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diff --git a/src/3rdparty/libdbus/dbus/dbus-resources.c b/src/3rdparty/libdbus/dbus/dbus-resources.c
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+/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
+/* dbus-resources.c Resource tracking/limits
+ *
+ * Copyright (C) 2003  Red Hat Inc.
+ *
+ * SPDX-License-Identifier: AFL-2.1 OR GPL-2.0-or-later
+ *
+ * Licensed under the Academic Free License version 2.1
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include <config.h>
+#include <dbus/dbus-resources.h>
+#include <dbus/dbus-internals.h>
+
+/**
+ * @defgroup DBusResources Resource limits related code
+ * @ingroup  DBusInternals
+ * @brief DBusCounter and other stuff related to resource limits
+ *
+ * Types and functions related to tracking resource limits,
+ * such as the maximum amount of memory/unix fds a connection can use
+ * for messages, etc.
+ */
+
+/**
+ * @defgroup DBusResourcesInternals Resource limits implementation details
+ * @ingroup  DBusInternals
+ * @brief Resource limits implementation details
+ *
+ * Implementation details of resource limits code.
+ *
+ * @{
+ */
+
+/**
+ * @brief Internals of DBusCounter.
+ * 
+ * DBusCounter internals. DBusCounter is an opaque object, it must be
+ * used via accessor functions.
+ */
+struct DBusCounter
+{
+  int refcount;  /**< reference count */
+
+  long size_value;       /**< current size counter value */
+  long unix_fd_value;    /**< current unix fd counter value */
+
+#ifdef DBUS_ENABLE_STATS
+  long peak_size_value;     /**< largest ever size counter value */
+  long peak_unix_fd_value;  /**< largest ever unix fd counter value */
+#endif
+
+  long notify_size_guard_value;    /**< call notify function when crossing this size value */
+  long notify_unix_fd_guard_value; /**< call notify function when crossing this unix fd value */
+
+  DBusCounterNotifyFunction notify_function; /**< notify function */
+  void *notify_data; /**< data for notify function */
+  dbus_bool_t notify_pending : 1; /**< TRUE if the guard value has been crossed */
+  DBusRMutex *mutex;    /**< Lock on the entire DBusCounter */
+};
+
+/** @} */  /* end of resource limits internals docs */
+
+/**
+ * @addtogroup DBusResources
+ * @{
+ */
+
+/**
+ * Creates a new DBusCounter. DBusCounter is used
+ * to count usage of some resource such as memory.
+ *
+ * @returns new counter or #NULL on failure
+ */
+DBusCounter*
+_dbus_counter_new (void)
+{
+  DBusCounter *counter;
+
+  counter = dbus_new0 (DBusCounter, 1);
+  if (counter == NULL)
+    return NULL;
+
+  counter->refcount = 1;
+
+  _dbus_rmutex_new_at_location (&counter->mutex);
+  if (counter->mutex == NULL)
+  {
+    dbus_free (counter);
+    counter = NULL;
+  }
+
+  return counter;
+}
+
+/**
+ * Increments refcount of the counter
+ *
+ * @param counter the counter
+ * @returns the counter
+ */
+DBusCounter *
+_dbus_counter_ref (DBusCounter *counter)
+{
+  _dbus_rmutex_lock (counter->mutex);
+
+  _dbus_assert (counter->refcount > 0);
+  
+  counter->refcount += 1;
+
+  _dbus_rmutex_unlock (counter->mutex);
+
+  return counter;
+}
+
+/**
+ * Decrements refcount of the counter and possibly
+ * finalizes the counter.
+ *
+ * @param counter the counter
+ */
+void
+_dbus_counter_unref (DBusCounter *counter)
+{
+  dbus_bool_t last_ref = FALSE;
+
+  _dbus_rmutex_lock (counter->mutex);
+
+  _dbus_assert (counter->refcount > 0);
+
+  counter->refcount -= 1;
+  last_ref = (counter->refcount == 0);
+
+  _dbus_rmutex_unlock (counter->mutex);
+
+  if (last_ref)
+    {
+      _dbus_rmutex_free_at_location (&counter->mutex);
+      dbus_free (counter);
+    }
+}
+
+/**
+ * Adjusts the value of the size counter by the given
+ * delta which may be positive or negative.
+ *
+ * This function may be called with locks held. After calling it, when
+ * any relevant locks are no longer held you must call _dbus_counter_notify().
+ *
+ * @param counter the counter
+ * @param delta value to add to the size counter's current value
+ */
+void
+_dbus_counter_adjust_size (DBusCounter *counter,
+                           long         delta)
+{
+  long old = 0;
+
+  _dbus_rmutex_lock (counter->mutex);
+
+  old = counter->size_value;
+
+  counter->size_value += delta;
+
+#ifdef DBUS_ENABLE_STATS
+  if (counter->peak_size_value < counter->size_value)
+    counter->peak_size_value = counter->size_value;
+#endif
+
+#if 0
+  _dbus_verbose ("Adjusting counter %ld by %ld = %ld\n",
+                 old, delta, counter->size_value);
+#endif
+
+  if (counter->notify_function != NULL &&
+      ((old < counter->notify_size_guard_value &&
+        counter->size_value >= counter->notify_size_guard_value) ||
+       (old >= counter->notify_size_guard_value &&
+        counter->size_value < counter->notify_size_guard_value)))
+    counter->notify_pending = TRUE;
+
+  _dbus_rmutex_unlock (counter->mutex);
+}
+
+/**
+ * Calls the notify function from _dbus_counter_set_notify(),
+ * if that function has been specified and the counter has crossed the
+ * guard value (in either direction) since the last call to this function.
