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env.h
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env.h
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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_ENV_H_
#define SRC_ENV_H_
#if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#include "aliased_buffer.h"
#include "ares.h"
#if HAVE_INSPECTOR
#include "inspector_agent.h"
#endif
#include "handle_wrap.h"
#include "req-wrap.h"
#include "util.h"
#include "uv.h"
#include "v8.h"
#include "node.h"
#include "node_http2_state.h"
#include <list>
#include <stdint.h>
#include <vector>
#include <unordered_map>
#include <unordered_set>
struct nghttp2_rcbuf;
namespace node {
namespace performance {
class performance_state;
}
namespace loader {
class ModuleWrap;
}
// Pick an index that's hopefully out of the way when we're embedded inside
// another application. Performance-wise or memory-wise it doesn't matter:
// Context::SetAlignedPointerInEmbedderData() is backed by a FixedArray,
// worst case we pay a one-time penalty for resizing the array.
#ifndef NODE_CONTEXT_EMBEDDER_DATA_INDEX
#define NODE_CONTEXT_EMBEDDER_DATA_INDEX 32
#endif
// The number of items passed to push_values_to_array_function has diminishing
// returns around 8. This should be used at all call sites using said function.
#ifndef NODE_PUSH_VAL_TO_ARRAY_MAX
#define NODE_PUSH_VAL_TO_ARRAY_MAX 8
#endif
// PER_ISOLATE_* macros: We have a lot of per-isolate properties
// and adding and maintaining their getters and setters by hand would be
// difficult so let's make the preprocessor generate them for us.
//
// In each macro, `V` is expected to be the name of a macro or function which
// accepts the number of arguments provided in each tuple in the macro body,
// typically two. The named function will be invoked against each tuple.
//
// Make sure that any macro V defined for use with the PER_ISOLATE_* macros is
// undefined again after use.
// Private symbols are per-isolate primitives but Environment proxies them
// for the sake of convenience. Strings should be ASCII-only and have a
// "node:" prefix to avoid name clashes with third-party code.
#define PER_ISOLATE_PRIVATE_SYMBOL_PROPERTIES(V) \
V(alpn_buffer_private_symbol, "node:alpnBuffer") \
V(arrow_message_private_symbol, "node:arrowMessage") \
V(contextify_context_private_symbol, "node:contextify:context") \
V(contextify_global_private_symbol, "node:contextify:global") \
V(decorated_private_symbol, "node:decorated") \
V(npn_buffer_private_symbol, "node:npnBuffer") \
V(processed_private_symbol, "node:processed") \
V(selected_npn_buffer_private_symbol, "node:selectedNpnBuffer") \
V(domain_private_symbol, "node:domain") \
V(napi_env, "node:napi:env") \
V(napi_wrapper, "node:napi:wrapper") \
// Strings are per-isolate primitives but Environment proxies them
// for the sake of convenience. Strings should be ASCII-only.
#define PER_ISOLATE_STRING_PROPERTIES(V) \
V(address_string, "address") \
V(args_string, "args") \
V(async, "async") \
V(async_ids_stack_string, "async_ids_stack") \
V(buffer_string, "buffer") \
V(bytes_string, "bytes") \
V(bytes_parsed_string, "bytesParsed") \
V(bytes_read_string, "bytesRead") \
V(cached_data_string, "cachedData") \
V(cached_data_produced_string, "cachedDataProduced") \
V(cached_data_rejected_string, "cachedDataRejected") \
V(callback_string, "callback") \
V(change_string, "change") \
V(channel_string, "channel") \
V(chunks_sent_since_last_write_string, "chunksSentSinceLastWrite") \
V(constants_string, "constants") \
V(oncertcb_string, "oncertcb") \
V(onclose_string, "_onclose") \
V(code_string, "code") \
V(configurable_string, "configurable") \
