First round of dead file removal

experimental/conways_life/locking_image_data.h

-// Copyright (c) 2011 The Native Client Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef LOCKING_IMAGE_DATA_H_
-#define LOCKING_IMAGE_DATA_H_
-
-#include "experimental/conways_life/threading/pthread_ext.h"
-#include "ppapi/cpp/image_data.h"
-#include "ppapi/cpp/instance.h"
-#include "ppapi/cpp/size.h"
-
-namespace life {
-
-// An extension of ImageData that can protect direct pixel access thorugh a
-// mutex lock.
-class LockingImageData : public pp::ImageData {
- public:
-  LockingImageData(pp::Instance* instance,
-                   PP_ImageDataFormat format,
-                   const pp::Size& size,
-                   bool init_to_zero)
-      : ImageData(instance, format, size, init_to_zero) {
-    pthread_mutex_init(&pixel_buffer_mutex_, NULL);
-  }
-
-  virtual ~LockingImageData() {
-    UnlockPixels();
-    pthread_mutex_destroy(&pixel_buffer_mutex_);
-  }
-
-  // Acquire the lock in |pixel_owner_| that governs the pixel buffer.  Return
-  // a pointer to the locked pixel buffer if successful; return NULL otherwise.
-  uint32_t* LockPixels() {
-    uint32_t* pixels = NULL;
-    if (pthread_mutex_lock(&pixel_buffer_mutex_) == PTHREAD_MUTEX_SUCCESS) {
-      pixels = PixelBufferNoLock();
-    }
-    return pixels;
-  }
-
-  // Release the lock governing the pixel bugger in |pixel_owner_|.
-  void UnlockPixels() {
-    pthread_mutex_unlock(&pixel_buffer_mutex_);
-  }
-
-  uint32_t* PixelBufferNoLock() {
-    return is_null() ? NULL : static_cast<uint32_t*>(data());
-  }
-
- private:
-  mutable pthread_mutex_t pixel_buffer_mutex_;
-};
-}  // namespace life
-
-#endif  // LOCKING_IMAGE_DATA_H_
-