+ *
+ * This function must not be called with locks held, since it can call out
+ * to user code.
+ */
+void
+_dbus_counter_notify (DBusCounter *counter)
+{
+  DBusCounterNotifyFunction notify_function = NULL;
+  void *notify_data = NULL;
+
+  _dbus_rmutex_lock (counter->mutex);
+  if (counter->notify_pending)
+    {
+      counter->notify_pending = FALSE;
+      notify_function = counter->notify_function;
+      notify_data = counter->notify_data;
+    }
+  _dbus_rmutex_unlock (counter->mutex);
+
+  if (notify_function != NULL)
+    (* notify_function) (counter, notify_data);
+}
+
+/**
+ * Adjusts the value of the unix fd counter by the given
+ * delta which may be positive or negative.
+ *
+ * This function may be called with locks held. After calling it, when
+ * any relevant locks are no longer held you must call _dbus_counter_notify().
+ *
+ * @param counter the counter
+ * @param delta value to add to the unix fds counter's current value
+ */
+void
+_dbus_counter_adjust_unix_fd (DBusCounter *counter,
+                              long         delta)
+{
+  long old = 0;
+
+  _dbus_rmutex_lock (counter->mutex);
+
+  old = counter->unix_fd_value;
+  
+  counter->unix_fd_value += delta;
+
+#ifdef DBUS_ENABLE_STATS
+  if (counter->peak_unix_fd_value < counter->unix_fd_value)
+    counter->peak_unix_fd_value = counter->unix_fd_value;
+#endif
+
+#if 0
+  _dbus_verbose ("Adjusting counter %ld by %ld = %ld\n",
+                 old, delta, counter->unix_fd_value);
+#endif
+  
+  if (counter->notify_function != NULL &&
+      ((old < counter->notify_unix_fd_guard_value &&
+        counter->unix_fd_value >= counter->notify_unix_fd_guard_value) ||
+       (old >= counter->notify_unix_fd_guard_value &&
+        counter->unix_fd_value < counter->notify_unix_fd_guard_value)))
+    counter->notify_pending = TRUE;
+
+  _dbus_rmutex_unlock (counter->mutex);
+}
+
+/**
+ * Gets the current value of the size counter.
+ *
+ * @param counter the counter
+ * @returns its current size value
+ */
+long
+_dbus_counter_get_size_value (DBusCounter *counter)
+{
+  long result;
+  _dbus_rmutex_lock (counter->mutex);
+  result = counter->size_value;
+  _dbus_rmutex_unlock (counter->mutex);
+  return result;
+}
+
+/**
+ * Gets the current value of the unix fd counter.
+ *
+ * @param counter the counter
+ * @returns its current unix fd value
+ */
+long
+_dbus_counter_get_unix_fd_value (DBusCounter *counter)
+{
+  long result;
+  _dbus_rmutex_lock (counter->mutex);
+  result = counter->unix_fd_value;
+  _dbus_rmutex_unlock (counter->mutex);
+  return result;
+}
+
+/**
+ * Sets the notify function for this counter; the notify function is
+ * called whenever the counter's values cross the guard values in
+ * either direction (moving up, or moving down).
+ *
+ * @param counter the counter
+ * @param size_guard_value the value we're notified if the size counter crosses
+ * @param unix_fd_guard_value the value we're notified if the unix fd counter crosses
+ * @param function function to call in order to notify
+ * @param user_data data to pass to the function
+ */
+void
+_dbus_counter_set_notify (DBusCounter               *counter,
+                          long                       size_guard_value,
+                          long                       unix_fd_guard_value,
+                          DBusCounterNotifyFunction  function,
+                          void                      *user_data)
+{
+  _dbus_rmutex_lock (counter->mutex);
+  counter->notify_size_guard_value = size_guard_value;
+  counter->notify_unix_fd_guard_value = unix_fd_guard_value;
+  counter->notify_function = function;
+  counter->notify_data = user_data;
+  counter->notify_pending = FALSE;
+  _dbus_rmutex_unlock (counter->mutex);
+}
+
+#ifdef DBUS_ENABLE_STATS
+long
+_dbus_counter_get_peak_size_value (DBusCounter *counter)
+{
+  return counter->peak_size_value;
+}
+
+long
+_dbus_counter_get_peak_unix_fd_value (DBusCounter *counter)
+{
+  return counter->peak_unix_fd_value;
+}
+#endif
+
+/** @} */  /* end of resource limits exported API */