module: implement NODE_COMPILE_CACHE for automatic on-disk code caching

common.gypi

@@ -37,7 +37,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.9',
+    'v8_embedder_string': '-node.10',
 
     ##### V8 defaults for Node.js #####
 

deps/v8/src/codegen/compiler.cc

@@ -1720,10 +1720,8 @@ BackgroundCompileTask::BackgroundCompileTask(
 
 BackgroundCompileTask::~BackgroundCompileTask() = default;
 
-namespace {
-
 void SetScriptFieldsFromDetails(Isolate* isolate, Tagged<Script> script,
-                                ScriptDetails script_details,
+                                const ScriptDetails& script_details,
                                 DisallowGarbageCollection* no_gc) {
   Handle<Object> script_name;
   if (script_details.name_obj.ToHandle(&script_name)) {
@@ -1749,6 +1747,8 @@ void SetScriptFieldsFromDetails(Isolate* isolate, Tagged<Script> script,
   }
 }
 
+namespace {
+
 #ifdef ENABLE_SLOW_DCHECKS
 
 // A class which traverses the object graph for a newly compiled Script and
@@ -2450,10 +2450,10 @@ void BackgroundDeserializeTask::MergeWithExistingScript() {
 
 MaybeHandle<SharedFunctionInfo> BackgroundDeserializeTask::Finish(
     Isolate* isolate, Handle<String> source,
-    ScriptOriginOptions origin_options) {
+    const ScriptDetails& script_details) {
   return CodeSerializer::FinishOffThreadDeserialize(
       isolate, std::move(off_thread_data_), &cached_data_, source,
-      origin_options, &background_merge_task_);
+      script_details, &background_merge_task_);
 }
 
 // ----------------------------------------------------------------------------
@@ -3630,8 +3630,8 @@ MaybeHandle<SharedFunctionInfo> GetSharedFunctionInfoForScriptImpl(
                    "V8.CompileDeserialize");
       if (deserialize_task) {
         // If there's a cache consume task, finish it.
-        maybe_result = deserialize_task->Finish(isolate, source,
-                                                script_details.origin_options);
+        maybe_result =
+            deserialize_task->Finish(isolate, source, script_details);
         // It is possible at this point that there is a Script object for this
         // script in the compilation cache (held in the variable maybe_script),
         // which does not match maybe_result->script(). This could happen any of
@@ -3652,8 +3652,7 @@ MaybeHandle<SharedFunctionInfo> GetSharedFunctionInfoForScriptImpl(
         // would be non-trivial.
       } else {
         maybe_result = CodeSerializer::Deserialize(
-            isolate, cached_data, source, script_details.origin_options,
-            maybe_script);
+            isolate, cached_data, source, script_details, maybe_script);
       }
 
       bool consuming_code_cache_succeeded = false;
@@ -3829,7 +3828,7 @@ MaybeHandle<JSFunction> Compiler::GetWrappedFunction(
     TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"),
                  "V8.CompileDeserialize");
     maybe_result = CodeSerializer::Deserialize(isolate, cached_data, source,
-                                               script_details.origin_options);
+                                               script_details);
     bool consuming_code_cache_succeeded = false;
     if (maybe_result.ToHandle(&result)) {
       is_compiled_scope = result->is_compiled_scope(isolate);

deps/v8/src/codegen/compiler.h

@@ -682,7 +682,7 @@ class V8_EXPORT_PRIVATE BackgroundDeserializeTask {
 
   MaybeHandle<SharedFunctionInfo> Finish(Isolate* isolate,
                                          Handle<String> source,
-                                         ScriptOriginOptions origin_options);
+                                         const ScriptDetails& script_details);
 
   bool rejected() const { return cached_data_.rejected(); }
 

deps/v8/src/codegen/script-details.h

@@ -35,6 +35,9 @@ struct ScriptDetails {
   const ScriptOriginOptions origin_options;
 };
 
+void SetScriptFieldsFromDetails(Isolate* isolate, Tagged<Script> script,
+                                const ScriptDetails& script_details,
+                                DisallowGarbageCollection* no_gc);
 }  // namespace internal
 }  // namespace v8
 

deps/v8/src/snapshot/code-serializer.cc

@@ -314,12 +314,12 @@ class StressOffThreadDeserializeThread final : public base::Thread {
         CodeSerializer::StartDeserializeOffThread(&local_isolate, cached_data_);
   }
 
-  MaybeHandle<SharedFunctionInfo> Finalize(Isolate* isolate,
-                                           Handle<String> source,
-                                           ScriptOriginOptions origin_options) {
+  MaybeHandle<SharedFunctionInfo> Finalize(
+      Isolate* isolate, Handle<String> source,
+      const ScriptDetails& script_details) {
     return CodeSerializer::FinishOffThreadDeserialize(
         isolate, std::move(off_thread_data_), cached_data_, source,
-        origin_options);
+        script_details);
   }
 
  private:
@@ -330,7 +330,8 @@ class StressOffThreadDeserializeThread final : public base::Thread {
 
 void FinalizeDeserialization(Isolate* isolate,
                              Handle<SharedFunctionInfo> result,
-                             const base::ElapsedTimer& timer) {
+                             const base::ElapsedTimer& timer,
+                             const ScriptDetails& script_details) {
   // Devtools can report time in this function as profiler overhead, since none
   // of the following tasks would need to happen normally.
   TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"),
@@ -343,10 +344,16 @@ void FinalizeDeserialization(Isolate* isolate,
                                              log_code_creation);
   }
 
