diff --git a/include/kernel.h b/include/kernel.h
new file mode 100644
index 0000000..1ca0240
--- /dev/null
+++ b/include/kernel.h
@@ -0,0 +1,6 @@
+#pragma once
+
+struct kernel_t
+{
+
+};
\ No newline at end of file
diff --git a/include/priorityqueue.h b/include/priorityqueue.h
new file mode 100644
index 0000000..f080232
--- /dev/null
+++ b/include/priorityqueue.h
@@ -0,0 +1,55 @@
+#pragma once
+
+#include "process.h"
+#include <stddef.h>
+
+/**
+ * @brief 
+ * 
+ */
+struct priority_queue_t
+{
+    /**
+     * @brief A pointer to the heap described by this structure.
+     * 
+     */
+    struct process_t **heap;
+
+    /**
+     * @brief The current number of elements stored in the heap.
+     * 
+     */
+    size_t size;
+
+    /**
+     * @brief The maximum number of elements that the heap can currently hold.
+     * 
+     */
+    size_t capacity;
+};
+
+/**
+ * @brief 
+ * 
+ * @param queue 
+ * @return struct process_t* 
+ */
+struct process_t *extract_min(struct priority_queue_t *queue);
+
+/**
+ * @brief 
+ * 
+ * @param queue 
+ * @param process 
+ * @return int 
+ */
+int insert(struct priority_queue_t *queue, struct process_t *process);
+
+/**
+ * @brief 
+ * 
+ * @param queue 
+ * @param process 
+ * @return int 
+ */
+int remove(struct priority_queue_t *queue, struct process_t *process);
\ No newline at end of file
diff --git a/include/process.h b/include/process.h
new file mode 100644
index 0000000..be2bdbf
--- /dev/null
+++ b/include/process.h
@@ -0,0 +1,12 @@
+#pragma once
+
+#include <stddef.h>
+
+struct process_state_t;
+
+struct process_t
+{
+    size_t priority;
+
+    struct process_state_t *state;
+};
\ No newline at end of file
diff --git a/include/types/physaddr.h b/include/types/physaddr.h
new file mode 100644
index 0000000..9cf0725
--- /dev/null
+++ b/include/types/physaddr.h
@@ -0,0 +1,9 @@
+#pragma once
+
+#if defined __i386__ || __arm__
+typedef uint32_t physaddr_t;
+#elif defined __x86_64__ || __aarch64__
+typedef uint64_t physaddr_t;
+#else
+typedef uint64_t physaddr_t;
+#endif
\ No newline at end of file
diff --git a/include/types/status.h b/include/types/status.h
new file mode 100644
index 0000000..3366c8d
--- /dev/null
+++ b/include/types/status.h
@@ -0,0 +1,8 @@
+#pragma once
+
+enum status_t
+{
+    S_OK = 0,
+    S_BAD_SYSCALL,
+    S_OUT_OF_MEMORY
+};
\ No newline at end of file