V(cwd_string, "cwd") \
V(dest_string, "dest") \
V(destroy_string, "destroy") \
V(destroyed_string, "destroyed") \
V(detached_string, "detached") \
V(disposed_string, "_disposed") \
V(dns_a_string, "A") \
V(dns_aaaa_string, "AAAA") \
V(dns_cname_string, "CNAME") \
V(dns_mx_string, "MX") \
V(dns_naptr_string, "NAPTR") \
V(dns_ns_string, "NS") \
V(dns_ptr_string, "PTR") \
V(dns_soa_string, "SOA") \
V(dns_srv_string, "SRV") \
V(dns_txt_string, "TXT") \
V(domain_string, "domain") \
V(emit_string, "emit") \
V(emitting_top_level_domain_error_string, "_emittingTopLevelDomainError") \
V(exchange_string, "exchange") \
V(enumerable_string, "enumerable") \
V(idle_string, "idle") \
V(irq_string, "irq") \
V(enablepush_string, "enablePush") \
V(encoding_string, "encoding") \
V(enter_string, "enter") \
V(entries_string, "entries") \
V(env_pairs_string, "envPairs") \
V(errno_string, "errno") \
V(error_string, "error") \
V(events_string, "_events") \
V(exiting_string, "_exiting") \
V(exit_code_string, "exitCode") \
V(exit_string, "exit") \
V(expire_string, "expire") \
V(exponent_string, "exponent") \
V(exports_string, "exports") \
V(ext_key_usage_string, "ext_key_usage") \
V(external_stream_string, "_externalStream") \
V(family_string, "family") \
V(fatal_exception_string, "_fatalException") \
V(fd_string, "fd") \
V(file_string, "file") \
V(fingerprint_string, "fingerprint") \
V(flags_string, "flags") \
V(get_string, "get") \
V(get_data_clone_error_string, "_getDataCloneError") \
V(get_shared_array_buffer_id_string, "_getSharedArrayBufferId") \
V(gid_string, "gid") \
V(handle_string, "handle") \
V(heap_total_string, "heapTotal") \
V(heap_used_string, "heapUsed") \
V(homedir_string, "homedir") \
V(hostmaster_string, "hostmaster") \
V(id_string, "id") \
V(ignore_string, "ignore") \
V(immediate_callback_string, "_immediateCallback") \
V(infoaccess_string, "infoAccess") \
V(inherit_string, "inherit") \
V(input_string, "input") \
V(internal_string, "internal") \
V(ipv4_string, "IPv4") \
V(ipv6_string, "IPv6") \
V(isalive_string, "isAlive") \
V(isclosing_string, "isClosing") \
V(issuer_string, "issuer") \
V(issuercert_string, "issuerCertificate") \
V(kill_signal_string, "killSignal") \
V(length_string, "length") \
V(mac_string, "mac") \
V(main_string, "main") \
V(max_buffer_string, "maxBuffer") \
V(message_string, "message") \
V(minttl_string, "minttl") \
V(model_string, "model") \
V(modulus_string, "modulus") \
V(name_string, "name") \
V(netmask_string, "netmask") \
V(nice_string, "nice") \
V(nsname_string, "nsname") \
V(nexttick_string, "nextTick") \
V(ocsp_request_string, "OCSPRequest") \
V(onaltsvc_string, "onaltsvc") \
V(onchange_string, "onchange") \
V(onclienthello_string, "onclienthello") \
V(oncomplete_string, "oncomplete") \
V(onconnection_string, "onconnection") \
V(ondone_string, "ondone") \
V(onerror_string, "onerror") \
V(onexit_string, "onexit") \
V(onframeerror_string, "onframeerror") \
V(ongetpadding_string, "ongetpadding") \
V(onhandshakedone_string, "onhandshakedone") \
V(onhandshakestart_string, "onhandshakestart") \
V(onheaders_string, "onheaders") \
V(onmessage_string, "onmessage") \
V(onnewsession_string, "onnewsession") \
V(onnewsessiondone_string, "onnewsessiondone") \
V(onocspresponse_string, "onocspresponse") \
V(ongoawaydata_string, "ongoawaydata") \
V(onpriority_string, "onpriority") \
V(onread_string, "onread") \
V(onreadstart_string, "onreadstart") \
V(onreadstop_string, "onreadstop") \
V(onselect_string, "onselect") \
V(onsettings_string, "onsettings") \
V(onshutdown_string, "onshutdown") \
V(onsignal_string, "onsignal") \
V(onstop_string, "onstop") \
V(onstreamclose_string, "onstreamclose") \
