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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"
#if HAVE_INSPECTOR
#include "inspector_agent.h"
#include "inspector_profiler.h"
#endif
#include "callback_queue.h"
#include "cleanup_queue-inl.h"
#include "debug_utils.h"
#include "handle_wrap.h"
#include "node.h"
#include "node_binding.h"
#include "node_builtins.h"
#include "node_main_instance.h"
#include "node_options.h"
#include "node_perf_common.h"
#include "node_snapshotable.h"
#include "req_wrap.h"
#include "util.h"
#include "uv.h"
#include "v8.h"
#include <array>
#include <atomic>
#include <cstdint>
#include <functional>
#include <list>
#include <memory>
#include <ostream>
#include <set>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
namespace node {
namespace contextify {
class ContextifyScript;
class CompiledFnEntry;
}
namespace performance {
class PerformanceState;
}
namespace tracing {
class AgentWriterHandle;
}
#if HAVE_INSPECTOR
namespace profiler {
class V8CoverageConnection;
class V8CpuProfilerConnection;
class V8HeapProfilerConnection;
} // namespace profiler
namespace inspector {
class ParentInspectorHandle;
}
#endif // HAVE_INSPECTOR
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 };
enum class HasName { Yes, No };
enum PackageType : uint32_t { None = 0, CommonJS, Module };
const Exists exists;
const IsValid is_valid;
const HasMain has_main;
const std::string main;
const HasName has_name;
const std::string name;
const PackageType type;
v8::Global<v8::Value> exports;
};
} // namespace loader
enum class FsStatsOffset {
kDev = 0,
kMode,
kNlink,
kUid,
kGid,
kRdev,
kBlkSize,
kIno,
kSize,
kBlocks,
kATimeSec,
kATimeNsec,
kMTimeSec,
kMTimeNsec,
kCTimeSec,
kCTimeNsec,
kBirthTimeSec,
kBirthTimeNsec,
kFsStatsFieldsNumber
};
// Stat fields buffers contain twice the number of entries in an uv_stat_t
// because `fs.StatWatcher` needs room to store 2 `fs.Stats` instances.
constexpr size_t kFsStatsBufferLength =
static_cast<size_t>(FsStatsOffset::kFsStatsFieldsNumber) * 2;
// Disables zero-filling for ArrayBuffer allocations in this scope. This is
// similar to how we implement Buffer.allocUnsafe() in JS land.
class NoArrayBufferZeroFillScope {
public:
inline explicit NoArrayBufferZeroFillScope(IsolateData* isolate_data);
inline ~NoArrayBufferZeroFillScope();
private:
NodeArrayBufferAllocator* node_allocator_;
friend class Environment;
};
// 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_type_tag, "node:napi:type_tag") \
V(napi_wrapper, "node:napi:wrapper") \
V(untransferable_object_private_symbol, "node:untransferableObject") \
V(exiting_aliased_Uint32Array, "node:exiting_aliased_Uint32Array")
// Symbols are per-isolate primitives but Environment proxies them
// for the sake of convenience.
