lib: load v8_prof_processor dependencies as ESM

The script versions are no longer available.

PR-URL: #37587
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>

lib/internal/v8_prof_polyfill.js

@@ -40,7 +40,7 @@ if (module.id === 'internal/v8_prof_polyfill') return;
 // Node polyfill
 const fs = require('fs');
 const cp = require('child_process');
-const os = { // eslint-disable-line no-unused-vars
+const os = {
   system: function(name, args) {
     if (process.platform === 'linux' && name === 'nm') {
       // Filter out vdso and vsyscall entries.
@@ -66,14 +66,13 @@ const os = { // eslint-disable-line no-unused-vars
     return out;
   }
 };
-const print = console.log; // eslint-disable-line no-unused-vars
-function read(fileName) { // eslint-disable-line no-unused-vars
+const print = console.log;
+function read(fileName) {
   return fs.readFileSync(fileName, 'utf8');
 }
-const quit = process.exit; // eslint-disable-line no-unused-vars
-
+const quit = process.exit;
 // Polyfill "readline()".
-const logFile = arguments[arguments.length - 1]; // eslint-disable-line no-undef
+const logFile = globalThis.arguments[globalThis.arguments.length - 1];
 try {
   fs.accessSync(logFile);
 } catch {
@@ -161,3 +160,11 @@ function macCppfiltNm(out) {
     return prefix + (filtered[i++] || postfix);
   });
 }
+
+Object.assign(globalThis, {
+  os,
+  print,
+  read,
+  quit,
+  readline,
+});

lib/internal/v8_prof_processor.js

@@ -3,43 +3,51 @@
 const {
   ArrayPrototypePush,
   ArrayPrototypeSlice,
-  JSONStringify,
+  StringPrototypeSlice,
 } = primordials;
 
+const Buffer = require('buffer').Buffer;
+const console = require('internal/console/global');
 const vm = require('vm');
+const { SourceTextModule } = require('internal/vm/module');
 
-const scriptFiles = [
-  'internal/v8_prof_polyfill',
-  'internal/deps/v8/tools/splaytree',
-  'internal/deps/v8/tools/codemap',
-  'internal/deps/v8/tools/csvparser',
-  'internal/deps/v8/tools/consarray',
-  'internal/deps/v8/tools/profile',
-  'internal/deps/v8/tools/profile_view',
-  'internal/deps/v8/tools/logreader',
-  'internal/deps/v8/tools/arguments',
-  'internal/deps/v8/tools/tickprocessor',
-  'internal/deps/v8/tools/SourceMap',
-  'internal/deps/v8/tools/tickprocessor-driver',
-];
-let script = '';
-
-for (const s of scriptFiles) {
-  script += internalBinding('natives')[s] + '\n';
-}
+const natives = internalBinding('natives');
 
-const tickArguments = [];
-if (process.platform === 'darwin') {
-  ArrayPrototypePush(tickArguments, '--mac');
-} else if (process.platform === 'win32') {
-  ArrayPrototypePush(tickArguments, '--windows');
+async function linker(specifier, referencingModule) {
+  // Transform "./file.mjs" to "file"
+  const file = StringPrototypeSlice(specifier, 2, -4);
+  const code = natives[`internal/deps/v8/tools/${file}`];
+  return new SourceTextModule(code, { context: referencingModule.context });
 }
-ArrayPrototypePush(tickArguments,
-                   ...ArrayPrototypeSlice(process.argv, 1));
-script = `(function(module, require) {
-  arguments = ${JSONStringify(tickArguments)};
-  function write (s) { process.stdout.write(s) }
-  function printErr(err) { console.error(err); }
-  ${script}
-})`;
-vm.runInThisContext(script)(module, require);
+
+(async () => {
+  const tickArguments = [];
+  if (process.platform === 'darwin') {
+    ArrayPrototypePush(tickArguments, '--mac');
+  } else if (process.platform === 'win32') {
+    ArrayPrototypePush(tickArguments, '--windows');
+  }
+  ArrayPrototypePush(tickArguments,
+                     ...ArrayPrototypeSlice(process.argv, 1));
+
+  const context = vm.createContext({
+    arguments: tickArguments,
+    write(s) { process.stdout.write(s); },
+    printErr(err) { console.error(err); },
+    console,
+    process,
+    Buffer,
+  });
+
+  const polyfill = natives['internal/v8_prof_polyfill'];
+  const script = `(function(module, require) {
+    ${polyfill}
+  })`;
+
+  vm.runInContext(script, context)(module, require);
+
+  const tickProcessor = natives['internal/deps/v8/tools/tickprocessor-driver'];
+  const tickprocessorDriver = new SourceTextModule(tickProcessor, { context });
+  await tickprocessorDriver.link(linker);
+  await tickprocessorDriver.evaluate();
+})();

node.gyp

@@ -264,17 +264,17 @@
       'lib/internal/streams/pipeline.js',
       'lib/internal/streams/end-of-stream.js',
       'lib/internal/streams/utils.js',
-      'deps/v8/tools/splaytree.js',
-      'deps/v8/tools/codemap.js',
-      'deps/v8/tools/consarray.js',
-      'deps/v8/tools/csvparser.js',
-      'deps/v8/tools/profile.js',
-      'deps/v8/tools/profile_view.js',
-      'deps/v8/tools/logreader.js',
-      'deps/v8/tools/arguments.js',
-      'deps/v8/tools/tickprocessor.js',
-      'deps/v8/tools/SourceMap.js',
-      'deps/v8/tools/tickprocessor-driver.js',
+      'deps/v8/tools/splaytree.mjs',
+      'deps/v8/tools/codemap.mjs',
+      'deps/v8/tools/consarray.mjs',
+      'deps/v8/tools/csvparser.mjs',
+      'deps/v8/tools/profile.mjs',
+      'deps/v8/tools/profile_view.mjs',
+      'deps/v8/tools/logreader.mjs',
+      'deps/v8/tools/arguments.mjs',
+      'deps/v8/tools/tickprocessor.mjs',
+      'deps/v8/tools/sourcemap.mjs',
+      'deps/v8/tools/tickprocessor-driver.mjs',
       'deps/node-inspect/lib/_inspect.js',
       'deps/node-inspect/lib/internal/inspect_client.js',
       'deps/node-inspect/lib/internal/inspect_repl.js',

tools/js2c.py

@@ -140,6 +140,8 @@ def JS2C(source_files, target):
 
   for filename in source_files['.js']:
     AddModule(filename, definitions, initializers)
+  for filename in source_files['.mjs']:
+    AddModule(filename, definitions, initializers)
 
   config_def, config_size = handle_config_gypi(source_files['config.gypi'])
   definitions.append(config_def)
@@ -208,8 +210,8 @@ def main():
   global is_verbose
   is_verbose = options.verbose
   source_files = functools.reduce(SourceFileByExt, options.sources, {})
-  # Should have exactly 2 types: `.js`, and `.gypi`
-  assert len(source_files) == 2
+  # Should have exactly 3 types: `.js`, `.mjs` and `.gypi`
+  assert len(source_files) == 3
   # Currently config.gypi is the only `.gypi` file allowed
   assert source_files['.gypi'] == ['config.gypi']
   source_files['config.gypi'] = source_files.pop('.gypi')[0]