[Interpreter] Introduce InterpreterCompilationJob

src/compiler.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler.h"
 
 #include <algorithm>
 #include <memory>
 
 #include "src/asmjs/asm-js.h"
@@ skipping 222 matching lines @@
              : SourcePositionTableBuilder::RECORD_SOURCE_POSITIONS;
 }
 
 bool CompilationInfo::ExpectsJSReceiverAsReceiver() {
   return is_sloppy(parse_info()->language_mode()) && !parse_info()->is_native();
 }
 
 // ----------------------------------------------------------------------------
 // Implementation of CompilationJob
 
-CompilationJob::Status CompilationJob::CreateGraph() {
+CompilationJob::Status CompilationJob::PrepareJob() {
+  DCHECK(ThreadId::Current().Equals(info()->isolate()->thread_id()));
   DisallowJavascriptExecution no_js(isolate());
-  DCHECK(info()->IsOptimizing());
 
-  if (FLAG_trace_opt) {
+  if (FLAG_trace_opt && info()->IsOptimizing()) {
     OFStream os(stdout);
     os << "[compiling method " << Brief(*info()->closure()) << " using "
        << compiler_name_;
     if (info()->is_osr()) os << " OSR";
     os << "]" << std::endl;
   }
 
   // Delegate to the underlying implementation.
-  DCHECK_EQ(SUCCEEDED, last_status());
-  ScopedTimer t(&time_taken_to_create_graph_);
-  return SetLastStatus(CreateGraphImpl());
+  DCHECK(state() == State::kReadyToPrepare);
+  ScopedTimer t(&time_taken_to_prepare_);
+  return UpdateState(PrepareJobImpl(), State::kReadyToExecute);
 }
 
-CompilationJob::Status CompilationJob::OptimizeGraph() {
+CompilationJob::Status CompilationJob::ExecuteJob() {
   DisallowHeapAllocation no_allocation;
   DisallowHandleAllocation no_handles;
   DisallowHandleDereference no_deref;
   DisallowCodeDependencyChange no_dependency_change;
 
   // Delegate to the underlying implementation.
-  DCHECK_EQ(SUCCEEDED, last_status());
-  ScopedTimer t(&time_taken_to_optimize_);
-  return SetLastStatus(OptimizeGraphImpl());
+  DCHECK(state() == State::kReadyToExecute);
+  ScopedTimer t(&time_taken_to_execute_);
+  return UpdateState(ExecuteJobImpl(), State::kReadyToFinalize);
 }
 
-CompilationJob::Status CompilationJob::GenerateCode() {
+CompilationJob::Status CompilationJob::FinalizeJob() {
+  DCHECK(ThreadId::Current().Equals(info()->isolate()->thread_id()));
   DisallowCodeDependencyChange no_dependency_change;
   DisallowJavascriptExecution no_js(isolate());
   DCHECK(!info()->dependencies()->HasAborted());
 
   // Delegate to the underlying implementation.
-  DCHECK_EQ(SUCCEEDED, last_status());
-  ScopedTimer t(&time_taken_to_codegen_);
-  return SetLastStatus(GenerateCodeImpl());
+  DCHECK(state() == State::kReadyToFinalize);
+  ScopedTimer t(&time_taken_to_finalize_);
+  return UpdateState(FinalizeJobImpl(), State::kSucceeded);
 }
 
-
 namespace {
 
 void AddWeakObjectToCodeDependency(Isolate* isolate, Handle<HeapObject> object,
                                    Handle<Code> code) {
   Handle<WeakCell> cell = Code::WeakCellFor(code);
   Heap* heap = isolate->heap();
   if (heap->InNewSpace(*object)) {
     heap->AddWeakNewSpaceObjectToCodeDependency(object, cell);
   } else {
     Handle<DependentCode> dep(heap->LookupWeakObjectToCodeDependency(object));
@@ skipping 39 matching lines @@
     }
     Map::AddDependentCode(map, DependentCode::kWeakCodeGroup, code);
   }
   for (Handle<HeapObject> object : objects) {
     AddWeakObjectToCodeDependency(isolate, object, code);
   }
   code->set_can_have_weak_objects(true);
 }
 
 void CompilationJob::RecordOptimizationStats() {
+  DCHECK(info()->IsOptimizing());
   Handle<JSFunction> function = info()->closure();
   if (!function->IsOptimized()) {
     // Concurrent recompilation and OSR may race.  Increment only once.
     int opt_count = function->shared()->opt_count();
     function->shared()->set_opt_count(opt_count + 1);
   }
-  double ms_creategraph = time_taken_to_create_graph_.InMillisecondsF();
-  double ms_optimize = time_taken_to_optimize_.InMillisecondsF();
-  double ms_codegen = time_taken_to_codegen_.InMillisecondsF();
+  double ms_creategraph = time_taken_to_prepare_.InMillisecondsF();
+  double ms_optimize = time_taken_to_execute_.InMillisecondsF();
+  double ms_codegen = time_taken_to_finalize_.InMillisecondsF();
   if (FLAG_trace_opt) {
     PrintF("[optimizing ");
     function->ShortPrint();
     PrintF(" - took %0.3f, %0.3f, %0.3f ms]\n", ms_creategraph, ms_optimize,
            ms_codegen);
   }
   if (FLAG_trace_opt_stats) {
     static double compilation_time = 0.0;
     static int compiled_functions = 0;
     static int code_size = 0;
 
     compilation_time += (ms_creategraph + ms_optimize + ms_codegen);
     compiled_functions++;
     code_size += function->shared()->SourceSize();
     PrintF("Compiled: %d functions with %d byte source size in %fms.\n",
-           compiled_functions,
-           code_size,
-           compilation_time);
+           compiled_functions, code_size, compilation_time);
   }
   if (FLAG_hydrogen_stats) {
-    isolate()->GetHStatistics()->IncrementSubtotals(time_taken_to_create_graph_,
-                                                    time_taken_to_optimize_,
-                                                    time_taken_to_codegen_);
+    isolate()->GetHStatistics()->IncrementSubtotals(time_taken_to_prepare_,
+                                                    time_taken_to_execute_,
+                                                    time_taken_to_finalize_);
   }
 }
 