#define PER_ISOLATE_SYMBOL_PROPERTIES(V) \
V(async_id_symbol, "async_id_symbol") \
V(handle_onclose_symbol, "handle_onclose") \
V(no_message_symbol, "no_message_symbol") \
V(messaging_deserialize_symbol, "messaging_deserialize_symbol") \
V(messaging_transfer_symbol, "messaging_transfer_symbol") \
V(messaging_clone_symbol, "messaging_clone_symbol") \
V(messaging_transfer_list_symbol, "messaging_transfer_list_symbol") \
V(oninit_symbol, "oninit") \
V(owner_symbol, "owner_symbol") \
V(onpskexchange_symbol, "onpskexchange") \
V(resource_symbol, "resource_symbol") \
V(trigger_async_id_symbol, "trigger_async_id_symbol") \
// 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(ack_string, "ack") \
V(address_string, "address") \
V(aliases_string, "aliases") \
V(args_string, "args") \
V(asn1curve_string, "asn1Curve") \
V(async_ids_stack_string, "async_ids_stack") \
V(bits_string, "bits") \
V(block_list_string, "blockList") \
V(buffer_string, "buffer") \
V(bytes_parsed_string, "bytesParsed") \
V(bytes_read_string, "bytesRead") \
V(bytes_written_string, "bytesWritten") \
V(cached_data_produced_string, "cachedDataProduced") \
V(cached_data_rejected_string, "cachedDataRejected") \
V(cached_data_string, "cachedData") \
V(cache_key_string, "cacheKey") \
V(change_string, "change") \
V(channel_string, "channel") \
V(chunks_sent_since_last_write_string, "chunksSentSinceLastWrite") \
V(clone_unsupported_type_str, "Cannot transfer object of unsupported type.") \
V(code_string, "code") \
V(commonjs_string, "commonjs") \
V(config_string, "config") \
V(constants_string, "constants") \
V(crypto_dh_string, "dh") \
V(crypto_dsa_string, "dsa") \
V(crypto_ec_string, "ec") \
V(crypto_ed25519_string, "ed25519") \
V(crypto_ed448_string, "ed448") \
V(crypto_x25519_string, "x25519") \
V(crypto_x448_string, "x448") \
V(crypto_rsa_string, "rsa") \
V(crypto_rsa_pss_string, "rsa-pss") \
V(cwd_string, "cwd") \
V(data_string, "data") \
V(default_is_true_string, "defaultIsTrue") \
V(deserialize_info_string, "deserializeInfo") \
V(dest_string, "dest") \
V(destroyed_string, "destroyed") \
V(detached_string, "detached") \
V(dh_string, "DH") \
V(divisor_length_string, "divisorLength") \
V(dns_a_string, "A") \
V(dns_aaaa_string, "AAAA") \
V(dns_caa_string, "CAA") \
V(dns_critical_string, "critical") \
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(done_string, "done") \
V(duration_string, "duration") \
V(ecdh_string, "ECDH") \
V(emit_string, "emit") \
V(emit_warning_string, "emitWarning") \
V(empty_object_string, "{}") \
V(encoding_string, "encoding") \
V(entries_string, "entries") \
V(entry_type_string, "entryType") \
V(env_pairs_string, "envPairs") \
V(env_var_settings_string, "envVarSettings") \
V(errno_string, "errno") \
V(error_string, "error") \
V(exchange_string, "exchange") \
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(fields_string, "fields") \
V(file_string, "file") \
V(filename_string, "filename") \
V(fingerprint256_string, "fingerprint256") \
V(fingerprint512_string, "fingerprint512") \
V(fingerprint_string, "fingerprint") \
V(flags_string, "flags") \
V(flowlabel_string, "flowlabel") \
V(fragment_string, "fragment") \
V(frames_received_string, "framesReceived") \
V(frames_sent_string, "framesSent") \
V(function_string, "function") \
V(get_data_clone_error_string, "_getDataCloneError") \
V(get_shared_array_buffer_id_string, "_getSharedArrayBufferId") \
V(gid_string, "gid") \
V(h2_string, "h2") \
V(handle_string, "handle") \
V(hash_algorithm_string, "hashAlgorithm") \