V(ontrailers_string, "ontrailers") \
V(onwrite_string, "onwrite") \
V(openssl_error_stack, "opensslErrorStack") \
V(output_string, "output") \
V(order_string, "order") \
V(owner_string, "owner") \
V(parse_error_string, "Parse Error") \
V(path_string, "path") \
V(pbkdf2_error_string, "PBKDF2 Error") \
V(pid_string, "pid") \
V(pipe_string, "pipe") \
V(port_string, "port") \
V(preference_string, "preference") \
V(priority_string, "priority") \
V(produce_cached_data_string, "produceCachedData") \
V(raw_string, "raw") \
V(read_host_object_string, "_readHostObject") \
V(readable_string, "readable") \
V(received_shutdown_string, "receivedShutdown") \
V(refresh_string, "refresh") \
V(regexp_string, "regexp") \
V(rename_string, "rename") \
V(replacement_string, "replacement") \
V(retry_string, "retry") \
V(serial_string, "serial") \
V(scopeid_string, "scopeid") \
V(sent_shutdown_string, "sentShutdown") \
V(serial_number_string, "serialNumber") \
V(service_string, "service") \
V(servername_string, "servername") \
V(session_id_string, "sessionId") \
V(set_string, "set") \
V(shell_string, "shell") \
V(signal_string, "signal") \
V(size_string, "size") \
V(sni_context_err_string, "Invalid SNI context") \
V(sni_context_string, "sni_context") \
V(speed_string, "speed") \
V(stack_string, "stack") \
V(status_string, "status") \
V(stdio_string, "stdio") \
V(stream_string, "stream") \
V(subject_string, "subject") \
V(subjectaltname_string, "subjectaltname") \
V(sys_string, "sys") \
V(syscall_string, "syscall") \
V(tick_callback_string, "_tickCallback") \
V(tick_domain_cb_string, "_tickDomainCallback") \
V(ticketkeycallback_string, "onticketkeycallback") \
V(timeout_string, "timeout") \
V(times_string, "times") \
V(tls_ticket_string, "tlsTicket") \
V(ttl_string, "ttl") \
V(type_string, "type") \
V(uid_string, "uid") \
V(unknown_string, "<unknown>") \
V(user_string, "user") \
V(username_string, "username") \
V(valid_from_string, "valid_from") \
V(valid_to_string, "valid_to") \
V(value_string, "value") \
V(verify_error_string, "verifyError") \
V(version_string, "version") \
V(weight_string, "weight") \
V(windows_hide_string, "windowsHide") \
V(windows_verbatim_arguments_string, "windowsVerbatimArguments") \
V(wrap_string, "wrap") \
V(writable_string, "writable") \
V(write_host_object_string, "_writeHostObject") \
V(write_queue_size_string, "writeQueueSize") \
V(x_forwarded_string, "x-forwarded-for") \
V(zero_return_string, "ZERO_RETURN")
#define ENVIRONMENT_STRONG_PERSISTENT_PROPERTIES(V) \
V(as_external, v8::External) \
V(async_hooks_destroy_function, v8::Function) \
V(async_hooks_init_function, v8::Function) \
V(async_hooks_before_function, v8::Function) \
V(async_hooks_after_function, v8::Function) \
V(async_hooks_promise_resolve_function, v8::Function) \
V(async_hooks_binding, v8::Object) \
V(binding_cache_object, v8::Object) \
V(internal_binding_cache_object, v8::Object) \
V(buffer_prototype_object, v8::Object) \
V(context, v8::Context) \
V(domain_array, v8::Array) \
V(domains_stack_array, v8::Array) \
V(host_import_module_dynamically_callback, v8::Function) \
V(http2ping_constructor_template, v8::ObjectTemplate) \
V(http2stream_constructor_template, v8::ObjectTemplate) \
V(http2settings_constructor_template, v8::ObjectTemplate) \
V(inspector_console_api_object, v8::Object) \
V(module_load_list_array, v8::Array) \
V(pbkdf2_constructor_template, v8::ObjectTemplate) \
V(pipe_constructor_template, v8::FunctionTemplate) \
V(performance_entry_callback, v8::Function) \
V(performance_entry_template, v8::Function) \
V(process_object, v8::Object) \
V(promise_reject_function, v8::Function) \
V(promise_wrap_template, v8::ObjectTemplate) \