+  Handle<Script> script(Script::cast(result->script()), isolate);
+  // Reset the script details, including host-defined options.
+  {
+    DisallowGarbageCollection no_gc;
+    SetScriptFieldsFromDetails(isolate, *script, script_details, &no_gc);
+  }
+
   bool needs_source_positions = isolate->NeedsSourcePositions();
   if (!log_code_creation && !needs_source_positions) return;
 
-  Handle<Script> script(Script::cast(result->script()), isolate);
   if (needs_source_positions) {
     Script::InitLineEnds(isolate, script);
   }
@@ -430,13 +437,13 @@ const char* ToString(SerializedCodeSanityCheckResult result) {
 
 MaybeHandle<SharedFunctionInfo> CodeSerializer::Deserialize(
     Isolate* isolate, AlignedCachedData* cached_data, Handle<String> source,
-    ScriptOriginOptions origin_options,
+    const ScriptDetails& script_details,
     MaybeHandle<Script> maybe_cached_script) {
   if (v8_flags.stress_background_compile) {
     StressOffThreadDeserializeThread thread(isolate, cached_data);
     CHECK(thread.Start());
     thread.Join();
-    return thread.Finalize(isolate, source, origin_options);
+    return thread.Finalize(isolate, source, script_details);
     // TODO(leszeks): Compare off-thread deserialized data to on-thread.
   }
 
@@ -451,7 +458,7 @@ MaybeHandle<SharedFunctionInfo> CodeSerializer::Deserialize(
       SerializedCodeSanityCheckResult::kSuccess;
   const SerializedCodeData scd = SerializedCodeData::FromCachedData(
       isolate, cached_data,
-      SerializedCodeData::SourceHash(source, origin_options),
+      SerializedCodeData::SourceHash(source, script_details.origin_options),
       &sanity_check_result);
   if (sanity_check_result != SerializedCodeSanityCheckResult::kSuccess) {
     if (v8_flags.profile_deserialization) {
@@ -498,7 +505,7 @@ MaybeHandle<SharedFunctionInfo> CodeSerializer::Deserialize(
     PrintF("[Deserializing from %d bytes took %0.3f ms]\n", length, ms);
   }
 
-  FinalizeDeserialization(isolate, result, timer);
+  FinalizeDeserialization(isolate, result, timer, script_details);
 
   return scope.CloseAndEscape(result);
 }
@@ -553,7 +560,7 @@ CodeSerializer::StartDeserializeOffThread(LocalIsolate* local_isolate,
 MaybeHandle<SharedFunctionInfo> CodeSerializer::FinishOffThreadDeserialize(
     Isolate* isolate, OffThreadDeserializeData&& data,
     AlignedCachedData* cached_data, Handle<String> source,
-    ScriptOriginOptions origin_options,
+    const ScriptDetails& script_details,
     BackgroundMergeTask* background_merge_task) {
   base::ElapsedTimer timer;
   if (v8_flags.profile_deserialization || v8_flags.log_function_events) {
@@ -569,7 +576,8 @@ MaybeHandle<SharedFunctionInfo> CodeSerializer::FinishOffThreadDeserialize(
       data.sanity_check_result;
   const SerializedCodeData scd =
       SerializedCodeData::FromPartiallySanityCheckedCachedData(
-          cached_data, SerializedCodeData::SourceHash(source, origin_options),
+          cached_data,
+          SerializedCodeData::SourceHash(source, script_details.origin_options),
           &sanity_check_result);
   if (sanity_check_result != SerializedCodeSanityCheckResult::kSuccess) {
     // The only case where the deserialization result could exist despite a
@@ -642,7 +650,7 @@ MaybeHandle<SharedFunctionInfo> CodeSerializer::FinishOffThreadDeserialize(
            length, ms);
   }
 
-  FinalizeDeserialization(isolate, result, timer);
+  FinalizeDeserialization(isolate, result, timer, script_details);
 
   DCHECK(!background_merge_task ||
          !background_merge_task->HasPendingForegroundWork());

deps/v8/src/snapshot/code-serializer.h

@@ -6,6 +6,7 @@
 #define V8_SNAPSHOT_CODE_SERIALIZER_H_
 
 #include "src/base/macros.h"
+#include "src/codegen/script-details.h"
 #include "src/snapshot/serializer.h"
 #include "src/snapshot/snapshot-data.h"
 
@@ -81,7 +82,7 @@ class CodeSerializer : public Serializer {
 
   V8_WARN_UNUSED_RESULT static MaybeHandle<SharedFunctionInfo> Deserialize(
       Isolate* isolate, AlignedCachedData* cached_data, Handle<String> source,
-      ScriptOriginOptions origin_options,
+      const ScriptDetails& script_details,
       MaybeHandle<Script> maybe_cached_script = {});
 
   V8_WARN_UNUSED_RESULT static OffThreadDeserializeData
@@ -92,7 +93,7 @@ class CodeSerializer : public Serializer {
   FinishOffThreadDeserialize(
       Isolate* isolate, OffThreadDeserializeData&& data,
       AlignedCachedData* cached_data, Handle<String> source,
-      ScriptOriginOptions origin_options,
+      const ScriptDetails& script_details,
       BackgroundMergeTask* background_merge_task = nullptr);
 
   uint32_t source_hash() const { return source_hash_; }