V(help_text_string, "helpText") \
V(homedir_string, "homedir") \
V(host_string, "host") \
V(hostmaster_string, "hostmaster") \
V(http_1_1_string, "http/1.1") \
V(id_string, "id") \
V(identity_string, "identity") \
V(ignore_string, "ignore") \
V(infoaccess_string, "infoAccess") \
V(inherit_string, "inherit") \
V(input_string, "input") \
V(internal_binding_string, "internalBinding") \
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(jwk_crv_string, "crv") \
V(jwk_d_string, "d") \
V(jwk_dp_string, "dp") \
V(jwk_dq_string, "dq") \
V(jwk_dsa_string, "DSA") \
V(jwk_e_string, "e") \
V(jwk_ec_string, "EC") \
V(jwk_g_string, "g") \
V(jwk_k_string, "k") \
V(jwk_p_string, "p") \
V(jwk_q_string, "q") \
V(jwk_qi_string, "qi") \
V(jwk_kty_string, "kty") \
V(jwk_n_string, "n") \
V(jwk_oct_string, "oct") \
V(jwk_okp_string, "OKP") \
V(jwk_rsa_string, "RSA") \
V(jwk_x_string, "x") \
V(jwk_y_string, "y") \
V(kill_signal_string, "killSignal") \
V(kind_string, "kind") \
V(length_string, "length") \
V(library_string, "library") \
V(mac_string, "mac") \
V(max_buffer_string, "maxBuffer") \
V(max_concurrent_streams_string, "maxConcurrentStreams") \
V(message_port_constructor_string, "MessagePort") \
V(message_port_string, "messagePort") \
V(message_string, "message") \
V(messageerror_string, "messageerror") \
V(mgf1_hash_algorithm_string, "mgf1HashAlgorithm") \
V(minttl_string, "minttl") \
V(module_string, "module") \
V(modulus_string, "modulus") \
V(modulus_length_string, "modulusLength") \
V(name_string, "name") \
V(named_curve_string, "namedCurve") \
V(netmask_string, "netmask") \
V(next_string, "next") \
V(nistcurve_string, "nistCurve") \
V(node_string, "node") \
V(nsname_string, "nsname") \
V(object_string, "Object") \
V(ocsp_request_string, "OCSPRequest") \
V(oncertcb_string, "oncertcb") \
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(onhandshakedone_string, "onhandshakedone") \
V(onhandshakestart_string, "onhandshakestart") \
V(onkeylog_string, "onkeylog") \
V(onmessage_string, "onmessage") \
V(onnewsession_string, "onnewsession") \
V(onocspresponse_string, "onocspresponse") \
V(onreadstart_string, "onreadstart") \
V(onreadstop_string, "onreadstop") \
V(onshutdown_string, "onshutdown") \
V(onsignal_string, "onsignal") \
V(onunpipe_string, "onunpipe") \
V(onwrite_string, "onwrite") \
V(openssl_error_stack, "opensslErrorStack") \
V(options_string, "options") \
V(order_string, "order") \
V(output_string, "output") \
V(overlapped_string, "overlapped") \
V(parse_error_string, "Parse Error") \
V(password_string, "password") \
V(path_string, "path") \
V(pending_handle_string, "pendingHandle") \
V(pid_string, "pid") \
V(ping_rtt_string, "pingRTT") \
V(pipe_source_string, "pipeSource") \
V(pipe_string, "pipe") \
V(pipe_target_string, "pipeTarget") \
V(port1_string, "port1") \
V(port2_string, "port2") \
V(port_string, "port") \
V(preference_string, "preference") \
V(primordials_string, "primordials") \
V(priority_string, "priority") \
V(process_string, "process") \
V(promise_string, "promise") \
V(psk_string, "psk") \
V(pubkey_string, "pubkey") \
V(public_exponent_string, "publicExponent") \
V(query_string, "query") \
V(rate_string, "rate") \
V(raw_string, "raw") \
V(read_host_object_string, "_readHostObject") \
V(readable_string, "readable") \
V(reason_string, "reason") \
V(refresh_string, "refresh") \
V(regexp_string, "regexp") \
V(rename_string, "rename") \
V(replacement_string, "replacement") \
V(require_string, "require") \
V(retry_string, "retry") \
V(salt_length_string, "saltLength") \