 // ----------------------------------------------------------------------------
 // Local helper methods that make up the compilation pipeline.
 
 namespace {
 
 bool IsEvalToplevel(Handle<SharedFunctionInfo> shared) {
   return shared->is_toplevel() && shared->script()->IsScript() &&
@@ skipping 280 matching lines @@
   }
 
   JSFunction::EnsureLiterals(info->closure());
 
   TimerEventScope<TimerEventRecompileSynchronous> timer(isolate);
   RuntimeCallTimerScope runtimeTimer(isolate,
                                      &RuntimeCallStats::RecompileSynchronous);
   TRACE_EVENT_RUNTIME_CALL_STATS_TRACING_SCOPED(
       isolate, &tracing::TraceEventStatsTable::RecompileSynchronous);
 
-  if (job->CreateGraph() != CompilationJob::SUCCEEDED ||
-      job->OptimizeGraph() != CompilationJob::SUCCEEDED ||
-      job->GenerateCode() != CompilationJob::SUCCEEDED) {
+  if (job->PrepareJob() != CompilationJob::SUCCEEDED ||
+      job->ExecuteJob() != CompilationJob::SUCCEEDED ||
+      job->FinalizeJob() != CompilationJob::SUCCEEDED) {
     if (FLAG_trace_opt) {
       PrintF("[aborted optimizing ");
       info->closure()->ShortPrint();
       PrintF(" because: %s]\n", GetBailoutReason(info->bailout_reason()));
     }
     return false;
   }
 
   // Success!
   job->RecordOptimizationStats();
@@ skipping 40 matching lines @@
   // Reopen handles in the new CompilationHandleScope.
   info->ReopenHandlesInNewHandleScope();
   info->parse_info()->ReopenHandlesInNewHandleScope();
 
   TimerEventScope<TimerEventRecompileSynchronous> timer(info->isolate());
   RuntimeCallTimerScope runtimeTimer(info->isolate(),
                                      &RuntimeCallStats::RecompileSynchronous);
   TRACE_EVENT_RUNTIME_CALL_STATS_TRACING_SCOPED(
       isolate, &tracing::TraceEventStatsTable::RecompileSynchronous);
 
-  if (job->CreateGraph() != CompilationJob::SUCCEEDED) return false;
+  if (job->PrepareJob() != CompilationJob::SUCCEEDED) return false;
   isolate->optimizing_compile_dispatcher()->QueueForOptimization(job);
 
   if (FLAG_trace_concurrent_recompilation) {
     PrintF("  ** Queued ");
     info->closure()->ShortPrint();
     PrintF(" for concurrent optimization.\n");
   }
   return true;
 }
 
@@ skipping 1155 matching lines @@
   Handle<SharedFunctionInfo> shared = info->shared_info();
   shared->code()->set_profiler_ticks(0);
 
   DCHECK(!shared->HasDebugInfo());
 
   // 1) Optimization on the concurrent thread may have failed.
   // 2) The function may have already been optimized by OSR.  Simply continue.
   //    Except when OSR already disabled optimization for some reason.
   // 3) The code may have already been invalidated due to dependency change.
   // 4) Code generation may have failed.
-  if (job->last_status() == CompilationJob::SUCCEEDED) {
+  if (job->state() == CompilationJob::State::kReadyToFinalize) {
     if (shared->optimization_disabled()) {
       job->RetryOptimization(kOptimizationDisabled);
     } else if (info->dependencies()->HasAborted()) {
       job->RetryOptimization(kBailedOutDueToDependencyChange);
-    } else if (job->GenerateCode() == CompilationJob::SUCCEEDED) {
+    } else if (job->FinalizeJob() == CompilationJob::SUCCEEDED) {
       job->RecordOptimizationStats();
       RecordFunctionCompilation(CodeEventListener::LAZY_COMPILE_TAG, info);
       if (shared->SearchOptimizedCodeMap(info->context()->native_context(),
                                          info->osr_ast_id()).code == nullptr) {
         InsertCodeIntoOptimizedCodeMap(info);
       }
       if (FLAG_trace_opt) {
         PrintF("[completed optimizing ");
         info->closure()->ShortPrint();
         PrintF("]\n");
       }
       info->closure()->ReplaceCode(*info->code());
       return;
     }
   }
 
-  DCHECK(job->last_status() != CompilationJob::SUCCEEDED);
+  DCHECK(job->state() == CompilationJob::State::kFailed);
   if (FLAG_trace_opt) {
     PrintF("[aborted optimizing ");
     info->closure()->ShortPrint();
     PrintF(" because: %s]\n", GetBailoutReason(info->bailout_reason()));
   }
   info->closure()->ReplaceCode(shared->code());
 }
 
 void Compiler::PostInstantiation(Handle<JSFunction> function,
                                  PretenureFlag pretenure) {
@@ skipping 16 matching lines @@
     DCHECK(shared->is_compiled());
     function->set_literals(cached.literals);
   } else if (shared->is_compiled()) {
     // TODO(mvstanton): pass pretenure flag to EnsureLiterals.
     JSFunction::EnsureLiterals(function);
   }
 }
 
 }  // namespace internal
 }  // namespace v8