // Set this flag to disable loading native addons via `process.dlopen`.
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  // This environment flag is especially important for worker threads
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  // so that a worker thread can't load a native addon even if `execArgv`
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  // is overwritten and `--no-addons` is not specified but was specified
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  // for this Environment instance.
416
  kNoNativeAddons = 1 << 6
417
};
418
}  // namespace EnvironmentFlags
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struct InspectorParentHandle {
421
  virtual ~InspectorParentHandle();
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};
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// TODO(addaleax): Maybe move per-Environment options parsing here.
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// Returns nullptr when the Environment cannot be created e.g. there are
426
// pending JavaScript exceptions.
427
NODE_EXTERN Environment* CreateEnvironment(
428
    IsolateData* isolate_data,
429
    v8::Local<v8::Context> context,
430
    const std::vector<std::string>& args,
431
    const std::vector<std::string>& exec_args,
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    EnvironmentFlags::Flags flags = EnvironmentFlags::kDefaultFlags,
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    ThreadId thread_id = {} /* allocates a thread id automatically */,
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    std::unique_ptr<InspectorParentHandle> inspector_parent_handle = {});
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// Returns a handle that can be passed to `LoadEnvironment()`, making the
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// child Environment accessible to the inspector as if it were a Node.js Worker.
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// `child_thread_id` can be created using `AllocateEnvironmentThreadId()`
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// and then later passed on to `CreateEnvironment()` to create the child
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// Environment, together with the inspector handle.
441
// This method should not be called while the parent Environment is active
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// on another thread.
443
NODE_EXTERN std::unique_ptr<InspectorParentHandle> GetInspectorParentHandle(
444
    Environment* parent_env,
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    ThreadId child_thread_id,
446
    const char* child_url);
447
448
struct StartExecutionCallbackInfo {
449
  v8::Local<v8::Object> process_object;
450
  v8::Local<v8::Function> native_require;
451
};
452
453
using StartExecutionCallback =
454
    std::function<v8::MaybeLocal<v8::Value>(const StartExecutionCallbackInfo&)>;
455
456
NODE_EXTERN v8::MaybeLocal<v8::Value> LoadEnvironment(
457
    Environment* env,
458
    StartExecutionCallback cb);
459
NODE_EXTERN v8::MaybeLocal<v8::Value> LoadEnvironment(
460
    Environment* env,
461
    const char* main_script_source_utf8);
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NODE_EXTERN void FreeEnvironment(Environment* env);
463
464
// Set a callback that is called when process.exit() is called from JS,
465
// overriding the default handler.
466
// It receives the Environment* instance and the exit code as arguments.
467
// This could e.g. call Stop(env); in order to terminate execution and stop
468
// the event loop.
469
// The default handler disposes of the global V8 platform instance, if one is
470
// being used, and calls exit().
471
NODE_EXTERN void SetProcessExitHandler(
472
    Environment* env,
473
    std::function<void(Environment*, int)>&& handler);
474
NODE_EXTERN void DefaultProcessExitHandler(Environment* env, int exit_code);
475
476
// This may return nullptr if context is not associated with a Node instance.
477
NODE_EXTERN Environment* GetCurrentEnvironment(v8::Local<v8::Context> context);
478
NODE_EXTERN IsolateData* GetEnvironmentIsolateData(Environment* env);
479
NODE_EXTERN ArrayBufferAllocator* GetArrayBufferAllocator(IsolateData* data);
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481
NODE_EXTERN void OnFatalError(const char* location, const char* message);
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NODE_EXTERN void PromiseRejectCallback(v8::PromiseRejectMessage message);
483
NODE_EXTERN bool AllowWasmCodeGenerationCallback(v8::Local<v8::Context> context,
484
                                            v8::Local<v8::String>);
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NODE_EXTERN bool ShouldAbortOnUncaughtException(v8::Isolate* isolate);
486
NODE_EXTERN v8::MaybeLocal<v8::Value> PrepareStackTraceCallback(
487
    v8::Local<v8::Context> context,
488
    v8::Local<v8::Value> exception,
489
    v8::Local<v8::Array> trace);
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491
// This returns the MultiIsolatePlatform used for an Environment or IsolateData
492
// instance, if one exists.