V(scheme_string, "scheme") \
V(scopeid_string, "scopeid") \
V(serial_number_string, "serialNumber") \
V(serial_string, "serial") \
V(servername_string, "servername") \
V(service_string, "service") \
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(standard_name_string, "standardName") \
V(start_time_string, "startTime") \
V(state_string, "state") \
V(stats_string, "stats") \
V(status_string, "status") \
V(stdio_string, "stdio") \
V(stream_average_duration_string, "streamAverageDuration") \
V(stream_count_string, "streamCount") \
V(subject_string, "subject") \
V(subjectaltname_string, "subjectaltname") \
V(syscall_string, "syscall") \
V(target_string, "target") \
V(thread_id_string, "threadId") \
V(ticketkeycallback_string, "onticketkeycallback") \
V(timeout_string, "timeout") \
V(time_to_first_byte_string, "timeToFirstByte") \
V(time_to_first_byte_sent_string, "timeToFirstByteSent") \
V(time_to_first_header_string, "timeToFirstHeader") \
V(tls_ticket_string, "tlsTicket") \
V(transfer_string, "transfer") \
V(ttl_string, "ttl") \
V(type_string, "type") \
V(uid_string, "uid") \
V(unknown_string, "<unknown>") \
V(url_special_ftp_string, "ftp:") \
V(url_special_file_string, "file:") \
V(url_special_http_string, "http:") \
V(url_special_https_string, "https:") \
V(url_special_ws_string, "ws:") \
V(url_special_wss_string, "wss:") \
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 PER_ISOLATE_TEMPLATE_PROPERTIES(V) \
V(async_wrap_ctor_template, v8::FunctionTemplate) \
V(async_wrap_object_ctor_template, v8::FunctionTemplate) \
V(base_object_ctor_template, v8::FunctionTemplate) \
V(binding_data_ctor_template, v8::FunctionTemplate) \
V(blob_constructor_template, v8::FunctionTemplate) \
V(blocklist_constructor_template, v8::FunctionTemplate) \
V(contextify_global_template, v8::ObjectTemplate) \
V(compiled_fn_entry_template, v8::ObjectTemplate) \
V(dir_instance_template, v8::ObjectTemplate) \
V(fd_constructor_template, v8::ObjectTemplate) \
V(fdclose_constructor_template, v8::ObjectTemplate) \
V(filehandlereadwrap_template, v8::ObjectTemplate) \
V(fsreqpromise_constructor_template, v8::ObjectTemplate) \
V(handle_wrap_ctor_template, v8::FunctionTemplate) \
V(histogram_ctor_template, v8::FunctionTemplate) \
V(http2settings_constructor_template, v8::ObjectTemplate) \
V(http2stream_constructor_template, v8::ObjectTemplate) \
V(http2ping_constructor_template, v8::ObjectTemplate) \
V(i18n_converter_template, v8::ObjectTemplate) \
V(intervalhistogram_constructor_template, v8::FunctionTemplate) \
V(libuv_stream_wrap_ctor_template, v8::FunctionTemplate) \
V(message_port_constructor_template, v8::FunctionTemplate) \
V(microtask_queue_ctor_template, v8::FunctionTemplate) \
V(pipe_constructor_template, v8::FunctionTemplate) \
V(promise_wrap_template, v8::ObjectTemplate) \
V(sab_lifetimepartner_constructor_template, v8::FunctionTemplate) \
V(script_context_constructor_template, v8::FunctionTemplate) \
V(secure_context_constructor_template, v8::FunctionTemplate) \
V(shutdown_wrap_template, v8::ObjectTemplate) \
V(socketaddress_constructor_template, v8::FunctionTemplate) \
V(streambaseoutputstream_constructor_template, v8::ObjectTemplate) \
V(qlogoutputstream_constructor_template, v8::ObjectTemplate) \
V(tcp_constructor_template, v8::FunctionTemplate) \
V(tty_constructor_template, v8::FunctionTemplate) \
V(write_wrap_template, v8::ObjectTemplate) \
V(worker_heap_snapshot_taker_template, v8::ObjectTemplate) \
V(x509_constructor_template, v8::FunctionTemplate)