V(push_values_to_array_function, v8::Function) \
V(randombytes_constructor_template, v8::ObjectTemplate) \
V(script_context_constructor_template, v8::FunctionTemplate) \
V(script_data_constructor_function, v8::Function) \
V(secure_context_constructor_template, v8::FunctionTemplate) \
V(tcp_constructor_template, v8::FunctionTemplate) \
V(tick_callback_function, v8::Function) \
V(tls_wrap_constructor_function, v8::Function) \
V(tty_constructor_template, v8::FunctionTemplate) \
V(udp_constructor_function, v8::Function) \
V(vm_parsing_context_symbol, v8::Symbol) \
V(url_constructor_function, v8::Function) \
V(write_wrap_constructor_function, v8::Function) \
class Environment;
class IsolateData {
public:
IsolateData(v8::Isolate* isolate, uv_loop_t* event_loop,
MultiIsolatePlatform* platform = nullptr,
uint32_t* zero_fill_field = nullptr);
~IsolateData();
inline uv_loop_t* event_loop() const;
inline uint32_t* zero_fill_field() const;
inline MultiIsolatePlatform* platform() const;
#define VP(PropertyName, StringValue) V(v8::Private, PropertyName)
#define VS(PropertyName, StringValue) V(v8::String, PropertyName)
#define V(TypeName, PropertyName) \
inline v8::Local<TypeName> PropertyName(v8::Isolate* isolate) const;
PER_ISOLATE_PRIVATE_SYMBOL_PROPERTIES(VP)
PER_ISOLATE_STRING_PROPERTIES(VS)
#undef V
#undef VS
#undef VP
std::unordered_map<nghttp2_rcbuf*, v8::Eternal<v8::String>> http2_static_strs;
inline v8::Isolate* isolate() const;
private:
#define VP(PropertyName, StringValue) V(v8::Private, PropertyName)
#define VS(PropertyName, StringValue) V(v8::String, PropertyName)
#define V(TypeName, PropertyName) \
v8::Eternal<TypeName> PropertyName ## _;
PER_ISOLATE_PRIVATE_SYMBOL_PROPERTIES(VP)
PER_ISOLATE_STRING_PROPERTIES(VS)
#undef V
#undef VS
#undef VP
v8::Isolate* const isolate_;
uv_loop_t* const event_loop_;
uint32_t* const zero_fill_field_;
MultiIsolatePlatform* platform_;
DISALLOW_COPY_AND_ASSIGN(IsolateData);
};
class Environment {
public:
class AsyncHooks {
public:
// Reason for both UidFields and Fields are that one is stored as a double*
// and the other as a uint32_t*.
enum Fields {
kInit,
kBefore,
kAfter,
kDestroy,
kPromiseResolve,
kTotals,
kCheck,
kStackLength,
kFieldsCount,
};
enum UidFields {
kExecutionAsyncId,
kTriggerAsyncId,
kAsyncIdCounter,
kDefaultTriggerAsyncId,
kUidFieldsCount,
};
inline AliasedBuffer<uint32_t, v8::Uint32Array>& fields();
inline AliasedBuffer<double, v8::Float64Array>& async_id_fields();
inline AliasedBuffer<double, v8::Float64Array>& async_ids_stack();
inline v8::Local<v8::String> provider_string(int idx);
inline void force_checks();
inline Environment* env();
inline void push_async_ids(double async_id, double trigger_async_id);
inline bool pop_async_id(double async_id);
inline void clear_async_id_stack(); // Used in fatal exceptions.
// Used to set the kDefaultTriggerAsyncId in a scope. This is instead of
// passing the trigger_async_id along with other constructor arguments.
class DefaultTriggerAsyncIdScope {
public:
DefaultTriggerAsyncIdScope() = delete;
explicit DefaultTriggerAsyncIdScope(Environment* env,
double init_trigger_async_id);
explicit DefaultTriggerAsyncIdScope(AsyncWrap* async_wrap);
~DefaultTriggerAsyncIdScope();
private:
AliasedBuffer<double, v8::Float64Array> async_id_fields_ref_;
double old_default_trigger_async_id_;
DISALLOW_COPY_AND_ASSIGN(DefaultTriggerAsyncIdScope);
};
private:
friend class Environment; // So we can call the constructor.
inline AsyncHooks();
// Keep a list of all Persistent strings used for Provider types.
v8::Eternal<v8::String> providers_[AsyncWrap::PROVIDERS_LENGTH];
// Keep track of the environment copy itself.
