upload android base code part6

android/system/extras/memory_replay/Thread.cpp

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2015 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 <pthread.h>
+
+#include "Action.h"
+#include "Thread.h"
+
+Thread::Thread() {
+  pthread_cond_init(&cond_, nullptr);
+}
+
+Thread::~Thread() {
+  pthread_cond_destroy(&cond_);
+}
+
+void Thread::WaitForReady() {
+  pthread_mutex_lock(&mutex_);
+  while (pending_) {
+    pthread_cond_wait(&cond_, &mutex_);
+  }
+  pthread_mutex_unlock(&mutex_);
+}
+
+void Thread::WaitForPending() {
+  pthread_mutex_lock(&mutex_);
+  while (!pending_) {
+    pthread_cond_wait(&cond_, &mutex_);
+  }
+  pthread_mutex_unlock(&mutex_);
+}
+
+void Thread::SetPending() {
+  pthread_mutex_lock(&mutex_);
+  pending_ = true;
+  pthread_mutex_unlock(&mutex_);
+  pthread_cond_signal(&cond_);
+}
+
+void Thread::ClearPending() {
+  pthread_mutex_lock(&mutex_);
+  pending_ = false;
+  pthread_mutex_unlock(&mutex_);
+  pthread_cond_signal(&cond_);
+}
+
+Action* Thread::CreateAction(uintptr_t key_pointer, const char* type, const char* line) {
+  return Action::CreateAction(key_pointer, type, line, action_memory_);
+}