493
NODE_EXTERN MultiIsolatePlatform* GetMultiIsolatePlatform(Environment* env);
494
NODE_EXTERN MultiIsolatePlatform* GetMultiIsolatePlatform(IsolateData* env);
495
496
NODE_DEPRECATED("Use MultiIsolatePlatform::Create() instead",
497
    NODE_EXTERN MultiIsolatePlatform* CreatePlatform(
498
        int thread_pool_size,
499
        v8::TracingController* tracing_controller));
500
NODE_DEPRECATED("Use MultiIsolatePlatform::Create() instead",
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    NODE_EXTERN void FreePlatform(MultiIsolatePlatform* platform));
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// Get/set the currently active tracing controller. Using CreatePlatform()
504
// will implicitly set this by default. This is global and should be initialized
505
// along with the v8::Platform instance that is being used. `controller`
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// is allowed to be `nullptr`.
507
// This is used for tracing events from Node.js itself. V8 uses the tracing
508
// controller returned from the active `v8::Platform` instance.
509
NODE_EXTERN v8::TracingController* GetTracingController();
510
NODE_EXTERN void SetTracingController(v8::TracingController* controller);
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// Run `process.emit('beforeExit')` as it would usually happen when Node.js is
513
// run in standalone mode.
514
NODE_EXTERN v8::Maybe<bool> EmitProcessBeforeExit(Environment* env);
515
NODE_DEPRECATED("Use Maybe version (EmitProcessBeforeExit) instead",
516
    NODE_EXTERN void EmitBeforeExit(Environment* env));
517
// Run `process.emit('exit')` as it would usually happen when Node.js is run
518
// in standalone mode. The return value corresponds to the exit code.
519
NODE_EXTERN v8::Maybe<int> EmitProcessExit(Environment* env);
520
NODE_DEPRECATED("Use Maybe version (EmitProcessExit) instead",
521
    NODE_EXTERN int EmitExit(Environment* env));
522
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// Runs hooks added through `AtExit()`. This is part of `FreeEnvironment()`,
524
// so calling it manually is typically not necessary.
525
NODE_EXTERN void RunAtExit(Environment* env);
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// This may return nullptr if the current v8::Context is not associated
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// with a Node instance.
529
NODE_EXTERN struct uv_loop_s* GetCurrentEventLoop(v8::Isolate* isolate);
530
531
// Runs the main loop for a given Environment. This roughly performs the
532
// following steps:
533
// 1. Call uv_run() on the event loop until it is drained.
534
// 2. Call platform->DrainTasks() on the associated platform/isolate.
535
//   3. If the event loop is alive again, go to Step 1.
536
// 4. Call EmitProcessBeforeExit().
537
//   5. If the event loop is alive again, go to Step 1.
538
// 6. Call EmitProcessExit() and forward the return value.
539
// If at any point node::Stop() is called, the function will attempt to return
540
// as soon as possible, returning an empty `Maybe`.
541
// This function only works if `env` has an associated `MultiIsolatePlatform`.
542
NODE_EXTERN v8::Maybe<int> SpinEventLoop(Environment* env);
543
544
class NODE_EXTERN CommonEnvironmentSetup {
545
 public:
546
  ~CommonEnvironmentSetup();
547
548
  // Create a new CommonEnvironmentSetup, that is, a group of objects that
549
  // together form the typical setup for a single Node.js Environment instance.
550
  // If any error occurs, `*errors` will be populated and the returned pointer
551
  // will be empty.
552
  // env_args will be passed through as arguments to CreateEnvironment(), after
553
  // `isolate_data` and `context`.
