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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"
#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 fs {
class FileHandleReadWrap;
}
namespace performance {
class performance_state;
}
namespace tracing {
class AgentWriterHandle;
}
namespace worker {
class Worker;
}
namespace loader {
class ModuleWrap;
struct PackageConfig {
enum class Exists { Yes, No };
enum class IsValid { Yes, No };
enum class HasMain { Yes, No };
Exists exists;
IsValid is_valid;
HasMain has_main;
std::string main;
};
} // namespace loader
// 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(napi_env, "node:napi:env") \
V(napi_wrapper, "node:napi:wrapper") \
V(sab_lifetimepartner_symbol, "node:sharedArrayBufferLifetimePartner") \
// Symbols are per-isolate primitives but Environment proxies them
// for the sake of convenience.
#define PER_ISOLATE_SYMBOL_PROPERTIES(V) \
V(handle_onclose_symbol, "handle_onclose") \
V(owner_symbol, "owner") \
// 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(bytes_written_string, "bytesWritten") \
V(cached_data_string, "cachedData") \
V(cached_data_produced_string, "cachedDataProduced") \
V(cached_data_rejected_string, "cachedDataRejected") \
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(code_string, "code") \
V(cwd_string, "cwd") \
V(dest_string, "dest") \
V(destroyed_string, "destroyed") \
V(detached_string, "detached") \
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(duration_string, "duration") \
V(emit_warning_string, "emitWarning") \
V(exchange_string, "exchange") \
V(encoding_string, "encoding") \
V(entries_string, "entries") \
V(entry_type_string, "entryType") \
V(env_pairs_string, "envPairs") \
V(errno_string, "errno") \
V(error_string, "error") \
V(exit_code_string, "exitCode") \
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(fingerprint256_string, "fingerprint256") \
V(flags_string, "flags") \
V(fragment_string, "fragment") \
V(get_data_clone_error_string, "_getDataCloneError") \
V(get_shared_array_buffer_id_string, "_getSharedArrayBufferId") \
V(gid_string, "gid") \
V(handle_string, "handle") \
V(homedir_string, "homedir") \
V(host_string, "host") \
V(hostmaster_string, "hostmaster") \
V(ignore_string, "ignore") \
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(isclosing_string, "isClosing") \
V(issuer_string, "issuer") \
V(issuercert_string, "issuerCertificate") \
V(kill_signal_string, "killSignal") \
V(kind_string, "kind") \
V(mac_string, "mac") \
V(main_string, "main") \
V(max_buffer_string, "maxBuffer") \
V(message_string, "message") \
V(message_port_string, "messagePort") \
V(message_port_constructor_string, "MessagePort") \
V(minttl_string, "minttl") \
V(modulus_string, "modulus") \
V(name_string, "name") \
V(netmask_string, "netmask") \
V(nsname_string, "nsname") \
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(oninit_string, "oninit") \
V(onmessage_string, "onmessage") \
V(onnewsession_string, "onnewsession") \
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(onsettings_string, "onsettings") \
V(onshutdown_string, "onshutdown") \
V(onsignal_string, "onsignal") \
V(onstreamclose_string, "onstreamclose") \
V(ontrailers_string, "ontrailers") \
V(onunpipe_string, "onunpipe") \
V(onwrite_string, "onwrite") \
V(openssl_error_stack, "opensslErrorStack") \
V(output_string, "output") \
V(order_string, "order") \
V(parse_error_string, "Parse Error") \
V(password_string, "password") \
V(path_string, "path") \
V(pending_handle_string, "pendingHandle") \
V(pid_string, "pid") \
V(pipe_string, "pipe") \
V(pipe_target_string, "pipeTarget") \
V(pipe_source_string, "pipeSource") \
V(port_string, "port") \
V(port1_string, "port1") \
V(port2_string, "port2") \
V(preference_string, "preference") \
V(priority_string, "priority") \
V(promise_string, "promise") \
V(pubkey_string, "pubkey") \
V(query_string, "query") \
V(raw_string, "raw") \
V(read_host_object_string, "_readHostObject") \
V(readable_string, "readable") \
