Rename common to gdbsupport

[thirdparty/binutils-gdb.git] / gdb / common / observable.h

diff --git a/gdb/common/observable.h b/gdb/common/observable.h
deleted file mode 100644 (file)
index 205c303..0000000
--- a/gdb/common/observable.h
+++ /dev/null
@@ -1,119 +0,0 @@
-/* Observers
-
-   Copyright (C) 2016-2019 Free Software Foundation, Inc.
-
-   This file is part of GDB.
-
-   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 3 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, see <http://www.gnu.org/licenses/>.  */
-
-#ifndef COMMON_OBSERVABLE_H
-#define COMMON_OBSERVABLE_H
-
-#include <algorithm>
-#include <functional>
-#include <vector>
-
-namespace gdb
-{
-
-namespace observers
-{
-
-extern unsigned int observer_debug;
-
-/* An observer is an entity which is interested in being notified
-   when GDB reaches certain states, or certain events occur in GDB.
-   The entity being observed is called the observable.  To receive
-   notifications, the observer attaches a callback to the observable.
-   One observable can have several observers.
-
-   The observer implementation is also currently not reentrant.  In
-   particular, it is therefore not possible to call the attach or
-   detach routines during a notification.  */
-
-/* The type of a key that can be passed to attach, which can be passed
-   to detach to remove associated observers.  Tokens have address
-   identity, and are thus usually const globals.  */
-struct token
-{
-  token () = default;
-
-  DISABLE_COPY_AND_ASSIGN (token);
-};
-
-template<typename... T>
-class observable
-{
-public:
-
-  typedef std::function<void (T...)> func_type;
-
-  explicit observable (const char *name)
-    : m_name (name)
-  {
-  }
-
-  DISABLE_COPY_AND_ASSIGN (observable);
-
-  /* Attach F as an observer to this observable.  F cannot be
-     detached.  */
-  void attach (const func_type &f)
-  {
-    m_observers.emplace_back (nullptr, f);
-  }
-
-  /* Attach F as an observer to this observable.  T is a reference to
-     a token that can be used to later remove F.  */
-  void attach (const func_type &f, const token &t)
-  {
-    m_observers.emplace_back (&t, f);
-  }
-
-  /* Remove observers associated with T from this observable.  T is
-     the token that was previously passed to any number of "attach"
-     calls.  */
-  void detach (const token &t)
-  {
-    auto iter = std::remove_if (m_observers.begin (),
-                               m_observers.end (),
-                               [&] (const std::pair<const token *,
-                                    func_type> &e)
-                               {
-                                 return e.first == &t;
-                               });
-
-    m_observers.erase (iter, m_observers.end ());
-  }
-
-  /* Notify all observers that are attached to this observable.  */
-  void notify (T... args) const
-  {
-    if (observer_debug)
-      fprintf_unfiltered (gdb_stdlog, "observable %s notify() called\n",
-                         m_name);
-    for (auto &&e : m_observers)
-      e.second (args...);
-  }
-
-private:
-
-  std::vector<std::pair<const token *, func_type>> m_observers;
-  const char *m_name;
-};
-
-} /* namespace observers */
-
-} /* namespace gdb */
-
-#endif /* COMMON_OBSERVABLE_H */