554
  template <typename... EnvironmentArgs>
555
  static std::unique_ptr<CommonEnvironmentSetup> Create(
556
      MultiIsolatePlatform* platform,
557
      std::vector<std::string>* errors,
558
      EnvironmentArgs&&... env_args);
559
560
  struct uv_loop_s* event_loop() const;
561
  std::shared_ptr<ArrayBufferAllocator> array_buffer_allocator() const;
562
  v8::Isolate* isolate() const;
563
  IsolateData* isolate_data() const;
564
  Environment* env() const;
565
  v8::Local<v8::Context> context() const;
566
567
  CommonEnvironmentSetup(const CommonEnvironmentSetup&) = delete;
568
  CommonEnvironmentSetup& operator=(const CommonEnvironmentSetup&) = delete;
569
  CommonEnvironmentSetup(CommonEnvironmentSetup&&) = delete;
570
  CommonEnvironmentSetup& operator=(CommonEnvironmentSetup&&) = delete;
571
572
 private:
573
  struct Impl;
574
  Impl* impl_;
575
  CommonEnvironmentSetup(
576
      MultiIsolatePlatform*,
577
      std::vector<std::string>*,
578
      std::function<Environment*(const CommonEnvironmentSetup*)>);
579
};
580
581
// Implementation for CommonEnvironmentSetup::Create
582
template <typename... EnvironmentArgs>
583
7
std::unique_ptr<CommonEnvironmentSetup> CommonEnvironmentSetup::Create(
584
    MultiIsolatePlatform* platform,
585
    std::vector<std::string>* errors,
586
    EnvironmentArgs&&... env_args) {
587
7
  auto ret = std::unique_ptr<CommonEnvironmentSetup>(new CommonEnvironmentSetup(
588
      platform, errors,
589
7
      [&](const CommonEnvironmentSetup* setup) -> Environment* {
590
21
        return CreateEnvironment(
591
            setup->isolate_data(), setup->context(),
592
14
            std::forward<EnvironmentArgs>(env_args)...);
593
      }));
594
7
  if (!errors->empty()) ret.reset();
595
7
  return ret;
596
}
597
598
/* Converts a unixtime to V8 Date */
599
NODE_DEPRECATED("Use v8::Date::New() directly",
600
                inline v8::Local<v8::Value> NODE_UNIXTIME_V8(double time) {
601
                  return v8::Date::New(
602
                             v8::Isolate::GetCurrent()->GetCurrentContext(),
603
                             1000 * time)
604
                      .ToLocalChecked();
605
                })
606
#define NODE_UNIXTIME_V8 node::NODE_UNIXTIME_V8
607
NODE_DEPRECATED("Use v8::Date::ValueOf() directly",
608
                inline double NODE_V8_UNIXTIME(v8::Local<v8::Date> date) {
609
  return date->ValueOf() / 1000;
610
})
611
#define NODE_V8_UNIXTIME node::NODE_V8_UNIXTIME
612
613
#define NODE_DEFINE_CONSTANT(target, constant)                                \
614
  do {                                                                        \
615
    v8::Isolate* isolate = target->GetIsolate();                              \
616
    v8::Local<v8::Context> context = isolate->GetCurrentContext();            \
617
    v8::Local<v8::String> constant_name =                                     \
618
        v8::String::NewFromUtf8(isolate, #constant,                           \
619
            v8::NewStringType::kInternalized).ToLocalChecked();               \
620
    v8::Local<v8::Number> constant_value =                                    \
621
        v8::Number::New(isolate, static_cast<double>(constant));              \
622
    v8::PropertyAttribute constant_attributes =                               \
623
        static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete);    \
624
    (target)->DefineOwnProperty(context,                                      \
625
                                constant_name,                                \
626
                                constant_value,                               \
627
                                constant_attributes).Check();                 \
628
  }                                                                           \
629
  while (0)
630
631
#define NODE_DEFINE_HIDDEN_CONSTANT(target, constant)                         \
632
  do {                                                                        \
633
    v8::Isolate* isolate = target->GetIsolate();                              \
634
    v8::Local<v8::Context> context = isolate->GetCurrentContext();            \
635
    v8::Local<v8::String> constant_name =                                     \
636
        v8::String::NewFromUtf8(isolate, #constant,                           \
637
                                v8::NewStringType::kInternalized)             \
638
                                  .ToLocalChecked();                          \
639
    v8::Local<v8::Number> constant_value =                                    \
640
        v8::Number::New(isolate, static_cast<double>(constant));              \
641
    v8::PropertyAttribute constant_attributes =                               \
642
        static_cast<v8::PropertyAttribute>(v8::ReadOnly |                     \
643
                                           v8::DontDelete |                   \
644
                                           v8::DontEnum);                     \
645
    (target)->DefineOwnProperty(context,                                      \
646
                                constant_name,                                \
647
                                constant_value,                               \
648
                                constant_attributes).Check();                 \
649
  }                                                                           \
650
  while (0)
651
652
// Used to be a macro, hence the uppercase name.
653
inline void NODE_SET_METHOD(v8::Local<v8::Template> recv,
654
                            const char* name,
655
                            v8::FunctionCallback callback) {
656
  v8::Isolate* isolate = v8::Isolate::GetCurrent();
657
  v8::HandleScope handle_scope(isolate);
658
  v8::Local<v8::FunctionTemplate> t = v8::FunctionTemplate::New(isolate,
659
                                                                callback);
660
  v8::Local<v8::String> fn_name = v8::String::NewFromUtf8(isolate, name,
661
      v8::NewStringType::kInternalized).ToLocalChecked();
662
  t->SetClassName(fn_name);
663
  recv->Set(fn_name, t);
664
}
665
666
// Used to be a macro, hence the uppercase name.