#define ENVIRONMENT_STRONG_PERSISTENT_VALUES(V) \
V(async_hooks_after_function, v8::Function) \
V(async_hooks_before_function, v8::Function) \
V(async_hooks_callback_trampoline, 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(buffer_prototype_object, v8::Object) \
V(crypto_key_object_constructor, v8::Function) \
V(crypto_key_object_handle_constructor, v8::Function) \
V(crypto_key_object_private_constructor, v8::Function) \
V(crypto_key_object_public_constructor, v8::Function) \
V(crypto_key_object_secret_constructor, v8::Function) \
V(domexception_function, v8::Function) \
V(enhance_fatal_stack_after_inspector, v8::Function) \
V(enhance_fatal_stack_before_inspector, v8::Function) \
V(fs_use_promises_symbol, v8::Symbol) \
V(get_source_map_error_source, v8::Function) \
V(host_import_module_dynamically_callback, v8::Function) \
V(host_initialize_import_meta_object_callback, v8::Function) \
V(http2session_on_altsvc_function, v8::Function) \
V(http2session_on_error_function, v8::Function) \
V(http2session_on_frame_error_function, v8::Function) \
V(http2session_on_goaway_data_function, v8::Function) \
V(http2session_on_headers_function, v8::Function) \
V(http2session_on_origin_function, v8::Function) \
V(http2session_on_ping_function, v8::Function) \
V(http2session_on_priority_function, v8::Function) \
V(http2session_on_settings_function, v8::Function) \
V(http2session_on_stream_close_function, v8::Function) \
V(http2session_on_stream_trailers_function, v8::Function) \
V(internal_binding_loader, v8::Function) \
V(immediate_callback_function, v8::Function) \
V(inspector_console_extension_installer, v8::Function) \
V(inspector_disable_async_hooks, v8::Function) \
V(inspector_enable_async_hooks, v8::Function) \
V(maybe_cache_generated_source_map, v8::Function) \
V(messaging_deserialize_create_object, v8::Function) \
V(message_port, v8::Object) \
V(builtin_module_require, v8::Function) \
V(performance_entry_callback, v8::Function) \
V(performance_entry_template, v8::Function) \
V(prepare_stack_trace_callback, v8::Function) \
V(process_object, v8::Object) \
V(primordials, v8::Object) \
V(primordials_safe_map_prototype_object, v8::Object) \
V(primordials_safe_set_prototype_object, v8::Object) \
V(primordials_safe_weak_map_prototype_object, v8::Object) \
V(primordials_safe_weak_set_prototype_object, v8::Object) \
V(promise_hook_handler, v8::Function) \
V(promise_reject_callback, v8::Function) \
V(snapshot_serialize_callback, v8::Function) \
V(snapshot_deserialize_callback, v8::Function) \
V(snapshot_deserialize_main, v8::Function) \
V(source_map_cache_getter, v8::Function) \
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(udp_constructor_function, v8::Function) \
V(url_constructor_function, v8::Function) \
V(wasm_streaming_compilation_impl, v8::Function) \
V(wasm_streaming_object_constructor, v8::Function)
class Environment;
typedef size_t SnapshotIndex;
struct PropInfo {
std::string name; // name for debugging
uint32_t id; // In the list - in case there are any empty entries
SnapshotIndex index; // In the snapshot
};
struct IsolateDataSerializeInfo {
std::vector<SnapshotIndex> primitive_values;
std::vector<PropInfo> template_values;
friend std::ostream& operator<<(std::ostream& o,
const IsolateDataSerializeInfo& i);
};
class NODE_EXTERN_PRIVATE IsolateData : public MemoryRetainer {
public:
IsolateData(v8::Isolate* isolate,
uv_loop_t* event_loop,
MultiIsolatePlatform* platform = nullptr,
ArrayBufferAllocator* node_allocator = nullptr,
const IsolateDataSerializeInfo* isolate_data_info = nullptr);
