src: add process.ppid
Fixes: https://github.com/nodejs/node/issues/14957 PR-URL: https://github.com/nodejs/node/pull/16839 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: James M Snell <jasnell@gmail.com>
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@ -1416,6 +1416,19 @@ system platform on which the Node.js process is running. For instance
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console.log(`This platform is ${process.platform}`);
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```
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## process.ppid
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<!-- YAML
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added: REPLACEME
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-->
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* {integer}
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The `process.ppid` property returns the PID of the current parent process.
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```js
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console.log(`The parent process is pid ${process.ppid}`);
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```
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## process.release
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<!-- YAML
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added: v3.0.0
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@ -2906,6 +2906,12 @@ static void EnvEnumerator(const PropertyCallbackInfo<Array>& info) {
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}
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static void GetParentProcessId(Local<Name> property,
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const PropertyCallbackInfo<Value>& info) {
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info.GetReturnValue().Set(Integer::New(info.GetIsolate(), uv_os_getppid()));
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}
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static Local<Object> GetFeatures(Environment* env) {
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EscapableHandleScope scope(env->isolate());
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@ -3238,6 +3244,9 @@ void SetupProcessObject(Environment* env,
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READONLY_PROPERTY(process, "pid", Integer::New(env->isolate(), getpid()));
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READONLY_PROPERTY(process, "features", GetFeatures(env));
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process->SetAccessor(FIXED_ONE_BYTE_STRING(env->isolate(), "ppid"),
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GetParentProcessId);
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auto need_immediate_callback_string =
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FIXED_ONE_BYTE_STRING(env->isolate(), "_needImmediateCallback");
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CHECK(process->SetAccessor(env->context(), need_immediate_callback_string,
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16
test/parallel/test-process-ppid.js
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16
test/parallel/test-process-ppid.js
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@ -0,0 +1,16 @@
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'use strict';
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require('../common');
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const assert = require('assert');
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const cp = require('child_process');
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if (process.argv[2] === 'child') {
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// The following console.log() call is part of the test's functionality.
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console.log(process.ppid);
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} else {
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const child = cp.spawnSync(process.execPath, [__filename, 'child']);
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assert.strictEqual(child.status, 0);
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assert.strictEqual(child.signal, null);
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assert.strictEqual(+child.stdout.toString().trim(), process.pid);
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assert.strictEqual(child.stderr.toString().trim(), '');
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}
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