667
inline void NODE_SET_METHOD(v8::Local<v8::Object> recv,
668
                            const char* name,
669
                            v8::FunctionCallback callback) {
670
  v8::Isolate* isolate = v8::Isolate::GetCurrent();
671
  v8::HandleScope handle_scope(isolate);
672
  v8::Local<v8::Context> context = isolate->GetCurrentContext();
673
  v8::Local<v8::FunctionTemplate> t = v8::FunctionTemplate::New(isolate,
674
                                                                callback);
675
  v8::Local<v8::Function> fn = t->GetFunction(context).ToLocalChecked();
676
  v8::Local<v8::String> fn_name = v8::String::NewFromUtf8(isolate, name,
677
      v8::NewStringType::kInternalized).ToLocalChecked();
678
  fn->SetName(fn_name);
679
  recv->Set(context, fn_name, fn).Check();
680
}
681
#define NODE_SET_METHOD node::NODE_SET_METHOD
682
683
// Used to be a macro, hence the uppercase name.
684
// Not a template because it only makes sense for FunctionTemplates.
685
inline void NODE_SET_PROTOTYPE_METHOD(v8::Local<v8::FunctionTemplate> recv,
686
                                      const char* name,
687
                                      v8::FunctionCallback callback) {
688
  v8::Isolate* isolate = v8::Isolate::GetCurrent();
689
  v8::HandleScope handle_scope(isolate);
690
  v8::Local<v8::Signature> s = v8::Signature::New(isolate, recv);
691
  v8::Local<v8::FunctionTemplate> t =
692
      v8::FunctionTemplate::New(isolate, callback, v8::Local<v8::Value>(), s);
693
  v8::Local<v8::String> fn_name = v8::String::NewFromUtf8(isolate, name,
694
      v8::NewStringType::kInternalized).ToLocalChecked();
695
  t->SetClassName(fn_name);
696
  recv->PrototypeTemplate()->Set(fn_name, t);
697
}
698
#define NODE_SET_PROTOTYPE_METHOD node::NODE_SET_PROTOTYPE_METHOD
699
700
// BINARY is a deprecated alias of LATIN1.
701
// BASE64URL is not currently exposed to the JavaScript side.
702
enum encoding {
703
  ASCII,
704
  UTF8,
705
  BASE64,
706
  UCS2,
707
  BINARY,
708
  HEX,
709
  BUFFER,
710
  BASE64URL,
711
  LATIN1 = BINARY
712
};
713
714
NODE_EXTERN enum encoding ParseEncoding(
715
    v8::Isolate* isolate,
716
    v8::Local<v8::Value> encoding_v,
717
    enum encoding default_encoding = LATIN1);
718
719
NODE_EXTERN void FatalException(v8::Isolate* isolate,
720
                                const v8::TryCatch& try_catch);
721
722
NODE_EXTERN v8::Local<v8::Value> Encode(v8::Isolate* isolate,
723
                                        const char* buf,
724
                                        size_t len,
725
                                        enum encoding encoding = LATIN1);
726
727
// Warning: This reverses endianness on Big Endian platforms, even though the
728
// signature using uint16_t implies that it should not.
729
NODE_EXTERN v8::Local<v8::Value> Encode(v8::Isolate* isolate,
730
                                        const uint16_t* buf,
731
                                        size_t len);
732
733
// Returns -1 if the handle was not valid for decoding
734
NODE_EXTERN ssize_t DecodeBytes(v8::Isolate* isolate,
735
                                v8::Local<v8::Value>,
736
                                enum encoding encoding = LATIN1);
737
// returns bytes written.
