* Fixed a buffer overflow when writting to the output buffer. This

would in some rare occasions cause memory to be corrupted. leading to
a crash.

* Added option for setting the http proxy and proccess's umask.

* Save the total uploaded for downloads between sessions.

* Moved from sigc++ to my own lightweight slot class for the task
scheduler. This saves some 5-600kb when compiled with debugging
symbols, 1-200kb without.


git-svn-id: svn://rakshasa.no/libtorrent/trunk/rtorrent@605 e378c898-3ddf-0310-93e7-cc216c733640

rak/functional_fun.h

@@ -0,0 +1,149 @@
+// rak - Rakshasa's toolbox
+// Copyright (C) 2005, Jari Sundell
+//
+// 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+// In addition, as a special exception, the copyright holders give
+// permission to link the code of portions of this program with the
+// OpenSSL library under certain conditions as described in each
+// individual source file, and distribute linked combinations
+// including the two.
+//
+// You must obey the GNU General Public License in all respects for
+// all of the code used other than OpenSSL.  If you modify file(s)
+// with this exception, you may extend this exception to your version
+// of the file(s), but you are not obligated to do so.  If you do not
+// wish to do so, delete this exception statement from your version.
+// If you delete this exception statement from all source files in the
+// program, then also delete it here.
+//
+// Contact:  Jari Sundell <jaris@ifi.uio.no>
+//
+//           Skomakerveien 33
+//           3185 Skoppum, NORWAY
+
+// This file contains functors that wrap function points and member
+// function pointers.
+//
+// 'fn' functors are polymorphic and derives from 'rak::function' and
+// thus is less strict about types, this adds the cost of calling a
+// virtual function.
+//
+// 'fun' functors are non-polymorphic and thus cheaper, but requires
+// the target object's type in the functor's template arguments.
+//
+// This should be replaced with TR1 stuff when it becomes widely
+// available. At the moment it behaves like std::auto_ptr, so be
+// careful when copying.
+
+#ifndef RAK_FUNCTIONAL_FUN_H
+#define RAK_FUNCTIONAL_FUN_H
+
+namespace rak {
+
+template <typename _Result>
+class function_base {
+public:
+  virtual ~function_base() {}
+
+  virtual _Result operator () () = 0;
+};
+
+template <typename _Base>
+struct function_ref {
+  explicit function_ref(_Base* b) : m_base(b) {}
+
+  _Base* m_base;
+};
+
+template <typename _Result>
+class function {
+public:
+  typedef _Result result_type;
+  typedef function_base<_Result> _Base;
+
+  function() : m_base(0) {}
+  function(function_ref<_Base> f) : m_base(f.m_base) {}
+  explicit function(function_base<_Result>* base) { m_base = base; }
+  
+  ~function()                                     { delete m_base; }
+
+  function& operator = (function& f) { m_base = f.release(); return *this; }
+
+  function& operator = (function_ref<_Base> f) {
+    if (m_base != f.m_base) {
+      delete m_base;
+      m_base = f.m_base;
+    }
+
+    return *this;
+  }
+
+  template <typename _T>
+  operator function_ref<_T> () { return function_ref<_T>(this->release()); }
+
+  _Result operator () () { return (*m_base)(); }
+
+private:
+  _Base* release() { _Base* tmp = m_base; m_base = 0; return tmp; }
+
+  _Base* m_base;
+};
+
+template <typename _Object, typename _Result>
+class _mem_fn0 : public function_base<_Result> {
+public:
+  typedef _Result (_Object::*_Func)();
+
+  _mem_fn0(_Object* object, _Func func) : m_object(object), m_func(func) {}
+  virtual ~_mem_fn0() {}
+  
+  virtual _Result operator () () { return (m_object->*m_func)(); }
+
+private:
+  _Object* m_object;
+  _Func    m_func;
+};
+
+template <typename _Object, typename _Result>
+class _const_mem_fn0 : public function_base<_Result> {
+public:
+  typedef _Result (_Object::*_Func)() const;
+
+  _const_mem_fn0(const _Object* object, _Func func) : m_object(object), m_func(func) {}
+  virtual ~_const_mem_fn0() {}
+  
+  virtual _Result operator () () { return (m_object->*m_func)(); }
+
+private:
+  const _Object* m_object;
+  _Func          m_func;
+};
+
+template <typename _Object, typename _Result>
+function<_Result>
+mem_fn(_Object* object, _Result (_Object::*func)()) {
+  return function<_Result>(static_cast<function_base<_Result>*>(new _mem_fn0<_Object, _Result>(object, func)));
+}
+
+template <typename _Object, typename _Result>
+function<_Result>
+mem_fn(const _Object* object, _Result (_Object::*func)() const) {
+  return function<_Result>(static_cast<function_base<_Result>*>(new _const_mem_fn0<_Object, _Result>(object, func)));
+}
+
+}
+
+#endif