V(refresh_string, "refresh") \
V(regexp_string, "regexp") \
V(rename_string, "rename") \
V(replacement_string, "replacement") \
V(retry_string, "retry") \
V(scheme_string, "scheme") \
V(serial_string, "serial") \
V(scopeid_string, "scopeid") \
V(serial_number_string, "serialNumber") \
V(service_string, "service") \
V(servername_string, "servername") \
V(session_id_string, "sessionId") \
V(shell_string, "shell") \
V(signal_string, "signal") \
V(sink_string, "sink") \
V(size_string, "size") \
V(sni_context_err_string, "Invalid SNI context") \
V(sni_context_string, "sni_context") \
V(source_string, "source") \
V(stack_string, "stack") \
V(start_time_string, "startTime") \
V(status_string, "status") \
V(stdio_string, "stdio") \
V(subject_string, "subject") \
V(subjectaltname_string, "subjectaltname") \
V(syscall_string, "syscall") \
V(thread_id_string, "threadId") \
V(ticketkeycallback_string, "onticketkeycallback") \
V(timeout_string, "timeout") \
V(tls_ticket_string, "tlsTicket") \
V(ttl_string, "ttl") \
V(type_string, "type") \
V(uid_string, "uid") \
V(unknown_string, "<unknown>") \
V(url_string, "url") \
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_after_function, v8::Function) \
V(async_hooks_before_function, v8::Function) \
V(async_hooks_binding, v8::Object) \
V(async_hooks_destroy_function, v8::Function) \
V(async_hooks_init_function, v8::Function) \
V(async_hooks_promise_resolve_function, v8::Function) \
V(async_wrap_constructor_template, v8::FunctionTemplate) \
V(buffer_prototype_object, v8::Object) \
V(context, v8::Context) \
V(domain_callback, v8::Function) \
V(domexception_function, v8::Function) \
V(fdclose_constructor_template, v8::ObjectTemplate) \
V(fd_constructor_template, v8::ObjectTemplate) \
V(filehandlereadwrap_template, v8::ObjectTemplate) \
V(fsreqpromise_constructor_template, v8::ObjectTemplate) \
V(fs_use_promises_symbol, v8::Symbol) \
V(host_import_module_dynamically_callback, v8::Function) \
V(host_initialize_import_meta_object_callback, v8::Function) \
V(http2ping_constructor_template, v8::ObjectTemplate) \
V(http2settings_constructor_template, v8::ObjectTemplate) \
V(http2stream_constructor_template, v8::ObjectTemplate) \
V(immediate_callback_function, v8::Function) \
V(inspector_console_api_object, v8::Object) \
V(message_port, v8::Object) \
V(message_port_constructor_template, v8::FunctionTemplate) \
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_handled_function, v8::Function) \
V(promise_reject_unhandled_function, v8::Function) \
V(promise_wrap_template, v8::ObjectTemplate) \
V(push_values_to_array_function, v8::Function) \
V(sab_lifetimepartner_constructor_template, v8::FunctionTemplate) \
V(script_context_constructor_template, v8::FunctionTemplate) \
V(script_data_constructor_function, v8::Function) \
V(secure_context_constructor_template, v8::FunctionTemplate) \
V(shutdown_wrap_template, v8::ObjectTemplate) \
V(tcp_constructor_template, v8::FunctionTemplate) \
V(tick_callback_function, v8::Function) \
V(timers_callback_function, v8::Function) \
V(tls_wrap_constructor_function, v8::Function) \
V(trace_category_state_function, v8::Function) \
V(tty_constructor_template, v8::FunctionTemplate) \
V(udp_constructor_function, v8::Function) \
V(url_constructor_function, v8::Function) \
V(write_wrap_template, v8::ObjectTemplate)
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 VY(PropertyName, StringValue) V(v8::Symbol, 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_SYMBOL_PROPERTIES(VY)
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 VY(PropertyName, StringValue) V(v8::Symbol, 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_SYMBOL_PROPERTIES(VY)
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);
};
struct ContextInfo {
explicit ContextInfo(const std::string& name) : name(name) {}
const std::string name;
std::string origin;
bool is_default = false;
};
// Listing the AsyncWrap provider types first enables us to cast directly
// from a provider type to a debug category.