Environment* env_;
// Stores the ids of the current execution context stack.
AliasedBuffer<double, v8::Float64Array> async_ids_stack_;
// Attached to a Uint32Array that tracks the number of active hooks for
// each type.
AliasedBuffer<uint32_t, v8::Uint32Array> fields_;
// Attached to a Float64Array that tracks the state of async resources.
AliasedBuffer<double, v8::Float64Array> async_id_fields_;
void grow_async_ids_stack();
DISALLOW_COPY_AND_ASSIGN(AsyncHooks);
};
class AsyncCallbackScope {
public:
AsyncCallbackScope() = delete;
explicit AsyncCallbackScope(Environment* env);
~AsyncCallbackScope();
inline bool in_makecallback() const;
private:
Environment* env_;
DISALLOW_COPY_AND_ASSIGN(AsyncCallbackScope);
};
class DomainFlag {
public:
inline uint32_t* fields();
inline int fields_count() const;
inline uint32_t count() const;
private:
friend class Environment; // So we can call the constructor.
inline DomainFlag();
enum Fields {
kCount,
kFieldsCount
};
uint32_t fields_[kFieldsCount];
DISALLOW_COPY_AND_ASSIGN(DomainFlag);
};
class TickInfo {
public:
inline uint32_t* fields();
inline int fields_count() const;
inline uint32_t index() const;
inline uint32_t length() const;
inline void set_index(uint32_t value);
private:
friend class Environment; // So we can call the constructor.
inline TickInfo();
enum Fields {
kIndex,
kLength,
kFieldsCount
};
uint32_t fields_[kFieldsCount];
DISALLOW_COPY_AND_ASSIGN(TickInfo);
};
typedef void (*HandleCleanupCb)(Environment* env,
uv_handle_t* handle,
void* arg);
class HandleCleanup {
private:
friend class Environment;
HandleCleanup(uv_handle_t* handle, HandleCleanupCb cb, void* arg)
: handle_(handle),
cb_(cb),
arg_(arg) {
}
uv_handle_t* handle_;
HandleCleanupCb cb_;
void* arg_;
ListNode<HandleCleanup> handle_cleanup_queue_;
};
static inline Environment* GetCurrent(v8::Isolate* isolate);
static inline Environment* GetCurrent(v8::Local<v8::Context> context);
static inline Environment* GetCurrent(
const v8::FunctionCallbackInfo<v8::Value>& info);
template <typename T>
static inline Environment* GetCurrent(
const v8::PropertyCallbackInfo<T>& info);
Environment(IsolateData* isolate_data, v8::Local<v8::Context> context);
~Environment();
void Start(int argc,
const char* const* argv,
int exec_argc,
const char* const* exec_argv,
bool start_profiler_idle_notifier);
void AssignToContext(v8::Local<v8::Context> context);
void CleanupHandles();
void StartProfilerIdleNotifier();
void StopProfilerIdleNotifier();
inline v8::Isolate* isolate() const;
inline uv_loop_t* event_loop() const;
inline bool in_domain() const;
inline uint32_t watched_providers() const;
static inline Environment* from_immediate_check_handle(uv_check_t* handle);
inline uv_check_t* immediate_check_handle();
inline uv_idle_t* immediate_idle_handle();
// Register clean-up cb to be called on environment destruction.
inline void RegisterHandleCleanup(uv_handle_t* handle,
HandleCleanupCb cb,
void *arg);
inline void FinishHandleCleanup(uv_handle_t* handle);
inline AsyncHooks* async_hooks();
inline DomainFlag* domain_flag();
inline TickInfo* tick_info();
inline uint64_t timer_base() const;
inline IsolateData* isolate_data() const;
inline bool using_domains() const;
inline void set_using_domains(bool value);
inline bool printed_error() const;
inline void set_printed_error(bool value);
void PrintSyncTrace() const;
inline void set_trace_sync_io(bool value);
inline bool abort_on_uncaught_exception() const;
inline void set_abort_on_uncaught_exception(bool value);
// The necessary API for async_hooks.