738
NODE_EXTERN ssize_t DecodeWrite(v8::Isolate* isolate,
739
                                char* buf,
740
                                size_t buflen,
741
                                v8::Local<v8::Value>,
742
                                enum encoding encoding = LATIN1);
743
#ifdef _WIN32
744
NODE_EXTERN v8::Local<v8::Value> WinapiErrnoException(
745
    v8::Isolate* isolate,
746
    int errorno,
747
    const char* syscall = nullptr,
748
    const char* msg = "",
749
    const char* path = nullptr);
750
#endif
751
752
const char* signo_string(int errorno);
753
754
755
typedef void (*addon_register_func)(
756
    v8::Local<v8::Object> exports,
757
    v8::Local<v8::Value> module,
758
    void* priv);
759
760
typedef void (*addon_context_register_func)(
761
    v8::Local<v8::Object> exports,
762
    v8::Local<v8::Value> module,
763
    v8::Local<v8::Context> context,
764
    void* priv);
765
766
enum ModuleFlags {
767
  kLinked = 0x02
768
};
769
770
struct node_module {
771
  int nm_version;
772
  unsigned int nm_flags;
773
  void* nm_dso_handle;
774
  const char* nm_filename;
775
  node::addon_register_func nm_register_func;
776
  node::addon_context_register_func nm_context_register_func;
777
  const char* nm_modname;
778
  void* nm_priv;
779
  struct node_module* nm_link;
780
};
781
782
extern "C" NODE_EXTERN void node_module_register(void* mod);
783
784
#ifdef _WIN32
785
# define NODE_MODULE_EXPORT __declspec(dllexport)
786
#else
787
# define NODE_MODULE_EXPORT __attribute__((visibility("default")))
788
#endif
789
790
#ifdef NODE_SHARED_MODE
791
# define NODE_CTOR_PREFIX
792
#else
793
# define NODE_CTOR_PREFIX static
794
#endif
795
796
#if defined(_MSC_VER)
797
#pragma section(".CRT$XCU", read)
798
#define NODE_C_CTOR(fn)                                               \
799
  NODE_CTOR_PREFIX void __cdecl fn(void);                             \
800
  __declspec(dllexport, allocate(".CRT$XCU"))                         \
801
      void (__cdecl*fn ## _)(void) = fn;                              \
802
  NODE_CTOR_PREFIX void __cdecl fn(void)
803
#else
804
#define NODE_C_CTOR(fn)                                               \
805
  NODE_CTOR_PREFIX void fn(void) __attribute__((constructor));        \
806
  NODE_CTOR_PREFIX void fn(void)
807
#endif
808
809
#define NODE_MODULE_X(modname, regfunc, priv, flags)                  \
810
  extern "C" {                                                        \
811
    static node::node_module _module =                                \
812
    {                                                                 \
813
      NODE_MODULE_VERSION,                                            \
814
      flags,                                                          \
815
      NULL,  /* NOLINT (readability/null_usage) */                    \
816
      __FILE__,                                                       \
817
      (node::addon_register_func) (regfunc),                          \
818
      NULL,  /* NOLINT (readability/null_usage) */                    \
819
      NODE_STRINGIFY(modname),                                        \
820
      priv,                                                           \
821
      NULL   /* NOLINT (readability/null_usage) */                    \
822
    };                                                                \
823
    NODE_C_CTOR(_register_ ## modname) {                              \
824
      node_module_register(&_module);                                 \
825
    }                                                                 \
826
  }
827
828
#define NODE_MODULE_CONTEXT_AWARE_X(modname, regfunc, priv, flags)    \
829
  extern "C" {                                                        \
830
    static node::node_module _module =                                \
831
    {                                                                 \
832
      NODE_MODULE_VERSION,                                            \
833
      flags,                                                          \
834
      NULL,  /* NOLINT (readability/null_usage) */                    \
835
      __FILE__,                                                       \
836
      NULL,  /* NOLINT (readability/null_usage) */                    \
837
      (node::addon_context_register_func) (regfunc),                  \
838
      NODE_STRINGIFY(modname),                                        \
839
      priv,                                                           \
840
      NULL  /* NOLINT (readability/null_usage) */                     \
841
    };                                                                \
842
    NODE_C_CTOR(_register_ ## modname) {                              \
843
      node_module_register(&_module);                                 \
844
    }                                                                 \
845
  }
846
847
// Usage: `NODE_MODULE(NODE_GYP_MODULE_NAME, InitializerFunction)`
848
// If no NODE_MODULE is declared, Node.js looks for the well-known
849
// symbol `node_register_module_v${NODE_MODULE_VERSION}`.
