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cli: add --node-memory-debug option 

Add a public switch that turns on features for debugging memory
leaks inside of Node.js core.

PR-URL: https://github.com/nodejs/node/pull/35537
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>
pull/35537/head
Anna Henningsen 2020-10-04 12:51:05 +02:00 committed by Rich Trott
parent 936ce85c0b
commit 1d5fa88eb8
3 changed files with 19 additions and 0 deletions
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9
doc/api/cli.md
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@ -546,6 +546,14 @@ added: v6.0.0
Silence all process warnings (including deprecations). Silence all process warnings (including deprecations).
### `--node-memory-debug`
<!-- YAML
added: REPLACEME
-->
Enable extra debug checks for memory leaks in Node.js internals. This is
usually only useful for developers debugging Node.js itself.
### `--openssl-config=file` ### `--openssl-config=file`
<!-- YAML <!-- YAML
added: v6.9.0 added: v6.9.0
@ -1282,6 +1290,7 @@ Node.js options that are allowed are:
* `--no-deprecation` * `--no-deprecation`
* `--no-force-async-hooks-checks` * `--no-force-async-hooks-checks`
* `--no-warnings` * `--no-warnings`
* `--node-memory-debug`
* `--openssl-config` * `--openssl-config`
* `--pending-deprecation` * `--pending-deprecation`
* `--policy-integrity` * `--policy-integrity`

4
doc/node.1
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@ -278,6 +278,10 @@ These will still be enabled dynamically when `async_hooks` is enabled.
.It Fl -no-warnings .It Fl -no-warnings
Silence all process warnings (including deprecations). Silence all process warnings (including deprecations).
. .
.It Fl -node-memory-debug
Enable extra debug checks for memory leaks in Node.js internals. This is
usually only useful for developers debugging Node.js itself.
.
.It Fl -openssl-config Ns = Ns Ar file .It Fl -openssl-config Ns = Ns Ar file
Load an OpenSSL configuration file on startup. Load an OpenSSL configuration file on startup.
Among other uses, this can be used to enable FIPS-compliant crypto if Node.js is built with Among other uses, this can be used to enable FIPS-compliant crypto if Node.js is built with

6
src/node_options.cc
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@ -762,6 +762,12 @@ PerProcessOptionsParser::PerProcessOptionsParser(
kAllowedInEnvironment); kAllowedInEnvironment);
Insert(iop, &PerProcessOptions::get_per_isolate_options); Insert(iop, &PerProcessOptions::get_per_isolate_options);
AddOption("--node-memory-debug",
"Run with extra debug checks for memory leaks in Node.js itself",
NoOp{}, kAllowedInEnvironment);
Implies("--node-memory-debug", "--debug-arraybuffer-allocations");
Implies("--node-memory-debug", "--verify-base-objects");
} }
inline std::string RemoveBrackets(const std::string& host) { inline std::string RemoveBrackets(const std::string& host) {