#define DEBUG_CATEGORY_NAMES(V) \
NODE_ASYNC_PROVIDER_TYPES(V) \
V(INSPECTOR_SERVER)
enum class DebugCategory {
#define V(name) name,
DEBUG_CATEGORY_NAMES(V)
#undef V
CATEGORY_COUNT
};
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 no_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();
private:
Environment* env_;
DISALLOW_COPY_AND_ASSIGN(AsyncCallbackScope);
};
inline size_t makecallback_depth() const;
class ImmediateInfo {
public:
inline AliasedBuffer<uint32_t, v8::Uint32Array>& fields();
inline uint32_t count() const;
inline uint32_t ref_count() const;
inline bool has_outstanding() const;
inline void count_inc(uint32_t increment);
inline void count_dec(uint32_t decrement);
inline void ref_count_inc(uint32_t increment);
inline void ref_count_dec(uint32_t decrement);
private:
friend class Environment; // So we can call the constructor.
inline explicit ImmediateInfo(v8::Isolate* isolate);
enum Fields {
kCount,
kRefCount,
kHasOutstanding,
kFieldsCount
};
AliasedBuffer<uint32_t, v8::Uint32Array> fields_;
DISALLOW_COPY_AND_ASSIGN(ImmediateInfo);
};
class TickInfo {
public:
inline AliasedBuffer<uint8_t, v8::Uint8Array>& fields();
inline bool has_scheduled() const;
inline bool has_promise_rejections() const;
inline void promise_rejections_toggle_on();
private:
friend class Environment; // So we can call the constructor.
inline explicit TickInfo(v8::Isolate* isolate);
enum Fields {
kHasScheduled,
kHasPromiseRejections,
kFieldsCount
};
AliasedBuffer<uint8_t, v8::Uint8Array> fields_;
DISALLOW_COPY_AND_ASSIGN(TickInfo);
};
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);
static uv_key_t thread_local_env;
static inline Environment* GetThreadLocalEnv();
Environment(IsolateData* isolate_data,
v8::Local<v8::Context> context,
tracing::AgentWriterHandle* tracing_agent_writer);
~Environment();
void Start(int argc,
const char* const* argv,
int exec_argc,
const char* const* exec_argv,
bool start_profiler_idle_notifier);
typedef void (*HandleCleanupCb)(Environment* env,
uv_handle_t* handle,
void* arg);
struct HandleCleanup {
uv_handle_t* handle_;
HandleCleanupCb cb_;
void* arg_;
};
void RegisterHandleCleanups();
void CleanupHandles();
void Exit(int code);
// Register clean-up cb to be called on environment destruction.
inline void RegisterHandleCleanup(uv_handle_t* handle,
HandleCleanupCb cb,
void* arg);
template <typename T, typename OnCloseCallback>
inline void CloseHandle(T* handle, OnCloseCallback callback);
inline void AssignToContext(v8::Local<v8::Context> context,
const ContextInfo& info);
void StartProfilerIdleNotifier();
void StopProfilerIdleNotifier();
inline bool profiler_idle_notifier_started() const;
inline v8::Isolate* isolate() const;
inline tracing::AgentWriterHandle* tracing_agent_writer() const;
inline uv_loop_t* event_loop() const;
inline uint32_t watched_providers() const;
static inline Environment* from_timer_handle(uv_timer_t* handle);
inline uv_timer_t* timer_handle();
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();
inline void IncreaseWaitingRequestCounter();
inline void DecreaseWaitingRequestCounter();
inline AsyncHooks* async_hooks();
inline ImmediateInfo* immediate_info();
inline TickInfo* tick_info();
inline uint64_t timer_base() const;
inline IsolateData* isolate_data() const;
inline bool printed_error() const;
inline void set_printed_error(bool value);
void PrintSyncTrace() const;
inline void set_trace_sync_io(bool value);
// This stores whether the --abort-on-uncaught-exception flag was passed
// to Node.