SET_MEMORY_INFO_NAME(IsolateData)
SET_SELF_SIZE(IsolateData)
void MemoryInfo(MemoryTracker* tracker) const override;
IsolateDataSerializeInfo Serialize(v8::SnapshotCreator* creator);
inline uv_loop_t* event_loop() const;
inline MultiIsolatePlatform* platform() const;
inline std::shared_ptr<PerIsolateOptions> options();
inline void set_options(std::shared_ptr<PerIsolateOptions> options);
inline NodeArrayBufferAllocator* node_allocator() const;
inline worker::Worker* worker_context() const;
inline void set_worker_context(worker::Worker* context);
#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 VY
#undef VS
#undef VP
#define V(PropertyName, TypeName) \
inline v8::Local<TypeName> PropertyName() const; \
inline void set_##PropertyName(v8::Local<TypeName> value);
PER_ISOLATE_TEMPLATE_PROPERTIES(V)
#undef V
inline v8::Local<v8::String> async_wrap_provider(int index) const;
size_t max_young_gen_size = 1;
std::unordered_map<const char*, v8::Eternal<v8::String>> static_str_map;
inline v8::Isolate* isolate() const;
IsolateData(const IsolateData&) = delete;
IsolateData& operator=(const IsolateData&) = delete;
IsolateData(IsolateData&&) = delete;
IsolateData& operator=(IsolateData&&) = delete;
private:
void DeserializeProperties(const IsolateDataSerializeInfo* isolate_data_info);
void CreateProperties();
#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 VT(PropertyName, TypeName) V(TypeName, 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)
PER_ISOLATE_TEMPLATE_PROPERTIES(VT)
#undef V
#undef V
#undef VT
#undef VS
#undef VY
#undef VP
// Keep a list of all Persistent strings used for AsyncWrap Provider types.
std::array<v8::Eternal<v8::String>, AsyncWrap::PROVIDERS_LENGTH>
async_wrap_providers_;
v8::Isolate* const isolate_;
uv_loop_t* const event_loop_;
NodeArrayBufferAllocator* const node_allocator_;
MultiIsolatePlatform* platform_;
std::shared_ptr<PerIsolateOptions> options_;
worker::Worker* worker_context_ = nullptr;
};
struct ContextInfo {
explicit ContextInfo(const std::string& name) : name(name) {}
const std::string name;
std::string origin;
bool is_default = false;
};
class EnabledDebugList;
namespace per_process {
extern std::shared_ptr<KVStore> system_environment;
}
struct EnvSerializeInfo;
class AsyncHooks : public MemoryRetainer {
public:
SET_MEMORY_INFO_NAME(AsyncHooks)
SET_SELF_SIZE(AsyncHooks)
void MemoryInfo(MemoryTracker* tracker) const override;
// 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,
kUsesExecutionAsyncResource,
kFieldsCount,
};
enum UidFields {
kExecutionAsyncId,
kTriggerAsyncId,
kAsyncIdCounter,
kDefaultTriggerAsyncId,
kUidFieldsCount,
};
inline AliasedUint32Array& fields();
inline AliasedFloat64Array& async_id_fields();
inline AliasedFloat64Array& async_ids_stack();
inline v8::Local<v8::Array> js_execution_async_resources();
// Returns the native executionAsyncResource value at stack index `index`.
// Resources provided on the JS side are not stored on the native stack,
// in which case an empty `Local<>` is returned.
// The `js_execution_async_resources` array contains the value in that case.
inline v8::Local<v8::Object> native_execution_async_resource(size_t index);
void SetJSPromiseHooks(v8::Local<v8::Function> init,
v8::Local<v8::Function> before,
v8::Local<v8::Function> after,
v8::Local<v8::Function> resolve);
inline v8::Local<v8::String> provider_string(int idx);
inline void no_force_checks();
inline Environment* env();
// NB: This call does not take (co-)ownership of `execution_async_resource`.
