drm_hwcomposer: Remove utils/worker from the project

utils/worker is no longer used and can be removed.

Change-Id: I5fc9bd2b3b8b0375622ee2446044d3b893756b30
Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>

utils/Worker.cpp

@@ -1,93 +0,0 @@
-/*
- * Copyright (C) 2015-2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "Worker.h"
-
-#include <sys/prctl.h>
-#include <sys/resource.h>
-
-namespace android {
-
-Worker::Worker(const char *name, int priority)
-    : name_(name), priority_(priority), exit_(false), initialized_(false) {
-}
-
-Worker::~Worker() {
-  Exit();
-}
-
-int Worker::InitWorker() {
-  const std::lock_guard<std::mutex> lk(mutex_);
-  if (initialized())
-    return -EALREADY;
-
-  thread_ = std::make_unique<std::thread>(&Worker::InternalRoutine, this);
-  initialized_ = true;
-  exit_ = false;
-
-  return 0;
-}
-
-void Worker::Exit() {
-  std::unique_lock<std::mutex> lk(mutex_);
-  exit_ = true;
-  if (initialized()) {
-    lk.unlock();
-    cond_.notify_all();
-    thread_->join();
-    initialized_ = false;
-  }
-}
-
-int Worker::WaitForSignalOrExitLocked(int64_t max_nanoseconds) {
-  int ret = 0;
-  if (should_exit())
-    return -EINTR;
-
-  std::unique_lock<std::mutex> lk(mutex_, std::adopt_lock);
-  if (max_nanoseconds < 0) {
-    cond_.wait(lk);
-  } else if (std::cv_status::timeout ==
-             cond_.wait_for(lk, std::chrono::nanoseconds(max_nanoseconds))) {
-    ret = -ETIMEDOUT;
-  }
-
-  // exit takes precedence on timeout
-  if (should_exit())
-    ret = -EINTR;
-
-  // release leaves mutex locked when going out of scope
-  lk.release();
-
-  return ret;
-}
-
-void Worker::InternalRoutine() {
-  setpriority(PRIO_PROCESS, 0, priority_);
-  prctl(PR_SET_NAME, name_.c_str());
-
-  std::unique_lock<std::mutex> lk(mutex_, std::defer_lock);
-
-  while (true) {
-    lk.lock();
-    if (should_exit())
-      return;
-    lk.unlock();
-
-    Routine();
-  }
-}
-}  // namespace android

utils/Worker.h

@@ -1,79 +0,0 @@
-/*
- * Copyright (C) 2015-2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <condition_variable>
-#include <cstdint>
-#include <cstdlib>
-#include <mutex>
-#include <string>
-#include <thread>
-
-namespace android {
-
-class Worker {
- public:
-  void Lock() {
-    mutex_.lock();
-  }
-  void Unlock() {
-    mutex_.unlock();
-  }
-
-  void Signal() {
-    cond_.notify_all();
-  }
-  void Exit();
-
-  bool initialized() const {
-    return initialized_;
-  }
-
-  virtual ~Worker();
-
- protected:
-  Worker(const char *name, int priority);
-
-  int InitWorker();
-  virtual void Routine() = 0;
-
-  /*
-   * Must be called with the lock acquired. max_nanoseconds may be negative to
-   * indicate infinite timeout, otherwise it indicates the maximum time span to
-   * wait for a signal before returning.
-   * Returns -EINTR if interrupted by exit request, or -ETIMEDOUT if timed out
-   */
-  int WaitForSignalOrExitLocked(int64_t max_nanoseconds = -1);
-
-  bool should_exit() const {
-    return exit_;
-  }
-
-  std::mutex mutex_;
-  std::condition_variable cond_;
-
- private:
-  void InternalRoutine();
-
-  std::string name_;
-  int priority_;
-
-  std::unique_ptr<std::thread> thread_;
-  bool exit_;
-  bool initialized_;
-};
-}  // namespace android