inline bool abort_on_uncaught_exception() const;
inline void set_abort_on_uncaught_exception(bool value);
// This is a pseudo-boolean that keeps track of whether an uncaught exception
// should abort the process or not if --abort-on-uncaught-exception was
// passed to Node. If the flag was not passed, it is ignored.
inline AliasedBuffer<uint32_t, v8::Uint32Array>&
should_abort_on_uncaught_toggle();
inline AliasedBuffer<uint8_t, v8::Uint8Array>& trace_category_state();
// 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;
std::unordered_map<std::string, const loader::PackageConfig>
package_json_cache;
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 bool http_parser_buffer_in_use() const;
inline void set_http_parser_buffer_in_use(bool in_use);
inline http2::Http2State* http2_state() const;
inline void set_http2_state(std::unique_ptr<http2::Http2State> state);
inline bool debug_enabled(DebugCategory category) const;
inline void set_debug_enabled(DebugCategory category, bool enabled);
void set_debug_categories(const std::string& cats, bool enabled);
inline AliasedBuffer<double, v8::Float64Array>* fs_stats_field_array();
inline AliasedBuffer<uint64_t, v8::BigUint64Array>*
fs_stats_field_bigint_array();
// stat fields contains twice the number of entries because `fs.StatWatcher`
// needs room to store data for *two* `fs.Stats` instances.
static const int kFsStatsFieldsLength = 14;
inline std::vector<std::unique_ptr<fs::FileHandleReadWrap>>&
file_handle_read_wrap_freelist();
inline performance::performance_state* performance_state();
inline std::unordered_map<std::string, uint64_t>* performance_marks();
void CollectExceptionInfo(v8::Local<v8::Value> context,
int errorno,
const char* syscall = nullptr,
const char* message = nullptr,
const char* path = nullptr);
void CollectUVExceptionInfo(v8::Local<v8::Value> context,
int errorno,
const char* syscall = nullptr,
const char* message = nullptr,
const char* path = nullptr,
const char* dest = nullptr);
// If this flag is set, calls into JS (if they would be observable
// from userland) must be avoided. This flag does not indicate whether
// calling into JS is allowed from a VM perspective at this point.
inline bool can_call_into_js() const;
inline void set_can_call_into_js(bool can_call_into_js);
inline bool is_main_thread() const;
inline uint64_t thread_id() const;
inline void set_thread_id(uint64_t id);
inline worker::Worker* worker_context() const;
inline void set_worker_context(worker::Worker* context);
inline void add_sub_worker_context(worker::Worker* context);
inline void remove_sub_worker_context(worker::Worker* context);
void stop_sub_worker_contexts();
inline bool is_stopping_worker() const;
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>(),
v8::ConstructorBehavior behavior =
v8::ConstructorBehavior::kAllow,
v8::SideEffectType side_effect =
v8::SideEffectType::kHasSideEffect);
// 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);
// Safe variants denote the function has no side effects.
inline void SetMethodNoSideEffect(v8::Local<v8::Object> that,
const char* name,
v8::FunctionCallback callback);
inline void SetProtoMethodNoSideEffect(v8::Local<v8::FunctionTemplate> that,
const char* name,
v8::FunctionCallback callback);
inline void SetTemplateMethodNoSideEffect(
v8::Local<v8::FunctionTemplate> that,
const char* name,
v8::FunctionCallback callback);
void BeforeExit(void (*cb)(void* arg), void* arg);
void RunBeforeExitCallbacks();
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 VY(PropertyName, StringValue) V(v8::Symbol, 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_SYMBOL_PROPERTIES(VY)
PER_ISOLATE_STRING_PROPERTIES(VS)
#undef V
#undef VS
#undef VY
#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_; }
void AddPromiseHook(promise_hook_func fn, void* arg);
bool RemovePromiseHook(promise_hook_func fn, void* arg);
