Create compiler-scheduler subdir and move existing scheduler there

src/optimizing-compile-dispatcher.cc

Index: src/optimizing-compile-dispatcher.cc
diff --git a/src/optimizing-compile-dispatcher.cc b/src/optimizing-compile-dispatcher.cc
deleted file mode 100644
index d5059f60f54fe0d3563c122fa30c258bcf324bab..0000000000000000000000000000000000000000
--- a/src/optimizing-compile-dispatcher.cc
+++ /dev/null
@@ -1,228 +0,0 @@
-// 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/optimizing-compile-dispatcher.h"
-
-#include "src/base/atomicops.h"
-#include "src/full-codegen/full-codegen.h"
-#include "src/isolate.h"
-#include "src/tracing/trace-event.h"
-#include "src/v8.h"
-
-namespace v8 {
-namespace internal {
-
-namespace {
-
-void DisposeCompilationJob(CompilationJob* job, bool restore_function_code) {
-  if (restore_function_code) {
-    Handle<JSFunction> function = job->info()->closure();
-    function->ReplaceCode(function->shared()->code());
-    // TODO(mvstanton): We can't call ensureliterals here due to allocation,
-    // but we probably shouldn't call ReplaceCode either, as this
-    // sometimes runs on the worker thread!
-    // JSFunction::EnsureLiterals(function);
-  }
-  delete job;
-}
-
-}  // namespace
-
-
-class OptimizingCompileDispatcher::CompileTask : public v8::Task {
- public:
-  explicit CompileTask(Isolate* isolate) : isolate_(isolate) {
-    OptimizingCompileDispatcher* dispatcher =
-        isolate_->optimizing_compile_dispatcher();
-    base::LockGuard<base::Mutex> lock_guard(&dispatcher->ref_count_mutex_);
-    ++dispatcher->ref_count_;
-  }
-
-  virtual ~CompileTask() {}
-
- private:
-  // v8::Task overrides.
-  void Run() override {
-    DisallowHeapAllocation no_allocation;
-    DisallowHandleAllocation no_handles;
-    DisallowHandleDereference no_deref;
-
-    OptimizingCompileDispatcher* dispatcher =
-        isolate_->optimizing_compile_dispatcher();
-    {
-      TimerEventScope<TimerEventRecompileConcurrent> timer(isolate_);
-
-      TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8.compile"),
-                   "V8.RecompileConcurrent");
-
-      if (dispatcher->recompilation_delay_ != 0) {
-        base::OS::Sleep(base::TimeDelta::FromMilliseconds(
-            dispatcher->recompilation_delay_));
-      }
-
-      dispatcher->CompileNext(dispatcher->NextInput(true));
-    }
-    {
-      base::LockGuard<base::Mutex> lock_guard(&dispatcher->ref_count_mutex_);
-      if (--dispatcher->ref_count_ == 0) {
-        dispatcher->ref_count_zero_.NotifyOne();
-      }
-    }
-  }
-
-  Isolate* isolate_;
-
-  DISALLOW_COPY_AND_ASSIGN(CompileTask);
-};
-
-
-OptimizingCompileDispatcher::~OptimizingCompileDispatcher() {
-#ifdef DEBUG
-  {
-    base::LockGuard<base::Mutex> lock_guard(&ref_count_mutex_);
-    DCHECK_EQ(0, ref_count_);
-  }
-#endif
-  DCHECK_EQ(0, input_queue_length_);
-  DeleteArray(input_queue_);
-}
-
-CompilationJob* OptimizingCompileDispatcher::NextInput(bool check_if_flushing) {
-  base::LockGuard<base::Mutex> access_input_queue_(&input_queue_mutex_);
-  if (input_queue_length_ == 0) return NULL;
-  CompilationJob* job = input_queue_[InputQueueIndex(0)];
-  DCHECK_NOT_NULL(job);
-  input_queue_shift_ = InputQueueIndex(1);
-  input_queue_length_--;
-  if (check_if_flushing) {
-    if (static_cast<ModeFlag>(base::Acquire_Load(&mode_)) == FLUSH) {
-      AllowHandleDereference allow_handle_dereference;
-      DisposeCompilationJob(job, true);
-      return NULL;
-    }
-  }
-  return job;
-}
-
-void OptimizingCompileDispatcher::CompileNext(CompilationJob* job) {
-  if (!job) return;
-
-  // The function may have already been optimized by OSR.  Simply continue.
-  CompilationJob::Status status = job->OptimizeGraph();
-  USE(status);  // Prevent an unused-variable error.