850
#define NODE_MODULE(modname, regfunc)                                 \
851
  NODE_MODULE_X(modname, regfunc, NULL, 0)  // NOLINT (readability/null_usage)
852
853
#define NODE_MODULE_CONTEXT_AWARE(modname, regfunc)                   \
854
  /* NOLINTNEXTLINE (readability/null_usage) */                       \
855
  NODE_MODULE_CONTEXT_AWARE_X(modname, regfunc, NULL, 0)
856
857
// Embedders can use this type of binding for statically linked native bindings.
858
// It is used the same way addon bindings are used, except that linked bindings
859
// can be accessed through `process._linkedBinding(modname)`.
860
#define NODE_MODULE_LINKED(modname, regfunc)                               \
861
  /* NOLINTNEXTLINE (readability/null_usage) */                            \
862
  NODE_MODULE_CONTEXT_AWARE_X(modname, regfunc, NULL,                      \
863
                              node::ModuleFlags::kLinked)
864
865
/*
866
 * For backward compatibility in add-on modules.
867
 */
868
#define NODE_MODULE_DECL /* nothing */
869
870
#define NODE_MODULE_INITIALIZER_BASE node_register_module_v
871
872
#define NODE_MODULE_INITIALIZER_X(base, version)                      \
873
    NODE_MODULE_INITIALIZER_X_HELPER(base, version)
874
875
#define NODE_MODULE_INITIALIZER_X_HELPER(base, version) base##version
876
877
#define NODE_MODULE_INITIALIZER                                       \
878
  NODE_MODULE_INITIALIZER_X(NODE_MODULE_INITIALIZER_BASE,             \
879
      NODE_MODULE_VERSION)
880
881
#define NODE_MODULE_INIT()                                            \
882
  extern "C" NODE_MODULE_EXPORT void                                  \
883
  NODE_MODULE_INITIALIZER(v8::Local<v8::Object> exports,              \
884
                          v8::Local<v8::Value> module,                \
885
                          v8::Local<v8::Context> context);            \
886
  NODE_MODULE_CONTEXT_AWARE(NODE_GYP_MODULE_NAME,                     \
887
                            NODE_MODULE_INITIALIZER)                  \
888
  void NODE_MODULE_INITIALIZER(v8::Local<v8::Object> exports,         \
889
                               v8::Local<v8::Value> module,           \
890
                               v8::Local<v8::Context> context)
891
892
// Allows embedders to add a binding to the current Environment* that can be
893
// accessed through process._linkedBinding() in the target Environment and all
894
// Worker threads that it creates.
895
// In each variant, the registration function needs to be usable at least for
896
// the time during which the Environment exists.
897
NODE_EXTERN void AddLinkedBinding(Environment* env, const node_module& mod);
898
NODE_EXTERN void AddLinkedBinding(Environment* env,
899
                                  const struct napi_module& mod);
900
NODE_EXTERN void AddLinkedBinding(Environment* env,
901
                                  const char* name,
902
                                  addon_context_register_func fn,
903
                                  void* priv);
904
905
/* Registers a callback with the passed-in Environment instance. The callback
906
 * is called after the event loop exits, but before the VM is disposed.
907
 * Callbacks are run in reverse order of registration, i.e. newest first.
908
 */
909
NODE_EXTERN void AtExit(Environment* env,
910
                        void (*cb)(void* arg),
911
                        void* arg);
912
913
typedef double async_id;
914
struct async_context {
915
  ::node::async_id async_id;
916
  ::node::async_id trigger_async_id;
917
};
918
919
/* This is a lot like node::AtExit, except that the hooks added via this
920
 * function are run before the AtExit ones and will always be registered
921
 * for the current Environment instance.
