test: remove isGlibc from common

The `common.isGlibc()` function is called exactly once from only
one test. There's no reason for it to be in `require('../common')`
at the current time. If it ends up needing to be used by multiple
tests, it can easily be moved into it's own common sub-module
(e.g. `require('../common/isglibc')` ... for now tho, just move
it into the one test that uses it and simplify the implementation
a bit to remove unnecessary caching.

PR-URL: https://github.com/nodejs/node/pull/22443
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

test/abort/test-addon-uv-handle-leak.js

@@ -6,6 +6,7 @@ const fs = require('fs');
 const path = require('path');
 const cp = require('child_process');
 const { Worker } = require('worker_threads');
+const { spawnSync } = require('child_process');
 
 // This is a sibling test to test/addons/uv-handle-leak.
 
@@ -49,9 +50,25 @@ if (process.argv[2] === 'child') {
   //         Close callback: 0x7f2df31de220 CloseCallback(uv_handle_s*) [...]
   //         Data: 0x42
 
+  function isGlibc() {
+    try {
+      const lddOut = spawnSync('ldd', [process.execPath]).stdout;
+      const libcInfo = lddOut.toString().split('\n').map(
+        (line) => line.match(/libc\.so.+=>\s*(\S+)\s/)).filter((info) => info);
+      if (libcInfo.length === 0)
+        return false;
+      const nmOut = spawnSync('nm', ['-D', libcInfo[0][1]]).stdout;
+      if (/gnu_get_libc_version/.test(nmOut))
+        return true;
+    } catch {
+      return false;
+    }
+  }
+
+
   if (!(common.isFreeBSD ||
         common.isAIX ||
-        (common.isLinux && !common.isGlibc()) ||
+        (common.isLinux && !isGlibc()) ||
         common.isWindows)) {
     assert(stderr.includes('ExampleOwnerClass'), stderr);
     assert(stderr.includes('CloseCallback'), stderr);

test/common/index.js

@@ -66,23 +66,6 @@ exports.isOpenBSD = process.platform === 'openbsd';
 exports.isLinux = process.platform === 'linux';
 exports.isOSX = process.platform === 'darwin';
 
-let isGlibc;
-exports.isGlibc = () => {
-  if (isGlibc !== undefined)
-    return isGlibc;
-  try {
-    const lddOut = spawnSync('ldd', [process.execPath]).stdout;
-    const libcInfo = lddOut.toString().split('\n').map(
-      (line) => line.match(/libc\.so.+=>\s*(\S+)\s/)).filter((info) => info);
-    if (libcInfo.length === 0)
-      return isGlibc = false;
-    const nmOut = spawnSync('nm', ['-D', libcInfo[0][1]]).stdout;
-    if (/gnu_get_libc_version/.test(nmOut))
-      return isGlibc = true;
-  } catch {}
-  return isGlibc = false;
-};
-
 exports.enoughTestMem = os.totalmem() > 0x70000000; /* 1.75 Gb */
 const cpus = os.cpus();
 exports.enoughTestCpu = Array.isArray(cpus) &&

test/common/index.mjs

@@ -13,7 +13,6 @@ const {
   isOpenBSD,
   isLinux,
   isOSX,
-  isGlibc,
   enoughTestMem,
   enoughTestCpu,
   rootDir,
@@ -71,7 +70,6 @@ export {
   isOpenBSD,
   isLinux,
   isOSX,
-  isGlibc,
   enoughTestMem,
   enoughTestCpu,
   rootDir,