Endpoint syscalls implemented

zion/object/endpoint.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <glacier/container/intrusive_list.h>
+#include <glacier/memory/ref_ptr.h>
+#include <glacier/status/error.h>
+
+#include "lib/message_queue.h"
+#include "lib/mutex.h"
+#include "object/kernel_object.h"
+
+class Endpoint;
+class ReplyPort;
+
+template <>
+struct KernelObjectTag<Endpoint> {
+  static const uint64_t type = KernelObject::ENDPOINT;
+};
+
+class Endpoint : public KernelObject {
+ public:
+  uint64_t TypeTag() override { return KernelObject::ENDPOINT; }
+  static glcr::RefPtr<Endpoint> Create();
+
+  glcr::ErrorCode Write(uint64_t num_bytes, const void* data,
+                        z_cap_t reply_port_cap);
+
+  glcr::ErrorCode Read(uint64_t* num_bytes, void* data,
+                       z_cap_t* reply_port_cap);
+
+ private:
+  Mutex mutex_{"endpoint"};
+  UnboundedMessageQueue message_queue_;
+
+  glcr::IntrusiveList<Thread> blocked_threads_;
+
+  Endpoint() {}
+};