922
 * These functions are safe to use in an addon supporting multiple
923
 * threads/isolates. */
924
NODE_EXTERN void AddEnvironmentCleanupHook(v8::Isolate* isolate,
925
                                           void (*fun)(void* arg),
926
                                           void* arg);
927
928
NODE_EXTERN void RemoveEnvironmentCleanupHook(v8::Isolate* isolate,
929
                                              void (*fun)(void* arg),
930
                                              void* arg);
931
932
/* These are async equivalents of the above. After the cleanup hook is invoked,
933
 * `cb(cbarg)` *must* be called, and attempting to remove the cleanup hook will
934
 * have no effect. */
935
struct ACHHandle;
936
struct NODE_EXTERN DeleteACHHandle { void operator()(ACHHandle*) const; };
937
typedef std::unique_ptr<ACHHandle, DeleteACHHandle> AsyncCleanupHookHandle;
938
939
/* This function is not intended to be used externally, it exists to aid in
940
 * keeping ABI compatibility between Node and Electron. */
941
NODE_EXTERN ACHHandle* AddEnvironmentCleanupHookInternal(
942
    v8::Isolate* isolate,
943
    void (*fun)(void* arg, void (*cb)(void*), void* cbarg),
944
    void* arg);
945
6
inline AsyncCleanupHookHandle AddEnvironmentCleanupHook(
946
    v8::Isolate* isolate,
947
    void (*fun)(void* arg, void (*cb)(void*), void* cbarg),
948
    void* arg) {
949
  return AsyncCleanupHookHandle(AddEnvironmentCleanupHookInternal(isolate, fun,
950
6
      arg));
951
}
952
953
/* This function is not intended to be used externally, it exists to aid in
954
 * keeping ABI compatibility between Node and Electron. */
955
NODE_EXTERN void RemoveEnvironmentCleanupHookInternal(ACHHandle* holder);
956
6
inline void RemoveEnvironmentCleanupHook(AsyncCleanupHookHandle holder) {
957
6
  RemoveEnvironmentCleanupHookInternal(holder.get());
958
6
}
959
960
/* Returns the id of the current execution context. If the return value is
961
 * zero then no execution has been set. This will happen if the user handles
962
 * I/O from native code. */
963
NODE_EXTERN async_id AsyncHooksGetExecutionAsyncId(v8::Isolate* isolate);
964
965
/* Return same value as async_hooks.triggerAsyncId(); */
966
NODE_EXTERN async_id AsyncHooksGetTriggerAsyncId(v8::Isolate* isolate);
967
968
/* If the native API doesn't inherit from the helper class then the callbacks
969
 * must be triggered manually. This triggers the init() callback. The return
970
 * value is the async id assigned to the resource.
971
 *
972
 * The `trigger_async_id` parameter should correspond to the resource which is
973
 * creating the new resource, which will usually be the return value of
974
 * `AsyncHooksGetTriggerAsyncId()`. */
975
NODE_EXTERN async_context EmitAsyncInit(v8::Isolate* isolate,
976
                                        v8::Local<v8::Object> resource,
977
                                        const char* name,
978
                                        async_id trigger_async_id = -1);
979
980
NODE_EXTERN async_context EmitAsyncInit(v8::Isolate* isolate,
981
                                        v8::Local<v8::Object> resource,
982
                                        v8::Local<v8::String> name,
983
                                        async_id trigger_async_id = -1);
984
985
/* Emit the destroy() callback. The overload taking an `Environment*` argument
986
 * should be used when the Isolate’s current Context is not associated with
987
 * a Node.js Environment, or when there is no current Context, for example
988
 * when calling this function during garbage collection. In that case, the
989
 * `Environment*` value should have been acquired previously, e.g. through
990
 * `GetCurrentEnvironment()`. */
991
NODE_EXTERN void EmitAsyncDestroy(v8::Isolate* isolate,
992
                                  async_context asyncContext);
993
NODE_EXTERN void EmitAsyncDestroy(Environment* env,
994
                                  async_context asyncContext);
995
996
class InternalCallbackScope;
997
998
/* This class works like `MakeCallback()` in that it sets up a specific
999
 * asyncContext as the current one and informs the async_hooks and domains
1000
 * modules that this context is currently active.
1001
 *
1002
 * `MakeCallback()` is a wrapper around this class as well as
1003
 * `Function::Call()`. Either one of these mechanisms needs to be used for
1004
 * top-level calls into JavaScript (i.e. without any existing JS stack).
1005
 *
1006
 * This object should be stack-allocated to ensure that it is contained in a
1007
 * valid HandleScope.
1008
 *
1009
 * Exceptions happening within this scope will be treated like uncaught
1010
 * exceptions. If this behaviour is undesirable, a new `v8::TryCatch` scope
1011
 * needs to be created inside of this scope.
1012
 */
1013
class NODE_EXTERN CallbackScope {
1014
 public:
1015
  CallbackScope(v8::Isolate* isolate,
1016
                v8::Local<v8::Object> resource,
1017
                async_context asyncContext);
1018
  CallbackScope(Environment* env,
1019
                v8::Local<v8::Object> resource,
1020
                async_context asyncContext);
1021
  ~CallbackScope();
1022
1023
  void operator=(const CallbackScope&) = delete;
1024
  void operator=(CallbackScope&&) = delete;
1025
  CallbackScope(const CallbackScope&) = delete;
1026
  CallbackScope(CallbackScope&&) = delete;
1027
1028
 private:
1029
  InternalCallbackScope* private_;
1030
  v8::TryCatch try_catch_;
1031
};
1032
1033
/* An API specific to emit before/after callbacks is unnecessary because
1034
 * MakeCallback will automatically call them for you.