-
-  // The function may have already been optimized by OSR.  Simply continue.
-  // Use a mutex to make sure that functions marked for install
-  // are always also queued.
-  base::LockGuard<base::Mutex> access_output_queue_(&output_queue_mutex_);
-  output_queue_.push(job);
-  isolate_->stack_guard()->RequestInstallCode();
-}
-
-
-void OptimizingCompileDispatcher::FlushOutputQueue(bool restore_function_code) {
-  for (;;) {
-    CompilationJob* job = NULL;
-    {
-      base::LockGuard<base::Mutex> access_output_queue_(&output_queue_mutex_);
-      if (output_queue_.empty()) return;
-      job = output_queue_.front();
-      output_queue_.pop();
-    }
-
-    DisposeCompilationJob(job, restore_function_code);
-  }
-}
-
-
-void OptimizingCompileDispatcher::Flush() {
-  base::Release_Store(&mode_, static_cast<base::AtomicWord>(FLUSH));
-  if (FLAG_block_concurrent_recompilation) Unblock();
-  {
-    base::LockGuard<base::Mutex> lock_guard(&ref_count_mutex_);
-    while (ref_count_ > 0) ref_count_zero_.Wait(&ref_count_mutex_);
-    base::Release_Store(&mode_, static_cast<base::AtomicWord>(COMPILE));
-  }
-  FlushOutputQueue(true);
-  if (FLAG_trace_concurrent_recompilation) {
-    PrintF("  ** Flushed concurrent recompilation queues.\n");
-  }
-}
-
-
-void OptimizingCompileDispatcher::Stop() {
-  base::Release_Store(&mode_, static_cast<base::AtomicWord>(FLUSH));
-  if (FLAG_block_concurrent_recompilation) Unblock();
-  {
-    base::LockGuard<base::Mutex> lock_guard(&ref_count_mutex_);
-    while (ref_count_ > 0) ref_count_zero_.Wait(&ref_count_mutex_);
-    base::Release_Store(&mode_, static_cast<base::AtomicWord>(COMPILE));
-  }
-
-  if (recompilation_delay_ != 0) {
-    // At this point the optimizing compiler thread's event loop has stopped.
-    // There is no need for a mutex when reading input_queue_length_.
-    while (input_queue_length_ > 0) CompileNext(NextInput());
-    InstallOptimizedFunctions();
-  } else {
-    FlushOutputQueue(false);
-  }
-}
-
-
-void OptimizingCompileDispatcher::InstallOptimizedFunctions() {
-  HandleScope handle_scope(isolate_);
-
-  for (;;) {
-    CompilationJob* job = NULL;
-    {
-      base::LockGuard<base::Mutex> access_output_queue_(&output_queue_mutex_);
-      if (output_queue_.empty()) return;
-      job = output_queue_.front();
-      output_queue_.pop();
-    }
-    CompilationInfo* info = job->info();
-    Handle<JSFunction> function(*info->closure());
-    if (function->IsOptimized()) {
-      if (FLAG_trace_concurrent_recompilation) {
-        PrintF("  ** Aborting compilation for ");
-        function->ShortPrint();
-        PrintF(" as it has already been optimized.\n");
-      }
-      DisposeCompilationJob(job, false);
-    } else {
-      Compiler::FinalizeCompilationJob(job);
-    }
-  }
-}
-
-void OptimizingCompileDispatcher::QueueForOptimization(CompilationJob* job) {
-  DCHECK(IsQueueAvailable());
-  {
-    // Add job to the back of the input queue.
-    base::LockGuard<base::Mutex> access_input_queue(&input_queue_mutex_);
-    DCHECK_LT(input_queue_length_, input_queue_capacity_);
-    input_queue_[InputQueueIndex(input_queue_length_)] = job;
-    input_queue_length_++;
-  }
-  if (FLAG_block_concurrent_recompilation) {
-    blocked_jobs_++;
-  } else {
-    V8::GetCurrentPlatform()->CallOnBackgroundThread(
-        new CompileTask(isolate_), v8::Platform::kShortRunningTask);
-  }
-}
-
-
-void OptimizingCompileDispatcher::Unblock() {
-  while (blocked_jobs_ > 0) {
-    V8::GetCurrentPlatform()->CallOnBackgroundThread(
-        new CompileTask(isolate_), v8::Platform::kShortRunningTask);
-    blocked_jobs_--;
-  }
-}
-
-
-}  // namespace internal
-}  // namespace v8