[platform] Implement a worker pool

src/libplatform/worker-thread.cc

Index: src/libplatform/worker-thread.cc
diff --git a/src/hydrogen-bch.h b/src/libplatform/worker-thread.cc
similarity index 79%
copy from src/hydrogen-bch.h
copy to src/libplatform/worker-thread.cc
index a22dacdd4229748e2735b3c0d8519c927b2f617d..cca8a9719a88d953a9d05d770e5aa6478a563e6a 100644
--- a/src/hydrogen-bch.h
+++ b/src/libplatform/worker-thread.cc
@@ -25,31 +25,32 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#ifndef V8_HYDROGEN_BCH_H_
-#define V8_HYDROGEN_BCH_H_
+#include "worker-thread.h"
 
-#include "hydrogen.h"
+// TODO(jochen): We should have our own version of checks.h.
+#include "../checks.h"
+#include "../../include/v8-platform.h"
+#include "task-queue.h"
 
 namespace v8 {
 namespace internal {
 
+WorkerThread::WorkerThread(TaskQueue* queue)
+    : Thread("V8 WorkerThread"), queue_(queue) {
+  Start();
+}
 
-class HBoundsCheckHoistingPhase : public HPhase {
- public:
-  explicit HBoundsCheckHoistingPhase(HGraph* graph)
-      : HPhase("H_Bounds checks hoisting", graph) { }
 
-  void Run() {
-    HoistRedundantBoundsChecks();
-  }
-
- private:
-  void HoistRedundantBoundsChecks();
+WorkerThread::~WorkerThread() {
+  Join();
+}
 
-  DISALLOW_COPY_AND_ASSIGN(HBoundsCheckHoistingPhase);
-};
 
+void WorkerThread::Run() {
+  while (Task* task = queue_->GetNext()) {
+    task->Run();
+    delete task;
+  }
+}
 
 } }  // namespace v8::internal
-
-#endif  // V8_HYDROGEN_BCE_H_