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diff --git a/ioreplay/src/init/ithread.h b/ioreplay/src/init/ithread.h
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+// Copyright 2018 Mimecast Ltd.
+//
+// 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.
+
+#ifndef ITHREAD_H
+#define ITHREAD_H
+
+#include "../defaults.h"
+#include "../datas/rbuffer.h"
+
+#include "init.h"
+#include "itask.h"
+
+#include <pthread.h>
+
+/**
+ * @brief Definition of an init thread
+ *
+ */
+typedef struct ithread_s_ {
+    pthread_t pthread; /**< We run the init tasks in concurrent pthreads */
+    rbuffer_s *queue; /**< The thread's task queue */
+    init_s *init; /**< The responsible init object */
+    bool terminate; /**< Indicates that thread can terminate */
+} ithread_s;
+
+/**
+ * @brief Creates a new thread object
+ *
+ * @param i The init object
+ * @return The new thread object
+ */
+ithread_s* ithread_new(init_s *i);
+
+/**
+ * @brief Terminates the thread
+ *
+ * This function waits (via join) for the pthread to complete all its
+ * current tasks from the queue.
+ *
+ * @param t The thread object
+ */
+void ithread_terminate(ithread_s* t);
+
+/**
+ * @brief Destroys the thread object
+ *
+ * @param t The thread object
+ */
+void ithread_destroy(ithread_s* t);
+
+/**
+ * @brief Executes the init task
+ *
+ * @param t The thread object
+ * @param task The task object
+ */
+void ithread_run_task(ithread_s* t, itask_s *task);
+
+/**
+ * @brief Starts the POSIX thread
+ *
+ * @param t The responsible thread object
+ */
+void ithread_start(ithread_s *t);
+
+/**
+ * @brief Entry point of the POSIX thread
+ *
+ * @param data Data passed to the pthread
+ * @return Always NULL on success
+ */
+
+void* ithread_pthread_start(void *data);
+
+#endif // ITHREAD_H