From 9ca41e964246ad5f804a91419d6590ee83653fd8 Mon Sep 17 00:00:00 2001 From: Daniel Bevenius Date: Fri, 18 May 2018 12:51:20 +0200 Subject: [PATCH] src: introduce inspect-brk-node This commit is a suggestion to add a new option to the node executable to allow for breaking in node's javascript bootstrapper code. Previously I've been able to set breakpoints in node bootstrapper code and then restart the debugging session and those breakpoints would be hit, but I don't seem to be able to do so anymore. Having this option would allow me to use this option and then step through or add more break points as needed. PR-URL: https://github.com/nodejs/node/pull/20819 Reviewed-By: Joyee Cheung Reviewed-By: Ben Noordhuis Reviewed-By: James M Snell --- lib/internal/bootstrap/loaders.js | 5 ++++- src/node.cc | 8 +++++++- src/node_debug_options.cc | 4 ++++ src/node_debug_options.h | 6 +++++- 4 files changed, 20 insertions(+), 3 deletions(-) diff --git a/lib/internal/bootstrap/loaders.js b/lib/internal/bootstrap/loaders.js index 4291092532e..de911eb841e 100644 --- a/lib/internal/bootstrap/loaders.js +++ b/lib/internal/bootstrap/loaders.js @@ -40,7 +40,10 @@ 'use strict'; (function bootstrapInternalLoaders(process, getBinding, getLinkedBinding, - getInternalBinding) { + getInternalBinding, debugBreak) { + if (debugBreak) + debugger; // eslint-disable-line no-debugger + const { apply: ReflectApply, deleteProperty: ReflectDeleteProperty, diff --git a/src/node.cc b/src/node.cc index 6cf5f2ad84b..71af5b93f66 100644 --- a/src/node.cc +++ b/src/node.cc @@ -2190,6 +2190,11 @@ void SetupProcessObject(Environment* env, "_breakFirstLine", True(env->isolate())); } + if (debug_options.break_node_first_line()) { + READONLY_DONT_ENUM_PROPERTY(process, + "_breakNodeFirstLine", True(env->isolate())); + } + // --inspect --debug-brk if (debug_options.deprecated_invocation()) { READONLY_DONT_ENUM_PROPERTY(process, @@ -2401,7 +2406,8 @@ void LoadEnvironment(Environment* env) { env->process_object(), get_binding_fn, get_linked_binding_fn, - get_internal_binding_fn + get_internal_binding_fn, + Boolean::New(env->isolate(), debug_options.break_node_first_line()) }; // Bootstrap internal loaders diff --git a/src/node_debug_options.cc b/src/node_debug_options.cc index 3ec77313204..5fc29059ddc 100644 --- a/src/node_debug_options.cc +++ b/src/node_debug_options.cc @@ -58,6 +58,7 @@ DebugOptions::DebugOptions() : inspector_enabled_(false), deprecated_debug_(false), break_first_line_(false), + break_node_first_line_(false), host_name_("127.0.0.1"), port_(-1) { } bool DebugOptions::ParseOption(const char* argv0, const std::string& option) { @@ -90,6 +91,9 @@ bool DebugOptions::ParseOption(const char* argv0, const std::string& option) { } else if (option_name == "--inspect-brk") { inspector_enabled_ = true; break_first_line_ = true; + } else if (option_name == "--inspect-brk-node") { + inspector_enabled_ = true; + break_node_first_line_ = true; } else if (option_name == "--debug-brk") { break_first_line_ = true; deprecated_debug_ = true; diff --git a/src/node_debug_options.h b/src/node_debug_options.h index 99364f40989..98922ab099a 100644 --- a/src/node_debug_options.h +++ b/src/node_debug_options.h @@ -19,16 +19,20 @@ class DebugOptions { bool invalid_invocation() const { return deprecated_debug_ && !inspector_enabled_; } - bool wait_for_connect() const { return break_first_line_; } + bool wait_for_connect() const { + return break_first_line_ || break_node_first_line_; + } std::string host_name() const { return host_name_; } void set_host_name(std::string host_name) { host_name_ = host_name; } int port() const; void set_port(int port) { port_ = port; } + bool break_node_first_line() const { return break_node_first_line_; } private: bool inspector_enabled_; bool deprecated_debug_; bool break_first_line_; + bool break_node_first_line_; std::string host_name_; int port_; };