4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
5 // Competence Center NETwork research (NET), St. Augustin, GERMANY
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 non-inline non-template implementation */
26 //#include "PacketImpl.ih"
32 //#include "PacketImpl.mpp"
34 ///////////////////////////////cc.p////////////////////////////////////////
36 ///////////////////////////////////////////////////////////////////////////
37 // senf::detail::PacketImpl
39 // This function has a problem being inlined. Somehow, often when calling this, the size of the
40 // resulting inlined code would be huge. Need to further debug this.
42 prefix_ void senf::detail::PacketImpl::release(refcount_t n)
44 SENF_ASSERT(refcount_ >= n);
45 // uah ... we need to be extremely careful here. If refcount_ is n, we want to commit suicide,
46 // however the destructor will remove all PacketInterpreters from the list and will thereby
47 // decrement refcount -> only decrenebt refcount_ when *not* caling delete
56 prefix_ void senf::detail::PacketImpl::appendInterpreter(PacketInterpreterBase * p)
58 interpreters_.push_back(*p);
62 prefix_ void senf::detail::PacketImpl::prependInterpreter(PacketInterpreterBase * p)
64 interpreters_.push_front(*p);
70 prefix_ void senf::detail::PacketImpl::clear(PacketData * self)
72 PacketInterpreterBase * n (next(static_cast<PacketInterpreterBase*>(self)));
74 truncateInterpreters(n);
75 iterator first (boost::next(begin(),self->begin_));
76 data_.erase(first, boost::next(begin(),self->end_));
77 updateIterators(self,self->begin_,-self->size());
82 prefix_ void senf::detail::PacketImpl::eraseInterpreters(interpreter_list::iterator b,
83 interpreter_list::iterator e)
86 interpreter_list::iterator i (b++);
87 PacketInterpreterBase * p (&(*i));
88 interpreters_.erase(i);
89 p->releaseImpl(); // might call PacketImpl::release and might delete p
93 prefix_ void senf::detail::PacketImpl::updateIterators(PacketData * self, difference_type pos,
96 // I hate to change the PacketData representation from here, I would have preferred to let
97 // PacketData have authority over this but trying that just get's to convoluted so I choose the
98 // simple solution and made PacketImpl a friend of PacketData.
100 interpreter_list::iterator i (interpreters_.begin());
102 // There are three types of packets
103 // a) Those which come before 'self' in the interpreter chain
105 // c) Those that come afterwards
106 // For a), the change must be inside the packet since 'self' must be within those packets
107 // For b), the change must also be within since that's the packet we are changeing
108 // For c), the change must be outside the packet (we don't allow an upper packet to mess with
109 // the the data owned by a packet further down the chain). It can be before or after the
113 for (; &(*i) != static_cast<PacketInterpreterBase*>(self); ++i) i->end_ += n;
119 interpreter_list::iterator const i_end (interpreters_.end());
121 if (pos <= difference_type(i->begin_))
122 // pos is before the packet, it must then be before all futher packets ...
123 for (; i != i_end; ++i) {
127 // else pos is after the packet and we don't need to change anything ...
130 ///////////////////////////////cc.e////////////////////////////////////////
132 //#include "PacketImpl.mpp"
138 // c-file-style: "senf"
139 // indent-tabs-mode: nil
140 // ispell-local-dictionary: "american"
141 // compile-command: "scons -u test"
142 // comment-column: 40