trace_events: move trace_events to internalBinding

PR-URL: #22159
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Trivikram Kamat <[email protected]>
Reviewed-By: Joyee Cheung <[email protected]>
Reviewed-By: Jon Moss <[email protected]>

Author: jasnell

benchmark/misc/trace.js

@@ -9,34 +9,27 @@ const bench = common.createBenchmark(main, {
   flags: ['--expose-internals', '--trace-event-categories', 'foo']
 });
 
-const {
-  trace,
-  isTraceCategoryEnabled,
-  emit,
-  categoryGroupEnabled
-} = process.binding('trace_events');
-
 const {
   TRACE_EVENT_PHASE_NESTABLE_ASYNC_BEGIN: kBeforeEvent
 } = process.binding('constants').trace;
 
-function doEmit(n) {
+function doEmit(n, emit) {
   bench.start();
   for (var i = 0; i < n; i++) {
     emit(kBeforeEvent, 'foo', 'test', 0, 'arg1', 1);
   }
   bench.end(n);
 }
 
-function doTrace(n) {
+function doTrace(n, trace) {
   bench.start();
   for (var i = 0; i < n; i++) {
     trace(kBeforeEvent, 'foo', 'test', 0, 'test');
   }
   bench.end(n);
 }
 
-function doIsTraceCategoryEnabled(n) {
+function doIsTraceCategoryEnabled(n, isTraceCategoryEnabled) {
   bench.start();
   for (var i = 0; i < n; i++) {
     isTraceCategoryEnabled('foo');
@@ -45,7 +38,7 @@ function doIsTraceCategoryEnabled(n) {
   bench.end(n);
 }
 
-function doCategoryGroupEnabled(n) {
+function doCategoryGroupEnabled(n, categoryGroupEnabled) {
   bench.start();
   for (var i = 0; i < n; i++) {
     categoryGroupEnabled('foo');
@@ -55,19 +48,28 @@ function doCategoryGroupEnabled(n) {
 }
 
 function main({ n, method }) {
+  const { internalBinding } = require('internal/test/binding');
+
+  const {
+    trace,
+    isTraceCategoryEnabled,
+    emit,
+    categoryGroupEnabled
+  } = internalBinding('trace_events');
+
   switch (method) {
     case '':
     case 'trace':
-      doTrace(n);
+      doTrace(n, trace);
       break;
     case 'emit':
-      doEmit(n);
+      doEmit(n, emit);
       break;
     case 'isTraceCategoryEnabled':
-      doIsTraceCategoryEnabled(n);
+      doIsTraceCategoryEnabled(n, isTraceCategoryEnabled);
       break;
     case 'categoryGroupEnabled':
-      doCategoryGroupEnabled(n);
+      doCategoryGroupEnabled(n, categoryGroupEnabled);
       break;
     default:
       throw new Error(`Unexpected method "${method}"`);

lib/internal/bootstrap/node.js

@@ -100,7 +100,7 @@
 
 
     {
-      const traceEvents = process.binding('trace_events');
+      const traceEvents = internalBinding('trace_events');
       const traceEventCategory = 'node,node.async_hooks';
 
       if (traceEvents.categoryGroupEnabled(traceEventCategory)) {

lib/trace_events.js

@@ -16,7 +16,8 @@ const {
 if (!hasTracing)
   throw new ERR_TRACE_EVENTS_UNAVAILABLE();
 
-const { CategorySet, getEnabledCategories } = process.binding('trace_events');
+const { internalBinding } = require('internal/bootstrap/loaders');
+const { CategorySet, getEnabledCategories } = internalBinding('trace_events');
 const { customInspectSymbol } = require('internal/util');
 const { format } = require('util');
 

src/node_trace_events.cc

@@ -257,4 +257,4 @@ void Initialize(Local<Object> target,
 
 }  // namespace node
 
-NODE_BUILTIN_MODULE_CONTEXT_AWARE(trace_events, node::Initialize)
+NODE_MODULE_CONTEXT_AWARE_INTERNAL(trace_events, node::Initialize)

test/parallel/test-trace-events-binding.js

@@ -8,18 +8,16 @@ if (!common.isMainThread)
   common.skip('process.chdir is not available in Workers');
 
 const CODE = `
-  process.binding("trace_events").emit(
-    'b'.charCodeAt(0), 'custom',
-    'type-value', 10, 'extra-value', 20);
-  process.binding("trace_events").emit(
-    'b'.charCodeAt(0), 'custom',
-    'type-value', 20, 'first-value', 20, 'second-value', 30);
-  process.binding("trace_events").emit(
-    'b'.charCodeAt(0), 'custom',
-    'type-value', 30);
-  process.binding("trace_events").emit(
-    'b'.charCodeAt(0), 'missing',
-    'type-value', 10, 'extra-value', 20);
+  const { internalBinding } = require('internal/test/binding');
+  const { emit } = internalBinding('trace_events');
+  emit('b'.charCodeAt(0), 'custom',
+       'type-value', 10, 'extra-value', 20);
+  emit('b'.charCodeAt(0), 'custom',
+       'type-value', 20, 'first-value', 20, 'second-value', 30);
+  emit('b'.charCodeAt(0), 'custom',
+       'type-value', 30);
+  emit('b'.charCodeAt(0), 'missing',
+       'type-value', 10, 'extra-value', 20);
 `;
 const FILE_NAME = 'node_trace.1.log';
 
@@ -29,6 +27,7 @@ process.chdir(tmpdir.path);
 
 const proc = cp.spawn(process.execPath,
                       [ '--trace-event-categories', 'custom',
+                        '--expose-internals',
                         '-e', CODE ]);
 
 proc.once('exit', common.mustCall(() => {

test/parallel/test-trace-events-category-used.js

@@ -6,17 +6,23 @@ const cp = require('child_process');
 if (!common.isMainThread)
   common.skip('process.chdir is not available in Workers');
 
-const CODE = `console.log(
-  process.binding("trace_events").categoryGroupEnabled("custom")
-);`;
+const CODE = `
+  const { internalBinding } = require('internal/test/binding');
+  const { categoryGroupEnabled } = internalBinding('trace_events');
+  console.log(
+    categoryGroupEnabled("custom")
+  );
+`;
 
 const tmpdir = require('../common/tmpdir');
 tmpdir.refresh();
 process.chdir(tmpdir.path);
 
 const procEnabled = cp.spawn(
   process.execPath,
-  [ '--trace-event-categories', 'custom', '-e', CODE ]
+  [ '--trace-event-categories', 'custom',
+    '--expose-internals',
+    '-e', CODE ]
 );
 let procEnabledOutput = '';
 
@@ -28,7 +34,9 @@ procEnabled.once('exit', common.mustCall(() => {
 
 const procDisabled = cp.spawn(
   process.execPath,
-  [ '--trace-event-categories', 'other', '-e', CODE ]
+  [ '--trace-event-categories', 'other',
+    '--expose-internals',
+    '-e', CODE ]
 );
 let procDisabledOutput = '';