inline bool EmitProcessEnvWarning() {
bool current_value = emit_env_nonstring_warning_;
emit_env_nonstring_warning_ = false;
return current_value;
}
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>());
inline void SetUnrefImmediate(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 ToggleImmediateRef(bool ref);
class TrackingTraceStateObserver :
public v8::TracingController::TraceStateObserver {
public:
explicit TrackingTraceStateObserver(Environment* env) : env_(env) {}
void OnTraceEnabled() override {
UpdateTraceCategoryState();
}
void OnTraceDisabled() override {
UpdateTraceCategoryState();
}
private:
void UpdateTraceCategoryState();
Environment* env_;
};
class ShouldNotAbortOnUncaughtScope {
public:
explicit inline ShouldNotAbortOnUncaughtScope(Environment* env);
inline void Close();
inline ~ShouldNotAbortOnUncaughtScope();
private:
Environment* env_;
};
inline bool inside_should_not_abort_on_uncaught_scope() const;
static inline Environment* ForAsyncHooks(AsyncHooks* hooks);
v8::Local<v8::Value> GetNow();
void ScheduleTimer(int64_t duration);
void ToggleTimerRef(bool ref);
inline void AddCleanupHook(void (*fn)(void*), void* arg);
inline void RemoveCleanupHook(void (*fn)(void*), void* arg);
void RunCleanup();
static void BuildEmbedderGraph(v8::Isolate* isolate,
v8::EmbedderGraph* graph,
void* data);
private:
inline void CreateImmediate(native_immediate_callback cb,
void* data,
v8::Local<v8::Object> obj,
bool ref);
inline void ThrowError(v8::Local<v8::Value> (*fun)(v8::Local<v8::String>),
const char* errmsg);
v8::Isolate* const isolate_;
IsolateData* const isolate_data_;
tracing::AgentWriterHandle* const tracing_agent_writer_;
uv_timer_t timer_handle_;
uv_check_t immediate_check_handle_;
uv_idle_t immediate_idle_handle_;
uv_prepare_t idle_prepare_handle_;
uv_check_t idle_check_handle_;
bool profiler_idle_notifier_started_ = false;
AsyncHooks async_hooks_;
ImmediateInfo immediate_info_;
TickInfo tick_info_;
const uint64_t timer_base_;
bool printed_error_;
bool trace_sync_io_;
bool abort_on_uncaught_exception_;
bool emit_env_nonstring_warning_;
size_t makecallback_cntr_;
std::vector<double> destroy_async_id_list_;
AliasedBuffer<uint32_t, v8::Uint32Array> should_abort_on_uncaught_toggle_;
int should_not_abort_scope_counter_ = 0;
// Attached to a Uint8Array that tracks the state of trace category
AliasedBuffer<uint8_t, v8::Uint8Array> trace_category_state_;
std::unique_ptr<TrackingTraceStateObserver> trace_state_observer_;
std::unique_ptr<performance::performance_state> performance_state_;
std::unordered_map<std::string, uint64_t> performance_marks_;
bool can_call_into_js_ = true;
uint64_t thread_id_ = 0;
std::unordered_set<worker::Worker*> sub_worker_contexts_;
static void* kNodeContextTagPtr;
static int const kNodeContextTag;
#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_;
std::list<HandleCleanup> handle_cleanup_queue_;
int handle_cleanup_waiting_ = 0;
int request_waiting_ = 0;
double* heap_statistics_buffer_ = nullptr;
double* heap_space_statistics_buffer_ = nullptr;
char* http_parser_buffer_;
bool http_parser_buffer_in_use_ = false;
std::unique_ptr<http2::Http2State> http2_state_;
bool debug_enabled_[static_cast<int>(DebugCategory::CATEGORY_COUNT)] = {0};
AliasedBuffer<double, v8::Float64Array> fs_stats_field_array_;
AliasedBuffer<uint64_t, v8::BigUint64Array> fs_stats_field_bigint_array_;
std::vector<std::unique_ptr<fs::FileHandleReadWrap>>
file_handle_read_wrap_freelist_;
worker::Worker* worker_context_ = nullptr;
static void RunTimers(uv_timer_t* handle);
struct ExitCallback {
void (*cb_)(void* arg);
void* arg_;
};
std::list<ExitCallback> before_exit_functions_;
std::list<ExitCallback> 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<Persistent<v8::Object>> keep_alive_;
bool refed_;
};
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_;