inline double new_async_id();
inline double execution_async_id();
inline double trigger_async_id();
inline double get_default_trigger_async_id();
// List of id's that have been destroyed and need the destroy() cb called.
inline std::vector<double>* destroy_async_id_list();
std::unordered_multimap<int, loader::ModuleWrap*> module_map;
inline double* heap_statistics_buffer() const;
inline void set_heap_statistics_buffer(double* pointer);
inline double* heap_space_statistics_buffer() const;
inline void set_heap_space_statistics_buffer(double* pointer);
inline char* http_parser_buffer() const;
inline void set_http_parser_buffer(char* buffer);
inline http2::Http2State* http2_state() const;
inline void set_http2_state(std::unique_ptr<http2::Http2State> state);
inline double* fs_stats_field_array() const;
inline void set_fs_stats_field_array(double* fields);
inline AliasedBuffer<uint32_t, v8::Uint32Array>& scheduled_immediate_count();
inline performance::performance_state* performance_state();
inline std::unordered_map<std::string, uint64_t>* performance_marks();
inline void ThrowError(const char* errmsg);
inline void ThrowTypeError(const char* errmsg);
inline void ThrowRangeError(const char* errmsg);
inline void ThrowErrnoException(int errorno,
const char* syscall = nullptr,
const char* message = nullptr,
const char* path = nullptr);
inline void ThrowUVException(int errorno,
const char* syscall = nullptr,
const char* message = nullptr,
const char* path = nullptr,
const char* dest = nullptr);
inline v8::Local<v8::FunctionTemplate>
NewFunctionTemplate(v8::FunctionCallback callback,
v8::Local<v8::Signature> signature =
v8::Local<v8::Signature>());
// Convenience methods for NewFunctionTemplate().
inline void SetMethod(v8::Local<v8::Object> that,
const char* name,
v8::FunctionCallback callback);
inline void SetProtoMethod(v8::Local<v8::FunctionTemplate> that,
const char* name,
v8::FunctionCallback callback);
inline void SetTemplateMethod(v8::Local<v8::FunctionTemplate> that,
const char* name,
v8::FunctionCallback callback);
void AtExit(void (*cb)(void* arg), void* arg);
void RunAtExitCallbacks();
// Strings and private symbols are shared across shared contexts
// The getters simply proxy to the per-isolate primitive.
#define VP(PropertyName, StringValue) V(v8::Private, PropertyName)
#define VS(PropertyName, StringValue) V(v8::String, PropertyName)
#define V(TypeName, PropertyName) \
inline v8::Local<TypeName> PropertyName() const;
PER_ISOLATE_PRIVATE_SYMBOL_PROPERTIES(VP)
PER_ISOLATE_STRING_PROPERTIES(VS)
#undef V
#undef VS
#undef VP
#define V(PropertyName, TypeName) \
inline v8::Local<TypeName> PropertyName() const; \
inline void set_ ## PropertyName(v8::Local<TypeName> value);
ENVIRONMENT_STRONG_PERSISTENT_PROPERTIES(V)
#undef V
#if HAVE_INSPECTOR
inline inspector::Agent* inspector_agent() const {
return inspector_agent_.get();
}
#endif
typedef ListHead<HandleWrap, &HandleWrap::handle_wrap_queue_> HandleWrapQueue;
typedef ListHead<ReqWrap<uv_req_t>, &ReqWrap<uv_req_t>::req_wrap_queue_>
ReqWrapQueue;
inline HandleWrapQueue* handle_wrap_queue() { return &handle_wrap_queue_; }
inline ReqWrapQueue* req_wrap_queue() { return &req_wrap_queue_; }
static const int kContextEmbedderDataIndex = NODE_CONTEXT_EMBEDDER_DATA_INDEX;
void AddPromiseHook(promise_hook_func fn, void* arg);
bool RemovePromiseHook(promise_hook_func fn, void* arg);
typedef void (*native_immediate_callback)(Environment* env, void* data);
// cb will be called as cb(env, data) on the next event loop iteration.