// The lifetime of the `v8::Local<>` pointee must last until
// `pop_async_context()` or `clear_async_id_stack()` are called.
void push_async_context(double async_id,
double trigger_async_id,
v8::Local<v8::Object> execution_async_resource);
bool pop_async_context(double async_id);
void clear_async_id_stack(); // Used in fatal exceptions.
void AddContext(v8::Local<v8::Context> ctx);
void RemoveContext(v8::Local<v8::Context> ctx);
AsyncHooks(const AsyncHooks&) = delete;
AsyncHooks& operator=(const AsyncHooks&) = delete;
AsyncHooks(AsyncHooks&&) = delete;
AsyncHooks& operator=(AsyncHooks&&) = delete;
~AsyncHooks() = default;
// 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();
DefaultTriggerAsyncIdScope(const DefaultTriggerAsyncIdScope&) = delete;
DefaultTriggerAsyncIdScope& operator=(const DefaultTriggerAsyncIdScope&) =
delete;
DefaultTriggerAsyncIdScope(DefaultTriggerAsyncIdScope&&) = delete;
DefaultTriggerAsyncIdScope& operator=(DefaultTriggerAsyncIdScope&&) =
delete;
private:
AsyncHooks* async_hooks_;
double old_default_trigger_async_id_;
};
struct SerializeInfo {
AliasedBufferIndex async_ids_stack;
AliasedBufferIndex fields;
AliasedBufferIndex async_id_fields;
SnapshotIndex js_execution_async_resources;
std::vector<SnapshotIndex> native_execution_async_resources;
};
SerializeInfo Serialize(v8::Local<v8::Context> context,
v8::SnapshotCreator* creator);
void Deserialize(v8::Local<v8::Context> context);
private:
friend class Environment; // So we can call the constructor.
explicit AsyncHooks(v8::Isolate* isolate, const SerializeInfo* info);
[[noreturn]] void FailWithCorruptedAsyncStack(double expected_async_id);
// Stores the ids of the current execution context stack.
AliasedFloat64Array async_ids_stack_;
// Attached to a Uint32Array that tracks the number of active hooks for
// each type.
AliasedUint32Array fields_;
// Attached to a Float64Array that tracks the state of async resources.
AliasedFloat64Array async_id_fields_;
void grow_async_ids_stack();
v8::Global<v8::Array> js_execution_async_resources_;
std::vector<v8::Local<v8::Object>> native_execution_async_resources_;
// Non-empty during deserialization
const SerializeInfo* info_ = nullptr;
std::vector<v8::Global<v8::Context>> contexts_;
std::array<v8::Global<v8::Function>, 4> js_promise_hooks_;
};
class ImmediateInfo : public MemoryRetainer {
public:
inline AliasedUint32Array& fields();
inline uint32_t count() const;
inline uint32_t ref_count() const;
inline bool has_outstanding() const;
inline void ref_count_inc(uint32_t increment);
inline void ref_count_dec(uint32_t decrement);
ImmediateInfo(const ImmediateInfo&) = delete;
ImmediateInfo& operator=(const ImmediateInfo&) = delete;
ImmediateInfo(ImmediateInfo&&) = delete;
ImmediateInfo& operator=(ImmediateInfo&&) = delete;
~ImmediateInfo() = default;
SET_MEMORY_INFO_NAME(ImmediateInfo)
SET_SELF_SIZE(ImmediateInfo)
void MemoryInfo(MemoryTracker* tracker) const override;
struct SerializeInfo {
AliasedBufferIndex fields;
};
SerializeInfo Serialize(v8::Local<v8::Context> context,
v8::SnapshotCreator* creator);
void Deserialize(v8::Local<v8::Context> context);
private:
friend class Environment; // So we can call the constructor.
explicit ImmediateInfo(v8::Isolate* isolate, const SerializeInfo* info);
enum Fields { kCount, kRefCount, kHasOutstanding, kFieldsCount };
AliasedUint32Array fields_;
};
class TickInfo : public MemoryRetainer {
public:
inline AliasedUint8Array& fields();
inline bool has_tick_scheduled() const;
inline bool has_rejection_to_warn() const;
SET_MEMORY_INFO_NAME(TickInfo)
SET_SELF_SIZE(TickInfo)
void MemoryInfo(MemoryTracker* tracker) const override;
TickInfo(const TickInfo&) = delete;
TickInfo& operator=(const TickInfo&) = delete;
TickInfo(TickInfo&&) = delete;
TickInfo& operator=(TickInfo&&) = delete;
~TickInfo() = default;
struct SerializeInfo {
AliasedBufferIndex fields;
};
SerializeInfo Serialize(v8::Local<v8::Context> context,
v8::SnapshotCreator* creator);
void Deserialize(v8::Local<v8::Context> context);
private:
friend class Environment; // So we can call the constructor.