1035
 *
1036
 * These methods may create handles on their own, so run them inside a
1037
 * HandleScope.
1038
 *
1039
 * `asyncId` and `triggerAsyncId` should correspond to the values returned by
1040
 * `EmitAsyncInit()` and `AsyncHooksGetTriggerAsyncId()`, respectively, when the
1041
 * invoking resource was created. If these values are unknown, 0 can be passed.
1042
 * */
1043
NODE_EXTERN
1044
v8::MaybeLocal<v8::Value> MakeCallback(v8::Isolate* isolate,
1045
                                       v8::Local<v8::Object> recv,
1046
                                       v8::Local<v8::Function> callback,
1047
                                       int argc,
1048
                                       v8::Local<v8::Value>* argv,
1049
                                       async_context asyncContext);
1050
NODE_EXTERN
1051
v8::MaybeLocal<v8::Value> MakeCallback(v8::Isolate* isolate,
1052
                                       v8::Local<v8::Object> recv,
1053
                                       const char* method,
1054
                                       int argc,
1055
                                       v8::Local<v8::Value>* argv,
1056
                                       async_context asyncContext);
1057
NODE_EXTERN
1058
v8::MaybeLocal<v8::Value> MakeCallback(v8::Isolate* isolate,
1059
                                       v8::Local<v8::Object> recv,
1060
                                       v8::Local<v8::String> symbol,
1061
                                       int argc,
1062
                                       v8::Local<v8::Value>* argv,
1063
                                       async_context asyncContext);
1064
1065
/* Helper class users can optionally inherit from. If
1066
 * `AsyncResource::MakeCallback()` is used, then all four callbacks will be
1067
 * called automatically. */
1068
class NODE_EXTERN AsyncResource {
1069
 public:
1070
  AsyncResource(v8::Isolate* isolate,
1071
                v8::Local<v8::Object> resource,
1072
                const char* name,
1073
                async_id trigger_async_id = -1);
1074
1075
  virtual ~AsyncResource();
1076
1077
  AsyncResource(const AsyncResource&) = delete;
1078
  void operator=(const AsyncResource&) = delete;
1079
1080
  v8::MaybeLocal<v8::Value> MakeCallback(
1081
      v8::Local<v8::Function> callback,
1082
      int argc,
1083
      v8::Local<v8::Value>* argv);
1084
1085
  v8::MaybeLocal<v8::Value> MakeCallback(
1086
      const char* method,
1087
      int argc,
1088
      v8::Local<v8::Value>* argv);
1089
1090
  v8::MaybeLocal<v8::Value> MakeCallback(
1091
      v8::Local<v8::String> symbol,
1092
      int argc,
1093
      v8::Local<v8::Value>* argv);
1094
1095
  v8::Local<v8::Object> get_resource();
1096
  async_id get_async_id() const;
1097
  async_id get_trigger_async_id() const;
1098
1099
 protected:
1100
  class NODE_EXTERN CallbackScope : public node::CallbackScope {
1101
   public:
1102
    explicit CallbackScope(AsyncResource* res);
1103
  };
1104
1105
 private:
1106
  Environment* env_;
1107
  v8::Global<v8::Object> resource_;
1108
  async_context async_context_;
1109
};
1110
1111
#ifndef _WIN32
1112
// Register a signal handler without interrupting any handlers that node
1113
// itself needs. This does override handlers registered through
1114
// process.on('SIG...', function() { ... }). The `reset_handler` flag indicates
1115
// whether the signal handler for the given signal should be reset to its
1116
// default value before executing the handler (i.e. it works like SA_RESETHAND).
1117
// The `reset_handler` flag is invalid when `signal` is SIGSEGV.
1118
NODE_EXTERN
1119
void RegisterSignalHandler(int signal,
1120
                           void (*handler)(int signal,
1121
                                           siginfo_t* info,
1122
                                           void* ucontext),
1123
                           bool reset_handler = false);
1124
#endif  // _WIN32
1125
1126
}  // namespace node
1127
1128
#endif  // SRC_NODE_H_