char-device.cpp

Go to the documentation of this file.

/*
 * This file is part of the µOS++ project (https://micro-os-plus.github.io/).
 * Copyright (c) 2015-2025 Liviu Ionescu. All rights reserved.
 *
 * Permission to use, copy, modify, and/or distribute this software
 * for any purpose is hereby granted, under the terms of the MIT license.
 *
 * If a copy of the license was not distributed with this file, it can
 * be obtained from https://opensource.org/licenses/mit.
 */
 
#if defined(OS_USE_OS_APP_CONFIG_H)
#include <cmsis-plus/os-app-config.h>
#endif
 
#include <cmsis-plus/posix-io/char-device.h>
#include <cmsis-plus/posix-io/device-registry.h>
 
#include <cstring>
#include <cassert>
#include <cerrno>
 
// ----------------------------------------------------------------------------
 
#if defined(__clang__)
#pragma clang diagnostic ignored "-Wc++98-compat"
#endif
 
// ----------------------------------------------------------------------------
 
namespace os
{
  namespace posix
  {
    // ========================================================================
 
    char_device::char_device (char_device_impl& impl, const char* name)
        : device{ impl, type::char_device, name }
    {
#if defined(OS_TRACE_POSIX_IO_CHAR_DEVICE)
      trace::printf ("char_device::%s(\"%s\")=@%p\n", __func__, name_, this);
#endif
 
      device_registry<device>::link (this);
    }
 
    char_device::~char_device ()
    {
#if defined(OS_TRACE_POSIX_IO_CHAR_DEVICE)
      trace::printf ("char_device::%s() @%p %s\n", __func__, this, name_);
#endif
 
      registry_links_.unlink ();
 
      name_ = nullptr;
    }
 
    // ========================================================================
 
    char_device_impl::char_device_impl (void)
    {
#if defined(OS_TRACE_POSIX_IO_CHAR_DEVICE)
      trace::printf ("char_device_impl::%s()=@%p\n", __func__, this);
#endif
    }
 
    char_device_impl::~char_device_impl ()
    {
#if defined(OS_TRACE_POSIX_IO_CHAR_DEVICE)
      trace::printf ("char_device_impl::%s() @%p\n", __func__, this);
#endif
    }
 
#pragma GCC diagnostic push
#if defined(__clang__)
#pragma clang diagnostic ignored "-Wunused-parameter"
#elif defined(__GNUC__)
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
 
    off_t
    char_device_impl::do_lseek (off_t offset, int whence)
    {
      errno = ENOSYS; // Not implemented
      return -1;
    }
 
#pragma GCC diagnostic pop
 
    void
    char_device_impl::do_sync (void)
    {
      errno = ENOSYS; // Not implemented
    }
 
    // ========================================================================
  } /* namespace posix */
} /* namespace os */
 
// ----------------------------------------------------------------------------