explicit TickInfo(v8::Isolate* isolate, const SerializeInfo* info);
enum Fields { kHasTickScheduled = 0, kHasRejectionToWarn, kFieldsCount };
AliasedUint8Array fields_;
};
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();
ShouldNotAbortOnUncaughtScope(const ShouldNotAbortOnUncaughtScope&) = delete;
ShouldNotAbortOnUncaughtScope& operator=(
const ShouldNotAbortOnUncaughtScope&) = delete;
ShouldNotAbortOnUncaughtScope(ShouldNotAbortOnUncaughtScope&&) = delete;
ShouldNotAbortOnUncaughtScope& operator=(ShouldNotAbortOnUncaughtScope&&) =
delete;
private:
Environment* env_;
};
typedef void (*DeserializeRequestCallback)(v8::Local<v8::Context> context,
v8::Local<v8::Object> holder,
int index,
InternalFieldInfo* info);
struct DeserializeRequest {
DeserializeRequestCallback cb;
v8::Global<v8::Object> holder;
int index;
InternalFieldInfo* info = nullptr; // Owned by the request
// Move constructor
DeserializeRequest(DeserializeRequest&& other) = default;
};
struct EnvSerializeInfo {
std::vector<PropInfo> bindings;
std::vector<std::string> builtins;
AsyncHooks::SerializeInfo async_hooks;
TickInfo::SerializeInfo tick_info;
ImmediateInfo::SerializeInfo immediate_info;
performance::PerformanceState::SerializeInfo performance_state;
AliasedBufferIndex exiting;
AliasedBufferIndex stream_base_state;
AliasedBufferIndex should_abort_on_uncaught_toggle;
std::vector<PropInfo> persistent_values;
SnapshotIndex context;
friend std::ostream& operator<<(std::ostream& o, const EnvSerializeInfo& i);
};
struct SnapshotMetadata {
// For now kFullyCustomized is only built with the --build-snapshot CLI flag.
// We might want to add more types of snapshots in the future.
enum class Type : uint8_t { kDefault, kFullyCustomized };
Type type;
std::string node_version;
std::string node_arch;
std::string node_platform;
// Result of v8::ScriptCompiler::CachedDataVersionTag().
uint32_t v8_cache_version_tag;
};
struct SnapshotData {
enum class DataOwnership { kOwned, kNotOwned };
static const uint32_t kMagic = 0x143da19;
static const SnapshotIndex kNodeVMContextIndex = 0;
static const SnapshotIndex kNodeBaseContextIndex = kNodeVMContextIndex + 1;
static const SnapshotIndex kNodeMainContextIndex = kNodeBaseContextIndex + 1;
DataOwnership data_ownership = DataOwnership::kOwned;
SnapshotMetadata metadata;
// The result of v8::SnapshotCreator::CreateBlob() during the snapshot
// building process.
v8::StartupData v8_snapshot_blob_data{nullptr, 0};
IsolateDataSerializeInfo isolate_data_info;
// TODO(joyeecheung): there should be a vector of env_info once we snapshot
// the worker environments.
EnvSerializeInfo env_info;
// A vector of built-in ids and v8::ScriptCompiler::CachedData, this can be
// shared across Node.js instances because they are supposed to share the
// read only space. We use builtins::CodeCacheInfo because
// v8::ScriptCompiler::CachedData is not copyable.
std::vector<builtins::CodeCacheInfo> code_cache;
void ToBlob(FILE* out) const;
// If returns false, the metadata doesn't match the current Node.js binary,
// and the caller should not consume the snapshot data.
bool Check() const;