4 // Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
5 // Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
6 // Stefan Bund <g0dil@berlios.de>
8 // This program is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 2 of the License, or
11 // (at your option) any later version.
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the
20 // Free Software Foundation, Inc.,
21 // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 \brief PacketImpl inline non-template implementation */
27 #include "PacketInterpreter.hh"
29 #define prefix_ inline
30 ///////////////////////////////cci.p///////////////////////////////////////
34 // * The PacketImpl destructor will *explicitly* clean-up the interpreters_ list by removing
35 // each element from the list and deleting it if it's (intrusive) refcount is 0
36 // * The PacketInterpreters use safe hooks -> they know wether they are part of a list or not
37 // * PacketHandle has an intrusive_ptr to PacketInterpreterBase. The intrusive_ptr_add_ref
38 // will refcount both the PacketImpl as well as the PacketInterpreterBase
39 // * intrusive_ptr_remove will only delete the object if it's not in a container
40 // * removing an object from the list will decrement the PacketImpl refcount accordingly
41 // * inserting an object into the list will incroment the PacketImpl refcount accordingly
42 // * each PacketInterpreterBase instance holds a *raw* pointer to the PacketImpl
44 // The following operations change refcounts:
46 // * intrusive_ptr_add_ref(PacketInterpreterBase *);
47 // * intrusive_ptr_remove(PacketInterpreterBase *);
48 // * PacketImpl::appendInterpreter();
49 // * PacketImpl::prependInterpreter();
50 // * PacketImpl::truncateInterpreters();
52 // The last three also modify the impl_ member accordingly by calling
53 // PacketInterpreterBase::assign/release
55 ///////////////////////////////////////////////////////////////////////////
56 // senf::detail::PacketImpl
58 prefix_ senf::detail::PacketImpl::PacketImpl()
62 prefix_ senf::detail::PacketImpl::PacketImpl(size_type size, byte initValue)
63 : refcount_(0), data_(size,initValue)
66 prefix_ senf::detail::PacketImpl::~PacketImpl()
68 // We increment refcount_ to ensure, release() won't call delete again
70 eraseInterpreters(interpreters_.begin(), interpreters_.end());
73 // rerference/memory management
75 prefix_ void senf::detail::PacketImpl::add_ref(refcount_t n)
80 prefix_ void senf::detail::PacketImpl::release(refcount_t n)
82 BOOST_ASSERT(refcount_ >= n);
83 // uah ... we need to be extremely careful here. If refcount_ is n, we want to commit suicide,
84 // however the destructor will remove all PacketInterpreters from the list and will thereby
85 // decrement refcount -> only decrenebt refcount_ when *not* caling delete
92 prefix_ senf::detail::PacketImpl::refcount_t senf::detail::PacketImpl::refcount()
100 prefix_ senf::PacketInterpreterBase * senf::detail::PacketImpl::first()
102 return interpreters_.empty() ? 0 : & interpreters_.front();
105 prefix_ senf::PacketInterpreterBase * senf::detail::PacketImpl::last()
107 return interpreters_.empty() ? 0 : & interpreters_.back();
110 prefix_ senf::PacketInterpreterBase * senf::detail::PacketImpl::next(PacketInterpreterBase * p)
112 interpreter_list::iterator i (interpreter_list::current(*p));
113 return (++i == interpreters_.end()) ? 0 : &*i;
116 prefix_ senf::PacketInterpreterBase * senf::detail::PacketImpl::prev(PacketInterpreterBase * p)
118 interpreter_list::iterator i (interpreter_list::current(*p));
119 return (i == interpreters_.begin()) ? 0 : &*(--i);
122 prefix_ void senf::detail::PacketImpl::truncateInterpreters(PacketInterpreterBase * p)
125 eraseInterpreters(interpreter_list::current(*p),interpreters_.end());
128 prefix_ void senf::detail::PacketImpl::truncateInterpretersBackwards(PacketInterpreterBase * p)
131 eraseInterpreters(interpreters_.begin(),boost::next(interpreter_list::current(*p)));
136 prefix_ senf::detail::PacketImpl::iterator senf::detail::PacketImpl::begin()
138 return data_.begin();
141 prefix_ senf::detail::PacketImpl::iterator senf::detail::PacketImpl::end()
146 prefix_ senf::detail::PacketImpl::size_type senf::detail::PacketImpl::size()
151 prefix_ void senf::detail::PacketImpl::insert(PacketData * self, iterator pos, byte v)
153 difference_type ix (std::distance(begin(),pos));
155 updateIterators(self,ix,1);
158 prefix_ void senf::detail::PacketImpl::insert(PacketData * self, iterator pos, size_type n,
161 difference_type ix (std::distance(begin(),pos));
162 data_.insert(pos,n,v);
163 updateIterators(self,ix,n);
166 prefix_ void senf::detail::PacketImpl::erase(PacketData * self, iterator pos)
168 difference_type ix (std::distance(begin(),pos));
170 updateIterators(self,ix,-1);
173 prefix_ void senf::detail::PacketImpl::erase(PacketData * self, iterator first, iterator last)
175 difference_type ix (std::distance(begin(),first));
176 difference_type delta (std::distance(first,last));
177 data_.erase(first,last);
178 updateIterators(self,ix,-delta);
181 ///////////////////////////////////////////////////////////////////////////
182 // senf::detail::PacketImpl::Guard
184 prefix_ senf::detail::PacketImpl::Guard::Guard(PacketImpl * impl)
190 prefix_ senf::detail::PacketImpl::Guard::~Guard()
195 ///////////////////////////////cci.e///////////////////////////////////////
202 // c-file-style: "senf"
203 // indent-tabs-mode: nil
204 // ispell-local-dictionary: "american"
205 // compile-command: "scons -u test"
206 // comment-column: 40