build: improve embedded code-cache detection

PR-URL: https://github.com/nodejs/node/pull/27311
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>

configure.py

@@ -1051,7 +1051,9 @@ def configure_node(o):
     o['variables']['debug_nghttp2'] = 'false'
 
   o['variables']['node_no_browser_globals'] = b(options.no_browser_globals)
-  o['variables']['node_code_cache_path'] = 'yes'
+  # TODO(refack): fix this when implementing embedded code-cache when cross-compiling.
+  if o['variables']['want_separate_host_toolset'] == 0:
+    o['variables']['node_code_cache_path'] = 'yes'
   o['variables']['node_shared'] = b(options.shared)
   node_module_version = getmoduleversion.get_version()
 

lib/internal/bootstrap/node.js

@@ -244,7 +244,8 @@ Object.defineProperty(process, 'features', {
     tls_alpn: hasOpenSSL,
     tls_sni: hasOpenSSL,
     tls_ocsp: hasOpenSSL,
-    tls: hasOpenSSL
+    tls: hasOpenSSL,
+    cached_builtins: config.hasCachedBuiltins,
   }
 });
 

src/node_code_cache_stub.cc

@@ -1,4 +1,3 @@
-
 #include "node_native_module_env.h"
 
 // This is supposed to be generated by tools/generate_code_cache.js
@@ -7,6 +6,8 @@
 namespace node {
 namespace native_module {
 
+const bool has_code_cache = false;
+
 // The generated source code would insert <std::string, UnionString> pairs
 // into NativeModuleLoader::instance.code_cache_.
 void NativeModuleEnv::InitializeCodeCache() {}

src/node_config.cc

@@ -1,6 +1,7 @@
 #include "env-inl.h"
 #include "node.h"
 #include "node_i18n.h"
+#include "node_native_module_env.h"
 #include "node_options.h"
 #include "util-inl.h"
 
@@ -73,11 +74,14 @@ static void Initialize(Local<Object> target,
 
   READONLY_PROPERTY(target,
                     "bits",
-                    Number::New(env->isolate(), 8 * sizeof(intptr_t)));
+                    Number::New(isolate, 8 * sizeof(intptr_t)));
 
 #if defined HAVE_DTRACE || defined HAVE_ETW
   READONLY_TRUE_PROPERTY(target, "hasDtrace");
 #endif
+
+  READONLY_PROPERTY(target, "hasCachedBuiltins",
+     v8::Boolean::New(isolate, native_module::has_code_cache));
 }  // InitConfig
 
 }  // namespace node

src/node_native_module_env.h

@@ -10,6 +10,8 @@ class Environment;
 
 namespace native_module {
 
+extern const bool has_code_cache;
+
 class NativeModuleEnv {
  public:
   static void Initialize(v8::Local<v8::Object> target,

test/parallel/test-code-cache.js

@@ -31,7 +31,7 @@ const loadedModules = process.moduleLoadList
 
 // Cross-compiled binaries do not have code cache, verifies that the builtins
 // are all compiled without cache and we are doing the bookkeeping right.
-if (process.config.variables.want_separate_host_toolset === 1) {
+if (!process.features.cached_builtins) {
   console.log('The binary is not configured with code cache');
   if (isMainThread) {
     assert.deepStrictEqual(compiledWithCache, new Set());

test/parallel/test-process-features.js

@@ -13,7 +13,8 @@ assert.deepStrictEqual(keys, new Set([
   'tls_alpn',
   'tls_sni',
   'tls_ocsp',
-  'tls'
+  'tls',
+  'cached_builtins',
 ]));
 
 for (const key of keys) {

test/sequential/test-cpu-prof.js

@@ -3,8 +3,7 @@
 // This tests that --cpu-prof, --cpu-prof-dir and --cpu-prof-name works.
 
 const common = require('../common');
-if (process.features.debug &&
+if (process.features.debug && process.features.cached_builtins) {
-  process.config.variables.node_code_cache_path === 'yes') {
   // FIXME(joyeecheung): the profiler crashes when code cache
   // is enabled in debug builds.
   common.skip('--cpu-prof does not work in debug builds with code cache');

tools/code_cache/cache_builder.cc

@@ -78,6 +78,9 @@ static std::string GenerateCodeCache(
 
 namespace node {
 namespace native_module {
+
+const bool has_code_cache = true;
+
 )";
 
   size_t total = 0;