// obj will be kept alive between now and after the callback has run.
inline void SetImmediate(native_immediate_callback cb,
void* data,
v8::Local<v8::Object> obj = v8::Local<v8::Object>());
// This needs to be available for the JS-land setImmediate().
void ActivateImmediateCheck();
static inline Environment* ForAsyncHooks(AsyncHooks* hooks);
inline void AddCleanupHook(void (*fn)(void*), void* arg);
inline void RemoveCleanupHook(void (*fn)(void*), void* arg);
void RunCleanup();
private:
inline void ThrowError(v8::Local<v8::Value> (*fun)(v8::Local<v8::String>),
const char* errmsg);
v8::Isolate* const isolate_;
IsolateData* const isolate_data_;
uv_check_t immediate_check_handle_;
uv_idle_t immediate_idle_handle_;
uv_prepare_t idle_prepare_handle_;
uv_check_t idle_check_handle_;
AsyncHooks async_hooks_;
DomainFlag domain_flag_;
TickInfo tick_info_;
const uint64_t timer_base_;
bool using_domains_;
bool printed_error_;
bool trace_sync_io_;
bool abort_on_uncaught_exception_;
size_t makecallback_cntr_;
std::vector<double> destroy_async_id_list_;
AliasedBuffer<uint32_t, v8::Uint32Array> scheduled_immediate_count_;
std::unique_ptr<performance::performance_state> performance_state_;
std::unordered_map<std::string, uint64_t> performance_marks_;
#if HAVE_INSPECTOR
std::unique_ptr<inspector::Agent> inspector_agent_;
#endif
// handle_wrap_queue_ and req_wrap_queue_ needs to be at a fixed offset from
// the start of the class because it is used by
// src/node_postmortem_metadata.cc to calculate offsets and generate debug
// symbols for Environment, which assumes that the position of members in
// memory are predictable. For more information please refer to
// `doc/guides/node-postmortem-support.md`
friend int GenDebugSymbols();
HandleWrapQueue handle_wrap_queue_;
ReqWrapQueue req_wrap_queue_;
ListHead<HandleCleanup,
&HandleCleanup::handle_cleanup_queue_> handle_cleanup_queue_;
int handle_cleanup_waiting_;
double* heap_statistics_buffer_ = nullptr;
double* heap_space_statistics_buffer_ = nullptr;
char* http_parser_buffer_;
std::unique_ptr<http2::Http2State> http2_state_;
double* fs_stats_field_array_;
struct AtExitCallback {
void (*cb_)(void* arg);
void* arg_;
};
std::list<AtExitCallback> at_exit_functions_;
struct PromiseHookCallback {
promise_hook_func cb_;
void* arg_;
size_t enable_count_;
};
std::vector<PromiseHookCallback> promise_hooks_;
struct NativeImmediateCallback {
native_immediate_callback cb_;
void* data_;
std::unique_ptr<v8::Persistent<v8::Object>> keep_alive_;
};
std::vector<NativeImmediateCallback> native_immediate_callbacks_;
void RunAndClearNativeImmediates();
static void CheckImmediate(uv_check_t* handle);
struct CleanupHookCallback {
void (*fn_)(void*);
void* arg_;
// We keep track of the insertion order for these objects, so that we can
// call the callbacks in reverse order when we are cleaning up.
uint64_t insertion_order_counter_;
// Only hashes `arg_`, since that is usually enough to identify the hook.
struct Hash {
inline size_t operator()(const CleanupHookCallback& cb) const;
};
// Compares by `fn_` and `arg_` being equal.
struct Equal {
inline bool operator()(const CleanupHookCallback& a,
const CleanupHookCallback& b) const;
};
};
// Use an unordered_set, so that we have efficient insertion and removal.
std::unordered_set<CleanupHookCallback,
CleanupHookCallback::Hash,
CleanupHookCallback::Equal> cleanup_hooks_;
uint64_t cleanup_hook_counter_ = 0;
static void EnvPromiseHook(v8::PromiseHookType type,
v8::Local<v8::Promise> promise,
v8::Local<v8::Value> parent);
#define V(PropertyName, TypeName) \
v8::Persistent<TypeName> PropertyName ## _;
ENVIRONMENT_STRONG_PERSISTENT_PROPERTIES(V)
#undef V
DISALLOW_COPY_AND_ASSIGN(Environment);
};
} // namespace node
#endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
#endif // SRC_ENV_H_